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Inline the parser into from_chars under clang

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Clang kept from_chars_fixed_format out of line, so every conversion paid for
the call and its six register saves and restores.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Raúl Marín 2026-09-23 21:17:10 +02:00
parent 18ee067179
commit 0900eedf2f
1 changed files with 2 additions and 2 deletions
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4
include/fast_float/parse_number.h
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@ -187,7 +187,7 @@ template <> struct from_chars_caller<std::float64_t> {
// whole parser into each caller, where the format is a constant; clang keeps
// it out of line and would otherwise re-test each format flag per conversion.
template <typename T, typename UC, chars_format Fmt>
FASTFLOAT_CONSTEXPR20 from_chars_result_t<UC>
fastfloat_clang_really_inline FASTFLOAT_CONSTEXPR20 from_chars_result_t<UC>
from_chars_fixed_format(UC const *first, UC const *last, T &value) noexcept {
return from_chars_caller<T>::call(first, last, value,
parse_options_t<UC>(Fmt));
@ -195,7 +195,7 @@ from_chars_fixed_format(UC const *first, UC const *last, T &value) noexcept {
#endif
template <typename T, typename UC, typename>
FASTFLOAT_CONSTEXPR20 from_chars_result_t<UC>
fastfloat_clang_really_inline FASTFLOAT_CONSTEXPR20 from_chars_result_t<UC>
from_chars(UC const *first, UC const *last, T &value,
chars_format fmt /*= chars_format::general*/) noexcept {
#ifdef __clang__