a0ffdf2850
We had an errorNYI diagnostic to trigger when we generated an alias for a ctor or dtor that had an existing declaration. Because functions are used via flat symbol references, all that is needed is to erase the old declaration. This change does that.
44 lines
1.6 KiB
C++
44 lines
1.6 KiB
C++
// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -mconstructor-aliases -fclangir -emit-cir %s -o %t.cir
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// RUN: FileCheck --input-file=%t.cir %s
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// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -mconstructor-aliases -emit-llvm %s -o %t.ll
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// RUN: FileCheck --check-prefix=OGCG --input-file=%t.ll %s
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// Test that constructor aliases work correctly when the call site is emitted
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// before the constructor definition. This creates a declaration for the
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// complete constructor first, which is then replaced by the alias.
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struct B {
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B();
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};
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void bar() {
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B b;
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}
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B::B() {
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}
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// CHECK: cir.func{{.*}} @_Z3barv()
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// CHECK: %[[B:.*]] = cir.alloca !rec_B, !cir.ptr<!rec_B>, ["b", init]
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// CHECK: cir.call @_ZN1BC1Ev(%[[B]]) : (!cir.ptr<!rec_B> {{.*}}) -> ()
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// CHECK: cir.return
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// CHECK: cir.func{{.*}} @_ZN1BC2Ev(%arg0: !cir.ptr<!rec_B>
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// CHECK: %[[THIS_ADDR:.*]] = cir.alloca !cir.ptr<!rec_B>, !cir.ptr<!cir.ptr<!rec_B>>, ["this", init]
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// CHECK: cir.store %arg0, %[[THIS_ADDR]]
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// CHECK: %[[THIS:.*]] = cir.load %[[THIS_ADDR]] : !cir.ptr<!cir.ptr<!rec_B>>, !cir.ptr<!rec_B>
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// CHECK: cir.func{{.*}} private dso_local @_ZN1BC1Ev(!cir.ptr<!rec_B>) alias(@_ZN1BC2Ev)
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// OGCG: @_ZN1BC1Ev = unnamed_addr alias void (ptr), ptr @_ZN1BC2Ev
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// OGCG: define{{.*}} void @_Z3barv()
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// OGCG: %[[B:.*]] = alloca %struct.B, align 1
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// OGCG: call void @_ZN1BC1Ev(ptr{{.*}} %[[B]])
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// OGCG: ret void
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// OGCG: define{{.*}} @_ZN1BC2Ev(ptr{{.*}} %[[THIS_ARG:.*]])
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// OGCG: %[[THIS_ADDR:.*]] = alloca ptr
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// OGCG: store ptr %[[THIS_ARG]], ptr %[[THIS_ADDR]]
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// OGCG: %[[THIS:.*]] = load ptr, ptr %[[THIS_ADDR]]
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