Sayan Sivakumaran
947dc92d1a
Previously, arguments with `ABIArgInfo::Indirect` would not be given alignment information if it wasn't `byval`. This could prevent certain optimizations, such as those guarded by `isDereferenceableAndAlignedPointer` checks. The missing dereferenceability information is pointed out in https://github.com/llvm/llvm-project/issues/129337, for example. This PR will fix the first half of this problem, which is emitting alignment information. Dereferenceability information will be added in a subsequent PR.
30 lines
592 B
C++
30 lines
592 B
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
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struct Foo {
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Foo();
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Foo(const Foo&);
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};
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struct Bar {
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Bar();
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operator const Foo&() const;
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};
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void f(Foo);
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// CHECK-LABEL: define{{.*}} void @_Z1g3Foo(ptr noundef align 1 dead_on_return %foo)
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void g(Foo foo) {
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// CHECK: call void @_ZN3BarC1Ev
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// CHECK: @_ZNK3BarcvRK3FooEv
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// CHECK: call void @_Z1f3Foo
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f(Bar());
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// CHECK: call void @_ZN3FooC1Ev
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// CHECK: call void @_Z1f3Foo
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f(Foo());
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// CHECK: call void @_ZN3FooC1ERKS_
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// CHECK: call void @_Z1f3Foo
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f(foo);
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// CHECK: ret
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}
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