IRgen/NeXT: Fix several alignment issues with Objective-C metadata symbols:
- Fix some places that had the alignment hard coded.
- Use ABI type alignment, not preferred type alignment -- neither of this is exactly right, as we really want the C type alignment as required by the runtime, but the ABI alignment is a more correct choice.
This should be equivalent for x86_64, but fixes the alignment for ARM.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102314 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp
index 1312228..62e7900 100644
--- a/lib/CodeGen/CGObjCMac.cpp
+++ b/lib/CodeGen/CGObjCMac.cpp
@@ -4202,7 +4202,7 @@
llvm::GlobalValue::InternalLinkage,
Init,
SymbolName);
- GV->setAlignment(8);
+ GV->setAlignment(CGM.getTargetData().getABITypeAlignment(Init->getType()));
GV->setSection(SectionName);
CGM.AddUsedGlobal(GV);
}
@@ -4399,7 +4399,7 @@
std::string("\01l_OBJC_METACLASS_RO_$_")+ClassName :
std::string("\01l_OBJC_CLASS_RO_$_")+ClassName);
CLASS_RO_GV->setAlignment(
- CGM.getTargetData().getPrefTypeAlignment(ObjCTypes.ClassRonfABITy));
+ CGM.getTargetData().getABITypeAlignment(ObjCTypes.ClassRonfABITy));
CLASS_RO_GV->setSection("__DATA, __objc_const");
return CLASS_RO_GV;
@@ -4435,7 +4435,7 @@
GV->setInitializer(Init);
GV->setSection("__DATA, __objc_data");
GV->setAlignment(
- CGM.getTargetData().getPrefTypeAlignment(ObjCTypes.ClassnfABITy));
+ CGM.getTargetData().getABITypeAlignment(ObjCTypes.ClassnfABITy));
if (HiddenVisibility)
GV->setVisibility(llvm::GlobalValue::HiddenVisibility);
return GV;
@@ -4685,7 +4685,7 @@
Init,
ExtCatName);
GCATV->setAlignment(
- CGM.getTargetData().getPrefTypeAlignment(ObjCTypes.CategorynfABITy));
+ CGM.getTargetData().getABITypeAlignment(ObjCTypes.CategorynfABITy));
GCATV->setSection("__DATA, __objc_const");
CGM.AddUsedGlobal(GCATV);
DefinedCategories.push_back(GCATV);
@@ -4745,7 +4745,7 @@
Init,
Name);
GV->setAlignment(
- CGM.getTargetData().getPrefTypeAlignment(Init->getType()));
+ CGM.getTargetData().getABITypeAlignment(Init->getType()));
GV->setSection(Section);
CGM.AddUsedGlobal(GV);
return llvm::ConstantExpr::getBitCast(GV,
@@ -4780,7 +4780,7 @@
IvarOffsetGV->setInitializer(llvm::ConstantInt::get(ObjCTypes.LongTy,
Offset));
IvarOffsetGV->setAlignment(
- CGM.getTargetData().getPrefTypeAlignment(ObjCTypes.LongTy));
+ CGM.getTargetData().getABITypeAlignment(ObjCTypes.LongTy));
// FIXME: This matches gcc, but shouldn't the visibility be set on the use as
// well (i.e., in ObjCIvarOffsetVariable).
@@ -4867,7 +4867,7 @@
Init,
Prefix + OID->getName());
GV->setAlignment(
- CGM.getTargetData().getPrefTypeAlignment(Init->getType()));
+ CGM.getTargetData().getABITypeAlignment(Init->getType()));
GV->setSection("__DATA, __objc_const");
CGM.AddUsedGlobal(GV);
@@ -4986,7 +4986,7 @@
false, llvm::GlobalValue::WeakAnyLinkage, Init,
"\01l_OBJC_PROTOCOL_$_" + PD->getName());
Entry->setAlignment(
- CGM.getTargetData().getPrefTypeAlignment(ObjCTypes.ProtocolnfABITy));
+ CGM.getTargetData().getABITypeAlignment(ObjCTypes.ProtocolnfABITy));
Entry->setSection("__DATA,__datacoal_nt,coalesced");
}
Entry->setVisibility(llvm::GlobalValue::HiddenVisibility);
@@ -4999,7 +4999,7 @@
false, llvm::GlobalValue::WeakAnyLinkage, Entry,
"\01l_OBJC_LABEL_PROTOCOL_$_" + PD->getName());
PTGV->setAlignment(
- CGM.getTargetData().getPrefTypeAlignment(ObjCTypes.ProtocolnfABIPtrTy));
+ CGM.getTargetData().getABITypeAlignment(ObjCTypes.ProtocolnfABIPtrTy));
PTGV->setSection("__DATA, __objc_protolist, coalesced, no_dead_strip");
PTGV->setVisibility(llvm::GlobalValue::HiddenVisibility);
CGM.AddUsedGlobal(PTGV);
@@ -5055,7 +5055,7 @@
Name);
GV->setSection("__DATA, __objc_const");
GV->setAlignment(
- CGM.getTargetData().getPrefTypeAlignment(Init->getType()));
+ CGM.getTargetData().getABITypeAlignment(Init->getType()));
CGM.AddUsedGlobal(GV);
return llvm::ConstantExpr::getBitCast(GV,
ObjCTypes.ProtocolListnfABIPtrTy);
@@ -5252,7 +5252,7 @@
ClassGV,
"\01L_OBJC_CLASSLIST_REFERENCES_$_");
Entry->setAlignment(
- CGM.getTargetData().getPrefTypeAlignment(
+ CGM.getTargetData().getABITypeAlignment(
ObjCTypes.ClassnfABIPtrTy));
Entry->setSection("__DATA, __objc_classrefs, regular, no_dead_strip");
CGM.AddUsedGlobal(Entry);
@@ -5275,7 +5275,7 @@
ClassGV,
"\01L_OBJC_CLASSLIST_SUP_REFS_$_");
Entry->setAlignment(
- CGM.getTargetData().getPrefTypeAlignment(
+ CGM.getTargetData().getABITypeAlignment(
ObjCTypes.ClassnfABIPtrTy));
Entry->setSection("__DATA, __objc_superrefs, regular, no_dead_strip");
CGM.AddUsedGlobal(Entry);
@@ -5301,7 +5301,7 @@
MetaClassGV,
"\01L_OBJC_CLASSLIST_SUP_REFS_$_");
Entry->setAlignment(
- CGM.getTargetData().getPrefTypeAlignment(
+ CGM.getTargetData().getABITypeAlignment(
ObjCTypes.ClassnfABIPtrTy));
Entry->setSection("__DATA, __objc_superrefs, regular, no_dead_strip");
@@ -5860,7 +5860,8 @@
if (CGM.getLangOptions().getVisibilityMode() == LangOptions::Hidden)
Entry->setVisibility(llvm::GlobalValue::HiddenVisibility);
- Entry->setAlignment(8);
+ Entry->setAlignment(CGM.getTargetData().getABITypeAlignment(
+ ObjCTypes.EHTypeTy));
if (ForDefinition) {
Entry->setSection("__DATA,__objc_const");