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.
27 lines
1.2 KiB
C++
27 lines
1.2 KiB
C++
// RUN: %clang_cc1 -triple i686-pc-linux-gnu %s -emit-llvm -o - | FileCheck %s
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struct foo {
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template<typename T>
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__attribute__ ((regparm (3))) foo(T x) {}
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__attribute__ ((regparm (3))) foo();
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__attribute__ ((regparm (3))) ~foo();
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};
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foo::foo() {
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// CHECK-LABEL: define{{.*}} void @_ZN3fooC2Ev(%struct.foo* inreg noundef nonnull align 1 dereferenceable(1) %this)
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// CHECK-LABEL: define{{.*}} void @_ZN3fooC1Ev(%struct.foo* inreg noundef nonnull align 1 dereferenceable(1) %this)
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}
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foo::~foo() {
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// CHECK-LABEL: define{{.*}} void @_ZN3fooD2Ev(%struct.foo* inreg noundef nonnull align 1 dereferenceable(1) %this)
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// CHECK-LABEL: define{{.*}} void @_ZN3fooD1Ev(%struct.foo* inreg noundef nonnull align 1 dereferenceable(1) %this)
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}
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void dummy() {
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// FIXME: how can we explicitly instantiate a template constructor? Gcc and
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// older clangs accept:
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// template foo::foo(int x);
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foo x(10);
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// CHECK-LABEL: define linkonce_odr void @_ZN3fooC1IiEET_(%struct.foo* inreg noundef nonnull align 1 dereferenceable(1) %this, i32 inreg noundef %x)
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// CHECK-LABEL: define linkonce_odr void @_ZN3fooC2IiEET_(%struct.foo* inreg noundef nonnull align 1 dereferenceable(1) %this, i32 inreg noundef %x)
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}
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