| ; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s |
| |
| ; This test is based on the following code: |
| ; |
| ; void test() |
| ; { |
| ; try { |
| ; Obj o; |
| ; may_throw(); |
| ; } catch (...) { |
| ; } |
| ; } |
| ; |
| ; The purpose of this test is to verify that we create separate catch and |
| ; cleanup handlers. When compiling for the C++ 11 standard, this isn't |
| ; strictly necessary, since calling the destructor from the catch handler |
| ; would be logically equivalent to calling it from a cleanup handler. |
| ; However, if the -std=c++98 option is used, an exception in the cleanup |
| ; code should terminate the process (the MSVCRT runtime will do that) but |
| ; if the destructor is called from the catch handler, it wouldn't terminate |
| ; the process |
| |
| |
| ; ModuleID = 'cppeh-mixed-catch-and-cleanup.cpp' |
| target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-pc-windows-msvc" |
| |
| %class.Obj = type { i8 } |
| |
| ; This just verifies that the function was processed by WinEHPrepare. |
| ; |
| ; CHECK-LABEL: define void @"\01?test@@YAXXZ"() |
| ; CHECK: entry: |
| ; CHECK: call void (...) @llvm.frameescape |
| ; CHECK: } |
| |
| ; Function Attrs: nounwind uwtable |
| define void @"\01?test@@YAXXZ"() #0 { |
| entry: |
| %o = alloca %class.Obj, align 1 |
| %exn.slot = alloca i8* |
| %ehselector.slot = alloca i32 |
| invoke void @"\01?may_throw@@YAXXZ"() |
| to label %invoke.cont unwind label %lpad |
| |
| invoke.cont: ; preds = %entry |
| call void @"\01??1Obj@@QEAA@XZ"(%class.Obj* %o) #3 |
| br label %try.cont |
| |
| lpad: ; preds = %entry |
| %0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) |
| catch i8* null |
| %1 = extractvalue { i8*, i32 } %0, 0 |
| store i8* %1, i8** %exn.slot |
| %2 = extractvalue { i8*, i32 } %0, 1 |
| store i32 %2, i32* %ehselector.slot |
| call void @"\01??1Obj@@QEAA@XZ"(%class.Obj* %o) #3 |
| %exn = load i8*, i8** %exn.slot |
| call void @llvm.eh.begincatch(i8* %exn, i8* null) #3 |
| call void @llvm.eh.endcatch() #3 |
| br label %try.cont |
| |
| try.cont: ; preds = %catch, %invoke.cont |
| ret void |
| } |
| |
| ; Verify that a cleanup handler was created and that it calls ~Obj(). |
| ; CHECK-LABEL: define internal void @"\01?test@@YAXXZ.cleanup"(i8*, i8*) |
| ; CHECK: entry: |
| ; CHECK: @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 0) |
| ; CHECK: call void @"\01??1Obj@@QEAA@XZ" |
| ; CHECK: ret void |
| ; CHECK: } |
| |
| ; Verify that a catch handler was created and that it does not call ~Obj(). |
| ; CHECK-LABEL: define internal i8* @"\01?test@@YAXXZ.catch"(i8*, i8*) |
| ; CHECK: entry: |
| ; CHECK-NOT: call void @"\01??1Obj@@QEAA@XZ" |
| ; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont) |
| ; CHECK: } |
| |
| |
| |
| declare void @"\01?may_throw@@YAXXZ"() #1 |
| |
| declare i32 @__CxxFrameHandler3(...) |
| |
| ; Function Attrs: nounwind |
| declare void @"\01??1Obj@@QEAA@XZ"(%class.Obj*) #2 |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #3 |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.eh.endcatch() #3 |
| |
| attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #2 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #3 = { nounwind } |
| |
| !llvm.module.flags = !{!0} |
| !llvm.ident = !{!1} |
| |
| !0 = !{i32 1, !"PIC Level", i32 2} |
| !1 = !{!"clang version 3.7.0 (trunk 235779) (llvm/trunk 235769)"} |