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Add support for llvm.sqrt and sin/cos if unsafe math optimizations are enabled. 

llvm-svn: 21631
This commit is contained in:
Chris Lattner 2005-04-30 04:12:40 +00:00
parent 4a2cc6603d
commit 3b20386551
1 changed files with 27 additions and 0 deletions
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27
llvm/lib/Target/X86/X86ISelSimple.cpp
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@ -26,6 +26,7 @@
#include "llvm/CodeGen/SSARegMap.h" #include "llvm/CodeGen/SSARegMap.h"
#include "llvm/Target/MRegisterInfo.h" #include "llvm/Target/MRegisterInfo.h"
#include "llvm/Target/TargetMachine.h" #include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/GetElementPtrTypeIterator.h" #include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/Support/InstVisitor.h" #include "llvm/Support/InstVisitor.h"
#include "llvm/ADT/Statistic.h" #include "llvm/ADT/Statistic.h"
@ -1744,6 +1745,25 @@ void X86ISel::visitCallInst(CallInst &CI) {
BuildMI(BB, X86::FABS, 1, DestReg).addReg(op1Reg); BuildMI(BB, X86::FABS, 1, DestReg).addReg(op1Reg);
return; return;
} }
} else if (F->getName() == "sin" && UnsafeFPMath || F->getName() == "sinf") {
if (CI.getNumOperands() == 2 && // Basic sanity checks.
CI.getOperand(1)->getType()->isFloatingPoint() &&
CI.getType() == CI.getOperand(1)->getType()) {
unsigned op1Reg = getReg(CI.getOperand(1));
unsigned DestReg = getReg(CI);
BuildMI(BB, X86::FSIN, 1, DestReg).addReg(op1Reg);
return;
}
}
else if (F->getName() == "cos" && UnsafeFPMath || F->getName() == "cosf") {
if (CI.getNumOperands() == 2 && // Basic sanity checks.
CI.getOperand(1)->getType()->isFloatingPoint() &&
CI.getType() == CI.getOperand(1)->getType()) {
unsigned op1Reg = getReg(CI.getOperand(1));
unsigned DestReg = getReg(CI);
BuildMI(BB, X86::FCOS, 1, DestReg).addReg(op1Reg);
return;
}
} }
// Emit a CALL instruction with PC-relative displacement. // Emit a CALL instruction with PC-relative displacement.
@ -1780,6 +1800,7 @@ void X86ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
case Intrinsic::memcpy: case Intrinsic::memcpy:
case Intrinsic::memset: case Intrinsic::memset:
case Intrinsic::isunordered: case Intrinsic::isunordered:
case Intrinsic::sqrt:
case Intrinsic::readport: case Intrinsic::readport:
case Intrinsic::writeport: case Intrinsic::writeport:
// We directly implement these intrinsics // We directly implement these intrinsics
@ -1860,6 +1881,12 @@ void X86ISel::visitIntrinsicCall(Intrinsic::ID ID, CallInst &CI) {
BuildMI(BB, X86::SETPr, 0, TmpReg2); BuildMI(BB, X86::SETPr, 0, TmpReg2);
return; return;
case Intrinsic::sqrt:
TmpReg1 = getReg(CI.getOperand(1));
TmpReg2 = getReg(CI);
BuildMI(BB, X86::FSQRT, 1, TmpReg2).addReg(TmpReg1);
return;
case Intrinsic::memcpy: { case Intrinsic::memcpy: {
assert(CI.getNumOperands() == 5 && "Illegal llvm.memcpy call!"); assert(CI.getNumOperands() == 5 && "Illegal llvm.memcpy call!");
unsigned Align = 1; unsigned Align = 1;