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Improve binary size

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This commit is contained in:
Victor Zverovich 2024-08-29 17:31:30 -07:00
parent f213d83306
commit 5eb023cd56
1 changed files with 10 additions and 9 deletions
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19
include/fmt/format.h
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@ -1166,6 +1166,10 @@ FMT_CONSTEXPR inline auto count_digits(uint128_opt n) -> int {
}
#endif
#ifndef FMT_OPTIMIZE_SIZE
# define FMT_OPTIMIZE_SIZE 0
#endif
#ifdef FMT_BUILTIN_CLZLL
// It is a separate function rather than a part of count_digits to workaround
// the lack of static constexpr in constexpr functions.
@ -1191,7 +1195,7 @@ inline auto do_count_digits(uint64_t n) -> int {
// except for n == 0 in which case count_digits returns 1.
FMT_CONSTEXPR20 inline auto count_digits(uint64_t n) -> int {
#ifdef FMT_BUILTIN_CLZLL
if (!is_constant_evaluated()) return do_count_digits(n);
if (!is_constant_evaluated() && !FMT_OPTIMIZE_SIZE) return do_count_digits(n);
#endif
return count_digits_fallback(n);
}
@ -1241,9 +1245,7 @@ FMT_INLINE auto do_count_digits(uint32_t n) -> int {
// Optional version of count_digits for better performance on 32-bit platforms.
FMT_CONSTEXPR20 inline auto count_digits(uint32_t n) -> int {
#ifdef FMT_BUILTIN_CLZ
if (!is_constant_evaluated()) {
return do_count_digits(n);
}
if (!is_constant_evaluated() && !FMT_OPTIMIZE_SIZE) return do_count_digits(n);
#endif
return count_digits_fallback(n);
}
@ -1291,7 +1293,8 @@ inline auto equal2(const char* lhs, const char* rhs) -> bool {
// Writes a two-digit value to out.
template <typename Char>
FMT_CONSTEXPR20 FMT_INLINE void write2digits(Char* out, size_t value) {
if (!is_constant_evaluated() && std::is_same<Char, char>::value) {
if (!is_constant_evaluated() && std::is_same<Char, char>::value &&
!FMT_OPTIMIZE_SIZE) {
memcpy(out, digits2(value), 2);
return;
}
@ -1994,10 +1997,8 @@ FMT_CONSTEXPR FMT_INLINE auto write_int(OutputIt out, int num_digits,
// Slightly faster check for specs.width == 0 && specs.precision == -1.
if ((specs.width | (specs.precision + 1)) == 0) {
auto it = reserve(out, to_unsigned(num_digits) + (prefix >> 24));
if (prefix != 0) {
for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8)
*it++ = static_cast<Char>(p & 0xff);
}
for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8)
*it++ = static_cast<Char>(p & 0xff);
return base_iterator(out, write_digits(it));
}
auto data = write_int_data<Char>(num_digits, prefix, specs);