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c46827c7ed
LLVM IR recently added a Type parameter to the byval Attribute, so that when pointers become opaque and no longer have an element type the information will still be present in IR. For now the Type parameter is optional (which is why Clang didn't need this change at the time), but it will become mandatory soon. llvm-svn: 362652
125 lines
5.6 KiB
C
125 lines
5.6 KiB
C
// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - -fblocks | FileCheck %s
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// CHECK: %[[STRUCT_BLOCK_DESCRIPTOR:.*]] = type { i32, i32 }
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// CHECK: @{{.*}} = internal constant { i32, i32, i8*, i8*, i8*, i8* } { i32 0, i32 24, i8* bitcast (void (i8*, i8*)* @__copy_helper_block_4_20r to i8*), i8* bitcast (void (i8*)* @__destroy_helper_block_4_20r to i8*), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @{{.*}}, i32 0, i32 0), i8* null }, align 4
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// CHECK: @[[BLOCK_DESCRIPTOR_TMP21:.*]] = internal constant { i32, i32, i8*, i8*, i8*, i8* } { i32 0, i32 24, i8* bitcast (void (i8*, i8*)* @__copy_helper_block_4_20r to i8*), i8* bitcast (void (i8*)* @__destroy_helper_block_4_20r to i8*), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @{{.*}}, i32 0, i32 0), i8* null }, align 4
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void (^f)(void) = ^{};
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// rdar://6768379
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int f0(int (^a0)()) {
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return a0(1, 2, 3);
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}
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// Verify that attributes on blocks are set correctly.
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typedef struct s0 T;
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struct s0 {
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int a[64];
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};
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// CHECK: define internal void @__f2_block_invoke(%struct.s0* noalias sret {{%.*}}, i8* {{%.*}}, %struct.s0* byval(%struct.s0) align 4 {{.*}})
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struct s0 f2(struct s0 a0) {
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return ^(struct s0 a1){ return a1; }(a0);
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}
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// This should not crash: rdar://6808051
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void *P = ^{
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void *Q = __func__;
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};
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void (^test1)(void) = ^(void) {
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__block int i;
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^ { i = 1; }();
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};
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// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block_4_20r(i8*, i8*) unnamed_addr
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// CHECK: %[[_ADDR:.*]] = alloca i8*, align 4
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// CHECK-NEXT: %[[_ADDR1:.*]] = alloca i8*, align 4
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// CHECK-NEXT: store i8* %0, i8** %[[_ADDR]], align 4
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// CHECK-NEXT: store i8* %1, i8** %[[_ADDR1]], align 4
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// CHECK-NEXT: %[[V2:.*]] = load i8*, i8** %[[_ADDR1]], align 4
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// CHECK-NEXT: %[[BLOCK_SOURCE:.*]] = bitcast i8* %[[V2]] to <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>*
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// CHECK-NEXT: %[[V3:.*]] = load i8*, i8** %[[_ADDR]], align 4
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// CHECK-NEXT: %[[BLOCK_DEST:.*]] = bitcast i8* %[[V3]] to <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>*
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// CHECK-NEXT: %[[V4:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %[[BLOCK_SOURCE]], i32 0, i32 5
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// CHECK-NEXT: %[[V5:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %[[BLOCK_DEST]], i32 0, i32 5
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// CHECK-NEXT: %[[BLOCKCOPY_SRC:.*]] = load i8*, i8** %[[V4]], align 4
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// CHECK-NEXT: %[[V6:.*]] = bitcast i8** %[[V5]] to i8*
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// CHECK-NEXT: call void @_Block_object_assign(i8* %[[V6]], i8* %[[BLOCKCOPY_SRC]], i32 8)
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// CHECK-NEXT: ret void
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// CHECK-LABEL: define linkonce_odr hidden void @__destroy_helper_block_4_20r(i8*) unnamed_addr
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// CHECK: %[[_ADDR:.*]] = alloca i8*, align 4
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// CHECK-NEXT: store i8* %0, i8** %[[_ADDR]], align 4
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// CHECK-NEXT: %[[V1:.*]] = load i8*, i8** %[[_ADDR]], align 4
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// CHECK-NEXT: %[[BLOCK:.*]] = bitcast i8* %[[V1]] to <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>*
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// CHECK-NEXT: %[[V2:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %[[BLOCK]], i32 0, i32 5
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// CHECK-NEXT: %[[V3:.*]] = load i8*, i8** %[[V2]], align 4
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// CHECK-NEXT: call void @_Block_object_dispose(i8* %[[V3]], i32 8)
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// CHECK-NEXT: ret void
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typedef double ftype(double);
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// It's not clear that we *should* support this syntax, but until that decision
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// is made, we should support it properly and not crash.
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ftype ^test2 = ^ftype {
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return 0;
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};
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// rdar://problem/8605032
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void f3_helper(void (^)(void));
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void f3() {
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_Bool b = 0;
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f3_helper(^{ if (b) {} });
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}
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// rdar://problem/11322251
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// The bool can fill in between the header and the long long.
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// Add the appropriate amount of padding between them.
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void f4_helper(long long (^)(void));
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// CHECK-LABEL: define void @f4()
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void f4(void) {
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_Bool b = 0;
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long long ll = 0;
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// CHECK: alloca <{ i8*, i32, i32, i8*, {{%.*}}*, i8, [3 x i8], i64 }>, align 8
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f4_helper(^{ if (b) return ll; return 0LL; });
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}
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// rdar://problem/11354538
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// The alignment after rounding up to the align of F5 is actually
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// greater than the required alignment. Don't assert.
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struct F5 {
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char buffer[32] __attribute((aligned));
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};
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void f5_helper(void (^)(struct F5 *));
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// CHECK-LABEL: define void @f5()
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void f5(void) {
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struct F5 value;
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// CHECK: alloca <{ i8*, i32, i32, i8*, {{%.*}}*, [12 x i8], [[F5:%.*]] }>, align 16
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f5_helper(^(struct F5 *slot) { *slot = value; });
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}
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// rdar://14085217
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void (^b)() = ^{};
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int main() {
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(b?: ^{})();
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}
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// CHECK: [[ZERO:%.*]] = load void (...)*, void (...)** @b
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// CHECK-NEXT: [[TB:%.*]] = icmp ne void (...)* [[ZERO]], null
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// CHECK-NEXT: br i1 [[TB]], label [[CT:%.*]], label [[CF:%.*]]
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// CHECK: [[ONE:%.*]] = bitcast void (...)* [[ZERO]] to void ()*
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// CHECK-NEXT: br label [[CE:%.*]]
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// Ensure that we don't emit helper code in copy/dispose routines for variables
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// that are const-captured.
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void testConstCaptureInCopyAndDestroyHelpers() {
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const int x = 0;
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__block int i;
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(^ { i = x; })();
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}
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// CHECK-LABEL: define void @testConstCaptureInCopyAndDestroyHelpers(
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// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %{{.*}}, i32 0, i32 4
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// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i32, i32, i8*, i8*, i8*, i8* }* @[[BLOCK_DESCRIPTOR_TMP21]] to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 4
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// CHECK-LABEL: define internal void @__testConstCaptureInCopyAndDestroyHelpers_block_invoke
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