[PATCH] D83913: [X86] Change the tuning settings for pentium4 to be more modern since its the default 32-bit cpu in clang
Craig Topper via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Jul 15 15:00:44 PDT 2020
craig.topper created this revision.
craig.topper added reviewers: echristo, RKSimon, spatel, andreadb.
Herald added subscribers: jfb, hiraditya.
Herald added a project: LLVM.
Alternative to D83897 <https://reviews.llvm.org/D83897>. I believe the big change here is that I removed slow unaligned memory 16
Down side that it may adversely effect tuning if someone explicitly targets -march=pentium4 and expects pentium4 tuned code. Of course pentium4 is so old our default behavior with the previous settings may not have been the best either.
https://reviews.llvm.org/D83913
Files:
llvm/lib/Target/X86/X86.td
llvm/test/CodeGen/X86/cfguard-x86-vectorcall.ll
llvm/test/CodeGen/X86/slow-unaligned-mem.ll
llvm/test/DebugInfo/COFF/fpo-shrink-wrap.ll
llvm/test/DebugInfo/COFF/types-array.ll
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