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Remove support for llvm.isnan. Alkis wins :)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14189 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-06-15 21:48:07 +00:00
parent 85a14bb586
commit 4adf066f99
2 changed files with 0 additions and 100 deletions
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50
lib/Target/X86/InstSelectSimple.cpp
View File

@ -1619,32 +1619,6 @@ void ISel::visitCallInst(CallInst &CI) {
doCall(ValueRecord(DestReg, CI.getType()), TheCall, Args);
}
/// dyncastIsNan - Return the operand of an isnan operation if this is an isnan.
///
static Value *dyncastIsNan(Value *V) {
if (CallInst *CI = dyn_cast<CallInst>(V))
if (Function *F = CI->getCalledFunction())
if (F->getIntrinsicID() == Intrinsic::isnan)
return CI->getOperand(1);
return 0;
}
/// isOnlyUsedByUnorderedComparisons - Return true if this value is only used by
/// or's whos operands are all calls to the isnan predicate.
static bool isOnlyUsedByUnorderedComparisons(Value *V) {
assert(dyncastIsNan(V) && "The value isn't an isnan call!");
// Check all uses, which will be or's of isnans if this predicate is true.
for (Value::use_iterator UI = V->use_begin(), E = V->use_end(); UI != E;++UI){
Instruction *I = cast<Instruction>(*UI);
if (I->getOpcode() != Instruction::Or) return false;
if (I->getOperand(0) != V && !dyncastIsNan(I->getOperand(0))) return false;
if (I->getOperand(1) != V && !dyncastIsNan(I->getOperand(1))) return false;
}
return true;
}
/// LowerUnknownIntrinsicFunctionCalls - This performs a prepass over the
/// function, lowering any calls to unknown intrinsic functions into the
/// equivalent LLVM code.
@ -1663,7 +1637,6 @@ void ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
case Intrinsic::frameaddress:
case Intrinsic::memcpy:
case Intrinsic::memset:
case Intrinsic::isnan:
case Intrinsic::isunordered:
case Intrinsic::readport:
case Intrinsic::writeport:
@ -1734,15 +1707,6 @@ void ISel::visitIntrinsicCall(Intrinsic::ID ID, CallInst &CI) {
}
return;
case Intrinsic::isnan:
// If this is only used by 'isunordered' style comparisons, don't emit it.
if (isOnlyUsedByUnorderedComparisons(&CI)) return;
TmpReg1 = getReg(CI.getOperand(1));
emitUCOMr(BB, BB->end(), TmpReg1, TmpReg1);
TmpReg2 = getReg(CI);
BuildMI(BB, X86::SETPr, 0, TmpReg2);
return;
case Intrinsic::isunordered:
TmpReg1 = getReg(CI.getOperand(1));
TmpReg2 = getReg(CI.getOperand(2));
@ -2162,20 +2126,6 @@ void ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
return;
}
if (Op0->getType() == Type::BoolTy) {
if (OperatorClass == 3)
// If this is an or of two isnan's, emit an FP comparison directly instead
// of or'ing two isnan's together.
if (Value *LHS = dyncastIsNan(Op0))
if (Value *RHS = dyncastIsNan(Op1)) {
unsigned Op0Reg = getReg(RHS, MBB, IP), Op1Reg = getReg(LHS, MBB, IP);
emitUCOMr(MBB, IP, Op0Reg, Op1Reg);
BuildMI(*MBB, IP, X86::SETPr, 0, DestReg);
return;
}
}
// sub 0, X -> neg X
if (ConstantInt *CI = dyn_cast<ConstantInt>(Op0))
if (OperatorClass == 1 && CI->isNullValue()) {

50
lib/Target/X86/X86ISelSimple.cpp
View File

@ -1619,32 +1619,6 @@ void ISel::visitCallInst(CallInst &CI) {
doCall(ValueRecord(DestReg, CI.getType()), TheCall, Args);
}
/// dyncastIsNan - Return the operand of an isnan operation if this is an isnan.
///
static Value *dyncastIsNan(Value *V) {
if (CallInst *CI = dyn_cast<CallInst>(V))
if (Function *F = CI->getCalledFunction())
if (F->getIntrinsicID() == Intrinsic::isnan)
return CI->getOperand(1);
return 0;
}
/// isOnlyUsedByUnorderedComparisons - Return true if this value is only used by
/// or's whos operands are all calls to the isnan predicate.
static bool isOnlyUsedByUnorderedComparisons(Value *V) {
assert(dyncastIsNan(V) && "The value isn't an isnan call!");
// Check all uses, which will be or's of isnans if this predicate is true.
for (Value::use_iterator UI = V->use_begin(), E = V->use_end(); UI != E;++UI){
Instruction *I = cast<Instruction>(*UI);
if (I->getOpcode() != Instruction::Or) return false;
if (I->getOperand(0) != V && !dyncastIsNan(I->getOperand(0))) return false;
if (I->getOperand(1) != V && !dyncastIsNan(I->getOperand(1))) return false;
}
return true;
}
/// LowerUnknownIntrinsicFunctionCalls - This performs a prepass over the
/// function, lowering any calls to unknown intrinsic functions into the
/// equivalent LLVM code.
@ -1663,7 +1637,6 @@ void ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
case Intrinsic::frameaddress:
case Intrinsic::memcpy:
case Intrinsic::memset:
case Intrinsic::isnan:
case Intrinsic::isunordered:
case Intrinsic::readport:
case Intrinsic::writeport:
@ -1734,15 +1707,6 @@ void ISel::visitIntrinsicCall(Intrinsic::ID ID, CallInst &CI) {
}
return;
case Intrinsic::isnan:
// If this is only used by 'isunordered' style comparisons, don't emit it.
if (isOnlyUsedByUnorderedComparisons(&CI)) return;
TmpReg1 = getReg(CI.getOperand(1));
emitUCOMr(BB, BB->end(), TmpReg1, TmpReg1);
TmpReg2 = getReg(CI);
BuildMI(BB, X86::SETPr, 0, TmpReg2);
return;
case Intrinsic::isunordered:
TmpReg1 = getReg(CI.getOperand(1));
TmpReg2 = getReg(CI.getOperand(2));
@ -2162,20 +2126,6 @@ void ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
return;
}
if (Op0->getType() == Type::BoolTy) {
if (OperatorClass == 3)
// If this is an or of two isnan's, emit an FP comparison directly instead
// of or'ing two isnan's together.
if (Value *LHS = dyncastIsNan(Op0))
if (Value *RHS = dyncastIsNan(Op1)) {
unsigned Op0Reg = getReg(RHS, MBB, IP), Op1Reg = getReg(LHS, MBB, IP);
emitUCOMr(MBB, IP, Op0Reg, Op1Reg);
BuildMI(*MBB, IP, X86::SETPr, 0, DestReg);
return;
}
}
// sub 0, X -> neg X
if (ConstantInt *CI = dyn_cast<ConstantInt>(Op0))
if (OperatorClass == 1 && CI->isNullValue()) {