| 1 | // RUN: %clang_cc1 -triple=x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s |
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| 2 | // rdar://11861085 |
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| 3 | |
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| 4 | struct s { |
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| 5 | char filler [128]; |
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| 6 | volatile int x; |
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| 7 | }; |
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| 8 | |
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| 9 | struct s gs; |
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| 10 | |
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| 11 | void foo (void) { |
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| 12 | struct s ls; |
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| 13 | ls = ls; |
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| 14 | gs = gs; |
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| 15 | ls = gs; |
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| 16 | } |
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| 17 | // CHECK-LABEL: define void @foo() |
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| 18 | // CHECK: %[[LS:.*]] = alloca %struct.s, align 4 |
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| 19 | // CHECK-NEXT: %[[ZERO:.*]] = bitcast %struct.s* %[[LS]] to i8* |
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| 20 | // CHECK-NEXT: %[[ONE:.*]] = bitcast %struct.s* %[[LS]] to i8* |
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| 21 | // CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* align 4 %[[ZERO]], i8* align 4 %[[ONE]], i64 132, i1 true) |
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| 22 | // CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* align 4 getelementptr inbounds (%struct.s, %struct.s* @gs, i32 0, i32 0, i32 0), i8* align 4 getelementptr inbounds (%struct.s, %struct.s* @gs, i32 0, i32 0, i32 0), i64 132, i1 true) |
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| 23 | // CHECK-NEXT: %[[TWO:.*]] = bitcast %struct.s* %[[LS]] to i8* |
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| 24 | // CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* align 4 %[[TWO]], i8* align 4 getelementptr inbounds (%struct.s, %struct.s* @gs, i32 0, i32 0, i32 0), i64 132, i1 true) |
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| 25 | |
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| 26 | |
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| 27 | struct s1 { |
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| 28 | struct s y; |
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| 29 | }; |
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| 30 | |
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| 31 | struct s1 s; |
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| 32 | |
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| 33 | void fee (void) { |
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| 34 | s = s; |
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| 35 | s.y = gs; |
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| 36 | } |
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| 37 | // CHECK-LABEL: define void @fee() |
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| 38 | // CHECK: call void @llvm.memcpy.{{.*}}(i8* align 4 getelementptr inbounds (%struct.s1, %struct.s1* @s, i32 0, i32 0, i32 0, i32 0), i8* align 4 getelementptr inbounds (%struct.s1, %struct.s1* @s, i32 0, i32 0, i32 0, i32 0), i64 132, i1 true) |
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| 39 | // CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* align 4 getelementptr inbounds (%struct.s1, %struct.s1* @s, i32 0, i32 0, i32 0, i32 0), i8* align 4 getelementptr inbounds (%struct.s, %struct.s* @gs, i32 0, i32 0, i32 0), i64 132, i1 true) |
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| 40 | |
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| 41 | |
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