dnrops
/
clang
mirror of https://github.com/microsoft/clang.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Add an ARC autoreleased-return-value caller marker on i386. 

rdar://24531556

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@259932 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
John McCall 2016-02-05 21:37:38 +00:00
parent 0a2b326966
commit ecb24d6bef
2 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
lib/CodeGen/TargetInfo.cpp
View File

@ -920,6 +920,11 @@ public:
('T' << 24);
return llvm::ConstantInt::get(CGM.Int32Ty, Sig);
}
StringRef getARCRetainAutoreleasedReturnValueMarker() const override {
return "movl\t%ebp, %ebp"
"\t\t## marker for objc_retainAutoreleaseReturnValue";
}
};
}

43
test/CodeGenObjC/arc-i386.m Normal file
View File

@ -0,0 +1,43 @@
// RUN: %clang_cc1 -triple i386-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -o - %s | FileCheck %s
// RUN: %clang_cc1 -triple i386-apple-iossimulator6.0 -emit-llvm -fblocks -fobjc-arc -o - %s | FileCheck %s
// <rdar://24531556>: implement objc_retainAutoreleasedReturnValue on i386
// CHECK-LABEL: define i8* @test0()
id test0(void) {
extern id test0_helper(void);
// CHECK: [[T0:%.*]] = call i8* @test0_helper()
// CHECK-NEXT: ret i8* [[T0]]
return test0_helper();
}
// CHECK-LABEL: define void @test1()
void test1(void) {
extern id test1_helper(void);
// CHECK: [[T0:%.*]] = call i8* @test1_helper()
// CHECK-NEXT: call void asm sideeffect "mov
// CHECK-NEXT: [[T1:%.*]] = call i8* @objc_retainAutoreleasedReturnValue(i8* [[T0]])
// CHECK-NEXT: store i8* [[T1]],
// CHECK-NEXT: call void @objc_storeStrong(
// CHECK-NEXT: ret void
id x = test1_helper();
}
// rdar://problem/12133032
// CHECK-LABEL: define {{.*}} @test2()
@class A;
A *test2(void) {
extern A *test2_helper(void);
// CHECK: [[T0:%.*]] = call [[A:%.*]]* @test2_helper()
// CHECK-NEXT: ret [[A]]* [[T0]]
return test2_helper();
}
// CHECK-LABEL: define i8* @test3()
id test3(void) {
extern A *test3_helper(void);
// CHECK: [[T0:%.*]] = call [[A]]* @test3_helper()
// CHECK-NEXT: [[T1:%.*]] = bitcast [[A]]* [[T0]] to i8*
// CHECK-NEXT: ret i8* [[T1]]
return test3_helper();
}