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Improve debug codegen

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This commit is contained in:
Victor Zverovich
2024-09-04 08:21:18 -07:00
parent 1e0771c70a
commit b4d1d7f8e6
2 changed files with 22 additions and 19 deletions
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35
include/fmt/base.h
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@ -78,6 +78,11 @@
#else #else
# define FMT_HAS_INCLUDE(x) 0 # define FMT_HAS_INCLUDE(x) 0
#endif #endif
#ifdef __has_builtin
# define FMT_HAS_BUILTIN(x) __has_builtin(x)
#else
# define FMT_HAS_BUILTIN(x) 0
#endif
#ifdef __has_cpp_attribute #ifdef __has_cpp_attribute
# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) # define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
#else #else
@ -455,6 +460,9 @@ constexpr auto is_utf8_enabled() -> bool { return "\u00A7"[1] == '\xA7'; }
// It is a macro for better debug codegen without if constexpr. // It is a macro for better debug codegen without if constexpr.
#define FMT_USE_UTF8 (!FMT_MSC_VERSION || fmt::detail::is_utf8_enabled()) #define FMT_USE_UTF8 (!FMT_MSC_VERSION || fmt::detail::is_utf8_enabled())
template <typename T> constexpr const char* narrow(const T*) { return nullptr; }
constexpr FMT_ALWAYS_INLINE const char* narrow(const char* s) { return s; }
#ifndef FMT_UNICODE #ifndef FMT_UNICODE
# define FMT_UNICODE 1 # define FMT_UNICODE 1
#endif #endif
@ -462,12 +470,6 @@ constexpr auto is_utf8_enabled() -> bool { return "\u00A7"[1] == '\xA7'; }
static_assert(!FMT_UNICODE || FMT_USE_UTF8, static_assert(!FMT_UNICODE || FMT_USE_UTF8,
"Unicode support requires compiling with /utf-8"); "Unicode support requires compiling with /utf-8");
template <typename Char> FMT_CONSTEXPR auto length(const Char* s) -> size_t {
size_t len = 0;
while (*s++) ++len;
return len;
}
template <typename Char> template <typename Char>
FMT_CONSTEXPR auto compare(const Char* s1, const Char* s2, std::size_t n) FMT_CONSTEXPR auto compare(const Char* s1, const Char* s2, std::size_t n)
-> int { -> int {
@ -536,13 +538,20 @@ template <typename Char> class basic_string_view {
constexpr basic_string_view(std::nullptr_t) = delete; constexpr basic_string_view(std::nullptr_t) = delete;
/// Constructs a string reference object from a C string. /// Constructs a string reference object from a C string.
FMT_CONSTEXPR20 #if FMT_GCC_VERSION
basic_string_view(const Char* s) FMT_ALWAYS_INLINE
: data_(s), #endif
size_(detail::const_check(std::is_same<Char, char>::value && FMT_CONSTEXPR20 basic_string_view(const Char* s) : data_(s) {
!detail::is_constant_evaluated(false)) #if FMT_HAS_BUILTIN(__buitin_strlen) || FMT_GCC_VERSION || FMT_CLANG_VERSION
? strlen(reinterpret_cast<const char*>(s)) if (std::is_same<Char, char>::value) {
: detail::length(s)) {} size_ = __builtin_strlen(detail::narrow(s));
return;
}
#endif
size_t len = 0;
while (*s++) ++len;
size_ = len;
}
/// Constructs a string reference from a `std::basic_string` or a /// Constructs a string reference from a `std::basic_string` or a
/// `std::basic_string_view` object. /// `std::basic_string_view` object.

6
include/fmt/format.h
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@ -81,12 +81,6 @@
# define FMT_SO_VISIBILITY(value) # define FMT_SO_VISIBILITY(value)
#endif #endif
#ifdef __has_builtin
# define FMT_HAS_BUILTIN(x) __has_builtin(x)
#else
# define FMT_HAS_BUILTIN(x) 0
#endif
#if FMT_GCC_VERSION || FMT_CLANG_VERSION #if FMT_GCC_VERSION || FMT_CLANG_VERSION
# define FMT_NOINLINE __attribute__((noinline)) # define FMT_NOINLINE __attribute__((noinline))
#else #else