diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/Local.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/Local.cpp | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp index ecad79b..efc5396 100644 --- a/llvm/lib/Transforms/Utils/Local.cpp +++ b/llvm/lib/Transforms/Utils/Local.cpp @@ -3147,11 +3147,6 @@ bool llvm::recognizeBSwapOrBitReverseIdiom( if (!ITy->isIntOrIntVectorTy() || ITy->getScalarSizeInBits() > 128) return false; // Can't do integer/elements > 128 bits. - Type *DemandedTy = ITy; - if (I->hasOneUse()) - if (auto *Trunc = dyn_cast<TruncInst>(I->user_back())) - DemandedTy = Trunc->getType(); - // Try to find all the pieces corresponding to the bswap. bool FoundRoot = false; std::map<Value *, Optional<BitPart>> BPS; @@ -3165,6 +3160,7 @@ bool llvm::recognizeBSwapOrBitReverseIdiom( "Illegal bit provenance index"); // If the upper bits are zero, then attempt to perform as a truncated op. + Type *DemandedTy = ITy; if (BitProvenance.back() == BitPart::Unset) { while (!BitProvenance.empty() && BitProvenance.back() == BitPart::Unset) BitProvenance = BitProvenance.drop_back(); |