Fix a couple of minor bugs. The first fixes povray, the second fixes things
if the dag combiner isn't run
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23981 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index 336c2b1..7b3227d 100644
--- a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -898,8 +898,11 @@
Tmp = CurDAG->getTargetNode(PPC::ADDIS, MVT::i32, getGlobalBaseReg(),CPI);
else
Tmp = CurDAG->getTargetNode(PPC::LIS, MVT::i32, CPI);
- CurDAG->SelectNodeTo(N, PPC::LA, MVT::i32, Tmp, CPI);
- return SDOperand(N, 0);
+ if (N->hasOneUse()) {
+ CurDAG->SelectNodeTo(N, PPC::LA, MVT::i32, Tmp, CPI);
+ return SDOperand(N, 0);
+ }
+ return CurDAG->getTargetNode(PPC::LA, MVT::i32, Tmp, CPI);
}
case ISD::GlobalAddress: {
GlobalValue *GV = cast<GlobalAddressSDNode>(N)->getGlobal();
@@ -1035,7 +1038,10 @@
unsigned SH, MB, ME;
if (isRotateAndMask(N->getOperand(0).Val, Imm, false, SH, MB, ME)) {
Val = Select(N->getOperand(0).getOperand(0));
- } else {
+ } else if (Imm == 0) {
+ // AND X, 0 -> 0, not "rlwinm 32".
+ return Select(N->getOperand(1));
+ } else {
Val = Select(N->getOperand(0));
isRunOfOnes(Imm, MB, ME);
SH = 0;