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35 lines
1.2 KiB
C++
35 lines
1.2 KiB
C++
// 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 {{.*}}ptr @"?f1@@YAPAHPATA@@@Z"(ptr noundef %a)
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// CHECK: [[A_ADDR:%[^[:space:]]+]] = load ptr, ptr %{{.*}}
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// CHECK: [[IPP:%[^[:space:]]+]] = load ptr, ptr [[A_ADDR]]
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// CHECK: [[IP:%[^[:space:]]+]] = load ptr, ptr [[IPP]]
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// CHECK: ret ptr [[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"(ptr noundef %a)
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// CHECK: [[A_ADDR:%[^[:space:]]+]] = load ptr, ptr %{{.*}}
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// CHECK: [[IPP:%[^[:space:]]+]] = load ptr, ptr [[A_ADDR]]
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// CHECK: [[IP:%[^[:space:]]+]] = load ptr, ptr [[IPP]]
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// CHECK: store i32 1, ptr [[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"(ptr noundef %a, ptr noundef %b)
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// CHECK: [[A_ADDR:%[^[:space:]]+]] = load ptr, ptr %{{.*}}
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// CHECK: [[IPP:%[^[:space:]]+]] = load ptr, ptr [[A_ADDR]]
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// CHECK: [[IP:%[^[:space:]]+]] = load ptr, ptr [[IPP]]
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// CHECK: [[IP2:%[^[:space:]]+]] = load ptr, ptr %b.addr
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// CHECK: icmp ne ptr [[IP]], [[IP2]]
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