[PATCH] D44548: [DAGCombiner] Expand combining of FP logical operations to sign-setting FP operations

Sanjay Patel via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Tue Oct 9 07:58:43 PDT 2018


spatel added a comment.

How about enabling the hook for PPC before adding to the generic DAG combine...
Right now, you'll get something horrible for normal fabs (and fneg?) without this patch, right?

  	xscvdpspn 0, 1
  	xxsldwi 0, 0, 0, 3
  	mfvsrwz 3, 0
  	rlwinm 3, 3, 0, 1, 31
  	mtvsrd 0, 3
  	xxsldwi 0, 0, 0, 1
  	xscvspdpn 1, 0


Repository:
  rL LLVM

https://reviews.llvm.org/D44548





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