35 lines
1.3 KiB
C++
35 lines
1.3 KiB
C++
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// RUN: %clang_cc1 -triple=i686-pc-win32 -fms-extensions %s -emit-llvm -o- | FileCheck %s
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union A {
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int *&ref;
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int **ptr;
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};
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int *f1(A *a) {
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return a->ref;
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}
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// CHECK-LABEL: define {{.*}}i32* @"?f1@@YAPAHPATA@@@Z"(%union.A* %a)
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// CHECK: [[REF:%[^[:space:]]+]] = bitcast %union.A* %{{.*}} to i32***
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// CHECK: [[IPP:%[^[:space:]]+]] = load i32**, i32*** [[REF]]
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// CHECK: [[IP:%[^[:space:]]+]] = load i32*, i32** [[IPP]]
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// CHECK: ret i32* [[IP]]
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void f2(A *a) {
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*a->ref = 1;
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}
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// CHECK-LABEL: define {{.*}}void @"?f2@@YAXPATA@@@Z"(%union.A* %a)
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// CHECK: [[REF:%[^[:space:]]+]] = bitcast %union.A* %{{.*}} to i32***
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// CHECK: [[IPP:%[^[:space:]]+]] = load i32**, i32*** [[REF]]
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// CHECK: [[IP:%[^[:space:]]+]] = load i32*, i32** [[IPP]]
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// CHECK: store i32 1, i32* [[IP]]
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bool f3(A *a, int *b) {
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return a->ref != b;
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}
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// CHECK-LABEL: define {{.*}}i1 @"?f3@@YA_NPATA@@PAH@Z"(%union.A* %a, i32* %b)
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// CHECK: [[REF:%[^[:space:]]+]] = bitcast %union.A* %{{.*}} to i32***
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// CHECK: [[IPP:%[^[:space:]]+]] = load i32**, i32*** [[REF]]
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// CHECK: [[IP:%[^[:space:]]+]] = load i32*, i32** [[IPP]]
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// CHECK: [[IP2:%[^[:space:]]+]] = load i32*, i32** %b.addr
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// CHECK: icmp ne i32* [[IP]], [[IP2]]
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