diff options
Diffstat (limited to 'test/CodeGen/block-byref-aggr.c')
| -rw-r--r-- | test/CodeGen/block-byref-aggr.c | 71 |
1 files changed, 60 insertions, 11 deletions
diff --git a/test/CodeGen/block-byref-aggr.c b/test/CodeGen/block-byref-aggr.c index 3027df0..eb342b8 100644 --- a/test/CodeGen/block-byref-aggr.c +++ b/test/CodeGen/block-byref-aggr.c @@ -1,17 +1,66 @@ // RUN: %clang_cc1 %s -emit-llvm -o - -fblocks -triple x86_64-apple-darwin10 | FileCheck %s -// rdar://9309454 -typedef struct { int v; } RetType; +// CHECK: [[AGG:%.*]] = type { i32 } +typedef struct { int v; } Agg; +Agg makeAgg(void); -RetType func(); +// 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}; -int main () { - __attribute__((__blocks__(byref))) RetType a = {100}; + a = makeAgg(); +} +// CHECK: 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 [[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]]* [[A]], i32 0, i32 1 +// CHECK-NEXT: [[T0:%.*]] = load [[BYREF]]** [[A_FORWARDING]] +// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[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 - a = func(); +// 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: [[C1:%.*]] = call i32 (...)* @func() -// CHECK-NEXT: [[CO:%.*]] = getelementptr -// CHECK-NEXT: store i32 [[C1]], i32* [[CO]] -// CHECK-NEXT: [[FORWARDING:%.*]] = getelementptr inbounds [[BR:%.*]]* [[A:%.*]], i32 0, i32 1 -// CHECK-NEXT: [[O:%.*]] = load [[BR]]** [[FORWARDING]] +// CHECK: 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 [[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]], i32 0, i32 1 +// CHECK-NEXT: [[T0:%.*]] = load [[B_BYREF]]** [[B_FORWARDING]] +// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[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]], i32 0, i32 1 +// CHECK-NEXT: [[T0:%.*]] = load [[A_BYREF]]** [[A_FORWARDING]] +// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[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 |
