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CodeGen: correct block mangling in ObjC 

Mangling for blocks defined within blocks in an ObjectiveC context were also
broken by SVN r219393.  Because the code in mangleName assumed that the code was
either C or C++, we would trigger assertions when trying to mangle the inner
blocks in an ObjectiveC context.

Add a test and use the ObjectiveC specific mangling when dealing with an
ObjectiveC method declaration.

llvm-svn: 219697
This commit is contained in:
Saleem Abdulrasool 2014-10-14 17:20:18 +00:00
parent 64ab4de443
commit 3b43447619
2 changed files with 35 additions and 1 deletions
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7
clang/lib/AST/Mangle.cpp
View File

@ -135,7 +135,10 @@ void MangleContext::mangleName(const NamedDecl *D, raw_ostream &Out) {
bool MCXX = shouldMangleCXXName(D);
const TargetInfo &TI = Context.getTargetInfo();
if (CC == SOF_OTHER || (MCXX && TI.getCXXABI() == TargetCXXABI::Microsoft)) {
mangleCXXName(D, Out);
if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))
mangleObjCMethodName(OMD, Out);
else
mangleCXXName(D, Out);
return;
}
@ -147,6 +150,8 @@ void MangleContext::mangleName(const NamedDecl *D, raw_ostream &Out) {
if (!MCXX)
Out << D->getIdentifier()->getName();
else if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))
mangleObjCMethodName(OMD, Out);
else
mangleCXXName(D, Out);

29
clang/test/CodeGenObjC/mangle-blocks.m Normal file
View File

@ -0,0 +1,29 @@
// RUN: %clang_cc1 -triple i386-apple-ios -fblocks -emit-llvm -o - %s -Wno-objc-root-class \
// RUN: | FileCheck %s
void __assert_rtn(const char *, const char *, int, const char *);
@interface Test
- (void (^)(void)) mangle;
@end
@implementation Test
- (void (^)(void)) mangle {
return ^() {
void (^b)(void) = ^() {
__assert_rtn(__func__, __FILE__, __LINE__, "mangle");
};
};
}
@end
// CHECK: @"__func__.__14-[Test mangle]_block_invoke_2" = private unnamed_addr constant [34 x i8] c"__14-[Test mangle]_block_invoke_2\00", align 1
// CHECK: @.str = private unnamed_addr constant {{.*}}, align 1
// CHECK: @.str1 = private unnamed_addr constant [7 x i8] c"mangle\00", align 1
// CHECK: define internal void @"__14-[Test mangle]_block_invoke"(i8* %.block_descriptor)
// CHECK: define internal void @"__14-[Test mangle]_block_invoke_2"(i8* %.block_descriptor){{.*}}{
// CHECK: call void @__assert_rtn(i8* getelementptr inbounds ([34 x i8]* @"__func__.__14-[Test mangle]_block_invoke_2", i32 0, i32 0), i8* getelementptr inbounds {{.*}}, i32 14, i8* getelementptr inbounds ([7 x i8]* @.str1, i32 0, i32 0))
// CHECK: }