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| author | Patrick McGehearty <patrick.mcgehearty@oracle.com> | 2017-12-13 18:12:17 -0200 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-12-14 08:47:38 -0200 |
| commit | 1b6e07f8e06240eff4f0d0a53161508de582cbc6 (patch) | |
| tree | 21f7a24d3393d303dd1b103fec25611fc10248a1 /sysdeps/sparc/sparc32 | |
| parent | 767a26d6a06c4d5dd382c833ac8caa80948a9944 (diff) | |
| download | glibc-1b6e07f8e06240eff4f0d0a53161508de582cbc6.zip glibc-1b6e07f8e06240eff4f0d0a53161508de582cbc6.tar.gz glibc-1b6e07f8e06240eff4f0d0a53161508de582cbc6.tar.bz2 | |
sparc: M7 optimized memcpy/mempcpy/memmove
Support added to identify Sparc M7/T7/S7/M8/T8 processor capability.
Performance tests run on Sparc S7 using new code and old niagara4 code.
Optimizations for memcpy also apply to mempcpy and memmove
where they share code. Optimizations for memset also apply
to bzero as they share code.
For memcpy/mempcpy/memmove, performance comparison with niagara4 code:
Long word aligned data
0-127 bytes - minimal changes
128-1023 bytes - 7-30% gain
1024+ bytes - 1-7% gain (in cache); 30-100% gain (out of cache)
Word aligned data
0-127 bytes - 50%+ gain
128-1023 bytes - 10-200% gain
1024+ bytes - 0-15% gain (in cache); 5-50% gain (out of cache)
Unaligned data
0-127 bytes - 0-70%+ gain
128-447 bytes - 40-80%+ gain
448-511 bytes - 1-3% loss
512-4096 bytes - 2-3% gain (in cache); 0-20% gain (out of cache)
4096+ bytes - ± 3% (in cache); 20-50% gain (out of cache)
Tested in sparcv9-*-* and sparc64-*-* targets in both multi and
non-multi arch configurations.
Patrick McGehearty <patrick.mcgehearty@oracle.com>
Adhemerval Zanella <adhemerval.zanella@linaro.org>
* sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
(sysdeps_routines): Add memcpy-memmove-niagara7 and memmove-ultra1.
* sysdeps/sparc/sparc64/multiarch/Makefile (sysdeps_routines):
Likewise.
* sysdeps/sparc/sparc32/sparcv9/multiarch/memcpy-memmove-niagara7.S:
New file.
* sysdeps/sparc/sparc32/sparcv9/multiarch/memmove-ultra1.S: Likewise.
* sysdeps/sparc/sparc32/sparcv9/multiarch/rtld-memmove.c: Likewise.
* sysdeps/sparc/sparc64/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Add __memcpy_niagara7, __mempcpy_niagara7,
and __memmove_niagara7.
* sysdeps/sparc/sparc64/multiarch/ifunc-memcpy.h (IFUNC_SELECTOR):
Add niagara7 option.
* sysdeps/sparc/sparc64/multiarch/memmove.c: New file.
* sysdeps/sparc/sparc64/multiarch/ifunc-memmove.h: Likewise.
* sysdeps/sparc/sparc64/multiarch/memcpy-memmove-niagara7.S: Likewise.
* sysdeps/sparc/sparc64/multiarch/memmove-ultra1.S: Likewise.
* sysdeps/sparc/sparc64/multiarch/rtld-memmove.c: Likewise.
Diffstat (limited to 'sysdeps/sparc/sparc32')
4 files changed, 9 insertions, 1 deletions
diff --git a/sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile b/sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile index e12636b..869f063 100644 --- a/sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile +++ b/sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile @@ -9,5 +9,6 @@ endif ifeq ($(subdir),string) sysdep_routines += memcpy-ultra3 memcpy-niagara1 memcpy-niagara2 \ memset-niagara1 memcpy-niagara4 memset-niagara4 \ - memcpy-ultra1 memset-ultra1 + memcpy-ultra1 memset-ultra1 memcpy-memmove-niagara7 \ + memmove-ultra1 endif diff --git a/sysdeps/sparc/sparc32/sparcv9/multiarch/memcpy-memmove-niagara7.S b/sysdeps/sparc/sparc32/sparcv9/multiarch/memcpy-memmove-niagara7.S new file mode 100644 index 0000000..16da150 --- /dev/null +++ b/sysdeps/sparc/sparc32/sparcv9/multiarch/memcpy-memmove-niagara7.S @@ -0,0 +1,2 @@ +#define XCC icc +#include <sparc64/multiarch/memcpy-memmove-niagara7.S> diff --git a/sysdeps/sparc/sparc32/sparcv9/multiarch/memmove-ultra1.S b/sysdeps/sparc/sparc32/sparcv9/multiarch/memmove-ultra1.S new file mode 100644 index 0000000..35ba76b --- /dev/null +++ b/sysdeps/sparc/sparc32/sparcv9/multiarch/memmove-ultra1.S @@ -0,0 +1,4 @@ +#undef libc_hidden_builtin_def +#define libc_hidden_builtin_def(name) +#define memmove __memmove_ultra1 +#include <sysdeps/sparc/sparc32/sparcv9/memmove.S> diff --git a/sysdeps/sparc/sparc32/sparcv9/multiarch/rtld-memmove.c b/sysdeps/sparc/sparc32/sparcv9/multiarch/rtld-memmove.c new file mode 100644 index 0000000..2c88061 --- /dev/null +++ b/sysdeps/sparc/sparc32/sparcv9/multiarch/rtld-memmove.c @@ -0,0 +1 @@ +#include <sparc64/multiarch/rtld-memmove.c> |