[all-commits] [llvm/llvm-project] 716883: [CostModel][TTI] Replace BAD_ICMP_PREDICATE with I...
Simon Pilgrim via All-commits
all-commits at lists.llvm.org
Thu Oct 7 07:43:03 PDT 2021
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: 716883736bc644cf3f0d83f5096d9bc910762591
https://github.com/llvm/llvm-project/commit/716883736bc644cf3f0d83f5096d9bc910762591
Author: Simon Pilgrim <llvm-dev at redking.me.uk>
Date: 2021-10-07 (Thu, 07 Oct 2021)
Changed paths:
M llvm/include/llvm/CodeGen/BasicTTIImpl.h
M llvm/test/Analysis/CostModel/X86/arith-ssat.ll
Log Message:
-----------
[CostModel][TTI] Replace BAD_ICMP_PREDICATE with ICMP_SGT for generic sadd/ssub sat cost expansion
The comparison always checks for negative values so know the icmp predicate will be ICMP_SGT
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