Make sure expressions only have one use before emitting them into a place that is conditionally executed
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22960 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCISelPattern.cpp b/lib/Target/PowerPC/PPCISelPattern.cpp
index d70d0f2..51b8927 100644
--- a/lib/Target/PowerPC/PPCISelPattern.cpp
+++ b/lib/Target/PowerPC/PPCISelPattern.cpp
@@ -1670,9 +1670,10 @@
// If the false value is simple enough, evaluate it inline in the false
// block.
- if (isa<ConstantSDNode>(N.getOperand(3)) ||
- isa<ConstantFPSDNode>(N.getOperand(3)) ||
- isa<GlobalAddressSDNode>(N.getOperand(3)))
+ if (N.getOperand(3).Val->hasOneUse() &&
+ (isa<ConstantSDNode>(N.getOperand(3)) ||
+ isa<ConstantFPSDNode>(N.getOperand(3)) ||
+ isa<GlobalAddressSDNode>(N.getOperand(3))))
FalseValue = 0;
else
FalseValue = SelectExpr(N.getOperand(3));