| // RUN: %clang_cc1 %s -emit-llvm -o - -fblocks -triple x86_64-apple-darwin10 | FileCheck %s |
| |
| // CHECK: [[AGG:%.*]] = type { i32 } |
| typedef struct { int v; } Agg; |
| Agg makeAgg(void); |
| |
| // When assigning into a __block variable, ensure that we compute that |
| // address *after* evaluating the RHS when the RHS has the capacity to |
| // cause a block copy. rdar://9309454 |
| void test0() { |
| __block Agg a = {100}; |
| |
| a = makeAgg(); |
| } |
| // CHECK-LABEL: define void @test0() |
| // CHECK: [[A:%.*]] = alloca [[BYREF:%.*]], align 8 |
| // CHECK-NEXT: [[TEMP:%.*]] = alloca [[AGG]], align 4 |
| // CHECK: [[RESULT:%.*]] = call i32 @makeAgg() |
| // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[TEMP]], i32 0, i32 0 |
| // CHECK-NEXT: store i32 [[RESULT]], i32* [[T0]] |
| // Check that we properly assign into the forwarding pointer. |
| // CHECK-NEXT: [[A_FORWARDING:%.*]] = getelementptr inbounds [[BYREF]], [[BYREF]]* [[A]], i32 0, i32 1 |
| // CHECK-NEXT: [[T0:%.*]] = load [[BYREF]]*, [[BYREF]]** [[A_FORWARDING]] |
| // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[BYREF]], [[BYREF]]* [[T0]], i32 0, i32 4 |
| // CHECK-NEXT: [[T2:%.*]] = bitcast [[AGG]]* [[T1]] to i8* |
| // CHECK-NEXT: [[T3:%.*]] = bitcast [[AGG]]* [[TEMP]] to i8* |
| // CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[T2]], i8* [[T3]], i64 4, i32 4, i1 false) |
| // Verify that there's nothing else significant in the function. |
| // CHECK-NEXT: [[T0:%.*]] = bitcast [[BYREF]]* [[A]] to i8* |
| // CHECK-NEXT: call void @_Block_object_dispose(i8* [[T0]], i32 8) |
| // CHECK-NEXT: ret void |
| |
| // When chaining assignments into __block variables, make sure we |
| // propagate the actual value into the outer variable. |
| // rdar://11757470 |
| void test1() { |
| __block Agg a, b; |
| a = b = makeAgg(); |
| } |
| // CHECK-LABEL: define void @test1() |
| // CHECK: [[A:%.*]] = alloca [[A_BYREF:%.*]], align 8 |
| // CHECK-NEXT: [[B:%.*]] = alloca [[B_BYREF:%.*]], align 8 |
| // CHECK-NEXT: [[TEMP:%.*]] = alloca [[AGG]], align 4 |
| // CHECK: [[RESULT:%.*]] = call i32 @makeAgg() |
| // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[AGG]], [[AGG]]* [[TEMP]], i32 0, i32 0 |
| // CHECK-NEXT: store i32 [[RESULT]], i32* [[T0]] |
| // Check that we properly assign into the forwarding pointer, first for b: |
| // CHECK-NEXT: [[B_FORWARDING:%.*]] = getelementptr inbounds [[B_BYREF]], [[B_BYREF]]* [[B]], i32 0, i32 1 |
| // CHECK-NEXT: [[T0:%.*]] = load [[B_BYREF]]*, [[B_BYREF]]** [[B_FORWARDING]] |
| // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[B_BYREF]], [[B_BYREF]]* [[T0]], i32 0, i32 4 |
| // CHECK-NEXT: [[T2:%.*]] = bitcast [[AGG]]* [[T1]] to i8* |
| // CHECK-NEXT: [[T3:%.*]] = bitcast [[AGG]]* [[TEMP]] to i8* |
| // CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[T2]], i8* [[T3]], i64 4, i32 4, i1 false) |
| // Then for 'a': |
| // CHECK-NEXT: [[A_FORWARDING:%.*]] = getelementptr inbounds [[A_BYREF]], [[A_BYREF]]* [[A]], i32 0, i32 1 |
| // CHECK-NEXT: [[T0:%.*]] = load [[A_BYREF]]*, [[A_BYREF]]** [[A_FORWARDING]] |
| // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[A_BYREF]], [[A_BYREF]]* [[T0]], i32 0, i32 4 |
| // CHECK-NEXT: [[T2:%.*]] = bitcast [[AGG]]* [[T1]] to i8* |
| // CHECK-NEXT: [[T3:%.*]] = bitcast [[AGG]]* [[TEMP]] to i8* |
| // CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[T2]], i8* [[T3]], i64 4, i32 4, i1 false) |
| // Verify that there's nothing else significant in the function. |
| // CHECK-NEXT: [[T0:%.*]] = bitcast [[B_BYREF]]* [[B]] to i8* |
| // CHECK-NEXT: call void @_Block_object_dispose(i8* [[T0]], i32 8) |
| // CHECK-NEXT: [[T0:%.*]] = bitcast [[A_BYREF]]* [[A]] to i8* |
| // CHECK-NEXT: call void @_Block_object_dispose(i8* [[T0]], i32 8) |
| // CHECK-NEXT: ret void |