[all-commits] [llvm/llvm-project] 2f3a8f: [libc] Skip x87 floating point register and only u...

[lntue via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2f3a8fd0b3322baac25e5595313413ed4cd1158f
      https://github.com/llvm/llvm-project/commit/2f3a8fd0b3322baac25e5595313413ed4cd1158f
  Author: lntue <lntue at google.com>
  Date:   2025-06-19 (Thu, 19 Jun 2025)

  Changed paths:
    M libc/src/__support/FPUtil/FEnvImpl.h
    M libc/src/__support/FPUtil/x86_64/FEnvImpl.h

  Log Message:
  -----------
  [libc] Skip x87 floating point register and only update mxcsr for x86_64 targets when raising exceptions inside math functions. (#144951)

Updating x87 floating point register significantly affect the
performance of the functions.
All the floating point exception reads will merge the results from both
mxcsr and x87 registers anyway.



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