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2012-08-21[Powerpc] Tune/optimize powerpc{32,64}/power7/memchr.S.Will Schmidt
Assorted tweaking, twisting and tuning to squeeze a few additional cycles out of the memchr code. Changes include bypassing the shift pairs (sld,srd) when they are not required, and unrolling the small_loop that handles short and trailing strings. Per scrollpipe data measuring aligned strings for 64-bit, these changes save between five and eight cycles (9-13% overall) for short strings (<32), Longer aligned strings see slight improvement of 1-3% due to bypassing the shifts and the instruction rearranging.
2012-05-26Optimize handling of denormals in logb/logbf/logblAndreas Schwab
2012-05-22PowerPC: libm ABI updateAdhemerval Zanella
Update for libm abilist for POWER6 and POWER7.
2012-05-15PowerPC - logb[f|l] optimization for POWER7Adhemerval Zanella
This patch provides optimized logb (1.2x on PPC32 and 2.5x on PPC64), logbf (1.1x on PPC32 and 2.2x on PPC64), and logbl (1.3x on PPC32 and 50% on PPC64) for the POWER7 processor.
2012-02-09Replace FSF snail mail address with URLs.Paul Eggert
2011-12-17Optimized strcasecmp for Power7Adhemerval Zanella
2011-12-17Simplify code for accessing powerpc GOTWill Schmidt
2011-09-07power7 strncmp optimizationWill Schmidt
2011-09-07power7 memcpy VSX optimizationsWill Schmidt
2011-04-22Remove doubled words.Jim Meyering
2011-04-17Fix POWER4/POWER7 optimized strncmp to not read past differing bytesAndreas Schwab
2010-11-05power7-optimized mempcpyLuis Machado
2010-08-19powerpc: Various P7-optimized string functionsLuis Machado
2010-06-30powerpc: Re-work the Implies structureLuis Machado
This patch tries to organize the implies files for ppc, since there are a number of processors and most of them are compatible with each other (backwards compatible). Having in mind that we start the search for processor-specific files in the sysdeps/unix/sysv/linux tree (sysdeps/unix/sysv/linux/powerpc/powerpc[32|64]/[processor]/fpu to be exact), we would like to grab any linux-specific code from that tree prior to going through the other tree (sysdeps/powerpc/...). For that, i removed the Implies files that were originally inside the fpu directories and placed then in the non-fpu directories (still inside the unix/sysv/linux tree). If no processor-specific/linux-specific files could be found, we "imply" the other tree's (sysdeps/powerpc/...) fpu directory for that specific processor AND also the non-fpu directory for that same tree. If, again, no processor-specific code is found, we read another Implies file that will point to the most compatible processor that we should grab code from, and so on, until we reach the power4 processor. So, in summary, the Implies files will live inside these directories now: * sysdeps/unix/sysv/linux/powerpc/powerpc[32|64]/[processor] * sysdeps/powerpc/powerpc[32|64]/[processor] Practical example of the order we will use to pick power6-specific code with the new structure. sysdeps/unix/sysv/linux/powerpc/powerpc[32|64]/power6/fpu -> sysdeps/unix/sysv/linux/powerpc/powerpc[32|64]/power6 -> sysdeps/powerpc/powerpc[32|64]/power6/fpu -> sysdeps/powerpc/powerpc[32|64]/power6 -> sysdeps/powerpc/powerpc[32|64]/power5+/fpu -> sysdeps/powerpc/powerpc[32|64]/power5+ -> sysdeps/powerpc/powerpc[32|64]/power5/fpu -> sysdeps/powerpc/powerpc[32|64]/power5 -> sysdeps/powerpc/powerpc[32|64]/power4/fpu -> sysdeps/powerpc/powerpc[32|64]/power4 (from here, it'll go to the generic path as usual)
2010-06-14Fix whitespaces.Ulrich Drepper
2010-06-14power7 string compare optimizationsLuis Machado
2010-05-28Small fix to POWER7 32-bit memcpyLuis Machado
2010-05-24Small fix to POWER7 32-bit memsetLuis Machado
2010-05-20Add missing files.Luis Machado
2010-03-10Fix whitespace issues.Ulrich Drepper
2010-03-10power7-optimized 64-bit and 32-bit memcpyLuis Machado
2010-02-10Fix POWER7 ImpliesLuis Machado
2010-02-09Fix whitespace issues.Ulrich Drepper
2010-02-09power7-optimized classification functionsLuis Machado
2009-03-12* sysdeps/x86_64/dl-machine.h (elf_machine_rela): Add branchUlrich Drepper
prediction. A few size optimizations.
2009-03-02* sysdeps/powerpc/powerpc32/power7/fpu/Implies: New file.Ulrich Drepper
* sysdeps/powerpc/powerpc32/power7/Implies: Likewise. * sysdeps/powerpc/powerpc64/power7/fpu/Implies: Likewise. * sysdeps/powerpc/powerpc64/power7/Implies: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/power7/fpu/Implies: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/power7/fpu/Implies: Likewise.
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