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| author | David Majnemer <david.majnemer@gmail.com> | 2014-09-11 23:05:02 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2014-09-11 23:05:02 +0000 |
| commit | 196ac334f32f81d9fe040d51de4117c86c7087bf (patch) | |
| tree | 1ed72f0ee4a978653049c6ecf2be7dc0b266250d /clang/test/CodeGenCXX/pr20897.cpp | |
| parent | 42fa4af8fe4e672d0b8bd4a5ebeec9b45730a0ff (diff) | |
| download | bcm5719-llvm-196ac334f32f81d9fe040d51de4117c86c7087bf.tar.gz bcm5719-llvm-196ac334f32f81d9fe040d51de4117c86c7087bf.zip | |
MS ABI: Use the correct this arg when generating implict copy ctor
We assumed that the incoming this argument would be the last argument.
However, this is not true under the MS ABI.
This fixes PR20897.
llvm-svn: 217642
Diffstat (limited to 'clang/test/CodeGenCXX/pr20897.cpp')
| -rw-r--r-- | clang/test/CodeGenCXX/pr20897.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/pr20897.cpp b/clang/test/CodeGenCXX/pr20897.cpp new file mode 100644 index 00000000000..06828c0ec07 --- /dev/null +++ b/clang/test/CodeGenCXX/pr20897.cpp @@ -0,0 +1,17 @@ +// RUN: %clang_cc1 -triple i686-windows-msvc -emit-llvm -std=c++1y -O0 -o - %s | FileCheck %s +struct Base {}; + +// __declspec(dllexport) causes us to export the implicit constructor. +struct __declspec(dllexport) Derived : virtual Base { +// CHECK-LABEL: define weak_odr dllexport x86_thiscallcc %struct.Derived* @"\01??0Derived@@QAE@ABU0@@Z" +// CHECK: %[[this:.*]] = load %struct.Derived** {{.*}} +// CHECK-NEXT: store %struct.Derived* %[[this]], %struct.Derived** %[[retval:.*]] +// CHECK: %[[dest_a_gep:.*]] = getelementptr inbounds %struct.Derived* %[[this]], i32 0, i32 1 +// CHECK-NEXT: %[[src_load:.*]] = load %struct.Derived** {{.*}} +// CHECK-NEXT: %[[src_a_gep:.*]] = getelementptr inbounds %struct.Derived* %[[src_load:.*]], i32 0, i32 1 +// CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %[[dest_a_gep]], i8* %[[src_a_gep]], i64 1, i32 4, i1 false) +// CHECK-NEXT: %[[dest_this:.*]] = load %struct.Derived** %[[retval]] +// CHECK-NEXT: ret %struct.Derived* %[[dest_this]] + bool a : 1; + bool b : 1; +}; |
