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author | James Zern <jzern@google.com> | 2021-07-26 16:52:56 -0700 |
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committer | James Zern <jzern@google.com> | 2021-07-26 16:52:56 -0700 |
commit | 0d1aec7373b6e43825281f0a4f9d40df77323e0a (patch) | |
tree | e7d65dcac328354b5d71913a39af7f4b85a4822b /vpx_ports | |
parent | fc04a9491ebaaa8e2b1c7c8e0587c8a1873531d6 (diff) | |
download | libvpx-0d1aec7373b6e43825281f0a4f9d40df77323e0a.tar libvpx-0d1aec7373b6e43825281f0a4f9d40df77323e0a.tar.gz libvpx-0d1aec7373b6e43825281f0a4f9d40df77323e0a.tar.bz2 libvpx-0d1aec7373b6e43825281f0a4f9d40df77323e0a.zip |
vpx_ports/x86.h: sync with aom_ports/x86.h
adds a few comments and makes the file ascii:
854b2766a Replace non-ASCII characters
Change-Id: I6c2d76b293158bcad9f1ded7a91a81bda1e700fb
Diffstat (limited to 'vpx_ports')
-rw-r--r-- | vpx_ports/x86.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/vpx_ports/x86.h b/vpx_ports/x86.h index ad3da84ac..4d5391b78 100644 --- a/vpx_ports/x86.h +++ b/vpx_ports/x86.h @@ -242,7 +242,7 @@ static INLINE int x86_simd_caps(void) { // x86_readtsc directly, but prevent the CPU's out-of-order execution from // affecting the measurement (by having earlier/later instructions be evaluated // in the time interval). See the white paper, "How to Benchmark Code -// Execution Times on IntelĀ® IA-32 and IA-64 Instruction Set Architectures" by +// Execution Times on Intel(R) IA-32 and IA-64 Instruction Set Architectures" by // Gabriele Paoloni for more information. // // If you are timing a large function (CPU time > a couple of seconds), use @@ -308,6 +308,7 @@ static INLINE unsigned int x86_readtscp(void) { static INLINE unsigned int x86_tsc_start(void) { unsigned int reg_eax, reg_ebx, reg_ecx, reg_edx; + // This call should not be removed. See function notes above. cpuid(0, 0, reg_eax, reg_ebx, reg_ecx, reg_edx); // Avoid compiler warnings on unused-but-set variables. (void)reg_eax; @@ -320,6 +321,7 @@ static INLINE unsigned int x86_tsc_start(void) { static INLINE unsigned int x86_tsc_end(void) { uint32_t v = x86_readtscp(); unsigned int reg_eax, reg_ebx, reg_ecx, reg_edx; + // This call should not be removed. See function notes above. cpuid(0, 0, reg_eax, reg_ebx, reg_ecx, reg_edx); // Avoid compiler warnings on unused-but-set variables. (void)reg_eax; |