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(parent: 674ea88) | patch
powerpc: Optimized strcpy for POWER9
authorAnton Blanchard via Libc-alpha <libc-alpha@sourceware.org>
Wed, 13 May 2020 23:00:26 +0000 (09:00 +1000)
committerPaul E. Murphy <murphyp@linux.vnet.ibm.com>
Mon, 18 May 2020 13:26:22 +0000 (08:26 -0500)
commit39037048502d52ab6422c18f2d178d6228d2c7b9
treef1362994b4b9665a2c8843b70e92fc30f49422d6tree | snapshot
parent674ea88294bfb8d89878a0ebbbcec38a85e118a5commit | diff
powerpc: Optimized strcpy for POWER9

This version uses VSX store vector with length instructions and is
significantly faster on small strings and relatively unaligned large
strings, compared to the POWER8 version. A few examples:

                                        __strcpy_power9  __strcpy_power8
Length   16, alignments in bytes  0/ 0: 2.52454          4.62695
Length  412, alignments in bytes  4/ 0: 11.6             22.9185
sysdeps/powerpc/powerpc64/le/power9/strcpy.S [new file with mode: 0644] blob
sysdeps/powerpc/powerpc64/multiarch/Makefile diff | blob | history
sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c diff | blob | history
sysdeps/powerpc/powerpc64/multiarch/strcpy-power9.S [new file with mode: 0644] blob
sysdeps/powerpc/powerpc64/multiarch/strcpy.c diff | blob | history
Domain: System / Toolchain;