1 // RUN: %clang_cc1 -triple=x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s 2 // rdar://11861085 3 4 struct s { 5 char filler [128]; 6 volatile int x; 7 }; 8 9 struct s gs; 10 11 void foo (void) { 12 struct s ls; 13 ls = ls; 14 gs = gs; 15 ls = gs; 16 } 17 // CHECK-LABEL: define void @_Z3foov() 18 // CHECK: %[[LS:.*]] = alloca %struct.s, align 4 19 // CHECK-NEXT: %[[ZERO:.*]] = bitcast %struct.s* %[[LS]] to i8* 20 // CHECK-NEXT: %[[ONE:.*]] = bitcast %struct.s* %[[LS]] to i8* 21 // CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* %[[ZERO]], i8* %[[ONE]], i64 132, i32 4, i1 true) 22 // CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* getelementptr inbounds (%struct.s, %struct.s* @gs, i32 0, i32 0, i32 0), i8* getelementptr inbounds (%struct.s, %struct.s* @gs, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true) 23 // CHECK-NEXT: %[[TWO:.*]] = bitcast %struct.s* %[[LS]] to i8* 24 // CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* %[[TWO]], i8* getelementptr inbounds (%struct.s, %struct.s* @gs, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true) 25 26 27 struct s1 { 28 struct s y; 29 }; 30 31 struct s1 s; 32 33 void fee (void) { 34 s = s; 35 s.y = gs; 36 } 37 // CHECK-LABEL: define void @_Z3feev() 38 // CHECK: call void @llvm.memcpy.{{.*}}(i8* getelementptr inbounds (%struct.s1, %struct.s1* @s, i32 0, i32 0, i32 0, i32 0), i8* getelementptr inbounds (%struct.s1, %struct.s1* @s, i32 0, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true) 39 // CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* getelementptr inbounds (%struct.s1, %struct.s1* @s, i32 0, i32 0, i32 0, i32 0), i8* getelementptr inbounds (%struct.s, %struct.s* @gs, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true) 40 41 struct d : s1 { 42 }; 43 44 d gd; 45 46 void gorf(void) { 47 gd = gd; 48 } 49 // CHECK-LABEL: define void @_Z4gorfv() 50 // CHECK: call void @llvm.memcpy.{{.*}}(i8* getelementptr inbounds (%struct.d, %struct.d* @gd, i32 0, i32 0, i32 0, i32 0, i32 0), i8* getelementptr inbounds (%struct.d, %struct.d* @gd, i32 0, i32 0, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true) 51
