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Optimize `println()` overloads added in P3142R0 #4672

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frederick-vs-ja wants to merge 2 commits into microsoft:main from frederick-vs-ja:optimize-println

+181 −2

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frederick-vs-ja commented May 12, 2024

Fixes #4630.

Add a function __std_print_newline_only_to_unicode_console to the import library to avoid potential branches around WriteConsoleW.
Use sputc for non-Unicode new line printing for ostream to reduce potential branches.
Use fputc for non-Unicode new line printing for FILE* as the function seems to be the simplest for the purpose in UCRT.

frederick-vs-ja added 2 commits

May 12, 2024 15:56


          Optimize println() for FILE*

ffcc38e


          Optimize println() for ostream

3fdadd2

frederick-vs-ja requested a review from a team as a code owner

May 12, 2024 08:04

StephanTLavavej added the performance label

StephanTLavavej self-assigned this

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