[PATCH] D138832: [llvm-exegesis][x86] Add option to prevent use of xmm8-xmm15 upper SSE registers
Thorsten via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Nov 28 10:02:52 PST 2022
tschuett added inline comments.
================
Comment at: llvm/docs/CommandGuide/llvm-exegesis.rst:209
+
+ Using the upper xmm regsiters (xmm8-xmm15) forces a longer instruction encoding
+ which may put greater pressure on the frontend instruct fetch and decode stages,
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registers
Repository:
rG LLVM Github Monorepo
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https://reviews.llvm.org/D138832/new/
https://reviews.llvm.org/D138832
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