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Use MCSymbols for FastISel.

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The summary is that it moves the mangling earlier and replaces a few
calls to .addExternalSymbol with addSym.

I originally wanted to replace all the uses of addExternalSymbol with
addSym, but noticed it was a lot of work and doesn't need to be done
all at once.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240395 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2015-06-23 12:21:54 +00:00
parent b7f5b8b4b2
commit b9ed9af341
12 changed files with 96 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
include/llvm/CodeGen/FastISel.h
View File

@@ -69,7 +69,7 @@ public:
unsigned NumFixedArgs;
CallingConv::ID CallConv;
const Value *Callee;
const char *SymName;
MCSymbol *Symbol;
ArgListTy Args;
ImmutableCallSite *CS;
MachineInstr *Call;
@@ -88,7 +88,7 @@ public:
: RetTy(nullptr), RetSExt(false), RetZExt(false), IsVarArg(false),
IsInReg(false), DoesNotReturn(false), IsReturnValueUsed(true),
IsTailCall(false), NumFixedArgs(-1), CallConv(CallingConv::C),
Callee(nullptr), SymName(nullptr), CS(nullptr), Call(nullptr),
Callee(nullptr), Symbol(nullptr), CS(nullptr), Call(nullptr),
ResultReg(0), NumResultRegs(0), IsPatchPoint(false) {}
CallLoweringInfo &setCallee(Type *ResultTy, FunctionType *FuncTy,
@@ -114,12 +114,12 @@ public:
}
CallLoweringInfo &setCallee(Type *ResultTy, FunctionType *FuncTy,
const char *Target, ArgListTy &&ArgsList,
MCSymbol *Target, ArgListTy &&ArgsList,
ImmutableCallSite &Call,
unsigned FixedArgs = ~0U) {
RetTy = ResultTy;
Callee = Call.getCalledValue();
SymName = Target;
Symbol = Target;
IsInReg = Call.paramHasAttr(0, Attribute::InReg);
DoesNotReturn = Call.doesNotReturn();
@@ -148,11 +148,16 @@ public:
return *this;
}
CallLoweringInfo &setCallee(CallingConv::ID CC, Type *ResultTy,
CallLoweringInfo &setCallee(const DataLayout &DL, MCContext &Ctx,
CallingConv::ID CC, Type *ResultTy,
const char *Target, ArgListTy &&ArgsList,
unsigned FixedArgs = ~0U);
CallLoweringInfo &setCallee(CallingConv::ID CC, Type *ResultTy,
MCSymbol *Target, ArgListTy &&ArgsList,
unsigned FixedArgs = ~0U) {
RetTy = ResultTy;
SymName = Target;
Symbol = Target;
CallConv = CC;
Args = std::move(ArgsList);
NumFixedArgs = (FixedArgs == ~0U) ? Args.size() : FixedArgs;
@@ -504,7 +509,9 @@ protected:
CmpInst::Predicate optimizeCmpPredicate(const CmpInst *CI) const;
bool lowerCallTo(const CallInst *CI, const char *SymName, unsigned NumArgs);
bool lowerCallTo(const CallInst *CI, MCSymbol *Symbol, unsigned NumArgs);
bool lowerCallTo(const CallInst *CI, const char *SymbolName,
unsigned NumArgs);
bool lowerCallTo(CallLoweringInfo &CLI);
bool isCommutativeIntrinsic(IntrinsicInst const *II) {

5
include/llvm/CodeGen/MachineInstrBuilder.h
View File

@@ -185,8 +185,9 @@ public:
return *this;
}
const MachineInstrBuilder &addSym(MCSymbol *Sym) const {
MI->addOperand(*MF, MachineOperand::CreateMCSymbol(Sym));
const MachineInstrBuilder &addSym(MCSymbol *Sym,
unsigned char TargetFlags = 0) const {
MI->addOperand(*MF, MachineOperand::CreateMCSymbol(Sym, TargetFlags));
return *this;
}

4
include/llvm/CodeGen/MachineOperand.h
View File

@@ -705,10 +705,12 @@ public:
return Op;
}
static MachineOperand CreateMCSymbol(MCSymbol *Sym) {
static MachineOperand CreateMCSymbol(MCSymbol *Sym,
unsigned char TargetFlags = 0) {
MachineOperand Op(MachineOperand::MO_MCSymbol);
Op.Contents.Sym = Sym;
Op.setOffset(0);
Op.setTargetFlags(TargetFlags);
return Op;
}

4
include/llvm/IR/Mangler.h
View File

@@ -51,6 +51,10 @@ public:
/// Print the appropriate prefix and the specified global variable's name.
/// If the global variable doesn't have a name, this fills in a unique name
/// for the global.
static void getNameWithPrefix(SmallVectorImpl<char> &OutName,
const Twine &GVName, const DataLayout &DL);
void getNameWithPrefix(raw_ostream &OS, const GlobalValue *GV,
bool CannotUsePrivateLabel) const;
void getNameWithPrefix(SmallVectorImpl<char> &OutName, const GlobalValue *GV,