[PATCH] D76568: [InstCombine] Add CTPOP -> CTTZ simplifications (PR43513)

[Dávid Bolvanský via Phabricator via llvm-commits]

xbolva00 accepted this revision.
xbolva00 added a comment.
This revision is now accepted and ready to land.

Looks good



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Comment at: llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp:1340
+    auto *Cttz = IC.Builder.CreateCall(F, {X, IC.Builder.getFalse()});
+    auto *Bw = Constant::getIntegerValue(Ty, APInt(BitWidth, BitWidth));
+    return IC.replaceInstUsesWith(II, IC.Builder.CreateSub(Bw, Cttz));
----------------
ConstantInt::get?


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https://reviews.llvm.org/D76568