50 lines
1.8 KiB
C++
50 lines
1.8 KiB
C++
// RUN: %clang_cc1 -triple=x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s
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// rdar://11861085
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struct s {
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char filler [128];
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volatile int x;
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};
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struct s gs;
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void foo (void) {
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struct s ls;
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ls = ls;
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gs = gs;
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ls = gs;
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}
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// CHECK-LABEL: define void @_Z3foov()
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// CHECK: %[[LS:.*]] = alloca %struct.s, align 4
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// CHECK-NEXT: %[[ZERO:.*]] = bitcast %struct.s* %[[LS]] to i8*
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// CHECK-NEXT: %[[ONE:.*]] = bitcast %struct.s* %[[LS]] to i8*
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// CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* %[[ZERO]], i8* %[[ONE]], i64 132, i32 4, i1 true)
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// CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* getelementptr inbounds (%struct.s* @gs, i32 0, i32 0, i32 0), i8* getelementptr inbounds (%struct.s* @gs, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true)
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// CHECK-NEXT: %[[TWO:.*]] = bitcast %struct.s* %[[LS]] to i8*
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// CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* %[[TWO]], i8* getelementptr inbounds (%struct.s* @gs, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true)
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struct s1 {
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struct s y;
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};
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struct s1 s;
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void fee (void) {
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s = s;
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s.y = gs;
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}
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// CHECK-LABEL: define void @_Z3feev()
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// CHECK: call void @llvm.memcpy.{{.*}}(i8* getelementptr inbounds (%struct.s1* @s, i32 0, i32 0, i32 0, i32 0), i8* getelementptr inbounds (%struct.s1* @s, i32 0, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true)
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// CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* getelementptr inbounds (%struct.s1* @s, i32 0, i32 0, i32 0, i32 0), i8* getelementptr inbounds (%struct.s* @gs, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true)
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struct d : s1 {
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};
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d gd;
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void gorf(void) {
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gd = gd;
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}
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// CHECK-LABEL: define void @_Z4gorfv()
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// CHECK: call void @llvm.memcpy.{{.*}}(i8* getelementptr inbounds (%struct.d* @gd, i32 0, i32 0, i32 0, i32 0, i32 0), i8* getelementptr inbounds (%struct.d* @gd, i32 0, i32 0, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true)
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