diff options
| author | Stefan Liebler <stli@linux.vnet.ibm.com> | 2016-05-24 10:39:13 +0200 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.vnet.ibm.com> | 2016-05-24 10:39:13 +0200 |
| commit | 074b0f27d9b9cdfb58c5c7e7f4129546084582b2 (patch) | |
| tree | 60ec9037761a7cff348540574d5d0f3cfea71665 /io/poll.h | |
| parent | 04bb21ac93e90d7696bcaf8febe2b2dd2d83585a (diff) | |
| download | glibc-074b0f27d9b9cdfb58c5c7e7f4129546084582b2.tar glibc-074b0f27d9b9cdfb58c5c7e7f4129546084582b2.tar.gz glibc-074b0f27d9b9cdfb58c5c7e7f4129546084582b2.tar.bz2 glibc-074b0f27d9b9cdfb58c5c7e7f4129546084582b2.zip | |
S390: Use 64bit instruction to check for copies of > 1MB with mvcle.
The __memcpy_default variant on s390 64bit calculates the number of
256byte blocks in a 64bit register and checks, if they exceed 1MB
to jump to mvcle. Otherwise a mvc-loop is used. The compare-instruction
only checks a 32bit value.
This patch uses a 64bit compare.
ChangeLog:
* sysdeps/s390/s390-64/memcpy.S (memcpy):
Use cghi instead of chi to compare 64bit value.
Diffstat (limited to 'io/poll.h')
0 files changed, 0 insertions, 0 deletions