Expose isXxxConstant() functions from SelectionDAGNodes.h (NFC)
Summary:
Many target lowerings copy-paste the code to test SDValues for known constants.
This code can instead be shared in SelectionDAG.cpp, and reused in the targets.
Reviewers: MatzeB, andreadb, tstellarAMD
Subscribers: arsenm, jyknight, llvm-commits
Differential Revision: http://reviews.llvm.org/D14945
llvm-svn: 254085
diff --git a/llvm/lib/Target/Sparc/SparcISelLowering.cpp b/llvm/lib/Target/Sparc/SparcISelLowering.cpp
index c496a3c..799fe00 100644
--- a/llvm/lib/Target/Sparc/SparcISelLowering.cpp
+++ b/llvm/lib/Target/Sparc/SparcISelLowering.cpp
@@ -1836,18 +1836,15 @@
// set LHS/RHS and SPCC to the LHS/RHS of the setcc and SPCC to the condition.
static void LookThroughSetCC(SDValue &LHS, SDValue &RHS,
ISD::CondCode CC, unsigned &SPCC) {
- if (isa<ConstantSDNode>(RHS) &&
- cast<ConstantSDNode>(RHS)->isNullValue() &&
+ if (isNullConstant(RHS) &&
CC == ISD::SETNE &&
(((LHS.getOpcode() == SPISD::SELECT_ICC ||
LHS.getOpcode() == SPISD::SELECT_XCC) &&
LHS.getOperand(3).getOpcode() == SPISD::CMPICC) ||
(LHS.getOpcode() == SPISD::SELECT_FCC &&
LHS.getOperand(3).getOpcode() == SPISD::CMPFCC)) &&
- isa<ConstantSDNode>(LHS.getOperand(0)) &&
- isa<ConstantSDNode>(LHS.getOperand(1)) &&
- cast<ConstantSDNode>(LHS.getOperand(0))->isOne() &&
- cast<ConstantSDNode>(LHS.getOperand(1))->isNullValue()) {
+ isOneConstant(LHS.getOperand(0)) &&
+ isNullConstant(LHS.getOperand(1))) {
SDValue CMPCC = LHS.getOperand(3);
SPCC = cast<ConstantSDNode>(LHS.getOperand(2))->getZExtValue();
LHS = CMPCC.getOperand(0);