| ; RUN: opt -lint -disable-output < %s 2>&1 | FileCheck %s |
| |
| ; This test is meant to prove that the Verifier is able to identify a variety |
| ; of errors with the llvm.eh.begincatch and llvm.eh.endcatch intrinsics. |
| ; See cppeh-catch-intrinsics-clean for correct uses. |
| |
| target triple = "x86_64-pc-windows-msvc" |
| |
| declare void @llvm.eh.begincatch(i8*, i8*) |
| |
| declare void @llvm.eh.endcatch() |
| |
| @_ZTIi = external constant i8* |
| |
| ; Function Attrs: uwtable |
| define void @test_missing_endcatch() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) { |
| ; CHECK: Some paths from llvm.eh.begincatch may not reach llvm.eh.endcatch |
| ; CHECK-NEXT: call void @llvm.eh.begincatch(i8* %exn, i8* null) |
| entry: |
| invoke void @_Z9may_throwv() |
| to label %try.cont unwind label %lpad |
| |
| lpad: ; preds = %entry |
| %0 = landingpad { i8*, i32 } |
| catch i8* bitcast (i8** @_ZTIi to i8*) |
| %exn = extractvalue { i8*, i32 } %0, 0 |
| %sel = extractvalue { i8*, i32 } %0, 1 |
| %1 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) |
| %matches = icmp eq i32 %sel, %1 |
| br i1 %matches, label %catch, label %eh.resume |
| |
| catch: ; preds = %lpad |
| call void @llvm.eh.begincatch(i8* %exn, i8* null) |
| call void @_Z10handle_intv() |
| br label %invoke.cont2 |
| |
| invoke.cont2: ; preds = %catch |
| br label %try.cont |
| |
| try.cont: ; preds = %invoke.cont2, %entry |
| ret void |
| |
| eh.resume: ; preds = %catch.dispatch |
| resume { i8*, i32 } %0 |
| } |
| |
| ; Function Attrs: uwtable |
| define void @test_missing_begincatch() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) { |
| ; CHECK: llvm.eh.endcatch may be reachable without passing llvm.eh.begincatch |
| ; CHECK-NEXT: call void @llvm.eh.endcatch() |
| entry: |
| invoke void @_Z9may_throwv() |
| to label %try.cont unwind label %lpad |
| |
| lpad: ; preds = %entry |
| %0 = landingpad { i8*, i32 } |
| catch i8* bitcast (i8** @_ZTIi to i8*) |
| %exn = extractvalue { i8*, i32 } %0, 0 |
| %sel = extractvalue { i8*, i32 } %0, 1 |
| %1 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) |
| %matches = icmp eq i32 %sel, %1 |
| br i1 %matches, label %catch, label %eh.resume |
| |
| catch: ; preds = %lpad |
| call void @_Z10handle_intv() |
| br label %invoke.cont2 |
| |
| invoke.cont2: ; preds = %catch |
| call void @llvm.eh.endcatch() |
| br label %try.cont |
| |
| try.cont: ; preds = %invoke.cont2, %entry |
| ret void |
| |
| eh.resume: ; preds = %catch.dispatch |
| resume { i8*, i32 } %0 |
| } |
| |
| ; Function Attrs: uwtable |
| define void @test_multiple_begin() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) { |
| ; CHECK: llvm.eh.begincatch may be called a second time before llvm.eh.endcatch |
| ; CHECK-NEXT: call void @llvm.eh.begincatch(i8* %exn, i8* null) |
| ; CHECK-NEXT: call void @llvm.eh.begincatch(i8* %exn, i8* null) |
| entry: |
| invoke void @_Z9may_throwv() |
| to label %try.cont unwind label %lpad |
| |
| lpad: ; preds = %entry |
| %0 = landingpad { i8*, i32 } |
| catch i8* bitcast (i8** @_ZTIi to i8*) |
| %exn = extractvalue { i8*, i32 } %0, 0 |
| %sel = extractvalue { i8*, i32 } %0, 1 |
| %1 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) |
| %matches = icmp eq i32 %sel, %1 |
| br i1 %matches, label %catch, label %eh.resume |
| |
| catch: ; preds = %lpad |
| call void @llvm.eh.begincatch(i8* %exn, i8* null) |
| call void @_Z10handle_intv() |
| br label %invoke.cont2 |
| |
| invoke.cont2: ; preds = %catch |
| call void @llvm.eh.begincatch(i8* %exn, i8* null) |
| call void @llvm.eh.endcatch() |
| br label %try.cont |
| |
| try.cont: ; preds = %invoke.cont2, %entry |
| ret void |
| |
| eh.resume: ; preds = %catch.dispatch |
| resume { i8*, i32 } %0 |
| } |
| |
| ; Function Attrs: uwtable |
| define void @test_multiple_end() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) { |
| ; CHECK: llvm.eh.endcatch may be called a second time after llvm.eh.begincatch |
| ; CHECK-NEXT: call void @llvm.eh.endcatch() |
| ; CHECK-NEXT: call void @llvm.eh.endcatch() |
| entry: |
| invoke void @_Z9may_throwv() |
| to label %try.cont unwind label %lpad |
| |
| lpad: ; preds = %entry |
| %0 = landingpad { i8*, i32 } |
| catch i8* bitcast (i8** @_ZTIi to i8*) |
| %exn = extractvalue { i8*, i32 } %0, 0 |
| %sel = extractvalue { i8*, i32 } %0, 1 |
| %1 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) |
| %matches = icmp eq i32 %sel, %1 |
| br i1 %matches, label %catch, label %eh.resume |
| |
| catch: ; preds = %lpad |
| call void @llvm.eh.begincatch(i8* %exn, i8* null) |
| call void @_Z10handle_intv() |
| call void @llvm.eh.endcatch() |
| br label %invoke.cont2 |
| |
| invoke.cont2: ; preds = %catch |
| call void @llvm.eh.endcatch() |
| br label %try.cont |
| |
| try.cont: ; preds = %invoke.cont2, %entry |
| ret void |
| |
| eh.resume: ; preds = %catch.dispatch |
| resume { i8*, i32 } %0 |
| } |
| |
| |
| ; Function Attrs: uwtable |
| define void @test_begincatch_without_lpad() { |
| ; CHECK: llvm.eh.begincatch may be reachable without passing a landingpad |
| ; CHECK-NEXT: call void @llvm.eh.begincatch(i8* %exn, i8* null) |
| entry: |
| %exn = alloca i8 |
| call void @llvm.eh.begincatch(i8* %exn, i8* null) |
| call void @_Z10handle_intv() |
| br label %invoke.cont2 |
| |
| invoke.cont2: ; preds = %catch |
| call void @llvm.eh.endcatch() |
| br label %try.cont |
| |
| try.cont: ; preds = %invoke.cont2, %entry |
| ret void |
| } |
| |
| ; Function Attrs: uwtable |
| define void @test_branch_to_begincatch_with_no_lpad(i32 %fake.sel) personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) { |
| ; CHECK: llvm.eh.begincatch may be reachable without passing a landingpad |
| ; CHECK-NEXT: call void @llvm.eh.begincatch(i8* %exn2, i8* null) |
| entry: |
| %fake.exn = alloca i8 |
| invoke void @_Z9may_throwv() |
| to label %catch unwind label %lpad |
| |
| lpad: ; preds = %entry |
| %0 = landingpad { i8*, i32 } |
| catch i8* bitcast (i8** @_ZTIi to i8*) |
| %exn = extractvalue { i8*, i32 } %0, 0 |
| %sel = extractvalue { i8*, i32 } %0, 1 |
| %1 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) |
| %matches = icmp eq i32 %sel, %1 |
| br i1 %matches, label %catch, label %eh.resume |
| |
| invoke void @_Z9may_throwv() |
| to label %try.cont unwind label %lpad |
| |
| catch: ; preds = %lpad, %entry |
| %exn2 = phi i8* [%exn, %lpad], [%fake.exn, %entry] |
| %sel2 = phi i32 [%sel, %lpad], [%fake.sel, %entry] |
| call void @llvm.eh.begincatch(i8* %exn2, i8* null) |
| call void @_Z10handle_intv() |
| %matches1 = icmp eq i32 %sel2, 0 |
| br i1 %matches1, label %invoke.cont2, label %invoke.cont3 |
| |
| invoke.cont2: ; preds = %catch |
| call void @llvm.eh.endcatch() |
| br label %try.cont |
| |
| invoke.cont3: ; preds = %catch |
| call void @llvm.eh.endcatch() |
| br label %eh.resume |
| |
| try.cont: ; preds = %invoke.cont2 |
| ret void |
| |
| eh.resume: ; preds = %catch.dispatch |
| %lpad.val = insertvalue { i8*, i32 } undef, i32 0, 1 |
| resume { i8*, i32 } %lpad.val |
| } |
| |
| ; Function Attrs: uwtable |
| define void @test_branch_missing_endcatch() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) { |
| ; CHECK: Some paths from llvm.eh.begincatch may not reach llvm.eh.endcatch |
| ; CHECK-NEXT: call void @llvm.eh.begincatch(i8* %exn2, i8* null) |
| entry: |
| invoke void @_Z9may_throwv() |
| to label %invoke.cont unwind label %lpad |
| |
| invoke.cont: |
| invoke void @_Z9may_throwv() |
| to label %invoke.cont unwind label %lpad1 |
| |
| lpad: ; preds = %entry |
| %0 = landingpad { i8*, i32 } |
| catch i8* bitcast (i8** @_ZTIi to i8*) |
| %exn = extractvalue { i8*, i32 } %0, 0 |
| %sel = extractvalue { i8*, i32 } %0, 1 |
| %1 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) |
| %matches = icmp eq i32 %sel, %1 |
| br i1 %matches, label %catch, label %eh.resume |
| |
| invoke void @_Z9may_throwv() |
| to label %try.cont unwind label %lpad |
| |
| lpad1: ; preds = %entry |
| %l1.0 = landingpad { i8*, i32 } |
| cleanup |
| catch i8* bitcast (i8** @_ZTIi to i8*) |
| %exn1 = extractvalue { i8*, i32 } %l1.0, 0 |
| %sel1 = extractvalue { i8*, i32 } %l1.0, 1 |
| %l1.1 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) |
| %matchesl1 = icmp eq i32 %sel1, %l1.1 |
| br i1 %matchesl1, label %catch, label %eh.resume |
| |
| catch: ; preds = %lpad, %lpad1 |
| %exn2 = phi i8* [%exn, %lpad], [%exn1, %lpad1] |
| %sel2 = phi i32 [%sel, %lpad], [%sel1, %lpad1] |
| call void @llvm.eh.begincatch(i8* %exn2, i8* null) |
| call void @_Z10handle_intv() |
| %matches1 = icmp eq i32 %sel2, 0 |
| br i1 %matches1, label %invoke.cont2, label %invoke.cont3 |
| |
| invoke.cont2: ; preds = %catch |
| call void @llvm.eh.endcatch() |
| br label %try.cont |
| |
| invoke.cont3: ; preds = %catch |
| br label %eh.resume |
| |
| try.cont: ; preds = %invoke.cont2, %entry |
| ret void |
| |
| eh.resume: ; preds = %catch.dispatch |
| %lpad.val = insertvalue { i8*, i32 } undef, i32 0, 1 |
| resume { i8*, i32 } %lpad.val |
| } |
| |
| declare void @_Z9may_throwv() |
| |
| declare i32 @__CxxFrameHandler3(...) |
| |
| ; Function Attrs: nounwind readnone |
| declare i32 @llvm.eh.typeid.for(i8*) |
| |
| declare void @_Z10handle_intv() |
| |
