[libc++] Mark __u64toa and __u32toa as noexcept
The two functions don't throw, and the generated code is better when
we explicitly tell the compiler that the functions are noexcept. This
isn't an ABI break because the signatures of the functions stay the
same with or without noexcept.
Fixes https://llvm.org/PR46016
Differential Revision: https://reviews.llvm.org/D80379
Cr-Mirrored-From: https://chromium.googlesource.com/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 485b9083fe69601c9f3f91f7f1be9d7f3a26bb1e
diff --git a/src/charconv.cpp b/src/charconv.cpp
index d303588..8cfe40d 100644
--- a/src/charconv.cpp
+++ b/src/charconv.cpp
@@ -32,7 +32,7 @@
template <typename T>
inline _LIBCPP_INLINE_VISIBILITY char*
-append1(char* buffer, T i)
+append1(char* buffer, T i) noexcept
{
*buffer = '0' + static_cast<char>(i);
return buffer + 1;
@@ -40,7 +40,7 @@
template <typename T>
inline _LIBCPP_INLINE_VISIBILITY char*
-append2(char* buffer, T i)
+append2(char* buffer, T i) noexcept
{
memcpy(buffer, &cDigitsLut[(i)*2], 2);
return buffer + 2;
@@ -48,21 +48,21 @@
template <typename T>
inline _LIBCPP_INLINE_VISIBILITY char*
-append3(char* buffer, T i)
+append3(char* buffer, T i) noexcept
{
return append2(append1(buffer, (i) / 100), (i) % 100);
}
template <typename T>
inline _LIBCPP_INLINE_VISIBILITY char*
-append4(char* buffer, T i)
+append4(char* buffer, T i) noexcept
{
return append2(append2(buffer, (i) / 100), (i) % 100);
}
template <typename T>
inline _LIBCPP_INLINE_VISIBILITY char*
-append2_no_zeros(char* buffer, T v)
+append2_no_zeros(char* buffer, T v) noexcept
{
if (v < 10)
return append1(buffer, v);
@@ -72,7 +72,7 @@
template <typename T>
inline _LIBCPP_INLINE_VISIBILITY char*
-append4_no_zeros(char* buffer, T v)
+append4_no_zeros(char* buffer, T v) noexcept
{
if (v < 100)
return append2_no_zeros(buffer, v);
@@ -84,7 +84,7 @@
template <typename T>
inline _LIBCPP_INLINE_VISIBILITY char*
-append8_no_zeros(char* buffer, T v)
+append8_no_zeros(char* buffer, T v) noexcept
{
if (v < 10000)
{
@@ -99,7 +99,7 @@
}
char*
-__u32toa(uint32_t value, char* buffer)
+__u32toa(uint32_t value, char* buffer) _NOEXCEPT
{
if (value < 100000000)
{
@@ -120,7 +120,7 @@
}
char*
-__u64toa(uint64_t value, char* buffer)
+__u64toa(uint64_t value, char* buffer) _NOEXCEPT
{
if (value < 100000000)
{