| ; RUN: opt -aa-pipeline=basic-aa -passes=objc-arc -S < %s | FileCheck %s |
| |
| target datalayout = "e-p:64:64:64" |
| |
| declare ptr @llvm.objc.retain(ptr) |
| declare ptr @llvm.objc.retainAutoreleasedReturnValue(ptr) |
| declare ptr @llvm.objc.unsafeClaimAutoreleasedReturnValue(ptr) |
| declare void @llvm.objc.release(ptr) |
| declare ptr @llvm.objc.autorelease(ptr) |
| declare ptr @llvm.objc.autoreleaseReturnValue(ptr) |
| declare void @llvm.objc.autoreleasePoolPop(ptr) |
| declare ptr @llvm.objc.autoreleasePoolPush() |
| declare ptr @llvm.objc.retainBlock(ptr) |
| |
| declare ptr @llvm.objc.retainedObject(ptr) |
| declare ptr @llvm.objc.unretainedObject(ptr) |
| declare ptr @llvm.objc.unretainedPointer(ptr) |
| |
| declare void @use_pointer(ptr) |
| declare void @callee() |
| declare void @callee2(ptr, ptr) |
| declare void @callee_fnptr(ptr) |
| declare void @invokee() |
| declare ptr @returner() |
| declare void @bar(ptr) |
| |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| declare ptr @objc_msgSend(ptr, ptr, ...) |
| |
| ; Simple retain+release pair deletion, with some intervening control |
| ; flow and harmless instructions. |
| |
| ; CHECK: define void @test0_precise(ptr %x, i1 %p) [[NUW:#[0-9]+]] { |
| ; CHECK: @llvm.objc.retain |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test0_precise(ptr %x, i1 %p) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %p, label %t, label %f |
| |
| t: |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %return |
| |
| f: |
| store i32 7, ptr %x |
| br label %return |
| |
| return: |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; CHECK: define void @test0_imprecise(ptr %x, i1 %p) [[NUW]] { |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test0_imprecise(ptr %x, i1 %p) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %p, label %t, label %f |
| |
| t: |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %return |
| |
| f: |
| store i32 7, ptr %x |
| br label %return |
| |
| return: |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Like test0 but the release isn't always executed when the retain is, |
| ; so the optimization is not safe. |
| |
| ; TODO: Make the llvm.objc.release's argument be %0. |
| |
| ; CHECK: define void @test1_precise(ptr %x, i1 %p, i1 %q) [[NUW]] { |
| ; CHECK: @llvm.objc.retain(ptr %x) |
| ; CHECK: @llvm.objc.release(ptr %x) |
| ; CHECK: {{^}}} |
| define void @test1_precise(ptr %x, i1 %p, i1 %q) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %p, label %t, label %f |
| |
| t: |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %return |
| |
| f: |
| store i32 7, ptr %x |
| call void @callee() |
| br i1 %q, label %return, label %alt_return |
| |
| return: |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| |
| alt_return: |
| ret void |
| } |
| |
| ; CHECK: define void @test1_imprecise(ptr %x, i1 %p, i1 %q) [[NUW]] { |
| ; CHECK: @llvm.objc.retain(ptr %x) |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test1_imprecise(ptr %x, i1 %p, i1 %q) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %p, label %t, label %f |
| |
| t: |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %return |
| |
| f: |
| store i32 7, ptr %x |
| call void @callee() |
| br i1 %q, label %return, label %alt_return |
| |
| return: |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| ret void |
| |
| alt_return: |
| ret void |
| } |
| |
| |
| ; Don't do partial elimination into two different CFG diamonds. |
| |
| ; CHECK: define void @test1b_precise(ptr %x, i1 %p, i1 %q) { |
| ; CHECK: entry: |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %x) [[NUW]] |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: if.end5: |
| ; CHECK: tail call void @llvm.objc.release(ptr %x) [[NUW]] |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test1b_precise(ptr %x, i1 %p, i1 %q) { |
| entry: |
| tail call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %p, label %if.then, label %if.end |
| |
| if.then: ; preds = %entry |
| tail call void @callee() |
| br label %if.end |
| |
| if.end: ; preds = %if.then, %entry |
| br i1 %q, label %if.then3, label %if.end5 |
| |
| if.then3: ; preds = %if.end |
| tail call void @use_pointer(ptr %x) |
| br label %if.end5 |
| |
| if.end5: ; preds = %if.then3, %if.end |
| tail call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test1b_imprecise( |
| ; CHECK: entry: |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %x) [[NUW:#[0-9]+]] |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: if.end5: |
| ; CHECK: tail call void @llvm.objc.release(ptr %x) [[NUW]], !clang.imprecise_release ![[RELEASE:[0-9]+]] |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test1b_imprecise(ptr %x, i1 %p, i1 %q) { |
| entry: |
| tail call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %p, label %if.then, label %if.end |
| |
| if.then: ; preds = %entry |
| tail call void @callee() |
| br label %if.end |
| |
| if.end: ; preds = %if.then, %entry |
| br i1 %q, label %if.then3, label %if.end5 |
| |
| if.then3: ; preds = %if.end |
| tail call void @use_pointer(ptr %x) |
| br label %if.end5 |
| |
| if.end5: ; preds = %if.then3, %if.end |
| tail call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| |
| ; Like test0 but the pointer is passed to an intervening call, |
| ; so the optimization is not safe. |
| |
| ; CHECK-LABEL: define void @test2_precise( |
| ; CHECK: @llvm.objc.retain(ptr %x) |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test2_precise(ptr %x, i1 %p) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %p, label %t, label %f |
| |
| t: |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %return |
| |
| f: |
| store i32 7, ptr %x |
| call void @use_pointer(ptr %0) |
| store float 3.0, ptr %x |
| br label %return |
| |
| return: |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test2_imprecise( |
| ; CHECK: @llvm.objc.retain(ptr %x) |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test2_imprecise(ptr %x, i1 %p) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %p, label %t, label %f |
| |
| t: |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %return |
| |
| f: |
| store i32 7, ptr %x |
| call void @use_pointer(ptr %0) |
| store float 3.0, ptr %x |
| br label %return |
| |
| return: |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Like test0 but the release is in a loop, |
| ; so the optimization is not safe. |
| |
| ; TODO: For now, assume this can't happen. |
| |
| ; CHECK-LABEL: define void @test3_precise( |
| ; TODO: @llvm.objc.retain(ptr %a) |
| ; TODO: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test3_precise(ptr %x, ptr %q) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| br label %loop |
| |
| loop: |
| call void @llvm.objc.release(ptr %x) nounwind |
| %j = load volatile i1, ptr %q |
| br i1 %j, label %loop, label %return |
| |
| return: |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test3_imprecise( |
| ; TODO: @llvm.objc.retain(ptr %a) |
| ; TODO: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test3_imprecise(ptr %x, ptr %q) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| br label %loop |
| |
| loop: |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| %j = load volatile i1, ptr %q |
| br i1 %j, label %loop, label %return |
| |
| return: |
| ret void |
| } |
| |
| |
| ; TODO: For now, assume this can't happen. |
| |
| ; Like test0 but the retain is in a loop, |
| ; so the optimization is not safe. |
| |
| ; CHECK-LABEL: define void @test4_precise( |
| ; TODO: @llvm.objc.retain(ptr %a) |
| ; TODO: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test4_precise(ptr %x, ptr %q) nounwind { |
| entry: |
| br label %loop |
| |
| loop: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| %j = load volatile i1, ptr %q |
| br i1 %j, label %loop, label %return |
| |
| return: |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test4_imprecise( |
| ; TODO: @llvm.objc.retain(ptr %a) |
| ; TODO: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test4_imprecise(ptr %x, ptr %q) nounwind { |
| entry: |
| br label %loop |
| |
| loop: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| %j = load volatile i1, ptr %q |
| br i1 %j, label %loop, label %return |
| |
| return: |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| |
| ; Like test0 but the pointer is conditionally passed to an intervening call, |
| ; so the optimization is not safe. |
| |
| ; CHECK-LABEL: define void @test5a( |
| ; CHECK: @llvm.objc.retain(ptr |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test5a(ptr %x, i1 %q, ptr %y) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| %s = select i1 %q, ptr %y, ptr %0 |
| call void @use_pointer(ptr %s) |
| store i32 7, ptr %x |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test5b( |
| ; CHECK: @llvm.objc.retain(ptr |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test5b(ptr %x, i1 %q, ptr %y) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| %s = select i1 %q, ptr %y, ptr %0 |
| call void @use_pointer(ptr %s) |
| store i32 7, ptr %x |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| |
| ; retain+release pair deletion, where the release happens on two different |
| ; flow paths. |
| |
| ; CHECK-LABEL: define void @test6a( |
| ; CHECK: entry: |
| ; CHECK: tail call ptr @llvm.objc.retain |
| ; CHECK: t: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: f: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: return: |
| ; CHECK: {{^}}} |
| define void @test6a(ptr %x, i1 %p) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %p, label %t, label %f |
| |
| t: |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| call void @llvm.objc.release(ptr %x) nounwind |
| br label %return |
| |
| f: |
| store i32 7, ptr %x |
| call void @callee() |
| call void @llvm.objc.release(ptr %x) nounwind |
| br label %return |
| |
| return: |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test6b( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test6b(ptr %x, i1 %p) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %p, label %t, label %f |
| |
| t: |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| br label %return |
| |
| f: |
| store i32 7, ptr %x |
| call void @callee() |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| br label %return |
| |
| return: |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test6c( |
| ; CHECK: entry: |
| ; CHECK: tail call ptr @llvm.objc.retain |
| ; CHECK: t: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: f: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: return: |
| ; CHECK: {{^}}} |
| define void @test6c(ptr %x, i1 %p) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %p, label %t, label %f |
| |
| t: |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| call void @llvm.objc.release(ptr %x) nounwind |
| br label %return |
| |
| f: |
| store i32 7, ptr %x |
| call void @callee() |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| br label %return |
| |
| return: |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test6d( |
| ; CHECK: entry: |
| ; CHECK: tail call ptr @llvm.objc.retain |
| ; CHECK: t: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: f: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: return: |
| ; CHECK: {{^}}} |
| define void @test6d(ptr %x, i1 %p) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %p, label %t, label %f |
| |
| t: |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| br label %return |
| |
| f: |
| store i32 7, ptr %x |
| call void @callee() |
| call void @llvm.objc.release(ptr %x) nounwind |
| br label %return |
| |
| return: |
| ret void |
| } |
| |
| |
| ; retain+release pair deletion, where the retain happens on two different |
| ; flow paths. |
| |
| ; CHECK-LABEL: define void @test7( |
| ; CHECK: entry: |
| ; CHECK-NOT: llvm.objc. |
| ; CHECK: t: |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: f: |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: return: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test7(ptr %x, i1 %p) nounwind { |
| entry: |
| br i1 %p, label %t, label %f |
| |
| t: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %return |
| |
| f: |
| %1 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i32 7, ptr %x |
| call void @callee() |
| br label %return |
| |
| return: |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test7b( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test7b(ptr %x, i1 %p) nounwind { |
| entry: |
| br i1 %p, label %t, label %f |
| |
| t: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %return |
| |
| f: |
| %1 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i32 7, ptr %x |
| call void @callee() |
| br label %return |
| |
| return: |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Like test7, but there's a retain/retainBlock mismatch. Don't delete! |
| |
| ; CHECK-LABEL: define void @test7c( |
| ; CHECK: t: |
| ; CHECK: call ptr @llvm.objc.retainBlock |
| ; CHECK: f: |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: return: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test7c(ptr %x, i1 %p) nounwind { |
| entry: |
| br i1 %p, label %t, label %f |
| |
| t: |
| %0 = call ptr @llvm.objc.retainBlock(ptr %x) nounwind |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %return |
| |
| f: |
| %1 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i32 7, ptr %x |
| call void @callee() |
| br label %return |
| |
| return: |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; retain+release pair deletion, where the retain and release both happen on |
| ; different flow paths. Wild! |
| |
| ; CHECK-LABEL: define void @test8a( |
| ; CHECK: entry: |
| ; CHECK: t: |
| ; CHECK: @llvm.objc.retain |
| ; CHECK: f: |
| ; CHECK: @llvm.objc.retain |
| ; CHECK: mid: |
| ; CHECK: u: |
| ; CHECK: @llvm.objc.release |
| ; CHECK: g: |
| ; CHECK: @llvm.objc.release |
| ; CHECK: return: |
| ; CHECK: {{^}}} |
| define void @test8a(ptr %x, i1 %p, i1 %q) nounwind { |
| entry: |
| br i1 %p, label %t, label %f |
| |
| t: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %mid |
| |
| f: |
| %1 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i32 7, ptr %x |
| br label %mid |
| |
| mid: |
| br i1 %q, label %u, label %g |
| |
| u: |
| call void @callee() |
| call void @llvm.objc.release(ptr %x) nounwind |
| br label %return |
| |
| g: |
| call void @llvm.objc.release(ptr %x) nounwind |
| br label %return |
| |
| return: |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test8b( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test8b(ptr %x, i1 %p, i1 %q) nounwind { |
| entry: |
| br i1 %p, label %t, label %f |
| |
| t: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %mid |
| |
| f: |
| %1 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i32 7, ptr %x |
| br label %mid |
| |
| mid: |
| br i1 %q, label %u, label %g |
| |
| u: |
| call void @callee() |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| br label %return |
| |
| g: |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| br label %return |
| |
| return: |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test8c( |
| ; CHECK: entry: |
| ; CHECK: t: |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: f: |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: mid: |
| ; CHECK: u: |
| ; CHECK: @llvm.objc.retain |
| ; CHECK: @llvm.objc.release |
| ; CHECK: g: |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: return: |
| ; CHECK: {{^}}} |
| define void @test8c(ptr %x, i1 %p, i1 %q) nounwind { |
| entry: |
| br i1 %p, label %t, label %f |
| |
| t: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %mid |
| |
| f: |
| %1 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i32 7, ptr %x |
| br label %mid |
| |
| mid: |
| br i1 %q, label %u, label %g |
| |
| u: |
| call void @callee() |
| call void @llvm.objc.release(ptr %x) nounwind |
| br label %return |
| |
| g: |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| br label %return |
| |
| return: |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test8d( |
| ; CHECK: entry: |
| ; CHECK: t: |
| ; CHECK: @llvm.objc.retain |
| ; CHECK: f: |
| ; CHECK: @llvm.objc.retain |
| ; CHECK: mid: |
| ; CHECK: u: |
| ; CHECK: @llvm.objc.release |
| ; CHECK: g: |
| ; CHECK: @llvm.objc.release |
| ; CHECK: return: |
| ; CHECK: {{^}}} |
| define void @test8d(ptr %x, i1 %p, i1 %q) nounwind { |
| entry: |
| br i1 %p, label %t, label %f |
| |
| t: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i8 3, ptr %x |
| store float 2.0, ptr %x |
| br label %mid |
| |
| f: |
| %1 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| store i32 7, ptr %x |
| br label %mid |
| |
| mid: |
| br i1 %q, label %u, label %g |
| |
| u: |
| call void @callee() |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| br label %return |
| |
| g: |
| call void @llvm.objc.release(ptr %x) nounwind |
| br label %return |
| |
| return: |
| ret void |
| } |
| |
| ; Trivial retain+release pair deletion. |
| |
| ; CHECK-LABEL: define void @test9( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test9(ptr %x) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @llvm.objc.release(ptr %0) nounwind |
| ret void |
| } |
| |
| ; Retain+release pair, but on an unknown pointer relationship. Don't delete! |
| |
| ; CHECK-LABEL: define void @test9b( |
| ; CHECK: @llvm.objc.retain(ptr %x) |
| ; CHECK: @llvm.objc.release(ptr %s) |
| ; CHECK: {{^}}} |
| define void @test9b(ptr %x, i1 %j, ptr %p) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| %s = select i1 %j, ptr %x, ptr %p |
| call void @llvm.objc.release(ptr %s) nounwind |
| ret void |
| } |
| |
| ; Trivial retain+release pair with intervening calls - don't delete! |
| |
| ; CHECK-LABEL: define void @test10( |
| ; CHECK: @llvm.objc.retain(ptr %x) |
| ; CHECK: @callee |
| ; CHECK: @use_pointer |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test10(ptr %x) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @callee() |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %0) nounwind |
| ret void |
| } |
| |
| ; Trivial retain+autoreleaserelease pair. Don't delete! |
| ; Also, add a tail keyword, since llvm.objc.retain can never be passed |
| ; a stack argument. |
| |
| ; CHECK-LABEL: define void @test11( |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %x) [[NUW]] |
| ; CHECK: call ptr @llvm.objc.autorelease(ptr %0) [[NUW]] |
| ; CHECK: {{^}}} |
| define void @test11(ptr %x) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| call ptr @llvm.objc.autorelease(ptr %0) nounwind |
| call void @use_pointer(ptr %x) |
| ret void |
| } |
| |
| ; Same as test11 but with no use_pointer call. Delete the pair! |
| |
| ; CHECK-LABEL: define void @test11a( |
| ; CHECK: entry: |
| ; CHECK-NEXT: ret void |
| ; CHECK: {{^}}} |
| define void @test11a(ptr %x) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| call ptr @llvm.objc.autorelease(ptr %0) nounwind |
| ret void |
| } |
| |
| ; Same as test11 but the value is returned. Do not perform an RV optimization |
| ; since if the frontend emitted code for an __autoreleasing variable, we may |
| ; want it to be in the autorelease pool. |
| |
| ; CHECK-LABEL: define ptr @test11b( |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %x) [[NUW]] |
| ; CHECK: call ptr @llvm.objc.autorelease(ptr %0) [[NUW]] |
| ; CHECK: {{^}}} |
| define ptr @test11b(ptr %x) nounwind { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| call ptr @llvm.objc.autorelease(ptr %0) nounwind |
| ret ptr %x |
| } |
| |
| ; We can not delete this retain, release since we do not have a post-dominating |
| ; use of the release. |
| |
| ; CHECK-LABEL: define void @test12( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: @llvm.objc.retain(ptr %x) |
| ; CHECK-NEXT: @llvm.objc.retain |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test12(ptr %x, i64 %n) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; Trivial retain,autorelease pair. Don't delete! |
| |
| ; CHECK-LABEL: define void @test13( |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %x) [[NUW]] |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %x) [[NUW]] |
| ; CHECK: @use_pointer(ptr %x) |
| ; CHECK: call ptr @llvm.objc.autorelease(ptr %x) [[NUW]] |
| ; CHECK: {{^}}} |
| define void @test13(ptr %x, i64 %n) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call ptr @llvm.objc.autorelease(ptr %x) nounwind |
| ret void |
| } |
| |
| ; Delete the retain+release pair. |
| |
| ; CHECK-LABEL: define void @test13b( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: @llvm.objc.retain(ptr %x) |
| ; CHECK-NEXT: @use_pointer |
| ; CHECK-NEXT: @use_pointer |
| ; CHECK-NEXT: @use_pointer |
| ; CHECK-NEXT: @llvm.objc.release |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test13b(ptr %x, i64 %n) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; Don't delete the retain+release pair because there's an |
| ; autoreleasePoolPop in the way. |
| |
| ; CHECK-LABEL: define void @test13c( |
| ; CHECK: @llvm.objc.retain(ptr %x) |
| ; CHECK: @llvm.objc.autoreleasePoolPop |
| ; CHECK: @llvm.objc.retain(ptr %x) |
| ; CHECK: @use_pointer |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test13c(ptr %x, i64 %n) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @llvm.objc.autoreleasePoolPop(ptr undef) |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; Like test13c, but there's an autoreleasePoolPush in the way, but that |
| ; doesn't matter. |
| |
| ; CHECK-LABEL: define void @test13d( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: @llvm.objc.retain(ptr %x) |
| ; CHECK-NEXT: @llvm.objc.autoreleasePoolPush |
| ; CHECK-NEXT: @use_pointer |
| ; CHECK-NEXT: @use_pointer |
| ; CHECK-NEXT: @use_pointer |
| ; CHECK-NEXT: @llvm.objc.release |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test13d(ptr %x, i64 %n) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call ptr @llvm.objc.autoreleasePoolPush() |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; Trivial retain,release pair with intervening call, and it's post-dominated by |
| ; another release. But it is not known safe in the top down direction. We can |
| ; not eliminate it. |
| |
| ; CHECK-LABEL: define void @test14( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: @llvm.objc.retain |
| ; CHECK-NEXT: @use_pointer |
| ; CHECK-NEXT: @use_pointer |
| ; CHECK-NEXT: @llvm.objc.release |
| ; CHECK-NEXT: @llvm.objc.release |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test14(ptr %x, i64 %n) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; Trivial retain,autorelease pair with intervening call, but it's post-dominated |
| ; by another release. Don't delete anything. |
| |
| ; CHECK-LABEL: define void @test15( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: @llvm.objc.retain(ptr %x) |
| ; CHECK-NEXT: @use_pointer |
| ; CHECK-NEXT: @llvm.objc.autorelease(ptr %x) |
| ; CHECK-NEXT: @llvm.objc.release |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test15(ptr %x, i64 %n) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call ptr @llvm.objc.autorelease(ptr %x) nounwind |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; Trivial retain,autorelease pair, post-dominated |
| ; by another release. Delete the retain and release. |
| |
| ; CHECK-LABEL: define void @test15b( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: @llvm.objc.retain |
| ; CHECK-NEXT: @llvm.objc.autorelease |
| ; CHECK-NEXT: @llvm.objc.release |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test15b(ptr %x, i64 %n) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call ptr @llvm.objc.autorelease(ptr %x) nounwind |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test15c( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: @llvm.objc.autorelease |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test15c(ptr %x, i64 %n) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call ptr @llvm.objc.autorelease(ptr %x) nounwind |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Retain+release pairs in diamonds, all dominated by a retain. |
| |
| ; CHECK-LABEL: define void @test16a( |
| ; CHECK: @llvm.objc.retain(ptr %x) |
| ; CHECK-NOT: @objc |
| ; CHECK: purple: |
| ; CHECK: @use_pointer |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test16a(i1 %a, i1 %b, ptr %x) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %a, label %red, label %orange |
| |
| red: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| br label %yellow |
| |
| orange: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| br label %yellow |
| |
| yellow: |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| br i1 %b, label %green, label %blue |
| |
| green: |
| call void @llvm.objc.release(ptr %x) nounwind |
| br label %purple |
| |
| blue: |
| call void @llvm.objc.release(ptr %x) nounwind |
| br label %purple |
| |
| purple: |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test16b( |
| ; CHECK: @llvm.objc.retain(ptr %x) |
| ; CHECK-NOT: @objc |
| ; CHECK: purple: |
| ; CHECK-NEXT: @use_pointer |
| ; CHECK-NEXT: @use_pointer |
| ; CHECK-NEXT: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test16b(i1 %a, i1 %b, ptr %x) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %a, label %red, label %orange |
| |
| red: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| br label %yellow |
| |
| orange: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| br label %yellow |
| |
| yellow: |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| br i1 %b, label %green, label %blue |
| |
| green: |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| br label %purple |
| |
| blue: |
| call void @llvm.objc.release(ptr %x) nounwind |
| br label %purple |
| |
| purple: |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test16c( |
| ; CHECK: @llvm.objc.retain(ptr %x) |
| ; CHECK-NOT: @objc |
| ; CHECK: purple: |
| ; CHECK: @use_pointer |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test16c(i1 %a, i1 %b, ptr %x) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %a, label %red, label %orange |
| |
| red: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| br label %yellow |
| |
| orange: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| br label %yellow |
| |
| yellow: |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| br i1 %b, label %green, label %blue |
| |
| green: |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| br label %purple |
| |
| blue: |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| br label %purple |
| |
| purple: |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test16d( |
| ; CHECK: @llvm.objc.retain(ptr %x) |
| ; CHECK: @llvm.objc |
| ; CHECK: {{^}}} |
| define void @test16d(i1 %a, i1 %b, ptr %x) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| br i1 %a, label %red, label %orange |
| |
| red: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| br label %yellow |
| |
| orange: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| br label %yellow |
| |
| yellow: |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| br i1 %b, label %green, label %blue |
| |
| green: |
| call void @llvm.objc.release(ptr %x) nounwind |
| br label %purple |
| |
| blue: |
| call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| br label %purple |
| |
| purple: |
| ret void |
| } |
| |
| ; Delete no-ops. |
| |
| ; CHECK-LABEL: define void @test18( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test18() { |
| call ptr @llvm.objc.retain(ptr null) |
| call void @llvm.objc.release(ptr null) |
| call ptr @llvm.objc.autorelease(ptr null) |
| ret void |
| } |
| |
| ; Delete no-ops where undef can be assumed to be null. |
| |
| ; CHECK-LABEL: define void @test18b( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test18b() { |
| call ptr @llvm.objc.retain(ptr undef) |
| call void @llvm.objc.release(ptr undef) |
| call ptr @llvm.objc.autorelease(ptr undef) |
| ret void |
| } |
| |
| ; Replace uses of arguments with uses of return values, to reduce |
| ; register pressure. |
| |
| ; CHECK: define void @test19(ptr %y) { |
| ; CHECK: %0 = tail call ptr @llvm.objc.retain(ptr %y) |
| ; CHECK: call void @use_pointer(ptr %y) |
| ; CHECK: call void @use_pointer(ptr %y) |
| ; CHECK: call void @llvm.objc.release(ptr %y) |
| ; CHECK: ret void |
| ; CHECK: {{^}}} |
| define void @test19(ptr %y) { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %y) nounwind |
| call void @use_pointer(ptr %y) |
| call void @use_pointer(ptr %y) |
| call void @llvm.objc.release(ptr %y) |
| ret void |
| } |
| |
| ; Bitcast insertion |
| |
| ; CHECK-LABEL: define void @test20( |
| ; CHECK: %tmp1 = tail call ptr @llvm.objc.retain(ptr %self) [[NUW]] |
| ; CHECK-NEXT: invoke |
| ; CHECK: {{^}}} |
| define void @test20(ptr %self) personality ptr @__gxx_personality_v0 { |
| if.then12: |
| %tmp1 = call ptr @llvm.objc.retain(ptr %self) nounwind |
| invoke void @invokee() |
| to label %invoke.cont23 unwind label %lpad20 |
| |
| invoke.cont23: ; preds = %if.then12 |
| invoke void @invokee() |
| to label %if.end unwind label %lpad20 |
| |
| lpad20: ; preds = %invoke.cont23, %if.then12 |
| %tmp502 = phi ptr [ undef, %invoke.cont23 ], [ %self, %if.then12 ] |
| %exn = landingpad {ptr, i32} |
| cleanup |
| unreachable |
| |
| if.end: ; preds = %invoke.cont23 |
| ret void |
| } |
| |
| ; Delete a redundant retain,autorelease when forwaring a call result |
| ; directly to a return value. |
| |
| ; CHECK-LABEL: define ptr @test21( |
| ; CHECK: call ptr @returner() |
| ; CHECK-NEXT: ret ptr %call |
| ; CHECK-NEXT: } |
| define ptr @test21() { |
| entry: |
| %call = call ptr @returner() |
| %0 = call ptr @llvm.objc.retain(ptr %call) nounwind |
| %1 = call ptr @llvm.objc.autorelease(ptr %0) nounwind |
| ret ptr %1 |
| } |
| |
| ; Move an objc call up through a phi that has null operands. |
| |
| ; CHECK-LABEL: define void @test22( |
| ; CHECK: B: |
| ; CHECK: call void @llvm.objc.release(ptr %p) |
| ; CHECK: br label %C |
| ; CHECK: C: ; preds = %B, %A |
| ; CHECK-NOT: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test22(ptr %p, i1 %a) { |
| br i1 %a, label %A, label %B |
| A: |
| br label %C |
| B: |
| br label %C |
| C: |
| %h = phi ptr [ null, %A ], [ %p, %B ] |
| call void @llvm.objc.release(ptr %h), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Do not move an llvm.objc.release that doesn't have the clang.imprecise_release tag. |
| |
| ; CHECK-LABEL: define void @test22_precise( |
| ; CHECK: %[[P0:.*]] = phi ptr |
| ; CHECK: call void @llvm.objc.release(ptr %[[P0]]) |
| ; CHECK: ret void |
| define void @test22_precise(ptr %p, i1 %a) { |
| br i1 %a, label %A, label %B |
| A: |
| br label %C |
| B: |
| br label %C |
| C: |
| %h = phi ptr [ null, %A ], [ %p, %B ] |
| call void @llvm.objc.release(ptr %h) |
| ret void |
| } |
| |
| ; Any call can decrement a retain count. |
| |
| ; CHECK-LABEL: define void @test24( |
| ; CHECK: @llvm.objc.retain(ptr %a) |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test24(ptr %r, ptr %a) { |
| call ptr @llvm.objc.retain(ptr %a) |
| call void @use_pointer(ptr %r) |
| %q = load i8, ptr %a |
| call void @llvm.objc.release(ptr %a) |
| ret void |
| } |
| |
| ; Don't move a retain/release pair if the release can be moved |
| ; but the retain can't be moved to balance it. |
| |
| ; CHECK-LABEL: define void @test25( |
| ; CHECK: entry: |
| ; CHECK: call ptr @llvm.objc.retain(ptr %p) |
| ; CHECK: true: |
| ; CHECK: done: |
| ; CHECK: call void @llvm.objc.release(ptr %p) |
| ; CHECK: {{^}}} |
| define void @test25(ptr %p, i1 %x) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| call void @callee() |
| br i1 %x, label %true, label %done |
| |
| true: |
| store i8 0, ptr %p |
| br label %done |
| |
| done: |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Don't move a retain/release pair if the retain can be moved |
| ; but the release can't be moved to balance it. |
| |
| ; CHECK-LABEL: define void @test26( |
| ; CHECK: entry: |
| ; CHECK: call ptr @llvm.objc.retain(ptr %p) |
| ; CHECK: true: |
| ; CHECK: done: |
| ; CHECK: call void @llvm.objc.release(ptr %p) |
| ; CHECK: {{^}}} |
| define void @test26(ptr %p, i1 %x) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %true, label %done |
| |
| true: |
| call void @callee() |
| br label %done |
| |
| done: |
| store i8 0, ptr %p |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Don't sink the retain,release into the loop. |
| |
| ; CHECK-LABEL: define void @test27( |
| ; CHECK: entry: |
| ; CHECK: call ptr @llvm.objc.retain(ptr %p) |
| ; CHECK: loop: |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: done: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test27(ptr %p, i1 %x, i1 %y) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %loop, label %done |
| |
| loop: |
| call void @callee() |
| store i8 0, ptr %p |
| br i1 %y, label %done, label %loop |
| |
| done: |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Trivial code motion case: Triangle. |
| |
| ; CHECK-LABEL: define void @test28( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: true: |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: call void @callee() |
| ; CHECK: store |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: done: |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test28(ptr %p, i1 %x) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %true, label %done |
| |
| true: |
| call void @callee() |
| store i8 0, ptr %p |
| br label %done |
| |
| done: |
| call void @llvm.objc.release(ptr %p), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Trivial code motion case: Triangle, but no metadata. Don't move past |
| ; unrelated memory references! |
| |
| ; CHECK-LABEL: define void @test28b( |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: true: |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: call void @callee() |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: store |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: done: |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test28b(ptr %p, i1 %x, ptr noalias %t) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %true, label %done |
| |
| true: |
| call void @callee() |
| store i8 0, ptr %p |
| br label %done |
| |
| done: |
| store i8 0, ptr %t |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Trivial code motion case: Triangle, with metadata. Do move past |
| ; unrelated memory references! And preserve the metadata. |
| |
| ; CHECK-LABEL: define void @test28c( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: true: |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: call void @callee() |
| ; CHECK: store |
| ; CHECK: call void @llvm.objc.release(ptr %p) [[NUW]], !clang.imprecise_release |
| ; CHECK: done: |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test28c(ptr %p, i1 %x, ptr noalias %t) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %true, label %done |
| |
| true: |
| call void @callee() |
| store i8 0, ptr %p |
| br label %done |
| |
| done: |
| store i8 0, ptr %t |
| call void @llvm.objc.release(ptr %p), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Like test28. but with two releases. |
| |
| ; CHECK-LABEL: define void @test29( |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: true: |
| ; CHECK: call void @callee() |
| ; CHECK: store |
| ; CHECK: done: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: ohno: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test29(ptr %p, i1 %x, i1 %y) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %true, label %done |
| |
| true: |
| call void @callee() |
| store i8 0, ptr %p |
| br i1 %y, label %done, label %ohno |
| |
| done: |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| |
| ohno: |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Basic case with the use and call in a diamond |
| ; with an extra release. |
| |
| ; CHECK-LABEL: define void @test30( |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: true: |
| ; CHECK: call void @callee() |
| ; CHECK: store |
| ; CHECK: false: |
| ; CHECK: done: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: ohno: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test30(ptr %p, i1 %x, i1 %y, i1 %z) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %true, label %false |
| |
| true: |
| call void @callee() |
| store i8 0, ptr %p |
| br i1 %y, label %done, label %ohno |
| |
| false: |
| br i1 %z, label %done, label %ohno |
| |
| done: |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| |
| ohno: |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Basic case with a mergeable release. |
| |
| ; CHECK-LABEL: define void @test31( |
| ; CHECK: call ptr @llvm.objc.retain(ptr %p) |
| ; CHECK: call void @callee() |
| ; CHECK: store |
| ; CHECK: true: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: false: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: ret void |
| ; CHECK: {{^}}} |
| define void @test31(ptr %p, i1 %x) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| call void @callee() |
| store i8 0, ptr %p |
| br i1 %x, label %true, label %false |
| true: |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| false: |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Don't consider bitcasts or getelementptrs direct uses. |
| |
| ; CHECK-LABEL: define void @test32( |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: true: |
| ; CHECK: call void @callee() |
| ; CHECK: store |
| ; CHECK: done: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test32(ptr %p, i1 %x) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %true, label %done |
| |
| true: |
| call void @callee() |
| store i8 0, ptr %p |
| br label %done |
| |
| done: |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Do consider icmps to be direct uses. |
| |
| ; CHECK-LABEL: define void @test33( |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: true: |
| ; CHECK: call void @callee() |
| ; CHECK: icmp |
| ; CHECK: done: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test33(ptr %p, i1 %x, ptr %y) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %true, label %done |
| |
| true: |
| call void @callee() |
| %v = icmp eq ptr %p, %y |
| br label %done |
| |
| done: |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Delete retain,release if there's just a possible dec and we have imprecise |
| ; releases. |
| |
| ; CHECK-LABEL: define void @test34a( |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: true: |
| ; CHECK: done: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test34a(ptr %p, i1 %x, ptr %y) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %true, label %done |
| |
| true: |
| call void @callee() |
| br label %done |
| |
| done: |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test34b( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test34b(ptr %p, i1 %x, ptr %y) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %true, label %done |
| |
| true: |
| call void @callee() |
| br label %done |
| |
| done: |
| call void @llvm.objc.release(ptr %p), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| |
| ; Delete retain,release if there's just a use and we do not have a precise |
| ; release. |
| |
| ; Precise. |
| ; CHECK-LABEL: define void @test35a( |
| ; CHECK: entry: |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: true: |
| ; CHECK: done: |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test35a(ptr %p, i1 %x, ptr %y) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %true, label %done |
| |
| true: |
| %v = icmp eq ptr %p, %y |
| br label %done |
| |
| done: |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Imprecise. |
| ; CHECK-LABEL: define void @test35b( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test35b(ptr %p, i1 %x, ptr %y) { |
| entry: |
| %f0 = call ptr @llvm.objc.retain(ptr %p) |
| br i1 %x, label %true, label %done |
| |
| true: |
| %v = icmp eq ptr %p, %y |
| br label %done |
| |
| done: |
| call void @llvm.objc.release(ptr %p), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete a retain,release if there's no actual use and we have precise release. |
| |
| ; CHECK-LABEL: define void @test36a( |
| ; CHECK: @llvm.objc.retain |
| ; CHECK: call void @callee() |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: call void @callee() |
| ; CHECK: @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test36a(ptr %p) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %p) |
| call void @callee() |
| call void @callee() |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Like test36, but with metadata. |
| |
| ; CHECK-LABEL: define void @test36b( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test36b(ptr %p) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %p) |
| call void @callee() |
| call void @callee() |
| call void @llvm.objc.release(ptr %p), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Be aggressive about analyzing phis to eliminate possible uses. |
| |
| ; CHECK-LABEL: define void @test38( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test38(ptr %p, i1 %u, i1 %m, ptr %z, ptr %y, ptr %x, ptr %w) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %p) |
| br i1 %u, label %true, label %false |
| true: |
| br i1 %m, label %a, label %b |
| false: |
| br i1 %m, label %c, label %d |
| a: |
| br label %e |
| b: |
| br label %e |
| c: |
| br label %f |
| d: |
| br label %f |
| e: |
| %j = phi ptr [ %z, %a ], [ %y, %b ] |
| br label %g |
| f: |
| %k = phi ptr [ %w, %c ], [ %x, %d ] |
| br label %g |
| g: |
| %h = phi ptr [ %j, %e ], [ %k, %f ] |
| call void @use_pointer(ptr %h) |
| call void @llvm.objc.release(ptr %p), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete retain,release pairs around loops. |
| |
| ; CHECK-LABEL: define void @test39( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test39(ptr %p) { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %p) |
| br label %loop |
| |
| loop: ; preds = %loop, %entry |
| br i1 undef, label %loop, label %exit |
| |
| exit: ; preds = %loop |
| call void @llvm.objc.release(ptr %0), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete retain,release pairs around loops containing uses. |
| |
| ; CHECK-LABEL: define void @test39b( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test39b(ptr %p) { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %p) |
| br label %loop |
| |
| loop: ; preds = %loop, %entry |
| store i8 0, ptr %0 |
| br i1 undef, label %loop, label %exit |
| |
| exit: ; preds = %loop |
| call void @llvm.objc.release(ptr %0), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete retain,release pairs around loops containing potential decrements. |
| |
| ; CHECK-LABEL: define void @test39c( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test39c(ptr %p) { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %p) |
| br label %loop |
| |
| loop: ; preds = %loop, %entry |
| call void @use_pointer(ptr %0) |
| br i1 undef, label %loop, label %exit |
| |
| exit: ; preds = %loop |
| call void @llvm.objc.release(ptr %0), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Delete retain,release pairs around loops even if |
| ; the successors are in a different order. |
| |
| ; CHECK-LABEL: define void @test40( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test40(ptr %p) { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %p) |
| br label %loop |
| |
| loop: ; preds = %loop, %entry |
| call void @use_pointer(ptr %0) |
| br i1 undef, label %exit, label %loop |
| |
| exit: ; preds = %loop |
| call void @llvm.objc.release(ptr %0), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Do the known-incremented retain+release elimination even if the pointer |
| ; is also autoreleased. |
| |
| ; CHECK-LABEL: define void @test42( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: call ptr @llvm.objc.retain(ptr %p) |
| ; CHECK-NEXT: call ptr @llvm.objc.autorelease(ptr %p) |
| ; CHECK-NEXT: call void @use_pointer(ptr %p) |
| ; CHECK-NEXT: call void @use_pointer(ptr %p) |
| ; CHECK-NEXT: call void @use_pointer(ptr %p) |
| ; CHECK-NEXT: call void @use_pointer(ptr %p) |
| ; CHECK-NEXT: call void @llvm.objc.release(ptr %p) |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test42(ptr %p) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %p) |
| call ptr @llvm.objc.autorelease(ptr %p) |
| call ptr @llvm.objc.retain(ptr %p) |
| call void @use_pointer(ptr %p) |
| call void @use_pointer(ptr %p) |
| call void @llvm.objc.release(ptr %p) |
| call void @use_pointer(ptr %p) |
| call void @use_pointer(ptr %p) |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Don't the known-incremented retain+release elimination if the pointer is |
| ; autoreleased and there's an autoreleasePoolPop. |
| |
| ; CHECK-LABEL: define void @test43( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: call ptr @llvm.objc.retain(ptr %p) |
| ; CHECK-NEXT: call ptr @llvm.objc.autorelease(ptr %p) |
| ; CHECK-NEXT: call ptr @llvm.objc.retain |
| ; CHECK-NEXT: call void @use_pointer(ptr %p) |
| ; CHECK-NEXT: call void @use_pointer(ptr %p) |
| ; CHECK-NEXT: call void @llvm.objc.autoreleasePoolPop(ptr undef) |
| ; CHECK-NEXT: call void @llvm.objc.release |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test43(ptr %p) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %p) |
| call ptr @llvm.objc.autorelease(ptr %p) |
| call ptr @llvm.objc.retain(ptr %p) |
| call void @use_pointer(ptr %p) |
| call void @use_pointer(ptr %p) |
| call void @llvm.objc.autoreleasePoolPop(ptr undef) |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Do the known-incremented retain+release elimination if the pointer is |
| ; autoreleased and there's an autoreleasePoolPush. |
| |
| ; CHECK-LABEL: define void @test43b( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: call ptr @llvm.objc.retain(ptr %p) |
| ; CHECK-NEXT: call ptr @llvm.objc.autorelease(ptr %p) |
| ; CHECK-NEXT: call void @use_pointer(ptr %p) |
| ; CHECK-NEXT: call void @use_pointer(ptr %p) |
| ; CHECK-NEXT: call ptr @llvm.objc.autoreleasePoolPush() |
| ; CHECK-NEXT: call void @use_pointer(ptr %p) |
| ; CHECK-NEXT: call void @llvm.objc.release |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test43b(ptr %p) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %p) |
| call ptr @llvm.objc.autorelease(ptr %p) |
| call ptr @llvm.objc.retain(ptr %p) |
| call void @use_pointer(ptr %p) |
| call void @use_pointer(ptr %p) |
| call ptr @llvm.objc.autoreleasePoolPush() |
| call void @llvm.objc.release(ptr %p) |
| call void @use_pointer(ptr %p) |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Do retain+release elimination for non-provenance pointers. |
| |
| ; CHECK-LABEL: define void @test44( |
| ; CHECK-NOT: llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test44(ptr %pp) { |
| %p = load ptr, ptr %pp |
| %q = call ptr @llvm.objc.retain(ptr %p) |
| call void @llvm.objc.release(ptr %q) |
| ret void |
| } |
| |
| ; Don't delete retain+release with an unknown-provenance |
| ; may-alias llvm.objc.release between them. |
| |
| ; CHECK-LABEL: define void @test45( |
| ; CHECK: call ptr @llvm.objc.retain(ptr %p) |
| ; CHECK: call void @llvm.objc.release(ptr %q) |
| ; CHECK: call void @use_pointer(ptr %p) |
| ; CHECK: call void @llvm.objc.release(ptr %p) |
| ; CHECK: {{^}}} |
| define void @test45(ptr %pp, ptr %qq) { |
| %p = load ptr, ptr %pp |
| %q = load ptr, ptr %qq |
| call ptr @llvm.objc.retain(ptr %p) |
| call void @llvm.objc.release(ptr %q) |
| call void @use_pointer(ptr %p) |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Don't delete retain and autorelease here. |
| |
| ; CHECK-LABEL: define void @test46( |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %p) [[NUW]] |
| ; CHECK: true: |
| ; CHECK: call ptr @llvm.objc.autorelease(ptr %p) [[NUW]] |
| ; CHECK: {{^}}} |
| define void @test46(ptr %p, i1 %a) { |
| entry: |
| call ptr @llvm.objc.retain(ptr %p) |
| br i1 %a, label %true, label %false |
| |
| true: |
| call ptr @llvm.objc.autorelease(ptr %p) |
| call void @use_pointer(ptr %p) |
| ret void |
| |
| false: |
| ret void |
| } |
| |
| ; Delete no-op cast calls. |
| |
| ; CHECK-LABEL: define ptr @test47( |
| ; CHECK-NOT: call |
| ; CHECK: ret ptr %p |
| ; CHECK: {{^}}} |
| define ptr @test47(ptr %p) nounwind { |
| %x = call ptr @llvm.objc.retainedObject(ptr %p) |
| ret ptr %x |
| } |
| |
| ; Delete no-op cast calls. |
| |
| ; CHECK-LABEL: define ptr @test48( |
| ; CHECK-NOT: call |
| ; CHECK: ret ptr %p |
| ; CHECK: {{^}}} |
| define ptr @test48(ptr %p) nounwind { |
| %x = call ptr @llvm.objc.unretainedObject(ptr %p) |
| ret ptr %x |
| } |
| |
| ; Delete no-op cast calls. |
| |
| ; CHECK-LABEL: define ptr @test49( |
| ; CHECK-NOT: call |
| ; CHECK: ret ptr %p |
| ; CHECK: {{^}}} |
| define ptr @test49(ptr %p) nounwind { |
| %x = call ptr @llvm.objc.unretainedPointer(ptr %p) |
| ret ptr %x |
| } |
| |
| ; Do delete retain+release with intervening stores of the address value if we |
| ; have imprecise release attached to llvm.objc.release. |
| |
| ; CHECK-LABEL: define void @test50a( |
| ; CHECK-NEXT: call ptr @llvm.objc.retain |
| ; CHECK-NEXT: call void @callee |
| ; CHECK-NEXT: store |
| ; CHECK-NEXT: call void @llvm.objc.release |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test50a(ptr %p, ptr %pp) { |
| call ptr @llvm.objc.retain(ptr %p) |
| call void @callee() |
| store ptr %p, ptr %pp |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test50b( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test50b(ptr %p, ptr %pp) { |
| call ptr @llvm.objc.retain(ptr %p) |
| call void @callee() |
| store ptr %p, ptr %pp |
| call void @llvm.objc.release(ptr %p), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| |
| ; Don't delete retain+release with intervening stores through the |
| ; address value. |
| |
| ; CHECK-LABEL: define void @test51a( |
| ; CHECK: call ptr @llvm.objc.retain(ptr %p) |
| ; CHECK: call void @llvm.objc.release(ptr %p) |
| ; CHECK: ret void |
| ; CHECK: {{^}}} |
| define void @test51a(ptr %p) { |
| call ptr @llvm.objc.retain(ptr %p) |
| call void @callee() |
| store i8 0, ptr %p |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test51b( |
| ; CHECK: call ptr @llvm.objc.retain(ptr %p) |
| ; CHECK: call void @llvm.objc.release(ptr %p) |
| ; CHECK: ret void |
| ; CHECK: {{^}}} |
| define void @test51b(ptr %p) { |
| call ptr @llvm.objc.retain(ptr %p) |
| call void @callee() |
| store i8 0, ptr %p |
| call void @llvm.objc.release(ptr %p), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Don't delete retain+release with intervening use of a pointer of |
| ; unknown provenance. |
| |
| ; CHECK-LABEL: define void @test52a( |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: call void @callee() |
| ; CHECK: call void @use_pointer(ptr %z) |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: ret void |
| ; CHECK: {{^}}} |
| define void @test52a(ptr %zz, ptr %pp) { |
| %p = load ptr, ptr %pp |
| %1 = call ptr @llvm.objc.retain(ptr %p) |
| call void @callee() |
| %z = load ptr, ptr %zz |
| call void @use_pointer(ptr %z) |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test52b( |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: call void @callee() |
| ; CHECK: call void @use_pointer(ptr %z) |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: ret void |
| ; CHECK: {{^}}} |
| define void @test52b(ptr %zz, ptr %pp) { |
| %p = load ptr, ptr %pp |
| %1 = call ptr @llvm.objc.retain(ptr %p) |
| call void @callee() |
| %z = load ptr, ptr %zz |
| call void @use_pointer(ptr %z) |
| call void @llvm.objc.release(ptr %p), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Like test52, but the pointer has function type, so it's assumed to |
| ; be not reference counted. |
| ; Oops. That's wrong. Clang sometimes uses function types gratuitously. |
| ; See rdar://10551239. |
| |
| ; CHECK-LABEL: define void @test53( |
| ; CHECK: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test53(ptr %zz, ptr %pp) { |
| %p = load ptr, ptr %pp |
| %1 = call ptr @llvm.objc.retain(ptr %p) |
| call void @callee() |
| %z = load ptr, ptr %zz |
| call void @callee_fnptr(ptr %z) |
| call void @llvm.objc.release(ptr %p) |
| ret void |
| } |
| |
| ; Convert autorelease to release if the value is unused. |
| |
| ; CHECK-LABEL: define void @test54( |
| ; CHECK: call ptr @returner() |
| ; CHECK-NEXT: call void @llvm.objc.release(ptr %t) [[NUW]], !clang.imprecise_release ![[RELEASE]] |
| ; CHECK-NEXT: ret void |
| ; CHECK: {{^}}} |
| define void @test54() { |
| %t = call ptr @returner() |
| call ptr @llvm.objc.autorelease(ptr %t) |
| ret void |
| } |
| |
| ; Nested retain+release pairs. Delete them both. |
| |
| ; CHECK-LABEL: define void @test55( |
| ; CHECK-NOT: @objc |
| ; CHECK: {{^}}} |
| define void @test55(ptr %x) { |
| entry: |
| %0 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| %1 = call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @llvm.objc.release(ptr %x) nounwind |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; Nested retain+release pairs where the inner pair depends |
| ; on the outer pair to be removed, and then the outer pair |
| ; can be partially eliminated. Plus an extra outer pair to |
| ; eliminate, for fun. |
| |
| ; CHECK-LABEL: define void @test56( |
| ; CHECK-NOT: @objc |
| ; CHECK: if.then: |
| ; CHECK-NEXT: %0 = tail call ptr @llvm.objc.retain(ptr %x) [[NUW]] |
| ; CHECK-NEXT: tail call void @use_pointer(ptr %x) |
| ; CHECK-NEXT: tail call void @use_pointer(ptr %x) |
| ; CHECK-NEXT: tail call void @llvm.objc.release(ptr %x) [[NUW]], !clang.imprecise_release ![[RELEASE]] |
| ; CHECK-NEXT: br label %if.end |
| ; CHECK-NOT: @objc |
| ; CHECK: {{^}}} |
| define void @test56(ptr %x, i32 %n) { |
| entry: |
| %0 = tail call ptr @llvm.objc.retain(ptr %x) nounwind |
| %1 = tail call ptr @llvm.objc.retain(ptr %0) nounwind |
| %tobool = icmp eq i32 %n, 0 |
| br i1 %tobool, label %if.end, label %if.then |
| |
| if.then: ; preds = %entry |
| %2 = tail call ptr @llvm.objc.retain(ptr %1) nounwind |
| tail call void @use_pointer(ptr %2) |
| tail call void @use_pointer(ptr %2) |
| tail call void @llvm.objc.release(ptr %2) nounwind, !clang.imprecise_release !0 |
| br label %if.end |
| |
| if.end: ; preds = %entry, %if.then |
| tail call void @llvm.objc.release(ptr %1) nounwind, !clang.imprecise_release !0 |
| tail call void @llvm.objc.release(ptr %0) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; When there are adjacent retain+release pairs, the first one is known |
| ; unnecessary because the presence of the second one means that the first one |
| ; won't be deleting the object. |
| |
| ; CHECK-LABEL: define void @test57( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: tail call ptr @llvm.objc.retain(ptr %x) [[NUW]] |
| ; CHECK-NEXT: call void @use_pointer(ptr %x) |
| ; CHECK-NEXT: call void @use_pointer(ptr %x) |
| ; CHECK-NEXT: tail call ptr @llvm.objc.retain(ptr %x) [[NUW]] |
| ; CHECK-NEXT: call void @use_pointer(ptr %x) |
| ; CHECK-NEXT: call void @use_pointer(ptr %x) |
| ; CHECK-NEXT: call void @llvm.objc.release(ptr %x) [[NUW]] |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test57(ptr %x) nounwind { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; An adjacent retain+release pair is sufficient even if it will be |
| ; removed itself. |
| |
| ; CHECK-LABEL: define void @test58( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: @llvm.objc.retain |
| ; CHECK-NEXT: call void @use_pointer(ptr %x) |
| ; CHECK-NEXT: call void @use_pointer(ptr %x) |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test58(ptr %x) nounwind { |
| entry: |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; Don't delete the second retain+release pair in an adjacent set. |
| |
| ; CHECK-LABEL: define void @test59( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: %0 = tail call ptr @llvm.objc.retain(ptr %x) [[NUW]] |
| ; CHECK-NEXT: call void @use_pointer(ptr %x) |
| ; CHECK-NEXT: call void @use_pointer(ptr %x) |
| ; CHECK-NEXT: call void @llvm.objc.release(ptr %x) [[NUW]] |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test59(ptr %x) nounwind { |
| entry: |
| %a = call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @llvm.objc.release(ptr %x) nounwind |
| %b = call ptr @llvm.objc.retain(ptr %x) nounwind |
| call void @use_pointer(ptr %x) |
| call void @use_pointer(ptr %x) |
| call void @llvm.objc.release(ptr %x) nounwind |
| ret void |
| } |
| |
| ; Constant pointers to objects don't need reference counting. |
| |
| @constptr = external constant ptr |
| @something = external global ptr |
| |
| ; We have a precise lifetime retain/release here. We can not remove them since |
| ; @something is not constant. |
| |
| ; CHECK-LABEL: define void @test60a( |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK: call void @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test60a() { |
| %t = load ptr, ptr @constptr |
| %s = load ptr, ptr @something |
| call ptr @llvm.objc.retain(ptr %s) |
| call void @callee() |
| call void @use_pointer(ptr %t) |
| call void @llvm.objc.release(ptr %s) |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test60b( |
| ; CHECK: call ptr @llvm.objc.retain |
| ; CHECK-NOT: call ptr @llvm.objc.retain |
| ; CHECK-NOT: call ptr @llvm.objc.release |
| ; CHECK: {{^}}} |
| define void @test60b() { |
| %t = load ptr, ptr @constptr |
| %s = load ptr, ptr @something |
| call ptr @llvm.objc.retain(ptr %t) |
| call ptr @llvm.objc.retain(ptr %t) |
| call void @callee() |
| call void @use_pointer(ptr %s) |
| call void @llvm.objc.release(ptr %t) |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test60c( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test60c() { |
| %t = load ptr, ptr @constptr |
| %s = load ptr, ptr @something |
| call ptr @llvm.objc.retain(ptr %t) |
| call void @callee() |
| call void @use_pointer(ptr %s) |
| call void @llvm.objc.release(ptr %t), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test60d( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test60d() { |
| %t = load ptr, ptr @constptr |
| %s = load ptr, ptr @something |
| call ptr @llvm.objc.retain(ptr %t) |
| call void @callee() |
| call void @use_pointer(ptr %s) |
| call void @llvm.objc.release(ptr %t) |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test60e( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test60e() { |
| %t = load ptr, ptr @constptr |
| %s = load ptr, ptr @something |
| call ptr @llvm.objc.retain(ptr %t) |
| call void @callee() |
| call void @use_pointer(ptr %s) |
| call void @llvm.objc.release(ptr %t), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; Constant pointers to objects don't need to be considered related to other |
| ; pointers. |
| |
| ; CHECK-LABEL: define void @test61( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test61() { |
| %t = load ptr, ptr @constptr |
| call ptr @llvm.objc.retain(ptr %t) |
| call void @callee() |
| call void @use_pointer(ptr %t) |
| call void @llvm.objc.release(ptr %t) |
| ret void |
| } |
| |
| ; Delete a retain matched by releases when one is inside the loop and the |
| ; other is outside the loop. |
| |
| ; CHECK-LABEL: define void @test62( |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: {{^}}} |
| define void @test62(ptr %x, ptr %p) nounwind { |
| entry: |
| br label %loop |
| |
| loop: |
| call ptr @llvm.objc.retain(ptr %x) |
| %q = load i1, ptr %p |
| br i1 %q, label %loop.more, label %exit |
| |
| loop.more: |
| call void @llvm.objc.release(ptr %x) |
| br label %loop |
| |
| exit: |
| call void @llvm.objc.release(ptr %x) |
| ret void |
| } |
| |
| ; Like test62 but with no release in exit. |
| ; Don't delete anything! |
| |
| ; CHECK-LABEL: define void @test63( |
| ; CHECK: loop: |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %x) |
| ; CHECK: loop.more: |
| ; CHECK: call void @llvm.objc.release(ptr %x) |
| ; CHECK: {{^}}} |
| define void @test63(ptr %x, ptr %p) nounwind { |
| entry: |
| br label %loop |
| |
| loop: |
| call ptr @llvm.objc.retain(ptr %x) |
| %q = load i1, ptr %p |
| br i1 %q, label %loop.more, label %exit |
| |
| loop.more: |
| call void @llvm.objc.release(ptr %x) |
| br label %loop |
| |
| exit: |
| ret void |
| } |
| |
| ; Like test62 but with no release in loop.more. |
| ; Don't delete anything! |
| |
| ; CHECK-LABEL: define void @test64( |
| ; CHECK: loop: |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %x) |
| ; CHECK: exit: |
| ; CHECK: call void @llvm.objc.release(ptr %x) |
| ; CHECK: {{^}}} |
| define void @test64(ptr %x, ptr %p) nounwind { |
| entry: |
| br label %loop |
| |
| loop: |
| call ptr @llvm.objc.retain(ptr %x) |
| %q = load i1, ptr %p |
| br i1 %q, label %loop.more, label %exit |
| |
| loop.more: |
| br label %loop |
| |
| exit: |
| call void @llvm.objc.release(ptr %x) |
| ret void |
| } |
| |
| ; Move an autorelease past a phi with a null. |
| |
| ; CHECK-LABEL: define ptr @test65( |
| ; CHECK: if.then: |
| ; CHECK: call ptr @llvm.objc.autorelease( |
| ; CHECK: return: |
| ; CHECK-NOT: @llvm.objc.autorelease |
| ; CHECK: {{^}}} |
| define ptr @test65(i1 %x) { |
| entry: |
| br i1 %x, label %return, label %if.then |
| |
| if.then: ; preds = %entry |
| %c = call ptr @returner() |
| %s = call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %c) nounwind |
| br label %return |
| |
| return: ; preds = %if.then, %entry |
| %retval = phi ptr [ %s, %if.then ], [ null, %entry ] |
| %q = call ptr @llvm.objc.autorelease(ptr %retval) nounwind |
| ret ptr %retval |
| } |
| |
| ; Don't move an autorelease past an autorelease pool boundary. |
| |
| ; CHECK-LABEL: define ptr @test65b( |
| ; CHECK: if.then: |
| ; CHECK-NOT: @llvm.objc.autorelease |
| ; CHECK: return: |
| ; CHECK: call ptr @llvm.objc.autorelease( |
| ; CHECK: {{^}}} |
| define ptr @test65b(i1 %x) { |
| entry: |
| %t = call ptr @llvm.objc.autoreleasePoolPush() |
| br i1 %x, label %return, label %if.then |
| |
| if.then: ; preds = %entry |
| %c = call ptr @returner() |
| %s = call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %c) nounwind |
| br label %return |
| |
| return: ; preds = %if.then, %entry |
| %retval = phi ptr [ %s, %if.then ], [ null, %entry ] |
| call void @llvm.objc.autoreleasePoolPop(ptr %t) |
| %q = call ptr @llvm.objc.autorelease(ptr %retval) nounwind |
| ret ptr %retval |
| } |
| |
| ; Don't move an autoreleaseReuturnValue, which would break |
| ; the RV optimization. |
| |
| ; CHECK-LABEL: define ptr @test65c( |
| ; CHECK: if.then: |
| ; CHECK-NOT: @llvm.objc.autorelease |
| ; CHECK: return: |
| ; CHECK: call ptr @llvm.objc.autoreleaseReturnValue( |
| ; CHECK: {{^}}} |
| define ptr @test65c(i1 %x) { |
| entry: |
| br i1 %x, label %return, label %if.then |
| |
| if.then: ; preds = %entry |
| %c = call ptr @returner() |
| %s = call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %c) nounwind |
| br label %return |
| |
| return: ; preds = %if.then, %entry |
| %retval = phi ptr [ %s, %if.then ], [ null, %entry ] |
| %q = call ptr @llvm.objc.autoreleaseReturnValue(ptr %retval) nounwind |
| ret ptr %retval |
| } |
| |
| ; CHECK-LABEL: define ptr @test65d( |
| ; CHECK: if.then: |
| ; CHECK-NOT: @llvm.objc.autorelease |
| ; CHECK: return: |
| ; CHECK: call ptr @llvm.objc.autoreleaseReturnValue( |
| ; CHECK: {{^}}} |
| define ptr @test65d(i1 %x) { |
| entry: |
| br i1 %x, label %return, label %if.then |
| |
| if.then: ; preds = %entry |
| %c = call ptr @returner() |
| %s = call ptr @llvm.objc.unsafeClaimAutoreleasedReturnValue(ptr %c) nounwind |
| br label %return |
| |
| return: ; preds = %if.then, %entry |
| %retval = phi ptr [ %s, %if.then ], [ null, %entry ] |
| %q = call ptr @llvm.objc.autoreleaseReturnValue(ptr %retval) nounwind |
| ret ptr %retval |
| } |
| |
| ; An llvm.objc.retain can serve as a may-use for a different pointer. |
| ; rdar://11931823 |
| |
| ; CHECK-LABEL: define void @test66a( |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %cond) [[NUW]] |
| ; CHECK: tail call void @llvm.objc.release(ptr %call) [[NUW]] |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %tmp8) [[NUW]] |
| ; CHECK: tail call void @llvm.objc.release(ptr %cond) [[NUW]] |
| ; CHECK: {{^}}} |
| define void @test66a(ptr %tmp5, ptr %bar, i1 %tobool, i1 %tobool1, ptr %call) { |
| entry: |
| br i1 %tobool, label %cond.true, label %cond.end |
| |
| cond.true: |
| br label %cond.end |
| |
| cond.end: ; preds = %cond.true, %entry |
| %cond = phi ptr [ %tmp5, %cond.true ], [ %call, %entry ] |
| %tmp7 = tail call ptr @llvm.objc.retain(ptr %cond) nounwind |
| tail call void @llvm.objc.release(ptr %call) nounwind |
| %tmp8 = select i1 %tobool1, ptr %cond, ptr %bar |
| %tmp9 = tail call ptr @llvm.objc.retain(ptr %tmp8) nounwind |
| tail call void @llvm.objc.release(ptr %cond) nounwind |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test66b( |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %cond) [[NUW]] |
| ; CHECK: tail call void @llvm.objc.release(ptr %call) [[NUW]] |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %tmp8) [[NUW]] |
| ; CHECK: tail call void @llvm.objc.release(ptr %cond) [[NUW]] |
| ; CHECK: {{^}}} |
| define void @test66b(ptr %tmp5, ptr %bar, i1 %tobool, i1 %tobool1, ptr %call) { |
| entry: |
| br i1 %tobool, label %cond.true, label %cond.end |
| |
| cond.true: |
| br label %cond.end |
| |
| cond.end: ; preds = %cond.true, %entry |
| %cond = phi ptr [ %tmp5, %cond.true ], [ %call, %entry ] |
| %tmp7 = tail call ptr @llvm.objc.retain(ptr %cond) nounwind |
| tail call void @llvm.objc.release(ptr %call) nounwind, !clang.imprecise_release !0 |
| %tmp8 = select i1 %tobool1, ptr %cond, ptr %bar |
| %tmp9 = tail call ptr @llvm.objc.retain(ptr %tmp8) nounwind |
| tail call void @llvm.objc.release(ptr %cond) nounwind |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test66c( |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %cond) [[NUW]] |
| ; CHECK: tail call void @llvm.objc.release(ptr %call) [[NUW]] |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %tmp8) [[NUW]] |
| ; CHECK: tail call void @llvm.objc.release(ptr %cond) [[NUW]] |
| ; CHECK: {{^}}} |
| define void @test66c(ptr %tmp5, ptr %bar, i1 %tobool, i1 %tobool1, ptr %call) { |
| entry: |
| br i1 %tobool, label %cond.true, label %cond.end |
| |
| cond.true: |
| br label %cond.end |
| |
| cond.end: ; preds = %cond.true, %entry |
| %cond = phi ptr [ %tmp5, %cond.true ], [ %call, %entry ] |
| %tmp7 = tail call ptr @llvm.objc.retain(ptr %cond) nounwind |
| tail call void @llvm.objc.release(ptr %call) nounwind |
| %tmp8 = select i1 %tobool1, ptr %cond, ptr %bar |
| %tmp9 = tail call ptr @llvm.objc.retain(ptr %tmp8) nounwind, !clang.imprecise_release !0 |
| tail call void @llvm.objc.release(ptr %cond) nounwind |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test66d( |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %cond) [[NUW]] |
| ; CHECK: tail call void @llvm.objc.release(ptr %call) [[NUW]] |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %tmp8) [[NUW]] |
| ; CHECK: tail call void @llvm.objc.release(ptr %cond) [[NUW]] |
| ; CHECK: {{^}}} |
| define void @test66d(ptr %tmp5, ptr %bar, i1 %tobool, i1 %tobool1, ptr %call) { |
| entry: |
| br i1 %tobool, label %cond.true, label %cond.end |
| |
| cond.true: |
| br label %cond.end |
| |
| cond.end: ; preds = %cond.true, %entry |
| %cond = phi ptr [ %tmp5, %cond.true ], [ %call, %entry ] |
| %tmp7 = tail call ptr @llvm.objc.retain(ptr %cond) nounwind |
| tail call void @llvm.objc.release(ptr %call) nounwind, !clang.imprecise_release !0 |
| %tmp8 = select i1 %tobool1, ptr %cond, ptr %bar |
| %tmp9 = tail call ptr @llvm.objc.retain(ptr %tmp8) nounwind |
| tail call void @llvm.objc.release(ptr %cond) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; A few real-world testcases. |
| |
| @.str4 = private unnamed_addr constant [33 x i8] c"-[A z] = { %f, %f, { %f, %f } }\0A\00" |
| @"OBJC_IVAR_$_A.myZ" = global i64 20, section "__DATA, __objc_const", align 8 |
| declare i32 @printf(ptr nocapture, ...) nounwind |
| declare i32 @puts(ptr nocapture) nounwind |
| @str = internal constant [16 x i8] c"-[ Top0 _getX ]\00" |
| |
| ; FIXME: Should be able to eliminate the retain and release |
| ; CHECK-LABEL: define { <2 x float>, <2 x float> } @"\01-[A z]"(ptr %self, ptr nocapture %_cmd) |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %self) |
| ; CHECK-NEXT: %call = tail call i32 (ptr, ...) @printf( |
| ; CHECK: tail call void @llvm.objc.release(ptr %self) |
| ; CHECK: {{^}}} |
| define { <2 x float>, <2 x float> } @"\01-[A z]"(ptr %self, ptr nocapture %_cmd) nounwind { |
| invoke.cont: |
| %i1 = tail call ptr @llvm.objc.retain(ptr %self) nounwind |
| tail call void @llvm.dbg.value(metadata ptr %self, metadata !DILocalVariable(scope: !2), metadata !DIExpression()), !dbg !DILocation(scope: !2) |
| tail call void @llvm.dbg.value(metadata ptr %self, metadata !DILocalVariable(scope: !2), metadata !DIExpression()), !dbg !DILocation(scope: !2) |
| %ivar = load i64, ptr @"OBJC_IVAR_$_A.myZ", align 8 |
| %add.ptr = getelementptr i8, ptr %self, i64 %ivar |
| %tmp2 = load float, ptr %add.ptr, align 4 |
| %conv = fpext float %tmp2 to double |
| %add.ptr.sum = add i64 %ivar, 4 |
| %tmp6 = getelementptr inbounds i8, ptr %self, i64 %add.ptr.sum |
| %tmp7 = load float, ptr %tmp6, align 4 |
| %conv8 = fpext float %tmp7 to double |
| %add.ptr.sum36 = add i64 %ivar, 8 |
| %tmp12 = getelementptr inbounds i8, ptr %self, i64 %add.ptr.sum36 |
| %tmp13 = load float, ptr %tmp12, align 4 |
| %conv14 = fpext float %tmp13 to double |
| %tmp12.sum = add i64 %ivar, 12 |
| %arrayidx19 = getelementptr inbounds i8, ptr %self, i64 %tmp12.sum |
| %tmp20 = load float, ptr %arrayidx19, align 4 |
| %conv21 = fpext float %tmp20 to double |
| %call = tail call i32 (ptr, ...) @printf(ptr @.str4, double %conv, double %conv8, double %conv14, double %conv21) |
| %ivar23 = load i64, ptr @"OBJC_IVAR_$_A.myZ", align 8 |
| %add.ptr24 = getelementptr i8, ptr %self, i64 %ivar23 |
| %srcval = load i128, ptr %add.ptr24, align 4 |
| tail call void @llvm.objc.release(ptr %self) nounwind |
| %tmp29 = trunc i128 %srcval to i64 |
| %tmp30 = bitcast i64 %tmp29 to <2 x float> |
| %tmp31 = insertvalue { <2 x float>, <2 x float> } undef, <2 x float> %tmp30, 0 |
| %tmp32 = lshr i128 %srcval, 64 |
| %tmp33 = trunc i128 %tmp32 to i64 |
| %tmp34 = bitcast i64 %tmp33 to <2 x float> |
| %tmp35 = insertvalue { <2 x float>, <2 x float> } %tmp31, <2 x float> %tmp34, 1 |
| ret { <2 x float>, <2 x float> } %tmp35 |
| } |
| |
| ; FIXME: Should be able to eliminate the retain and release |
| ; CHECK-LABEL: @"\01-[Top0 _getX]"(ptr %self, ptr nocapture %_cmd) |
| ; CHECK: tail call ptr @llvm.objc.retain(ptr %self) |
| ; CHECK: %puts = tail call i32 @puts |
| ; CHECK: tail call void @llvm.objc.release(ptr %self) |
| define i32 @"\01-[Top0 _getX]"(ptr %self, ptr nocapture %_cmd) nounwind { |
| invoke.cont: |
| %i1 = tail call ptr @llvm.objc.retain(ptr %self) nounwind |
| %puts = tail call i32 @puts(ptr @str) |
| tail call void @llvm.objc.release(ptr %self) nounwind |
| ret i32 0 |
| } |
| |
| @"\01L_OBJC_METH_VAR_NAME_" = internal global [5 x i8] c"frob\00", section "__TEXT,__cstring,cstring_literals", align 1@"\01L_OBJC_SELECTOR_REFERENCES_" = internal global ptr @"\01L_OBJC_METH_VAR_NAME_", section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_IMAGE_INFO" = internal constant [2 x i32] [i32 0, i32 16], section "__DATA, __objc_imageinfo, regular, no_dead_strip" |
| @llvm.used = appending global [3 x ptr] [ptr @"\01L_OBJC_METH_VAR_NAME_", ptr @"\01L_OBJC_SELECTOR_REFERENCES_", ptr @"\01L_OBJC_IMAGE_INFO"], section "llvm.metadata" |
| |
| ; A simple loop. Eliminate the retain and release inside of it! |
| |
| ; CHECK: define void @loop(ptr %x, i64 %n) { |
| ; CHECK: for.body: |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: @objc_msgSend |
| ; CHECK-NOT: @llvm.objc. |
| ; CHECK: for.end: |
| ; CHECK: {{^}}} |
| define void @loop(ptr %x, i64 %n) { |
| entry: |
| %0 = tail call ptr @llvm.objc.retain(ptr %x) nounwind |
| %cmp9 = icmp sgt i64 %n, 0 |
| br i1 %cmp9, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.body |
| %i.010 = phi i64 [ %inc, %for.body ], [ 0, %entry ] |
| %1 = tail call ptr @llvm.objc.retain(ptr %x) nounwind |
| %tmp5 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_", align 8 |
| %call = tail call ptr (ptr, ptr, ...) @objc_msgSend(ptr %1, ptr %tmp5) |
| tail call void @llvm.objc.release(ptr %1) nounwind, !clang.imprecise_release !0 |
| %inc = add nsw i64 %i.010, 1 |
| %exitcond = icmp eq i64 %inc, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.body, %entry |
| tail call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; ObjCARCOpt can delete the retain,release on self. |
| |
| ; CHECK: define void @TextEditTest(ptr %self, ptr %pboard) { |
| ; CHECK-NOT: call ptr @llvm.objc.retain(ptr %tmp7) |
| ; CHECK: {{^}}} |
| |
| %0 = type { ptr, ptr } |
| %1 = type opaque |
| %2 = type opaque |
| %3 = type opaque |
| %4 = type opaque |
| %5 = type opaque |
| %struct.NSConstantString = type { ptr, i32, ptr, i64 } |
| %struct._NSRange = type { i64, i64 } |
| %struct.__CFString = type opaque |
| %struct.__method_list_t = type { i32, i32, [0 x %struct._objc_method] } |
| %struct._class_ro_t = type { i32, i32, i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr } |
| %struct._class_t = type { ptr, ptr, ptr, ptr, ptr } |
| %struct._ivar_list_t = type { i32, i32, [0 x %struct._ivar_t] } |
| %struct._ivar_t = type { ptr, ptr, ptr, i32, i32 } |
| %struct._message_ref_t = type { ptr, ptr } |
| %struct._objc_cache = type opaque |
| %struct._objc_method = type { ptr, ptr, ptr } |
| %struct._objc_protocol_list = type { i64, [0 x ptr] } |
| %struct._prop_list_t = type { i32, i32, [0 x %struct._message_ref_t] } |
| %struct._protocol_t = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i32 } |
| |
| @"\01L_OBJC_CLASSLIST_REFERENCES_$_17" = external hidden global ptr, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8 |
| @kUTTypePlainText = external constant ptr |
| @"\01L_OBJC_SELECTOR_REFERENCES_19" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_SELECTOR_REFERENCES_21" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_SELECTOR_REFERENCES_23" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_SELECTOR_REFERENCES_25" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_CLASSLIST_REFERENCES_$_26" = external hidden global ptr, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8 |
| @"\01L_OBJC_SELECTOR_REFERENCES_28" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_CLASSLIST_REFERENCES_$_29" = external hidden global ptr, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8 |
| @"\01L_OBJC_SELECTOR_REFERENCES_31" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_SELECTOR_REFERENCES_33" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_SELECTOR_REFERENCES_35" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_SELECTOR_REFERENCES_37" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_CLASSLIST_REFERENCES_$_38" = external hidden global ptr, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8 |
| @"\01L_OBJC_SELECTOR_REFERENCES_40" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_SELECTOR_REFERENCES_42" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @_unnamed_cfstring_44 = external hidden constant %struct.NSConstantString, section "__DATA,__cfstring" |
| @"\01L_OBJC_SELECTOR_REFERENCES_46" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_SELECTOR_REFERENCES_48" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01l_objc_msgSend_fixup_isEqual_" = external hidden global %0, section "__DATA, __objc_msgrefs, coalesced", align 16 |
| @"\01L_OBJC_CLASSLIST_REFERENCES_$_50" = external hidden global ptr, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8 |
| @NSCocoaErrorDomain = external constant ptr |
| @"\01L_OBJC_CLASSLIST_REFERENCES_$_51" = external hidden global ptr, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8 |
| @NSFilePathErrorKey = external constant ptr |
| @"\01L_OBJC_SELECTOR_REFERENCES_53" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_SELECTOR_REFERENCES_55" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_CLASSLIST_REFERENCES_$_56" = external hidden global ptr, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8 |
| @"\01L_OBJC_SELECTOR_REFERENCES_58" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| @"\01L_OBJC_SELECTOR_REFERENCES_60" = external hidden global ptr, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip" |
| |
| declare ptr @truncatedString(ptr, i64) |
| define void @TextEditTest(ptr %self, ptr %pboard) { |
| entry: |
| %err = alloca ptr, align 8 |
| %tmp8 = call ptr @llvm.objc.retain(ptr %self) nounwind |
| store ptr null, ptr %err, align 8 |
| %tmp1 = load ptr, ptr @"\01L_OBJC_CLASSLIST_REFERENCES_$_17", align 8 |
| %tmp2 = load ptr, ptr @kUTTypePlainText, align 8 |
| %tmp3 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_19", align 8 |
| %call5 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %tmp1, ptr %tmp3, ptr %tmp2) |
| %tmp5 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_21", align 8 |
| %call76 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %pboard, ptr %tmp5, ptr %call5) |
| %tmp9 = call ptr @llvm.objc.retain(ptr %call76) nounwind |
| %tobool = icmp eq ptr %tmp9, null |
| br i1 %tobool, label %end, label %land.lhs.true |
| |
| land.lhs.true: ; preds = %entry |
| %tmp11 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_23", align 8 |
| %call137 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %pboard, ptr %tmp11, ptr %tmp9) |
| %tmp10 = call ptr @llvm.objc.retain(ptr %call137) nounwind |
| call void @llvm.objc.release(ptr null) nounwind |
| %tmp12 = call ptr @llvm.objc.retain(ptr %call137) nounwind |
| call void @llvm.objc.release(ptr null) nounwind |
| %tobool16 = icmp eq ptr %call137, null |
| br i1 %tobool16, label %end, label %if.then |
| |
| if.then: ; preds = %land.lhs.true |
| %tmp19 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_25", align 8 |
| %call21 = call signext i8 @objc_msgSend(ptr %call137, ptr %tmp19) |
| %tobool22 = icmp eq i8 %call21, 0 |
| br i1 %tobool22, label %if.then44, label %land.lhs.true23 |
| |
| land.lhs.true23: ; preds = %if.then |
| %tmp24 = load ptr, ptr @"\01L_OBJC_CLASSLIST_REFERENCES_$_26", align 8 |
| %tmp26 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_28", align 8 |
| %call2822 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %tmp24, ptr %tmp26, ptr %call137) |
| %tmp14 = call ptr @llvm.objc.retain(ptr %call2822) nounwind |
| call void @llvm.objc.release(ptr null) nounwind |
| %tobool30 = icmp eq ptr %call2822, null |
| br i1 %tobool30, label %if.then44, label %if.end |
| |
| if.end: ; preds = %land.lhs.true23 |
| %tmp32 = load ptr, ptr @"\01L_OBJC_CLASSLIST_REFERENCES_$_29", align 8 |
| %tmp33 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_31", align 8 |
| %call35 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %tmp32, ptr %tmp33) |
| %tmp37 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_33", align 8 |
| %call3923 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %call35, ptr %tmp37, ptr %call2822, i32 signext 1, ptr %err) |
| %cmp = icmp eq ptr %call3923, null |
| br i1 %cmp, label %if.then44, label %end |
| |
| if.then44: ; preds = %if.end, %land.lhs.true23, %if.then |
| %url.025 = phi ptr [ %call2822, %if.end ], [ %call2822, %land.lhs.true23 ], [ null, %if.then ] |
| %tmp49 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_35", align 8 |
| %call51 = call %struct._NSRange @objc_msgSend(ptr %call137, ptr %tmp49, i64 0, i64 0) |
| %call513 = extractvalue %struct._NSRange %call51, 0 |
| %call514 = extractvalue %struct._NSRange %call51, 1 |
| %tmp52 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_37", align 8 |
| %call548 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %call137, ptr %tmp52, i64 %call513, i64 %call514) |
| %tmp55 = load ptr, ptr @"\01L_OBJC_CLASSLIST_REFERENCES_$_38", align 8 |
| %tmp56 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_40", align 8 |
| %call58 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %tmp55, ptr %tmp56) |
| %tmp59 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_42", align 8 |
| %call6110 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %call548, ptr %tmp59, ptr %call58) |
| %tmp15 = call ptr @llvm.objc.retain(ptr %call6110) nounwind |
| call void @llvm.objc.release(ptr %call137) nounwind |
| %tmp64 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_46", align 8 |
| %call66 = call signext i8 @objc_msgSend(ptr %call6110, ptr %tmp64, ptr @_unnamed_cfstring_44) |
| %tobool67 = icmp eq i8 %call66, 0 |
| br i1 %tobool67, label %if.end74, label %if.then68 |
| |
| if.then68: ; preds = %if.then44 |
| %tmp70 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_48", align 8 |
| %call7220 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %call6110, ptr %tmp70) |
| %tmp16 = call ptr @llvm.objc.retain(ptr %call7220) nounwind |
| call void @llvm.objc.release(ptr %call6110) nounwind |
| br label %if.end74 |
| |
| if.end74: ; preds = %if.then68, %if.then44 |
| %filename.0.in = phi ptr [ %call7220, %if.then68 ], [ %call6110, %if.then44 ] |
| %tmp17 = load ptr, ptr @"\01l_objc_msgSend_fixup_isEqual_", align 16 |
| %call78 = call signext i8 (ptr, ptr, ptr, ...) %tmp17(ptr %call137, ptr @"\01l_objc_msgSend_fixup_isEqual_", ptr %filename.0.in) |
| %tobool79 = icmp eq i8 %call78, 0 |
| br i1 %tobool79, label %land.lhs.true80, label %if.then109 |
| |
| land.lhs.true80: ; preds = %if.end74 |
| %tmp82 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_25", align 8 |
| %call84 = call signext i8 @objc_msgSend(ptr %filename.0.in, ptr %tmp82) |
| %tobool86 = icmp eq i8 %call84, 0 |
| br i1 %tobool86, label %if.then109, label %if.end106 |
| |
| if.end106: ; preds = %land.lhs.true80 |
| %tmp88 = load ptr, ptr @"\01L_OBJC_CLASSLIST_REFERENCES_$_26", align 8 |
| %tmp90 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_28", align 8 |
| %call9218 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %tmp88, ptr %tmp90, ptr %filename.0.in) |
| %tmp21 = call ptr @llvm.objc.retain(ptr %call9218) nounwind |
| call void @llvm.objc.release(ptr %url.025) nounwind |
| %tmp94 = load ptr, ptr @"\01L_OBJC_CLASSLIST_REFERENCES_$_29", align 8 |
| %tmp95 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_31", align 8 |
| %call97 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %tmp94, ptr %tmp95) |
| %tmp99 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_33", align 8 |
| %call10119 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %call97, ptr %tmp99, ptr %call9218, i32 signext 1, ptr %err) |
| %phitmp = icmp eq ptr %call10119, null |
| br i1 %phitmp, label %if.then109, label %end |
| |
| if.then109: ; preds = %if.end106, %land.lhs.true80, %if.end74 |
| %url.129 = phi ptr [ %call9218, %if.end106 ], [ %url.025, %if.end74 ], [ %url.025, %land.lhs.true80 ] |
| %tmp110 = load ptr, ptr %err, align 8 |
| %tobool111 = icmp eq ptr %tmp110, null |
| br i1 %tobool111, label %if.then112, label %if.end125 |
| |
| if.then112: ; preds = %if.then109 |
| %tmp113 = load ptr, ptr @"\01L_OBJC_CLASSLIST_REFERENCES_$_50", align 8 |
| %tmp114 = load ptr, ptr @NSCocoaErrorDomain, align 8 |
| %tmp115 = load ptr, ptr @"\01L_OBJC_CLASSLIST_REFERENCES_$_51", align 8 |
| %call117 = call ptr @truncatedString(ptr %filename.0.in, i64 1034) |
| %tmp118 = load ptr, ptr @NSFilePathErrorKey, align 8 |
| %tmp119 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_53", align 8 |
| %call12113 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %tmp115, ptr %tmp119, ptr %call117, ptr %tmp118, ptr null) |
| %tmp122 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_55", align 8 |
| %call12414 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %tmp113, ptr %tmp122, ptr %tmp114, i64 258, ptr %call12113) |
| %tmp23 = call ptr @llvm.objc.retain(ptr %call12414) nounwind |
| %tmp25 = call ptr @llvm.objc.autorelease(ptr %tmp23) nounwind |
| store ptr %tmp25, ptr %err, align 8 |
| br label %if.end125 |
| |
| if.end125: ; preds = %if.then112, %if.then109 |
| %tmp127 = phi ptr [ %tmp110, %if.then109 ], [ %tmp25, %if.then112 ] |
| %tmp126 = load ptr, ptr @"\01L_OBJC_CLASSLIST_REFERENCES_$_56", align 8 |
| %tmp128 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_58", align 8 |
| %call13015 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %tmp126, ptr %tmp128, ptr %tmp127) |
| %tmp131 = load ptr, ptr @"\01L_OBJC_SELECTOR_REFERENCES_60", align 8 |
| %call13317 = call ptr (ptr, ptr, ...) @objc_msgSend(ptr %call13015, ptr %tmp131) |
| br label %end |
| |
| end: ; preds = %if.end125, %if.end106, %if.end, %land.lhs.true, %entry |
| %filename.2 = phi ptr [ %filename.0.in, %if.end106 ], [ %filename.0.in, %if.end125 ], [ %call137, %land.lhs.true ], [ null, %entry ], [ %call137, %if.end ] |
| %origFilename.0 = phi ptr [ %call137, %if.end106 ], [ %call137, %if.end125 ], [ %call137, %land.lhs.true ], [ null, %entry ], [ %call137, %if.end ] |
| %url.2 = phi ptr [ %call9218, %if.end106 ], [ %url.129, %if.end125 ], [ null, %land.lhs.true ], [ null, %entry ], [ %call2822, %if.end ] |
| call void @llvm.objc.release(ptr %tmp9) nounwind, !clang.imprecise_release !0 |
| call void @llvm.objc.release(ptr %url.2) nounwind, !clang.imprecise_release !0 |
| call void @llvm.objc.release(ptr %origFilename.0) nounwind, !clang.imprecise_release !0 |
| call void @llvm.objc.release(ptr %filename.2) nounwind, !clang.imprecise_release !0 |
| call void @llvm.objc.release(ptr %self) nounwind, !clang.imprecise_release !0 |
| ret void |
| } |
| |
| declare i32 @__gxx_personality_v0(...) |
| |
| declare i32 @llvm.objc.sync.enter(ptr) |
| declare i32 @llvm.objc.sync.exit(ptr) |
| |
| ; Make sure that we understand that objc_sync_{enter,exit} are IC_User not |
| ; IC_Call/IC_CallOrUser. |
| |
| ; CHECK-LABEL: define void @test67( |
| ; CHECK-NEXT: call i32 @llvm.objc.sync.enter(ptr %x) |
| ; CHECK-NEXT: call i32 @llvm.objc.sync.exit(ptr %x) |
| ; CHECK-NEXT: ret void |
| ; CHECK-NEXT: } |
| define void @test67(ptr %x) { |
| call ptr @llvm.objc.retain(ptr %x) |
| call i32 @llvm.objc.sync.enter(ptr %x) |
| call i32 @llvm.objc.sync.exit(ptr %x) |
| call void @llvm.objc.release(ptr %x), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test68( |
| ; CHECK-NOT: call |
| ; CHECK: call void @callee2( |
| ; CHECK-NOT: call |
| ; CHECK: ret void |
| |
| define void @test68(ptr %a, ptr %b) { |
| call ptr @llvm.objc.retain(ptr %a) |
| call ptr @llvm.objc.retain(ptr %b) |
| call void @callee2(ptr %a, ptr %b) |
| call void @llvm.objc.release(ptr %b), !clang.imprecise_release !0 |
| call void @llvm.objc.release(ptr %a), !clang.imprecise_release !0 |
| ret void |
| } |
| |
| !llvm.module.flags = !{!1} |
| !llvm.dbg.cu = !{!3} |
| |
| !0 = !{} |
| !1 = !{i32 1, !"Debug Info Version", i32 3} |
| !2 = distinct !DISubprogram(unit: !3) |
| !3 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang", |
| file: !4, |
| isOptimized: true, flags: "-O2", |
| splitDebugFilename: "abc.debug", emissionKind: 2) |
| !4 = !DIFile(filename: "path/to/file", directory: "/path/to/dir") |
| !5 = !{i32 2, !"Debug Info Version", i32 3} |
| |
| ; CHECK: attributes [[NUW]] = { nounwind } |
| ; CHECK: attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) } |
| ; CHECK: ![[RELEASE]] = !{} |