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9005f41837
The Win64 ABI docs on MSDN say that arguments bigger than 8 bytes are passed by reference. Prior to this change, we were only applying this logic to RecordType arguments. This affects both the Itanium and Microsoft C++ ABIs. Reviewers: majnemer Differential Revision: http://reviews.llvm.org/D3587 llvm-svn: 207817
29 lines
769 B
C++
29 lines
769 B
C++
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -O3 -o - | FileCheck %s
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// RUN: %clang_cc1 %s -triple=x86_64-windows-gnu -emit-llvm -o - | FileCheck %s -check-prefix MINGW64
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struct A {
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virtual int vf1() { return 1; }
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virtual int vf2() { return 2; }
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};
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int f(A* a, int (A::*fp)()) {
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return (a->*fp)();
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}
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// CHECK-LABEL: define i32 @_Z2g1v()
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// CHECK: ret i32 1
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// MINGW64-LABEL: define i32 @_Z2g1v()
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// MINGW64: call i32 @_Z1fP1AMS_FivE(%struct.A* %{{.*}}, { i64, i64 }* %{{.*}})
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int g1() {
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A a;
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return f(&a, &A::vf1);
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}
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// CHECK-LABEL: define i32 @_Z2g2v()
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// CHECK: ret i32 2
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// MINGW64-LABEL: define i32 @_Z2g2v()
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// MINGW64: call i32 @_Z1fP1AMS_FivE(%struct.A* %{{.*}}, { i64, i64 }* %{{.*}})
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int g2() {
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A a;
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return f(&a, &A::vf2);
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}
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