return false;
if (AM.BaseGV) {
- // We can only fold this if we don't need an extra load.
- if (Subtarget->GVRequiresExtraLoad(AM.BaseGV, getTargetMachine()))
+ unsigned GVFlags =
+ Subtarget->ClassifyGlobalReference(AM.BaseGV, getTargetMachine());
+
+ // If a reference to this global requires an extra load, we can't fold it.
+ if (isGlobalStubReference(GVFlags))
return false;
- // If BaseGV requires a register, we cannot also have a BaseReg.
- if (Subtarget->GVRequiresRegister(AM.BaseGV, getTargetMachine()) &&
- AM.HasBaseReg)
+
+ // If BaseGV requires a register for the PIC base, we cannot also have a
+ // BaseReg specified.
+ if (AM.HasBaseReg && isGlobalRelativeToPICBase(GVFlags))
return false;
// X86-64 only supports addr of globals in small code model.
return isGlobalStubReference(ClassifyGlobalReference(GV, TM));
}
-/// True if accessing the GV requires a register. This is a superset of the
-/// cases where GVRequiresExtraLoad is true. Some variations of PIC require
-/// a register, but not an extra load.
-bool X86Subtarget::GVRequiresRegister(const GlobalValue *GV,
- const TargetMachine &TM) const {
- if (GVRequiresExtraLoad(GV, TM))
- return true;
-
- // Code below here need only consider cases where GVRequiresExtraLoad
- // returns false.
- if (TM.getRelocationModel() == Reloc::PIC_)
- return GV->hasLocalLinkage() || GV->hasExternalLinkage();
- return false;
-}
/// getBZeroEntry - This function returns the name of a function which has an
/// interface like the non-standard bzero function, if such a function exists on
/// or index register of the address, not the GV offset field.
bool GVRequiresExtraLoad(const GlobalValue *GV, const TargetMachine &TM)const;
- /// True if accessing the GV requires a register. This is a superset of the
- /// cases where GVRequiresExtraLoad is true. Some variations of PIC require
- /// a register, but not an extra load.
- bool GVRequiresRegister(const GlobalValue *GV, const TargetMachine &TM) const;
-
/// IsLegalToCallImmediateAddr - Return true if the subtarget allows calls
/// to immediate address.
bool IsLegalToCallImmediateAddr(const TargetMachine &TM) const;