[InstCombine] Use setAllBits in place of getAllOnesValue since we know the bitwidths are the same. NFCI

llvm-svn: 299413
2017-04-04 05:03:02 +00:00 · 2017-04-04 05:03:02 +00:00 · e06b6bcfa1
parent 82bf48d8b9
commit e06b6bcfa1
1 changed files with 1 additions and 1 deletions
--- a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
@ -235,7 +235,7 @@ Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask,
  // operands.  This allows visitTruncInst (for example) to simplify the
  // operand of a trunc without duplicating all the logic below.
  if (Depth == 0 && !V->hasOneUse())
-    DemandedMask = APInt::getAllOnesValue(BitWidth);
+    DemandedMask.setAllBits();

  switch (I->getOpcode()) {
  default: