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* Use a map for caching lookups to external functions (fp div/rem)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14673 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman 2004-07-07 20:07:22 +00:00
parent e62cd37c2a
commit 2834a4dd1d
2 changed files with 56 additions and 40 deletions
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30
lib/Target/PowerPC/PPC32ISelSimple.cpp
View File

@ -49,7 +49,7 @@ static inline TypeClass getClass(const Type *Ty) {
case Type::UShortTyID: return cShort; // Short operands are class #1
case Type::IntTyID:
case Type::UIntTyID:
case Type::PointerTyID: return cInt; // Int's and pointers are class #2
case Type::PointerTyID: return cInt; // Ints and pointers are class #2
case Type::FloatTyID:
case Type::DoubleTyID: return cFP; // Floating Point is #3
@ -72,13 +72,15 @@ namespace {
struct ISel : public FunctionPass, InstVisitor<ISel> {
TargetMachine &TM;
MachineFunction *F; // The function we are compiling into
Module *M; // Current module
MachineBasicBlock *BB; // The current MBB we are compiling
int VarArgsFrameIndex; // FrameIndex for start of varargs area
int ReturnAddressIndex; // FrameIndex for the return address
std::map<Value*, unsigned> RegMap; // Mapping between Val's and SSA Regs
// External functions used in the Module
std::map<std::string, Function*> Func;
// MBBMap - Mapping between LLVM BB -> Machine BB
std::map<const BasicBlock*, MachineBasicBlock*> MBBMap;
@ -88,13 +90,21 @@ namespace {
ISel(TargetMachine &tm) : TM(tm), F(0), BB(0) {}
bool doInitialization(Module &Mod) {
M = &Mod;
bool doInitialization(Module &M) {
// Add external functions that we may call
Type *d = Type::DoubleTy;
Type *l = Type::LongTy;
Type *ul = Type::ULongTy;
// double fmod(double, double);
Mod.getOrInsertFunction("fmod", d, d, d, 0);
// { "__moddi3", "__divdi3", "__umoddi3", "__udivdi3" };
Func["fmod"] = M.getOrInsertFunction("fmod", d, d, d, 0);
// long __moddi3(long, long);
Func["__moddi3"] = M.getOrInsertFunction("__moddi3", l, l, l, 0);
// long __divdi3(long, long);
Func["__divdi3"] = M.getOrInsertFunction("__divdi3", l, l, l, 0);
// unsigned long __umoddi3(unsigned long, unsigned long);
Func["__umoddi3"] = M.getOrInsertFunction("__umoddi3", ul, ul, ul, 0);
// unsigned long __udivdi3(unsigned long, unsigned long);
Func["__udivdi3"] = M.getOrInsertFunction("__udivdi3", ul, ul, ul, 0);
return false;
}
@ -1949,10 +1959,8 @@ void ISel::emitDivRemOperation(MachineBasicBlock *BB,
} else { // Floating point remainder...
unsigned Op0Reg = getReg(Op0, BB, IP);
unsigned Op1Reg = getReg(Op1, BB, IP);
Function *FmodFn = M->getNamedFunction("fmod");
assert(FmodFn && "fmod() does not exist in the module");
MachineInstr *TheCall =
BuildMI(PPC32::CALLpcrel, 1).addGlobalAddress(FmodFn, true);
BuildMI(PPC32::CALLpcrel, 1).addGlobalAddress(Func["fmod"], true);
std::vector<ValueRecord> Args;
Args.push_back(ValueRecord(Op0Reg, Type::DoubleTy));
Args.push_back(ValueRecord(Op1Reg, Type::DoubleTy));
@ -1961,13 +1969,13 @@ void ISel::emitDivRemOperation(MachineBasicBlock *BB,
return;
case cLong: {
// FIXME: Make sure the module has external function
static const char *FnName[] =
static const char *Fn[] =
{ "__moddi3", "__divdi3", "__umoddi3", "__udivdi3" };
unsigned Op0Reg = getReg(Op0, BB, IP);
unsigned Op1Reg = getReg(Op1, BB, IP);
unsigned NameIdx = Ty->isUnsigned()*2 + isDiv;
MachineInstr *TheCall =
BuildMI(PPC32::CALLpcrel, 1).addExternalSymbol(FnName[NameIdx], true);
BuildMI(PPC32::CALLpcrel, 1).addGlobalAddress(Func[Fn[NameIdx]], true);
std::vector<ValueRecord> Args;
Args.push_back(ValueRecord(Op0Reg, Type::LongTy));

30
lib/Target/PowerPC/PowerPCISelSimple.cpp
View File

@ -49,7 +49,7 @@ static inline TypeClass getClass(const Type *Ty) {
case Type::UShortTyID: return cShort; // Short operands are class #1
case Type::IntTyID:
case Type::UIntTyID:
case Type::PointerTyID: return cInt; // Int's and pointers are class #2
case Type::PointerTyID: return cInt; // Ints and pointers are class #2
case Type::FloatTyID:
case Type::DoubleTyID: return cFP; // Floating Point is #3
@ -72,13 +72,15 @@ namespace {
struct ISel : public FunctionPass, InstVisitor<ISel> {
TargetMachine &TM;
MachineFunction *F; // The function we are compiling into
Module *M; // Current module
MachineBasicBlock *BB; // The current MBB we are compiling
int VarArgsFrameIndex; // FrameIndex for start of varargs area
int ReturnAddressIndex; // FrameIndex for the return address
std::map<Value*, unsigned> RegMap; // Mapping between Val's and SSA Regs
// External functions used in the Module
std::map<std::string, Function*> Func;
// MBBMap - Mapping between LLVM BB -> Machine BB
std::map<const BasicBlock*, MachineBasicBlock*> MBBMap;
@ -88,13 +90,21 @@ namespace {
ISel(TargetMachine &tm) : TM(tm), F(0), BB(0) {}
bool doInitialization(Module &Mod) {
M = &Mod;
bool doInitialization(Module &M) {
// Add external functions that we may call
Type *d = Type::DoubleTy;
Type *l = Type::LongTy;
Type *ul = Type::ULongTy;
// double fmod(double, double);
Mod.getOrInsertFunction("fmod", d, d, d, 0);
// { "__moddi3", "__divdi3", "__umoddi3", "__udivdi3" };
Func["fmod"] = M.getOrInsertFunction("fmod", d, d, d, 0);
// long __moddi3(long, long);
Func["__moddi3"] = M.getOrInsertFunction("__moddi3", l, l, l, 0);
// long __divdi3(long, long);
Func["__divdi3"] = M.getOrInsertFunction("__divdi3", l, l, l, 0);
// unsigned long __umoddi3(unsigned long, unsigned long);
Func["__umoddi3"] = M.getOrInsertFunction("__umoddi3", ul, ul, ul, 0);
// unsigned long __udivdi3(unsigned long, unsigned long);
Func["__udivdi3"] = M.getOrInsertFunction("__udivdi3", ul, ul, ul, 0);
return false;
}
@ -1949,10 +1959,8 @@ void ISel::emitDivRemOperation(MachineBasicBlock *BB,
} else { // Floating point remainder...
unsigned Op0Reg = getReg(Op0, BB, IP);
unsigned Op1Reg = getReg(Op1, BB, IP);
Function *FmodFn = M->getNamedFunction("fmod");
assert(FmodFn && "fmod() does not exist in the module");
MachineInstr *TheCall =
BuildMI(PPC32::CALLpcrel, 1).addGlobalAddress(FmodFn, true);
BuildMI(PPC32::CALLpcrel, 1).addGlobalAddress(Func["fmod"], true);
std::vector<ValueRecord> Args;
Args.push_back(ValueRecord(Op0Reg, Type::DoubleTy));
Args.push_back(ValueRecord(Op1Reg, Type::DoubleTy));
@ -1961,13 +1969,13 @@ void ISel::emitDivRemOperation(MachineBasicBlock *BB,
return;
case cLong: {
// FIXME: Make sure the module has external function
static const char *FnName[] =
static const char *Fn[] =
{ "__moddi3", "__divdi3", "__umoddi3", "__udivdi3" };
unsigned Op0Reg = getReg(Op0, BB, IP);
unsigned Op1Reg = getReg(Op1, BB, IP);
unsigned NameIdx = Ty->isUnsigned()*2 + isDiv;
MachineInstr *TheCall =
BuildMI(PPC32::CALLpcrel, 1).addExternalSymbol(FnName[NameIdx], true);
BuildMI(PPC32::CALLpcrel, 1).addGlobalAddress(Func[Fn[NameIdx]], true);
std::vector<ValueRecord> Args;
Args.push_back(ValueRecord(Op0Reg, Type::LongTy));