| // 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. |
| void test0(void) { |
| __block Agg a = {100}; |
| ^{ (void)a; }; |
| |
| a = makeAgg(); |
| } |
| // CHECK-LABEL: define{{.*}} void @test0() |
| // CHECK: [[A:%.*]] = alloca [[BYREF:%.*]], align 8 |
| // CHECK-NEXT: alloca <{ ptr, i32, i32, ptr, ptr, ptr }>, align 8 |
| // CHECK-NEXT: [[TEMP:%.*]] = alloca [[AGG]], align 4 |
| // CHECK: [[RESULT:%.*]] = call i32 @makeAgg() |
| // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[AGG]], ptr [[TEMP]], i32 0, i32 0 |
| // CHECK-NEXT: store i32 [[RESULT]], ptr [[T0]] |
| // Check that we properly assign into the forwarding pointer. |
| // CHECK-NEXT: [[A_FORWARDING:%.*]] = getelementptr inbounds [[BYREF]], ptr [[A]], i32 0, i32 1 |
| // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[A_FORWARDING]] |
| // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[BYREF]], ptr [[T0]], i32 0, i32 4 |
| // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[T1]], ptr align 4 [[TEMP]], i64 4, i1 false) |
| // Verify that there's nothing else significant in the function. |
| // CHECK-NEXT: call void @_Block_object_dispose(ptr [[A]], i32 8) |
| // CHECK-NEXT: ret void |
| |
| // When chaining assignments into __block variables, make sure we |
| // propagate the actual value into the outer variable. |
| void test1(void) { |
| __block Agg a, b; |
| ^{ (void)a; (void)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: alloca <{ ptr, i32, i32, ptr, ptr, ptr, ptr }>, align 8 |
| // CHECK-NEXT: [[TEMP:%.*]] = alloca [[AGG]], align 4 |
| // CHECK: [[RESULT:%.*]] = call i32 @makeAgg() |
| // CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[AGG]], ptr [[TEMP]], i32 0, i32 0 |
| // CHECK-NEXT: store i32 [[RESULT]], ptr [[T0]] |
| // Check that we properly assign into the forwarding pointer, first for b: |
| // CHECK-NEXT: [[B_FORWARDING:%.*]] = getelementptr inbounds [[B_BYREF]], ptr [[B]], i32 0, i32 1 |
| // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[B_FORWARDING]] |
| // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[B_BYREF]], ptr [[T0]], i32 0, i32 4 |
| // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[T1]], ptr align 4 [[TEMP]], i64 4, i1 false) |
| // Then for 'a': |
| // CHECK-NEXT: [[A_FORWARDING:%.*]] = getelementptr inbounds [[A_BYREF]], ptr [[A]], i32 0, i32 1 |
| // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[A_FORWARDING]] |
| // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[A_BYREF]], ptr [[T0]], i32 0, i32 4 |
| // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[T1]], ptr align 4 [[TEMP]], i64 4, i1 false) |
| // Verify that there's nothing else significant in the function. |
| // CHECK-NEXT: call void @_Block_object_dispose(ptr [[B]], i32 8) |
| // CHECK-NEXT: call void @_Block_object_dispose(ptr [[A]], i32 8) |
| // CHECK-NEXT: ret void |
