| commit | e5829d82c88117c9f4752cedfefc8516cb9ffdf7 | |
| author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | |
| Fri, 7 Mar 2014 12:09:47 +0000 (7 06:09 -0600) | ||
| committer | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | |
| Mon, 10 Mar 2014 12:46:38 +0000 (10 07:46 -0500) | ||
| tree | 191bc64df21b8a596c71186084a86336afbbbb0d | treesnapshot (tar.gz zip) |
| parent | e032058ea756e396c4ed1395a44d8b321e370b2f | commitdiff |
PowerPC: strncat optimization for PPC64
The optimization is achieved by following techniques:
1. Doubleword aligned memory access and compares using
cmpb instruction.
2. Loop unrolling for byte load/store.
3. CPU pre-fetch to avoid cache miss.
Backport of ba9cc0714e58a9e8fa73cf6b0e205cbf1e6b71f2
The optimization is achieved by following techniques:
1. Doubleword aligned memory access and compares using
cmpb instruction.
2. Loop unrolling for byte load/store.
3. CPU pre-fetch to avoid cache miss.
Backport of ba9cc0714e58a9e8fa73cf6b0e205cbf1e6b71f2
| ChangeLog | diffblobblamehistory | |
| sysdeps/powerpc/powerpc64/multiarch/Makefile | diffblobblamehistory | |
| sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c | diffblobblamehistory | |
| sysdeps/powerpc/powerpc64/multiarch/strncat-power7.S | [new file with mode: 0644] | blob |
| sysdeps/powerpc/powerpc64/multiarch/strncat-ppc64.c | [new file with mode: 0644] | blob |
| sysdeps/powerpc/powerpc64/multiarch/strncat.c | [new file with mode: 0644] | blob |
| sysdeps/powerpc/powerpc64/power7/strncat.S | [new file with mode: 0644] | blob |