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TheRock/compiler/amd-llvm/clang/test/CIR/CodeGen/ctor-alias-prev-decl.cpp
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -mconstructor-aliases -fclangir -emit-cir %s -o %t.cir
// RUN: FileCheck --input-file=%t.cir %s
// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -mconstructor-aliases -emit-llvm %s -o %t.ll
// RUN: FileCheck --check-prefix=OGCG --input-file=%t.ll %s
// Test that constructor aliases work correctly when the call site is emitted
// before the constructor definition. This creates a declaration for the
// complete constructor first, which is then replaced by the alias.
struct B {
B();
};
void bar() {
B b;
}
B::B() {
}
// CHECK: cir.func{{.*}} @_Z3barv()
// CHECK: %[[B:.*]] = cir.alloca !rec_B, !cir.ptr<!rec_B>, ["b", init]
// CHECK: cir.call @_ZN1BC1Ev(%[[B]]) : (!cir.ptr<!rec_B> {{.*}}) -> ()
// CHECK: cir.return
// CHECK: cir.func{{.*}} @_ZN1BC2Ev(%arg0: !cir.ptr<!rec_B>
// CHECK: %[[THIS_ADDR:.*]] = cir.alloca !cir.ptr<!rec_B>, !cir.ptr<!cir.ptr<!rec_B>>, ["this", init]
// CHECK: cir.store %arg0, %[[THIS_ADDR]]
// CHECK: %[[THIS:.*]] = cir.load %[[THIS_ADDR]] : !cir.ptr<!cir.ptr<!rec_B>>, !cir.ptr<!rec_B>
// CHECK: cir.func{{.*}} private dso_local @_ZN1BC1Ev(!cir.ptr<!rec_B>) alias(@_ZN1BC2Ev)
// OGCG: @_ZN1BC1Ev = unnamed_addr alias void (ptr), ptr @_ZN1BC2Ev
// OGCG: define{{.*}} void @_Z3barv()
// OGCG: %[[B:.*]] = alloca %struct.B, align 1
// OGCG: call void @_ZN1BC1Ev(ptr{{.*}} %[[B]])
// OGCG: ret void
// OGCG: define{{.*}} @_ZN1BC2Ev(ptr{{.*}} %[[THIS_ARG:.*]])
// OGCG: %[[THIS_ADDR:.*]] = alloca ptr
// OGCG: store ptr %[[THIS_ARG]], ptr %[[THIS_ADDR]]
// OGCG: %[[THIS:.*]] = load ptr, ptr %[[THIS_ADDR]]