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Changed CGObjCMac.cpp to add the marker externally_initialized to SELECTOR_REFERENCES in both the fragile and non-fragile API.

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This is to ensure that GlobalOpt in LLVM does not attempt to look through a
selector reference to a method var name at compile time.

I also added a test/updated old tests that need to recognize the new keyword.

rdar://12580965.

llvm-svn: 174461
This commit is contained in:
Michael Gottesman 2013-02-05 23:08:45 +00:00
parent 5dba16c581
commit 5c2059603c
5 changed files with 18 additions and 8 deletions
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2
clang/lib/CodeGen/CGObjCMac.cpp
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@ -4415,6 +4415,7 @@ llvm::Value *CGObjCMac::EmitSelector(CGBuilderTy &Builder, Selector Sel,
CreateMetadataVar("\01L_OBJC_SELECTOR_REFERENCES_", Casted,
"__OBJC,__message_refs,literal_pointers,no_dead_strip",
4, true);
Entry->setExternallyInitialized(true);
}
if (lvalue)
@ -6761,6 +6762,7 @@ llvm::Value *CGObjCNonFragileABIMac::EmitSelector(CGBuilderTy &Builder,
new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.SelectorPtrTy, false,
llvm::GlobalValue::InternalLinkage,
Casted, "\01L_OBJC_SELECTOR_REFERENCES_");
Entry->setExternallyInitialized(true);
Entry->setSection("__DATA, __objc_selrefs, literal_pointers, no_dead_strip");
CGM.AddUsedGlobal(Entry);
}

12
clang/test/CodeGenObjC/boxing.m
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@ -54,17 +54,17 @@ typedef signed char BOOL;
@end
// CHECK: [[WithIntMeth:@".*"]] = internal global [15 x i8] c"numberWithInt:\00"
// CHECK: [[WithIntSEL:@".*"]] = internal global i8* getelementptr inbounds ([15 x i8]* [[WithIntMeth]]
// CHECK: [[WithIntSEL:@".*"]] = internal externally_initialized global i8* getelementptr inbounds ([15 x i8]* [[WithIntMeth]]
// CHECK: [[WithCharMeth:@".*"]] = internal global [16 x i8] c"numberWithChar:\00"
// CHECK: [[WithCharSEL:@".*"]] = internal global i8* getelementptr inbounds ([16 x i8]* [[WithCharMeth]]
// CHECK: [[WithCharSEL:@".*"]] = internal externally_initialized global i8* getelementptr inbounds ([16 x i8]* [[WithCharMeth]]
// CHECK: [[WithBoolMeth:@".*"]] = internal global [16 x i8] c"numberWithBool:\00"
// CHECK: [[WithBoolSEL:@".*"]] = internal global i8* getelementptr inbounds ([16 x i8]* [[WithBoolMeth]]
// CHECK: [[WithBoolSEL:@".*"]] = internal externally_initialized global i8* getelementptr inbounds ([16 x i8]* [[WithBoolMeth]]
// CHECK: [[WithIntegerMeth:@".*"]] = internal global [19 x i8] c"numberWithInteger:\00"
// CHECK: [[WithIntegerSEL:@".*"]] = internal global i8* getelementptr inbounds ([19 x i8]* [[WithIntegerMeth]]
// CHECK: [[WithIntegerSEL:@".*"]] = internal externally_initialized global i8* getelementptr inbounds ([19 x i8]* [[WithIntegerMeth]]
// CHECK: [[WithUnsignedIntegerMeth:@".*"]] = internal global [27 x i8] c"numberWithUnsignedInteger:\00"
// CHECK: [[WithUnsignedIntegerSEL:@".*"]] = internal global i8* getelementptr inbounds ([27 x i8]* [[WithUnsignedIntegerMeth]]
// CHECK: [[WithUnsignedIntegerSEL:@".*"]] = internal externally_initialized global i8* getelementptr inbounds ([27 x i8]* [[WithUnsignedIntegerMeth]]
// CHECK: [[stringWithUTF8StringMeth:@".*"]] = internal global [22 x i8] c"stringWithUTF8String:\00"
// CHECK: [[stringWithUTF8StringSEL:@".*"]] = internal global i8* getelementptr inbounds ([22 x i8]* [[stringWithUTF8StringMeth]]
// CHECK: [[stringWithUTF8StringSEL:@".*"]] = internal externally_initialized global i8* getelementptr inbounds ([22 x i8]* [[stringWithUTF8StringMeth]]
int main() {
// CHECK: load i8** [[WithIntSEL]]

8
clang/test/CodeGenObjC/externally-initialized-selectors.m Normal file
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@ -0,0 +1,8 @@
// RUN: %clang_cc1 -cc1 -fobjc-runtime=macosx-fragile-10.5 -o - -emit-llvm %s | FileCheck %s
// RUN: %clang_cc1 -cc1 -o - -emit-llvm %s | FileCheck %s
// CHECK: @"\01L_OBJC_SELECTOR_REFERENCES_" = internal externally_initialized global
void test(id x) {
[x doSomething];
}

2
clang/test/CodeGenObjC/metadata-symbols-32.m
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@ -23,7 +23,7 @@
// RUN: grep '@"\\01L_OBJC_PROTOCOL_CLASS_METHODS_P" = internal global .*section "__OBJC,__cat_cls_meth,regular,no_dead_strip", align 4' %t
// RUN: grep '@"\\01L_OBJC_PROTOCOL_INSTANCE_METHODS_P" = internal global .*section "__OBJC,__cat_inst_meth,regular,no_dead_strip", align 4' %t
// RUN: grep '@"\\01L_OBJC_PROTOCOL_P" = internal global .*section "__OBJC,__protocol,regular,no_dead_strip", align 4' %t
// RUN: grep '@"\\01L_OBJC_SELECTOR_REFERENCES_[0-9]*" = internal global .*section "__OBJC,__message_refs,literal_pointers,no_dead_strip", align 4' %t
// RUN: grep '@"\\01L_OBJC_SELECTOR_REFERENCES_[0-9]*" = internal externally_initialized global .*section "__OBJC,__message_refs,literal_pointers,no_dead_strip", align 4' %t
// RUN: grep '@"\\01L_OBJC_SYMBOLS" = internal global .*section "__OBJC,__symbols,regular,no_dead_strip", align 4' %t
// RUN: grep '@"\\01l_OBJC_$_PROP_LIST_A" = internal global .*section "__OBJC,__property,regular,no_dead_strip", align 4' %t
// RUN: grep "\.lazy_reference \.objc_class_name_J0" %t

2
clang/test/CodeGenObjC/metadata-symbols-64.m
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@ -12,7 +12,7 @@
// RUN: grep '@"\\01L_OBJC_METH_VAR_NAME_[0-9]*" = internal global .* section "__TEXT,__objc_methname,cstring_literals", align 1' %t
// RUN: grep '@"\\01L_OBJC_METH_VAR_TYPE_[0-9]*" = internal global .* section "__TEXT,__objc_methtype,cstring_literals", align 1' %t
// RUN: grep '@"\\01L_OBJC_PROP_NAME_ATTR_[0-9]*" = internal global .* section "__TEXT,__cstring,cstring_literals", align 1' %t
// RUN: grep '@"\\01L_OBJC_SELECTOR_REFERENCES_*" = internal global .* section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"' %t
// RUN: grep '@"\\01L_OBJC_SELECTOR_REFERENCES_*" = internal externally_initialized global .* section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"' %t
// RUN: grep '@"\\01l_OBJC_$_CATEGORY_A_$_Cat" = internal global .* section "__DATA, __objc_const", align 8' %t
// RUN: grep '@"\\01l_OBJC_$_CATEGORY_CLASS_METHODS_A_$_Cat" = internal global .* section "__DATA, __objc_const", align 8' %t
// RUN: grep '@"\\01l_OBJC_$_CATEGORY_INSTANCE_METHODS_A_$_Cat" = internal global .* section "__DATA, __objc_const", align 8' %t