Displaying 1 result from an estimated 1 matches for "r156323".
2014 Jun 30
2
[LLVMdev] r156323 - Reassociate FP operands.
Owen/All,
I've been working on adding support for reassociation with unsafe math
(see: http://reviews.llvm.org/D4129).
Do you know if this change, r156323, is still necessary? Specifically, do
we need the reassociation pass to canonicalize FP operands for CSE to work
effectively? This kinda scares me if it does! :(
Side note:
Without this canonicalization, I did see a 3% regression in Mesa because
the slp-vectorizer's cost model is sensitive t...