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Load cache sizes into R11_LP/R8_LP

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H.J. Lu 2012-05-15 09:52:35 -07:00
parent 8a17f34979
commit 54e2ed8105
2 changed files with 8 additions and 2 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2012-05-15 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/x86_64/memcpy.S: Load __x86_64_data_cache_size_half
into R11_LP and load __x86_64_shared_cache_size_half into
R8_LP.
2012-05-15 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/x86_64/multiarch/memcmp-sse4.S: Load cache size into

4
sysdeps/x86_64/memcpy.S
View File

@ -254,7 +254,7 @@ L(32after):
L(fasttry): /* first 1/2 L1 */
#ifndef NOT_IN_libc /* only up to this algorithm outside of libc.so */
movq __x86_64_data_cache_size_half(%rip), %r11
mov __x86_64_data_cache_size_half(%rip), %R11_LP
cmpq %rdx, %r11 /* calculate the smaller of */
cmovaq %rdx, %r11 /* remaining bytes and 1/2 L1 */
#endif
@ -303,7 +303,7 @@ L(fastafter):
/* Handle large blocks smaller than 1/2 L2. */
L(pretry): /* first 1/2 L2 */
movq __x86_64_shared_cache_size_half (%rip), %r8
mov __x86_64_shared_cache_size_half (%rip), %R8_LP
cmpq %rdx, %r8 /* calculate the lesser of */
cmovaq %rdx, %r8 /* remaining bytes and 1/2 L2 */