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