[PATCH] D96703: [DAG] foldSubToUSubSat - fold sub(a,trunc(umin(zext(a),b))) -> usubsat(a,trunc(umin(b,c)))
Simon Pilgrim via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Feb 15 04:33:59 PST 2021
RKSimon created this revision.
RKSimon added reviewers: craig.topper, nikic, spatel, pengfei.
Herald added subscribers: ecnelises, steven.zhang, hiraditya.
RKSimon requested review of this revision.
Herald added a project: LLVM.
This moves the last custom x86 USUBSAT fold to generic DAGCombine.
Completes PR40111
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D96703
Files:
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
llvm/lib/Target/X86/X86ISelLowering.cpp
llvm/test/CodeGen/X86/psubus.ll
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