[PATCH] D129715: [LoongArch] Optimize the loading of floating-point immediates

[Lu Weining via Phabricator via llvm-commits]

SixWeining added a comment.

This change optimzies out the constant pool for loading floating-point constant by li+i2f, so I think the title could be:  "[LoongArch] Optimize the loading of floating-point immediates by li+i2f", and it' better that use a common case in the summary but not the 1.0.

To other reviewers: we tested this optimization with an internal llvm version (llvm13) on 3A5000, and it shows that SPEC CPU2006 FP score increases 1% in average. 470.lbm score increases 8.9%. But we wonder why other architectures have not done so? Is there any potential issue?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D129715/new/

https://reviews.llvm.org/D129715