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| author | H.J. Lu <hjl.tools@gmail.com> | 2020-07-11 09:04:34 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2020-07-11 09:34:03 -0700 |
| commit | 9016b6f3893789ddfbd978aa572b46b3d3ce762f (patch) | |
| tree | c810efbead39f0efb54e7e79e4960e84c7718527 /sysdeps/x86/cacheinfo.c | |
| parent | 758caf37366c3bebd349cd3107341dbfd761189a (diff) | |
| download | glibc-9016b6f3893789ddfbd978aa572b46b3d3ce762f.tar.xz glibc-9016b6f3893789ddfbd978aa572b46b3d3ce762f.zip | |
x86: Remove the unused __x86_prefetchw
Since
commit c867597bff2562180a18da4b8dba89d24e8b65c4
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Jun 8 13:57:50 2016 -0700
X86-64: Remove previous default/SSE2/AVX2 memcpy/memmove
removed the only usage of __x86_prefetchw, we can remove the unused
__x86_prefetchw.
Diffstat (limited to 'sysdeps/x86/cacheinfo.c')
| -rw-r--r-- | sysdeps/x86/cacheinfo.c | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/sysdeps/x86/cacheinfo.c b/sysdeps/x86/cacheinfo.c index 136809a6d8..5366a37ea0 100644 --- a/sysdeps/x86/cacheinfo.c +++ b/sysdeps/x86/cacheinfo.c @@ -536,11 +536,6 @@ long int __x86_rep_movsb_threshold attribute_hidden = 2048; /* Threshold to use Enhanced REP STOSB. */ long int __x86_rep_stosb_threshold attribute_hidden = 2048; -#ifndef DISABLE_PREFETCHW -/* PREFETCHW support flag for use in memory and string routines. */ -int __x86_prefetchw attribute_hidden; -#endif - static void get_common_cache_info (long int *shared_ptr, unsigned int *threads_ptr, @@ -831,17 +826,6 @@ init_cacheinfo (void) /* Account for exclusive L2 and L3 caches. */ shared += core; } - -#ifndef DISABLE_PREFETCHW - if (max_cpuid_ex >= 0x80000001) - { - unsigned int eax; - __cpuid (0x80000001, eax, ebx, ecx, edx); - /* PREFETCHW || 3DNow! */ - if ((ecx & 0x100) || (edx & 0x80000000)) - __x86_prefetchw = -1; - } -#endif } if (cpu_features->data_cache_size != 0) |