67aa314bce
When adding new attributes, existing attributes are dropped. While this appears to be a longstanding issue, this was highlighted by D105169 which dropped a lot of attributes due to adding the new noundef attribute. Ahmed Bougacha (@ab) tracked down the issue and provided the fix in CGCall.cpp. I bundled it up and updated the tests.
21 lines
926 B
C++
21 lines
926 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* noundef 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* noundef align 4 dereferenceable_or_null(12) %0)
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}
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// CHECK-YES: declare void @_ZN6Struct11ReturnsVoidEv(%struct.Struct* noundef nonnull align 4 dereferenceable(12))
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// CHECK-NO: declare void @_ZN6Struct11ReturnsVoidEv(%struct.Struct* noundef align 4 dereferenceable_or_null(12))
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