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liblzma: Use attribute no_profile_instrument_function with ifunc.

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Thanks to Sam James for determining this was the attribute needed to
workaround the GCC bug and for his version of the patch in Gentoo.
This commit is contained in:
Jia Tan 2024-03-05 00:34:46 +08:00
parent ed957d3942
commit 4e1c97052b
2 changed files with 8 additions and 0 deletions
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5
src/liblzma/check/crc32_fast.c
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@ -135,6 +135,11 @@ typedef uint32_t (*crc32_func_type)(
// This resolver is shared between all three dispatch methods. It serves as // This resolver is shared between all three dispatch methods. It serves as
// the ifunc resolver if ifunc is supported, otherwise it is called as a // the ifunc resolver if ifunc is supported, otherwise it is called as a
// regular function by the constructor or first call resolution methods. // regular function by the constructor or first call resolution methods.
// The __no_profile_instrument_function__ attribute support is checked when
// determining if ifunc can be used, so it is safe to use here.
#ifdef CRC_USE_IFUNC
__attribute__((__no_profile_instrument_function__))
#endif
static crc32_func_type static crc32_func_type
crc32_resolve(void) crc32_resolve(void)
{ {

3
src/liblzma/check/crc64_fast.c
View file

@ -98,6 +98,9 @@ typedef uint64_t (*crc64_func_type)(
# pragma GCC diagnostic ignored "-Wunused-function" # pragma GCC diagnostic ignored "-Wunused-function"
#endif #endif
#ifdef CRC_USE_IFUNC
__attribute__((__no_profile_instrument_function__))
#endif
static crc64_func_type static crc64_func_type
crc64_resolve(void) crc64_resolve(void)
{ {