[PATCH] D129103: [InstCombine] [NFC] use C.isNegatedPowerOf2() instead of (~C + 1).isPowerOf2()

[Chenbing.Zheng via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGb66220f25aea: [InstCombine] [NFC] use C.isNegatedPowerOf2() instead of (~C + 1).isPowerOf2() (authored by Chenbing.Zheng).

Changed prior to commit:
  https://reviews.llvm.org/D129103?vs=442168&id=442208#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D129103/new/

https://reviews.llvm.org/D129103

Files:
  llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp


Index: llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
===================================================================
--- llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
+++ llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
@@ -1779,7 +1779,7 @@
 
     // Restrict this fold only for single-use 'and' (PR10267).
     // ((%x & C) == 0) --> %x u< (-C)  iff (-C) is power of two.
-    if ((~(*C2) + 1).isPowerOf2()) {
+    if (C2->isNegatedPowerOf2()) {
       Constant *NegBOC =
           ConstantExpr::getNeg(cast<Constant>(And->getOperand(1)));
       auto NewPred = isICMP_NE ? ICmpInst::ICMP_UGE : ICmpInst::ICMP_ULT;


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