[PATCH] D154805: [DAGCombiner] Fold IEEE `fmul`/`fdiv` by Pow2 to `add`/`sub` of exp

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


================
Comment at: llvm/include/llvm/CodeGen/TargetLowering.h:3984
+    return N->getOpcode() == ISD::FDIV;
+  }
+
----------------
This should probably be inside TargetLoweringBase near the top of the file - somewhere near shouldProduceAndByConstByHoistingConstFromShiftsLHSOfAnd - that's where we put the per-target optimization controls switches.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D154805/new/

https://reviews.llvm.org/D154805