16d0381841
The original change was reverted because it was discovered that clang mishandles thunks, and they receive wrong attributes for their this/return types - the ones for the function they will call, not the ones they have. While i have tried to fix this in https://reviews.llvm.org/D100388 that patch has been up and stuck for a month now, with little signs of progress. So while it will be good to solve this for real, for now we can simply avoid introducing the bug, by not annotating this/return for thunks. This reverts commit6270b3a1ea, relanding0aa0458f14.
21 lines
894 B
C++
21 lines
894 B
C++
// RUN: %clang_cc1 -S -emit-llvm -o - -triple=x86_64-linux-gnu %s | FileCheck %s -check-prefix=CHECK-YES
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// RUN: %clang_cc1 -S -emit-llvm -o - -fno-delete-null-pointer-checks -triple=x86_64-linux-gnu %s | FileCheck %s -check-prefix=CHECK-NO
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struct Struct {
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int many;
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int member;
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int fields;
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void ReturnsVoid();
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};
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void TestReturnsVoid(Struct &s) {
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s.ReturnsVoid();
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// CHECK-YES: call void @_ZN6Struct11ReturnsVoidEv(%struct.Struct* nonnull align 4 dereferenceable(12) %0)
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/// FIXME Use dereferenceable after dereferenceable respects NullPointerIsValid.
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// CHECK-NO: call void @_ZN6Struct11ReturnsVoidEv(%struct.Struct* align 4 dereferenceable_or_null(12) %0)
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}
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// CHECK-YES: declare void @_ZN6Struct11ReturnsVoidEv(%struct.Struct* nonnull align 4 dereferenceable(12))
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// CHECK-NO: declare void @_ZN6Struct11ReturnsVoidEv(%struct.Struct* align 4 dereferenceable_or_null(12))
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