Make sure expressions only have one use before emitting them into a place that is...

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 d70d0f20edfd9fb88303c01cdb976138edfb2f79..51b8927b86fbd5a759ce0a6924b4b0b50e4fab96 100644 (file)
--- a/lib/Target/PowerPC/PPCISelPattern.cpp
+++ b/lib/Target/PowerPC/PPCISelPattern.cpp
@@ -1670,9 +1670,10 @@ unsigned ISel::SelectExpr(SDOperand N, bool Recording) {
 
     // 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));