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| author | Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> | 2012-05-18 08:50:33 -0500 |
|---|---|---|
| committer | Ryan S. Arnold <rsa@linux.vnet.ibm.com> | 2012-05-18 10:15:30 -0500 |
| commit | a88b64b9bbf8b2a315206e211250c5529534a477 (patch) | |
| tree | fa8db8f25494143a6a4396026e5243a514cd50a0 /sysdeps/powerpc/powerpc64/power4 | |
| parent | 610b86225e8d8ebd1400b4c083a04b624b4417b1 (diff) | |
| download | glibc-a88b64b9bbf8b2a315206e211250c5529534a477.tar.gz glibc-a88b64b9bbf8b2a315206e211250c5529534a477.tar.xz glibc-a88b64b9bbf8b2a315206e211250c5529534a477.zip | |
[PowerPC] Remove -ftree-loop-linear from Makefiles
In the past the "-ftree-loop-linear" switch provided a measurable improvement in performance for certain functions. At some point it was assigned as the responsibility of Graphite in GCC. It has been found that even with Graphite enabled these flags no longer perform any appreciable improvement over the baseline. Graphite now has some open bugs which need to be fixed in order for it to provide measurable performance improvements but it lacks active development. As a result some compiler distributors may disable Graphite. If Graphite is disabled then building GLIBC will fail if the "-ftree-loop-linear" switch is used. This patch removes the use of "-ftree-loop-linear" as unnecessary.
Diffstat (limited to 'sysdeps/powerpc/powerpc64/power4')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/power4/Makefile | 4 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc64/power4/fpu/Makefile | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/sysdeps/powerpc/powerpc64/power4/Makefile b/sysdeps/powerpc/powerpc64/power4/Makefile index 60aa508ba4..ba06adb5d0 100644 --- a/sysdeps/powerpc/powerpc64/power4/Makefile +++ b/sysdeps/powerpc/powerpc64/power4/Makefile @@ -1,6 +1,6 @@ # Makefile fragment for POWER4/5/5+. ifeq ($(subdir),string) -CFLAGS-wordcopy.c += --param max-variable-expansions-in-unroller=2 --param max-unroll-times=2 -funroll-loops -fpeel-loops -ftree-loop-linear -CFLAGS-memmove.c += --param max-variable-expansions-in-unroller=2 --param max-unroll-times=2 -funroll-loops -fpeel-loops -ftree-loop-linear +CFLAGS-wordcopy.c += --param max-variable-expansions-in-unroller=2 --param max-unroll-times=2 -funroll-loops -fpeel-loops +CFLAGS-memmove.c += --param max-variable-expansions-in-unroller=2 --param max-unroll-times=2 -funroll-loops -fpeel-loops endif diff --git a/sysdeps/powerpc/powerpc64/power4/fpu/Makefile b/sysdeps/powerpc/powerpc64/power4/fpu/Makefile index 89dfa5ef35..f8bb3ef04b 100644 --- a/sysdeps/powerpc/powerpc64/power4/fpu/Makefile +++ b/sysdeps/powerpc/powerpc64/power4/fpu/Makefile @@ -1,5 +1,5 @@ # Makefile fragment for POWER4/5/5+ platforms with FPU. ifeq ($(subdir),math) -CFLAGS-mpa.c += --param max-unroll-times=4 -funroll-loops -fpeel-loops -ftree-loop-linear +CFLAGS-mpa.c += --param max-unroll-times=4 -funroll-loops -fpeel-loops endif |