Add support for llvm.sqrt and sin/cos if unsafe math optimizations are enabled.
llvm-svn: 21631
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4a2cc6603d
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3b20386551
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@ -26,6 +26,7 @@
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#include "llvm/CodeGen/SSARegMap.h"
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#include "llvm/CodeGen/SSARegMap.h"
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#include "llvm/Target/MRegisterInfo.h"
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#include "llvm/Target/MRegisterInfo.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/Support/GetElementPtrTypeIterator.h"
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#include "llvm/Support/GetElementPtrTypeIterator.h"
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#include "llvm/Support/InstVisitor.h"
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#include "llvm/Support/InstVisitor.h"
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#include "llvm/ADT/Statistic.h"
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#include "llvm/ADT/Statistic.h"
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@ -1744,6 +1745,25 @@ void X86ISel::visitCallInst(CallInst &CI) {
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BuildMI(BB, X86::FABS, 1, DestReg).addReg(op1Reg);
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BuildMI(BB, X86::FABS, 1, DestReg).addReg(op1Reg);
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return;
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return;
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}
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}
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} else if (F->getName() == "sin" && UnsafeFPMath || F->getName() == "sinf") {
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if (CI.getNumOperands() == 2 && // Basic sanity checks.
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CI.getOperand(1)->getType()->isFloatingPoint() &&
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CI.getType() == CI.getOperand(1)->getType()) {
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unsigned op1Reg = getReg(CI.getOperand(1));
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unsigned DestReg = getReg(CI);
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BuildMI(BB, X86::FSIN, 1, DestReg).addReg(op1Reg);
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return;
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}
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}
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else if (F->getName() == "cos" && UnsafeFPMath || F->getName() == "cosf") {
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if (CI.getNumOperands() == 2 && // Basic sanity checks.
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CI.getOperand(1)->getType()->isFloatingPoint() &&
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CI.getType() == CI.getOperand(1)->getType()) {
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unsigned op1Reg = getReg(CI.getOperand(1));
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unsigned DestReg = getReg(CI);
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BuildMI(BB, X86::FCOS, 1, DestReg).addReg(op1Reg);
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return;
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}
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}
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}
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// Emit a CALL instruction with PC-relative displacement.
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// Emit a CALL instruction with PC-relative displacement.
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@ -1780,6 +1800,7 @@ void X86ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
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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::isunordered:
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case Intrinsic::isunordered:
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case Intrinsic::sqrt:
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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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// We directly implement these intrinsics
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// We directly implement these intrinsics
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@ -1860,6 +1881,12 @@ void X86ISel::visitIntrinsicCall(Intrinsic::ID ID, CallInst &CI) {
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BuildMI(BB, X86::SETPr, 0, TmpReg2);
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BuildMI(BB, X86::SETPr, 0, TmpReg2);
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return;
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return;
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case Intrinsic::sqrt:
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TmpReg1 = getReg(CI.getOperand(1));
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TmpReg2 = getReg(CI);
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BuildMI(BB, X86::FSQRT, 1, TmpReg2).addReg(TmpReg1);
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return;
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case Intrinsic::memcpy: {
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case Intrinsic::memcpy: {
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assert(CI.getNumOperands() == 5 && "Illegal llvm.memcpy call!");
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assert(CI.getNumOperands() == 5 && "Illegal llvm.memcpy call!");
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unsigned Align = 1;
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unsigned Align = 1;
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