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Make sure sin, cos, sqrt calls are marked readonly

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before producing FSIN, FCOS, FSQRT.  If they aren't
so marked we have to assume they might set errno.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82781 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen 2009-09-25 18:00:35 +00:00
parent 94638f0081
commit a45bfd31de
1 changed files with 6 additions and 3 deletions
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9
lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
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@ -4561,7 +4561,8 @@ void SelectionDAGLowering::visitCall(CallInst &I) {
} else if (Name == "sin" || Name == "sinf" || Name == "sinl") { } else if (Name == "sin" || Name == "sinf" || Name == "sinl") {
if (I.getNumOperands() == 2 && // Basic sanity checks. if (I.getNumOperands() == 2 && // Basic sanity checks.
I.getOperand(1)->getType()->isFloatingPoint() && I.getOperand(1)->getType()->isFloatingPoint() &&
I.getType() == I.getOperand(1)->getType()) { I.getType() == I.getOperand(1)->getType() &&
I.onlyReadsMemory()) {
SDValue Tmp = getValue(I.getOperand(1)); SDValue Tmp = getValue(I.getOperand(1));
setValue(&I, DAG.getNode(ISD::FSIN, getCurDebugLoc(), setValue(&I, DAG.getNode(ISD::FSIN, getCurDebugLoc(),
Tmp.getValueType(), Tmp)); Tmp.getValueType(), Tmp));
@ -4570,7 +4571,8 @@ void SelectionDAGLowering::visitCall(CallInst &I) {
} else if (Name == "cos" || Name == "cosf" || Name == "cosl") { } else if (Name == "cos" || Name == "cosf" || Name == "cosl") {
if (I.getNumOperands() == 2 && // Basic sanity checks. if (I.getNumOperands() == 2 && // Basic sanity checks.
I.getOperand(1)->getType()->isFloatingPoint() && I.getOperand(1)->getType()->isFloatingPoint() &&
I.getType() == I.getOperand(1)->getType()) { I.getType() == I.getOperand(1)->getType() &&
I.onlyReadsMemory()) {
SDValue Tmp = getValue(I.getOperand(1)); SDValue Tmp = getValue(I.getOperand(1));
setValue(&I, DAG.getNode(ISD::FCOS, getCurDebugLoc(), setValue(&I, DAG.getNode(ISD::FCOS, getCurDebugLoc(),
Tmp.getValueType(), Tmp)); Tmp.getValueType(), Tmp));
@ -4579,7 +4581,8 @@ void SelectionDAGLowering::visitCall(CallInst &I) {
} else if (Name == "sqrt" || Name == "sqrtf" || Name == "sqrtl") { } else if (Name == "sqrt" || Name == "sqrtf" || Name == "sqrtl") {
if (I.getNumOperands() == 2 && // Basic sanity checks. if (I.getNumOperands() == 2 && // Basic sanity checks.
I.getOperand(1)->getType()->isFloatingPoint() && I.getOperand(1)->getType()->isFloatingPoint() &&
I.getType() == I.getOperand(1)->getType()) { I.getType() == I.getOperand(1)->getType() &&
I.onlyReadsMemory()) {
SDValue Tmp = getValue(I.getOperand(1)); SDValue Tmp = getValue(I.getOperand(1));
setValue(&I, DAG.getNode(ISD::FSQRT, getCurDebugLoc(), setValue(&I, DAG.getNode(ISD::FSQRT, getCurDebugLoc(),
Tmp.getValueType(), Tmp)); Tmp.getValueType(), Tmp));