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-rw-r--r--llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp b/llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp
index 500333fb296..9725c2c586c 100644
--- a/llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp
+++ b/llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp
@@ -640,7 +640,7 @@ static bool isRotateAndMask(unsigned Opcode, unsigned Shift, unsigned Mask,
}
// if the mask doesn't intersect any Indeterminant bits
- if (!(Mask & Indeterminant)) {
+ if (Mask && !(Mask & Indeterminant)) {
SH = Shift;
// make sure the mask is still a mask (wrap arounds may not be)
return isRunOfOnes(Mask, MB, ME);
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