170 lines
7.7 KiB
Objective-C
170 lines
7.7 KiB
Objective-C
// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-apple-darwin -fblocks -emit-llvm -o - %s | FileCheck -check-prefix CHECK -check-prefix CHECK-NOARC %s
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// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-apple-darwin -fblocks -emit-llvm -fobjc-arc -o - %s | FileCheck -check-prefix CHECK -check-prefix CHECK-ARC %s
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typedef void (^BlockTy)(void);
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union U {
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int *i;
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long long *ll;
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} __attribute__((transparent_union));
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void escapingFunc0(BlockTy);
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void noescapeFunc0(id, __attribute__((noescape)) BlockTy);
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void noescapeFunc1(__attribute__((noescape)) int *);
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void noescapeFunc2(__attribute__((noescape)) id);
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void noescapeFunc3(__attribute__((noescape)) union U);
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// Block descriptors of non-escaping blocks don't need pointers to copy/dispose
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// helper functions.
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// CHECK: %[[STRUCT_BLOCK_DESCRIPTOR:.*]] = type { i64, i64 }
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// When the block is non-escaping, copy/dispose helpers aren't generated, so the
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// block layout string must include information about __strong captures.
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// CHECK-NOARC: %[[STRUCT_BLOCK_BYREF_B0:.*]] = type { i8*, %[[STRUCT_BLOCK_BYREF_B0]]*, i32, i32, i8*, %[[STRUCT_S0:.*]] }
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// CHECK-ARC: %[[STRUCT_BLOCK_BYREF_B0:.*]] = type { i8*, %[[STRUCT_BLOCK_BYREF_B0]]*, i32, i32, i8*, i8*, i8*, %[[STRUCT_S0:.*]] }
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// CHECK: %[[STRUCT_S0]] = type { i8*, i8* }
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// CHECK: @[[BLOCK_DESCIPTOR_TMP_2:.*ls32l8"]] = linkonce_odr hidden unnamed_addr constant { i64, i64, i8*, i64 } { i64 0, i64 40, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @{{.*}}, i32 0, i32 0), i64 256 }, align 8
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// CHECK-LABEL: define{{.*}} void @test0(
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// CHECK: call void @noescapeFunc0({{.*}}, {{.*}} nocapture {{.*}})
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// CHECK: declare void @noescapeFunc0(i8* noundef, {{.*}} nocapture noundef)
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void test0(BlockTy b) {
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noescapeFunc0(0, b);
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}
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// CHECK-LABEL: define{{.*}} void @test1(
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// CHECK: call void @noescapeFunc1({{.*}} nocapture {{.*}})
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// CHECK: declare void @noescapeFunc1({{.*}} nocapture noundef)
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void test1(int *i) {
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noescapeFunc1(i);
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}
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// CHECK-LABEL: define{{.*}} void @test2(
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// CHECK: call void @noescapeFunc2({{.*}} nocapture {{.*}})
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// CHECK: declare void @noescapeFunc2({{.*}} nocapture noundef)
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void test2(id i) {
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noescapeFunc2(i);
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}
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// CHECK-LABEL: define{{.*}} void @test3(
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// CHECK: call void @noescapeFunc3({{.*}} nocapture {{.*}})
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// CHECK: declare void @noescapeFunc3({{.*}} nocapture)
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void test3(union U u) {
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noescapeFunc3(u);
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}
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// CHECK: define internal void @"\01-[C0 m0:]"({{.*}}, {{.*}}, {{.*}} nocapture {{.*}})
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// CHECK-LABEL: define{{.*}} void @test4(
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// CHECK: call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i32*)*)(i8* {{.*}}, i8* {{.*}}, i32* nocapture {{.*}})
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@interface C0
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-(void) m0:(int*)__attribute__((noescape)) p0;
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@end
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@implementation C0
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-(void) m0:(int*)__attribute__((noescape)) p0 {
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}
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@end
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void test4(C0 *c0, int *p) {
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[c0 m0:p];
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}
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// CHECK-LABEL: define{{.*}} void @test5(
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// CHECK: call void {{.*}}(i8* noundef bitcast ({ i8**, i32, i32, i8*, {{.*}} }* @{{.*}} to i8*), i32* nocapture {{.*}})
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// CHECK: call void {{.*}}(i8* {{.*}}, i32* nocapture {{.*}})
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// CHECK: define internal void @{{.*}}(i8* {{.*}}, i32* nocapture {{.*}})
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typedef void (^BlockTy2)(__attribute__((noescape)) int *);
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void test5(BlockTy2 b, int *p) {
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^(int *__attribute__((noescape)) p0){}(p);
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b(p);
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}
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// If the block is non-escaping, set the BLOCK_IS_NOESCAPE and BLOCK_IS_GLOBAL
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// bits of field 'flags' and set the 'isa' field to 'NSConcreteGlobalBlock'.
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// CHECK: define{{.*}} void @test6(i8* noundef %{{.*}}, i8* noundef %[[B:.*]])
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// CHECK: %{{.*}} = alloca i8*, align 8
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// CHECK: %[[B_ADDR:.*]] = alloca i8*, align 8
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// CHECK: %[[BLOCK:.*]] = alloca <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, align 8
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// CHECK-NOARC: store i8* %[[B]], i8** %[[B_ADDR]], align 8
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// CHECK-ARC: store i8* null, i8** %[[B_ADDR]], align 8
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// CHECK-ARC: call void @llvm.objc.storeStrong(i8** %[[B_ADDR]], i8* %[[B]])
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// CHECK: %[[BLOCK_ISA:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %[[BLOCK]], i32 0, i32 0
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// CHECK: store i8* bitcast (i8** @_NSConcreteGlobalBlock to i8*), i8** %[[BLOCK_ISA]], align 8
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// CHECK: %[[BLOCK_FLAGS:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %[[BLOCK]], i32 0, i32 1
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// CHECK: store i32 -796917760, i32* %[[BLOCK_FLAGS]], align 8
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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* }>* %[[BLOCK]], i32 0, i32 4
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// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i64 }* @[[BLOCK_DESCIPTOR_TMP_2]] to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
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// CHECK: %[[BLOCK_CAPTURED:.*]] = 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-NOARC: %[[V1:.*]] = load i8*, i8** %[[B_ADDR]], align 8
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// CHECK-NOARC: store i8* %[[V1]], i8** %[[BLOCK_CAPTURED]], align 8
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// CHECK-ARC: %[[V2:.*]] = load i8*, i8** %[[B_ADDR]], align 8
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// CHECK-ARC: %[[V3:.*]] = call i8* @llvm.objc.retain(i8* %[[V2]])
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// CHECK-ARC: store i8* %[[V3]], i8** %[[BLOCK_CAPTURED]], align 8
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// CHECK: call void @noescapeFunc0(
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// CHECK-ARC: call void @llvm.objc.storeStrong(i8** %[[BLOCK_CAPTURED]], i8* null)
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// CHECK-ARC: call void @llvm.objc.storeStrong(i8** %[[B_ADDR]], i8* null)
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// Non-escaping blocks don't need copy/dispose helper functions.
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// CHECK-NOT: define internal void @__copy_helper_block_
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// CHECK-NOT: define internal void @__destroy_helper_block_
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void func(id);
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void test6(id a, id b) {
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noescapeFunc0(a, ^{ func(b); });
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}
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// We don't need either the byref helper functions or the byref structs for
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// __block variables that are not captured by escaping blocks.
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// CHECK: define{{.*}} void @test7(
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// CHECK: alloca i8*, align 8
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// CHECK: %[[B0:.*]] = alloca i8*, align 8
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// CHECK: %[[BLOCK:.*]] = alloca <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8** }>, align 8
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// CHECK: %[[BLOCK_CAPTURED:.*]] = 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: store i8** %[[B0]], i8*** %[[BLOCK_CAPTURED]], align 8
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// CHECK-ARC-NOT: define internal void @__Block_byref_object_copy_
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// CHECK-ARC-NOT: define internal void @__Block_byref_object_dispose_
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void test7(void) {
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id a;
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__block id b0;
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noescapeFunc0(a, ^{ (void)b0; });
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}
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// __block variables captured by escaping blocks need byref helper functions.
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// CHECK: define{{.*}} void @test8(
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// CHECK: %[[A:.*]] = alloca i8*, align 8
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// CHECK: %[[B0:.*]] = alloca %[[STRUCT_BLOCK_BYREF_B0]], align 8
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// CHECK: alloca <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, align 8
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// CHECK: %[[BLOCK1:.*]] = alloca <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, align 8
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// CHECK: %[[BLOCK_CAPTURED7:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %[[BLOCK1]], i32 0, i32 5
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// CHECK: %[[V3:.*]] = bitcast %[[STRUCT_BLOCK_BYREF_B0]]* %[[B0]] to i8*
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// CHECK: store i8* %[[V3]], i8** %[[BLOCK_CAPTURED7]], align 8
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// CHECK-ARC: define internal void @__Block_byref_object_copy_
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// CHECK-ARC: define internal void @__Block_byref_object_dispose_
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// CHECK: define linkonce_odr hidden void @__copy_helper_block_
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// CHECK: define linkonce_odr hidden void @__destroy_helper_block_
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struct S0 {
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id a, b;
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};
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void test8(void) {
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id a;
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__block struct S0 b0;
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noescapeFunc0(a, ^{ (void)b0; });
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escapingFunc0(^{ (void)b0; });
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}
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