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[ObjC] Use the name specified by objc_runtime_name instead of the class

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identifier.

This patch fixes a few places in CGObjCMac.cpp where the class
identifier was used instead of the name specified by objc_runtime_name.

rdar://problem/37910822

Differential Revision: https://reviews.llvm.org/D45101

llvm-svn: 329128
This commit is contained in:
Akira Hatanaka 2018-04-03 22:50:16 +00:00
parent d9189d1e76
commit 0c194461b5
2 changed files with 30 additions and 2 deletions
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8
clang/lib/CodeGen/CGObjCMac.cpp
View File

@ -3401,7 +3401,9 @@ static bool hasMRCWeakIvars(CodeGenModule &CGM,
See EmitClassExtension();
*/
void CGObjCMac::GenerateClass(const ObjCImplementationDecl *ID) {
DefinedSymbols.insert(ID->getIdentifier());
IdentifierInfo *RuntimeName =
&CGM.getContext().Idents.get(ID->getObjCRuntimeNameAsString());
DefinedSymbols.insert(RuntimeName);
std::string ClassName = ID->getNameAsString();
// FIXME: Gross
@ -4980,7 +4982,9 @@ llvm::Value *CGObjCMac::EmitClassRef(CodeGenFunction &CGF,
if (ID->hasAttr<ObjCRuntimeVisibleAttr>())
return EmitClassRefViaRuntime(CGF, ID, ObjCTypes);
return EmitClassRefFromId(CGF, ID->getIdentifier());
IdentifierInfo *RuntimeName =
&CGM.getContext().Idents.get(ID->getObjCRuntimeNameAsString());
return EmitClassRefFromId(CGF, RuntimeName);
}
llvm::Value *CGObjCMac::EmitNSAutoreleasePoolClassRef(CodeGenFunction &CGF) {

24
clang/test/CodeGenObjC/objc-runtime-name.m Normal file
View File

@ -0,0 +1,24 @@
// RUN: %clang_cc1 -triple i386-apple-macosx10.13.0 -fobjc-runtime=macosx-fragile-10.13.0 -fobjc-subscripting-legacy-runtime -emit-llvm -o - %s | FileCheck %s
// Check that the runtime name is emitted and used instead of the class
// identifier.
// CHECK: module asm {{.*}}objc_class_name_XYZ=0
// CHECK: module asm {{.*}}globl .objc_class_name_XYZ
// CHECK: module asm {{.*}}lazy_reference .objc_class_name_XYZ
// CHECK: @[[OBJC_CLASS_NAME:.*]] = private unnamed_addr constant [4 x i8] c"XYZ{{.*}}, section "__TEXT,__cstring,cstring_literals",
// CHECK: = private global {{.*}} bitcast ([4 x i8]* @[[OBJC_CLASS_NAME]] to {{.*}}), section "__OBJC,__cls_refs,literal_pointers,no_dead_strip"
__attribute__((objc_root_class,objc_runtime_name("XYZ")))
@interface A
+(void)m1;
@end
@implementation A
+(void)m1 {}
@end
void test(void) {
[A m1];
}