| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -make-guards-explicit < %s | FileCheck %s |
| ; RUN: opt -S -passes=make-guards-explicit < %s | FileCheck %s |
| |
| declare void @llvm.experimental.guard(i1,...) |
| |
| ; Check that a sole guard can be turned into explicit guards form. |
| define void @trivial_guard(i1 %cond) { |
| ; CHECK-LABEL: @trivial_guard( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition() |
| ; CHECK-NEXT: [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[COND:%.*]], [[WIDENABLE_COND]] |
| ; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED:%.*]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK: deopt: |
| ; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 123, i64 456) ] |
| ; CHECK-NEXT: ret void |
| ; CHECK: guarded: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| call void(i1, ...) @llvm.experimental.guard(i1 %cond) [ "deopt"(i32 123, i64 456) ] |
| ret void |
| } |
| |
| ; Check that a sequence of guards can be turned into explicit guards form. |
| define void @trivial_guard_sequence(i1 %cond1, i1 %cond2, i1 %cond3) { |
| ; CHECK-LABEL: @trivial_guard_sequence( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition() |
| ; CHECK-NEXT: [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[COND1:%.*]], [[WIDENABLE_COND]] |
| ; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED:%.*]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK: deopt: |
| ; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 123, i64 456) ] |
| ; CHECK-NEXT: ret void |
| ; CHECK: guarded: |
| ; CHECK-NEXT: [[WIDENABLE_COND3:%.*]] = call i1 @llvm.experimental.widenable.condition() |
| ; CHECK-NEXT: [[EXIPLICIT_GUARD_COND4:%.*]] = and i1 [[COND2:%.*]], [[WIDENABLE_COND3]] |
| ; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND4]], label [[GUARDED1:%.*]], label [[DEOPT2:%.*]], !prof !0 |
| ; CHECK: deopt2: |
| ; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 789, i64 123) ] |
| ; CHECK-NEXT: ret void |
| ; CHECK: guarded1: |
| ; CHECK-NEXT: [[WIDENABLE_COND7:%.*]] = call i1 @llvm.experimental.widenable.condition() |
| ; CHECK-NEXT: [[EXIPLICIT_GUARD_COND8:%.*]] = and i1 [[COND3:%.*]], [[WIDENABLE_COND7]] |
| ; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND8]], label [[GUARDED5:%.*]], label [[DEOPT6:%.*]], !prof !0 |
| ; CHECK: deopt6: |
| ; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 456, i64 789) ] |
| ; CHECK-NEXT: ret void |
| ; CHECK: guarded5: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| call void(i1, ...) @llvm.experimental.guard(i1 %cond1) [ "deopt"(i32 123, i64 456) ] |
| call void(i1, ...) @llvm.experimental.guard(i1 %cond2) [ "deopt"(i32 789, i64 123) ] |
| call void(i1, ...) @llvm.experimental.guard(i1 %cond3) [ "deopt"(i32 456, i64 789) ] |
| ret void |
| } |
| |
| ; Check that all instructions between the guards preserve. |
| define void @split_block_contents(i1 %cond1, i1 %cond2, i1 %cond3, i32* %p) { |
| ; CHECK-LABEL: @split_block_contents( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: store i32 0, i32* [[P:%.*]] |
| ; CHECK-NEXT: [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition() |
| ; CHECK-NEXT: [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[COND1:%.*]], [[WIDENABLE_COND]] |
| ; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED:%.*]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK: deopt: |
| ; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 123, i64 456) ] |
| ; CHECK-NEXT: ret void |
| ; CHECK: guarded: |
| ; CHECK-NEXT: store i32 1, i32* [[P]] |
| ; CHECK-NEXT: [[WIDENABLE_COND3:%.*]] = call i1 @llvm.experimental.widenable.condition() |
| ; CHECK-NEXT: [[EXIPLICIT_GUARD_COND4:%.*]] = and i1 [[COND2:%.*]], [[WIDENABLE_COND3]] |
| ; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND4]], label [[GUARDED1:%.*]], label [[DEOPT2:%.*]], !prof !0 |
| ; CHECK: deopt2: |
| ; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 789, i64 123) ] |
| ; CHECK-NEXT: ret void |
| ; CHECK: guarded1: |
| ; CHECK-NEXT: store i32 2, i32* [[P]] |
| ; CHECK-NEXT: [[WIDENABLE_COND7:%.*]] = call i1 @llvm.experimental.widenable.condition() |
| ; CHECK-NEXT: [[EXIPLICIT_GUARD_COND8:%.*]] = and i1 [[COND3:%.*]], [[WIDENABLE_COND7]] |
| ; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND8]], label [[GUARDED5:%.*]], label [[DEOPT6:%.*]], !prof !0 |
| ; CHECK: deopt6: |
| ; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 456, i64 789) ] |
| ; CHECK-NEXT: ret void |
| ; CHECK: guarded5: |
| ; CHECK-NEXT: store i32 3, i32* [[P]] |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| store i32 0, i32* %p |
| call void(i1, ...) @llvm.experimental.guard(i1 %cond1) [ "deopt"(i32 123, i64 456) ] |
| store i32 1, i32* %p |
| call void(i1, ...) @llvm.experimental.guard(i1 %cond2) [ "deopt"(i32 789, i64 123) ] |
| store i32 2, i32* %p |
| call void(i1, ...) @llvm.experimental.guard(i1 %cond3) [ "deopt"(i32 456, i64 789) ] |
| store i32 3, i32* %p |
| ret void |
| } |
| |
| ; Check that the guard can split a loop properly. |
| define void @split_loop(i1 %cond, i32 %N, i32 %M) { |
| ; CHECK-LABEL: @split_loop( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[GUARDED:%.*]] ] |
| ; CHECK-NEXT: [[GUARD_COND:%.*]] = icmp slt i32 [[IV]], [[N:%.*]] |
| ; CHECK-NEXT: [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition() |
| ; CHECK-NEXT: [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[GUARD_COND]], [[WIDENABLE_COND]] |
| ; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK: deopt: |
| ; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 123, i64 456) ] |
| ; CHECK-NEXT: ret void |
| ; CHECK: guarded: |
| ; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp slt i32 [[IV]], [[M:%.*]] |
| ; CHECK-NEXT: [[IV_NEXT]] = add i32 [[IV]], 1 |
| ; CHECK-NEXT: br i1 [[LOOP_COND]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ] |
| %guard_cond = icmp slt i32 %iv, %N |
| call void(i1, ...) @llvm.experimental.guard(i1 %guard_cond) [ "deopt"(i32 123, i64 456) ] |
| %loop_cond = icmp slt i32 %iv, %M |
| %iv.next = add i32 %iv, 1 |
| br i1 %loop_cond, label %loop, label %exit |
| |
| exit: |
| ret void |
| } |