[all-commits] [llvm/llvm-project] da23a8: [FormattedStream] Add ASCII fast path (#117892)

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: da23a8372cd37e1a6280e9e0519bc0be60e2c209
      https://github.com/llvm/llvm-project/commit/da23a8372cd37e1a6280e9e0519bc0be60e2c209
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2024-12-02 (Mon, 02 Dec 2024)

  Changed paths:
    M llvm/lib/Support/FormattedStream.cpp

  Log Message:
  -----------
  [FormattedStream] Add ASCII fast path (#117892)

Printing IR spends a large amount of time updating the column count via
generic UTF-8 APIs. Speed it up by adding a fast path for the common
printable ASCII case.

This makes `-print-on-crash -print-module-scope` about two times faster.



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