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9 Commits

Author SHA1 Message Date
Alan Modra
fe6e95d717 PowerPC LE memcmp 
http://sourceware.org/ml/libc-alpha/2013-08/msg00102.html

This is a rather large patch due to formatting and renaming.  The
formatting changes were to make it possible to compare power7 and
power4 versions of memcmp.  Using different register defines came
about while I was wrestling with the code, trying to find spare
registers at one stage.  I found it much simpler if we refer to a reg
by the same name throughout a function, so it's better if short-term
multiple use regs like rTMP are referred to using their register
number.  I made the cr field usage changes when attempting to reload
rWORDn regs in the exit path to byte swap before comparing when
little-endian.  That proved a bad idea due to the pipelining involved
in the main loop;  Offsets to reload the regs were different first
time around the loop..  Anyway, I left the cr field usage changes in
place for consistency.

Aside from these more-or-less cosmetic changes, I fixed a number of
places where an early exit path restores regs unnecessarily, removed
some dead code, and optimised one or two exits.

	* sysdeps/powerpc/powerpc64/power7/memcmp.S: Add little-endian support.
	Formatting.  Consistently use rXXX register defines or rN defines.
	Use early exit labels that avoid restoring unused non-volatile regs.
	Make cr field use more consistent with rWORDn compares.  Rename
	regs used as shift registers for unaligned loop, using rN defines
	for short lifetime/multiple use regs.
	* sysdeps/powerpc/powerpc64/power4/memcmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/power7/memcmp.S: Likewise.  Exit with
	addi 1,1,64 to pop stack frame.  Simplify return value code.
	* sysdeps/powerpc/powerpc32/power4/memcmp.S: Likewise.
 2013-10-04 10:40:56 +09:30
Joseph Myers
9c84384cc1 Remove trailing whitespace. 2013-06-05 20:44:03 +00:00
Joseph Myers
2d67d91ac0 Remove powerpc64 bounded-pointers code. 2013-03-06 00:10:21 +00:00
Anton Blanchard
2ccdea26f2 Fix spelling errors in sysdeps/powerpc files. 2013-01-07 11:20:53 -06:00
Joseph Myers
568035b787 Update copyright notices with scripts/update-copyrights. 2013-01-02 19:05:09 +00:00
Paul Eggert
59ba27a63a Replace FSF snail mail address with URLs. 2012-02-09 23:18:22 +00:00
Jim Meyering
ded5b9b7c7 Remove doubled words. 2011-04-22 21:34:32 -04:00
Ulrich Drepper
a88f47a72f * sysdeps/powerpc/powerpc32/power6/memset.S: Update comments. 
Specify .machine power6 to get ISA-V2.0 branch hints.  Unroll loops
	and avoid branch misspredicts for > 31 bytes memset case.
	* sysdeps/powerpc/powerpc64/power6/memset.S: Likewise.
	Remove toc ref to __cache_line_size.

	* sysdeps/powerpc/powerpc32/power4/memcmp.S: Specify .machine power4
	to get ISA-V2.0 branch hints.
	* sysdeps/powerpc/powerpc32/power4/memcpy.S: Likewise
	* sysdeps/powerpc/powerpc32/power4/memset.S: Likewise
	* sysdeps/powerpc/powerpc32/power6/memcpy.S: Likewise.
	* sysdeps/powerpc/powerpc64/power4/memcmp.S: Likewise.
	* sysdeps/powerpc/powerpc64/power4/memcpy.S: Likewise.
	* sysdeps/powerpc/powerpc64/power4/memset.S: Likewise.
	Remove toc ref to __cache_line_size.

	* sysdeps/powerpc/powerpc32/power6/fpu/s_llrint.S:
	Include math_ldbl_opt.h.
 2007-07-12 18:38:01 +00:00
Ulrich Drepper
04067002e8 * sysdeps/powerpc/powerpc32/970/fpu/Implies: New file. 
* sysdeps/powerpc/powerpc32/power5/fpu/Implies: New file.
	* sysdeps/powerpc/powerpc32/power5+/fpu/Implies: New file.
	* sysdeps/powerpc/powerpc32/power6/fpu/Implies: New file.
	* sysdeps/powerpc/powerpc32/power6x/fpu/Implies: New file.
	* sysdeps/powerpc/powerpc64/970/fpu/Implies: New file.
	* sysdeps/powerpc/powerpc64/power5/fpu/Implies: New file.
	* sysdeps/powerpc/powerpc64/power5+/fpu/Implies: New file.
	* sysdeps/powerpc/powerpc64/power6/fpu/Implies: New file.
	* sysdeps/powerpc/powerpc64/power6x/fpu/Implies: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/970/fpu/Implies: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/power4/fpu/Implies:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/power5/fpu/Implies:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/power5+/fpu/Implies:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/power6/fpu/Implies:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/power6x/fpu/Implies:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/970/fpu/Implies: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/power4/fpu/Implies:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/power5/fpu/Implies:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/power5+/fpu/Implies:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/power6/fpu/Implies:
	New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/power6x/fpu/Implies:
	New file.

2007-05-31  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/powerpc64/fpu/s_llrint.S: Move.
	* sysdeps/powerpc/powerpc32/power4/fpu/s_llrint.S: To here.
	* sysdeps/powerpc/powerpc32/powerpc64/fpu/s_llrintf.S: Move.
	* sysdeps/powerpc/powerpc32/power4/fpu/s_llrintf.S: To here.
	* sysdeps/powerpc/powerpc32/powerpc64/fpu/s_llround.S: Move.
	* sysdeps/powerpc/powerpc32/power4/fpu/s_llround.S: To here.
	* sysdeps/powerpc/powerpc32/powerpc64/fpu/s_llroundf.S: Move.
	* sysdeps/powerpc/powerpc32/power4/fpu/s_llroundf.S: To here.

2007-05-22  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/power5+/fpu/s_round.S
	(LONG_DOUBLE_COMPAT): Specify correct version, GLIBC_2_1.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_trunc.S
	(LONG_DOUBLE_COMPAT): Specify correct version, GLIBC_2_1.
	* sysdeps/powerpc/powerpc64/power5+/fpu/s_round.S
	(LONG_DOUBLE_COMPAT): Specify correct version, GLIBC_2_1.
	* sysdeps/powerpc/powerpc64/power5+/fpu/s_trunc.S
	(LONG_DOUBLE_COMPAT): Specify correct version, GLIBC_2_1.

2007-05-21  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/power4/fpu/slowexp.c: New file.
	* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt.c: New file.
	* sysdeps/powerpc/powerpc64/power4/fpu/slowexp.c: New file.
	* sysdeps/powerpc/powerpc64/power4/fpu/w_sqrt.c: New file.

2007-03-15  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/powerpc64/fpu/s_llrint.S
	[LONG_DOUBLE_COMPAT]: Add compat_symbol for llrintl@@GLIBC_2_1.

2006-02-13  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/power6/fpu/s_llrint.S: New File
	* sysdeps/powerpc/powerpc32/power6/fpu/s_llrintf.S: New File
	* sysdeps/powerpc/powerpc32/power6/fpu/s_llround.S: New File
	* sysdeps/powerpc/powerpc32/power6/fpu/s_llroundf.S: New File

2006-10-20  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/power4/fpu/slowpow.c: New file.
	* sysdeps/powerpc/powerpc64/power4/fpu/slowpow.c: New file.

2006-10-03  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/powerpc64/fpu/s_llround.S: New file.
	* sysdeps/powerpc/powerpc32/powerpc64/fpu/s_llroundf.S: New file.

	* sysdeps/powerpc/powerpc32/powerpc64/fpu/Makefile: Moved.
	* sysdeps/powerpc/powerpc32/powerpc64/fpu/mpa.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/Makefile: To here.
	* sysdeps/powerpc/powerpc32/power4/fpu/mpa.c: Likewise.

2006-09-29  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/power6x/fpu/s_lrint.S: New file.
	* sysdeps/powerpc/powerpc32/power6x/fpu/s_lround.S: New file.
	* sysdeps/powerpc/powerpc64/power6x/fpu/s_llrint.S: New file.
	* sysdeps/powerpc/powerpc64/power6x/fpu/s_llround.S: New file.

2006-09-28  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/power5+/fpu/s_llround.S: New file.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_llroundf.S: New file.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_lround.S: New file.
	* sysdeps/powerpc/powerpc32/power6x/fpu/Implies: New file.
	* sysdeps/powerpc/powerpc64/power5+/fpu/s_llround.S: New file.
	* sysdeps/powerpc/powerpc64/power6x/fpu/Implies: New file.

2006-08-31  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/powerpc64/fpu/Makefile: New file.
	* sysdeps/powerpc/powerpc32/powerpc64/fpu/mpa.c: New file.
	* sysdeps/powerpc/powerpc64/power4/fpu/Makefile: New file.
	* sysdeps/powerpc/powerpc64/power4/fpu/mpa.c: New file.

2006-06-15  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/power5+/fpu/s_ceil.S: New file.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_ceilf.S: New file.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_floor.S: New file.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_floorf.S: New file.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_round.S: New file.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_roundf.S: New file.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_trunc.S: New file.
	* sysdeps/powerpc/powerpc32/power5+/fpu/s_truncf.S: New file.
	* sysdeps/powerpc/powerpc64/power5+/fpu/s_ceil.S: New file.
	* sysdeps/powerpc/powerpc64/power5+/fpu/s_ceilf.S: New file.
	* sysdeps/powerpc/powerpc64/power5+/fpu/s_floor.S: New file.
	* sysdeps/powerpc/powerpc64/power5+/fpu/s_floorf.S: New file.
	* sysdeps/powerpc/powerpc64/power5+/fpu/s_round.S: New file.
	* sysdeps/powerpc/powerpc64/power5+/fpu/s_roundf.S: New file.
	* sysdeps/powerpc/powerpc64/power5+/fpu/s_trunc.S: New file.
	* sysdeps/powerpc/powerpc64/power5+/fpu/s_truncf.S: New file.

2006-03-20  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/powerpc64/fpu/s_llrint.S: New file.
	* sysdeps/powerpc/powerpc32/powerpc64/fpu/s_llrintf.S: New file.

2007-06-01  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/power6/memset.S: New file.
	* sysdeps/powerpc/powerpc64/power6/memset.S: New file.

2007-05-31  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/970/Implies: New file.
	* sysdeps/powerpc/powerpc32/power5/Implies: New file.
	* sysdeps/powerpc/powerpc32/power5+/Implies: New file.
	* sysdeps/powerpc/powerpc32/power6/Implies: New file.
	* sysdeps/powerpc/powerpc32/power6x/Implies: New file.
	* sysdeps/powerpc/powerpc64/970/Implies: New file.
	* sysdeps/powerpc/powerpc64/power5/Implies: New file.
	* sysdeps/powerpc/powerpc64/power5+/Implies: New file.
	* sysdeps/powerpc/powerpc64/power6/Implies: New file.
	* sysdeps/powerpc/powerpc64/power6x/Implies: New file.

2007-05-21  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/power4/memset.S: New file

2007-03-13  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc64/memcpy.S: Improve aligned loop to minimize
	branch miss-predicts. Ensure that cache line crossing does not impact
	dispatch grouping.

2006-12-13  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc64/power4/memcopy.h: Replace with include
	"../../powerpc32/power4/memcopy.h".
	* sysdeps/powerpc/powerpc64/power4/wordcopy.c: Replace with include
	"../../powerpc32/power4/wordcopy.c".

2006-10-03  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/powerpc64/Makefile: Moved.
	* sysdeps/powerpc/powerpc32/powerpc64/memcopy.h: Likewise.
	* sysdeps/powerpc/powerpc32/powerpc64/wordcopy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/Makefile: To here.
	* sysdeps/powerpc/powerpc32/power4/memcopy.h: Likewise.
	* sysdeps/powerpc/powerpc32/power4/wordcopy.c: Likewise.

2006-09-10  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/power6/memcpy.S: New file.

2006-08-31  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/power6/wordcopy.c: New file.
	* sysdeps/powerpc/powerpc32/powerpc64/Makefile: New file.
	* sysdeps/powerpc/powerpc32/powerpc64/memcopy.h: New file.
	* sysdeps/powerpc/powerpc32/powerpc64/wordcopy.c: New file.
	* sysdeps/powerpc/powerpc64/power4/Makefile: New file.
	* sysdeps/powerpc/powerpc64/power4/memcopy.h: New file.
	* sysdeps/powerpc/powerpc64/power4/wordcopy.c: New file.
	* sysdeps/powerpc/powerpc64/power6/wordcopy.c: New file.

2006-07-06  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc64/power6/memcpy.S: New file.

2006-03-20  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/power4/memcmp.S: New file.
	* sysdeps/powerpc/powerpc32/power4/memcpy.S: New file.
	* sysdeps/powerpc/powerpc32/power4/memset.S: New file.
	* sysdeps/powerpc/powerpc32/power4/strncmp.S: New file.
	* sysdeps/powerpc/powerpc64/power4/memcmp.S: New file.
	* sysdeps/powerpc/powerpc64/power4/memcpy.S: New file.
	* sysdeps/powerpc/powerpc64/power4/strncmp.S: New file.
 2007-06-03 21:20:06 +00:00