[PATCH] D19391: transform obscured FP sign bit ops into a fabs/fneg using TLI hook
Sanjay Patel via llvm-commits
llvm-commits at lists.llvm.org
Wed May 4 12:23:13 PDT 2016
spatel retitled this revision from "transform masking off of an FP sign bit into a fabs...but only if it's legal!" to "transform obscured FP sign bit ops into a fabs/fneg using TLI hook".
spatel updated the summary for this revision.
spatel updated this revision to Diff 56185.
spatel added a comment.
Patch updated:
1. Instead of checking legality of fabs/fneg, provide a TLI hook that can predicate as needed.
2. Instead of handling fabs alone, implement a fabs/fneg helper function leaving vectors and fnabs as TODO items.
http://reviews.llvm.org/D19391
Files:
include/llvm/Target/TargetLowering.h
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
lib/Target/AArch64/AArch64ISelLowering.h
lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
test/CodeGen/AArch64/fcvt-int.ll
test/Transforms/InstCombine/and2.ll
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