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Check for !isa<Constant> instead of isa<Instruction>. This

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matches what the comment says, and it avoids spurious BitCast
instructions for Argument values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78121 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-08-04 23:23:56 +00:00
parent f363bc8326
commit 3fe14bf153
1 changed files with 1 additions and 1 deletions
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2
lib/Transforms/Scalar/LoopStrengthReduce.cpp
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@ -1637,7 +1637,7 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEV *const &Stride,
// do this by forcing a BitCast (noop cast) to be inserted into the // do this by forcing a BitCast (noop cast) to be inserted into the
// preheader in this case. // preheader in this case.
if (!fitsInAddressMode(Base, getAccessType(Inst), TLI, false) && if (!fitsInAddressMode(Base, getAccessType(Inst), TLI, false) &&
!isa<Instruction>(BaseV)) { isa<Constant>(BaseV)) {
// We want this constant emitted into the preheader! This is just // We want this constant emitted into the preheader! This is just
// using cast as a copy so BitCast (no-op cast) is appropriate // using cast as a copy so BitCast (no-op cast) is appropriate
BaseV = new BitCastInst(BaseV, BaseV->getType(), "preheaderinsert", BaseV = new BitCastInst(BaseV, BaseV->getType(), "preheaderinsert",