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Remove support for llvm.isnan. Alkis wins :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14189 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
parent
85a14bb586
commit
4adf066f99
@ -1619,32 +1619,6 @@ void ISel::visitCallInst(CallInst &CI) {
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doCall(ValueRecord(DestReg, CI.getType()), TheCall, Args);
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doCall(ValueRecord(DestReg, CI.getType()), TheCall, Args);
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}
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}
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/// dyncastIsNan - Return the operand of an isnan operation if this is an isnan.
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///
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static Value *dyncastIsNan(Value *V) {
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if (CallInst *CI = dyn_cast<CallInst>(V))
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if (Function *F = CI->getCalledFunction())
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if (F->getIntrinsicID() == Intrinsic::isnan)
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return CI->getOperand(1);
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return 0;
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}
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/// isOnlyUsedByUnorderedComparisons - Return true if this value is only used by
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/// or's whos operands are all calls to the isnan predicate.
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static bool isOnlyUsedByUnorderedComparisons(Value *V) {
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assert(dyncastIsNan(V) && "The value isn't an isnan call!");
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// Check all uses, which will be or's of isnans if this predicate is true.
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for (Value::use_iterator UI = V->use_begin(), E = V->use_end(); UI != E;++UI){
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Instruction *I = cast<Instruction>(*UI);
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if (I->getOpcode() != Instruction::Or) return false;
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if (I->getOperand(0) != V && !dyncastIsNan(I->getOperand(0))) return false;
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if (I->getOperand(1) != V && !dyncastIsNan(I->getOperand(1))) return false;
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}
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return true;
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}
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/// LowerUnknownIntrinsicFunctionCalls - This performs a prepass over the
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/// LowerUnknownIntrinsicFunctionCalls - This performs a prepass over the
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/// function, lowering any calls to unknown intrinsic functions into the
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/// function, lowering any calls to unknown intrinsic functions into the
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/// equivalent LLVM code.
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/// equivalent LLVM code.
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@ -1663,7 +1637,6 @@ void ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
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case Intrinsic::frameaddress:
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case Intrinsic::frameaddress:
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case Intrinsic::memcpy:
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case Intrinsic::memcpy:
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case Intrinsic::memset:
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case Intrinsic::memset:
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case Intrinsic::isnan:
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case Intrinsic::isunordered:
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case Intrinsic::isunordered:
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case Intrinsic::readport:
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case Intrinsic::readport:
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case Intrinsic::writeport:
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case Intrinsic::writeport:
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@ -1734,15 +1707,6 @@ void ISel::visitIntrinsicCall(Intrinsic::ID ID, CallInst &CI) {
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}
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}
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return;
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return;
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case Intrinsic::isnan:
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// If this is only used by 'isunordered' style comparisons, don't emit it.
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if (isOnlyUsedByUnorderedComparisons(&CI)) return;
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TmpReg1 = getReg(CI.getOperand(1));
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emitUCOMr(BB, BB->end(), TmpReg1, TmpReg1);
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TmpReg2 = getReg(CI);
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BuildMI(BB, X86::SETPr, 0, TmpReg2);
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return;
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case Intrinsic::isunordered:
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case Intrinsic::isunordered:
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TmpReg1 = getReg(CI.getOperand(1));
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TmpReg1 = getReg(CI.getOperand(1));
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TmpReg2 = getReg(CI.getOperand(2));
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TmpReg2 = getReg(CI.getOperand(2));
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@ -2162,20 +2126,6 @@ void ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
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return;
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return;
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}
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}
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if (Op0->getType() == Type::BoolTy) {
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if (OperatorClass == 3)
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// If this is an or of two isnan's, emit an FP comparison directly instead
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// of or'ing two isnan's together.
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if (Value *LHS = dyncastIsNan(Op0))
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if (Value *RHS = dyncastIsNan(Op1)) {
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unsigned Op0Reg = getReg(RHS, MBB, IP), Op1Reg = getReg(LHS, MBB, IP);
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emitUCOMr(MBB, IP, Op0Reg, Op1Reg);
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BuildMI(*MBB, IP, X86::SETPr, 0, DestReg);
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return;
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}
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}
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// sub 0, X -> neg X
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// sub 0, X -> neg X
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if (ConstantInt *CI = dyn_cast<ConstantInt>(Op0))
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if (ConstantInt *CI = dyn_cast<ConstantInt>(Op0))
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if (OperatorClass == 1 && CI->isNullValue()) {
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if (OperatorClass == 1 && CI->isNullValue()) {
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@ -1619,32 +1619,6 @@ void ISel::visitCallInst(CallInst &CI) {
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doCall(ValueRecord(DestReg, CI.getType()), TheCall, Args);
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doCall(ValueRecord(DestReg, CI.getType()), TheCall, Args);
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}
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}
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/// dyncastIsNan - Return the operand of an isnan operation if this is an isnan.
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///
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static Value *dyncastIsNan(Value *V) {
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if (CallInst *CI = dyn_cast<CallInst>(V))
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if (Function *F = CI->getCalledFunction())
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if (F->getIntrinsicID() == Intrinsic::isnan)
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return CI->getOperand(1);
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return 0;
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}
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/// isOnlyUsedByUnorderedComparisons - Return true if this value is only used by
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/// or's whos operands are all calls to the isnan predicate.
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static bool isOnlyUsedByUnorderedComparisons(Value *V) {
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assert(dyncastIsNan(V) && "The value isn't an isnan call!");
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// Check all uses, which will be or's of isnans if this predicate is true.
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for (Value::use_iterator UI = V->use_begin(), E = V->use_end(); UI != E;++UI){
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Instruction *I = cast<Instruction>(*UI);
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if (I->getOpcode() != Instruction::Or) return false;
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if (I->getOperand(0) != V && !dyncastIsNan(I->getOperand(0))) return false;
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if (I->getOperand(1) != V && !dyncastIsNan(I->getOperand(1))) return false;
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}
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return true;
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}
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/// LowerUnknownIntrinsicFunctionCalls - This performs a prepass over the
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/// LowerUnknownIntrinsicFunctionCalls - This performs a prepass over the
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/// function, lowering any calls to unknown intrinsic functions into the
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/// function, lowering any calls to unknown intrinsic functions into the
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/// equivalent LLVM code.
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/// equivalent LLVM code.
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@ -1663,7 +1637,6 @@ void ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
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case Intrinsic::frameaddress:
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case Intrinsic::frameaddress:
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case Intrinsic::memcpy:
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case Intrinsic::memcpy:
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case Intrinsic::memset:
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case Intrinsic::memset:
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case Intrinsic::isnan:
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case Intrinsic::isunordered:
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case Intrinsic::isunordered:
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case Intrinsic::readport:
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case Intrinsic::readport:
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case Intrinsic::writeport:
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case Intrinsic::writeport:
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@ -1734,15 +1707,6 @@ void ISel::visitIntrinsicCall(Intrinsic::ID ID, CallInst &CI) {
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}
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}
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return;
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return;
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case Intrinsic::isnan:
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// If this is only used by 'isunordered' style comparisons, don't emit it.
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if (isOnlyUsedByUnorderedComparisons(&CI)) return;
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TmpReg1 = getReg(CI.getOperand(1));
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emitUCOMr(BB, BB->end(), TmpReg1, TmpReg1);
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TmpReg2 = getReg(CI);
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BuildMI(BB, X86::SETPr, 0, TmpReg2);
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return;
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case Intrinsic::isunordered:
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case Intrinsic::isunordered:
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TmpReg1 = getReg(CI.getOperand(1));
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TmpReg1 = getReg(CI.getOperand(1));
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TmpReg2 = getReg(CI.getOperand(2));
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TmpReg2 = getReg(CI.getOperand(2));
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@ -2162,20 +2126,6 @@ void ISel::emitSimpleBinaryOperation(MachineBasicBlock *MBB,
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return;
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return;
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}
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}
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if (Op0->getType() == Type::BoolTy) {
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if (OperatorClass == 3)
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// If this is an or of two isnan's, emit an FP comparison directly instead
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// of or'ing two isnan's together.
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if (Value *LHS = dyncastIsNan(Op0))
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if (Value *RHS = dyncastIsNan(Op1)) {
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unsigned Op0Reg = getReg(RHS, MBB, IP), Op1Reg = getReg(LHS, MBB, IP);
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emitUCOMr(MBB, IP, Op0Reg, Op1Reg);
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BuildMI(*MBB, IP, X86::SETPr, 0, DestReg);
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return;
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}
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}
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// sub 0, X -> neg X
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// sub 0, X -> neg X
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if (ConstantInt *CI = dyn_cast<ConstantInt>(Op0))
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if (ConstantInt *CI = dyn_cast<ConstantInt>(Op0))
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if (OperatorClass == 1 && CI->isNullValue()) {
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if (OperatorClass == 1 && CI->isNullValue()) {
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