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[PPC] Use alias symbols in address computation.

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This seems to match what gcc does for ppc and what every other llvm
backend does.

This is a fixed version of r209638. The difference is to avoid any change
in behavior for functions. The logic for using constant pools for function
addresseses is spread over a few places and we have to keep them in sync.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209821 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2014-05-29 15:41:38 +00:00
parent f5df18bff0
commit 289a9d75de
3 changed files with 48 additions and 34 deletions
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37
lib/Target/PowerPC/PPCAsmPrinter.cpp
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@ -380,15 +380,12 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
bool IsAvailExt = false;
if (MO.isGlobal()) {
const GlobalValue *GValue = MO.getGlobal();
const GlobalAlias *GAlias = dyn_cast<GlobalAlias>(GValue);
const GlobalValue *RealGValue = GAlias ? GAlias->getAliasee() : GValue;
MOSymbol = getSymbol(RealGValue);
const GlobalVariable *GVar = dyn_cast<GlobalVariable>(RealGValue);
IsExternal = GVar && !GVar->hasInitializer();
IsCommon = GVar && RealGValue->hasCommonLinkage();
IsFunction = !GVar;
IsAvailExt = GVar && RealGValue->hasAvailableExternallyLinkage();
const GlobalValue *GV = MO.getGlobal();
MOSymbol = getSymbol(GV);
IsExternal = GV->isDeclaration();
IsCommon = GV->hasCommonLinkage();
IsFunction = GV->getType()->getElementType()->isFunctionTy();
IsAvailExt = GV->hasAvailableExternallyLinkage();
} else if (MO.isCPI())
MOSymbol = GetCPISymbol(MO.getIndex());
else if (MO.isJTI())
@ -427,13 +424,10 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
}
else if (MO.isGlobal()) {
const GlobalValue *GValue = MO.getGlobal();
const GlobalAlias *GAlias = dyn_cast<GlobalAlias>(GValue);
const GlobalValue *RealGValue = GAlias ? GAlias->getAliasee() : GValue;
MOSymbol = getSymbol(RealGValue);
const GlobalVariable *GVar = dyn_cast<GlobalVariable>(RealGValue);
if (!GVar || !GVar->hasInitializer() || RealGValue->hasCommonLinkage() ||
RealGValue->hasAvailableExternallyLinkage() ||
MOSymbol = getSymbol(GValue);
if (GValue->getType()->getElementType()->isFunctionTy() ||
GValue->isDeclaration() || GValue->hasCommonLinkage() ||
GValue->hasAvailableExternallyLinkage() ||
TM.getCodeModel() == CodeModel::Large)
MOSymbol = lookUpOrCreateTOCEntry(MOSymbol);
}
@ -460,13 +454,10 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
bool IsFunction = false;
if (MO.isGlobal()) {
const GlobalValue *GValue = MO.getGlobal();
const GlobalAlias *GAlias = dyn_cast<GlobalAlias>(GValue);
const GlobalValue *RealGValue = GAlias ? GAlias->getAliasee() : GValue;
MOSymbol = getSymbol(RealGValue);
const GlobalVariable *GVar = dyn_cast<GlobalVariable>(RealGValue);
IsExternal = GVar && !GVar->hasInitializer();
IsFunction = !GVar;
const GlobalValue *GV = MO.getGlobal();
MOSymbol = getSymbol(GV);
IsExternal = GV->isDeclaration();
IsFunction = GV->getType()->getElementType()->isFunctionTy();
} else if (MO.isCPI())
MOSymbol = GetCPISymbol(MO.getIndex());