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Unified Diff: gcc/gmp/mpn/x86/k7/mmx/com_n.asm

Issue 3050029: [gcc] GCC 4.5.0=>4.5.1 (Closed) Base URL: ssh://git@gitrw.chromium.org:9222/nacl-toolchain.git
Patch Set: Created 10 years, 5 months ago
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Index: gcc/gmp/mpn/x86/k7/mmx/com_n.asm
diff --git a/gcc/gmp/mpn/x86/k7/mmx/com_n.asm b/gcc/gmp/mpn/x86/k7/mmx/com_n.asm
deleted file mode 100644
index 068c01f0766f81a17835773c529a985794650d0c..0000000000000000000000000000000000000000
--- a/gcc/gmp/mpn/x86/k7/mmx/com_n.asm
+++ /dev/null
@@ -1,114 +0,0 @@
-dnl AMD Athlon mpn_com_n -- mpn bitwise one's complement.
-
-dnl Copyright 2002 Free Software Foundation, Inc.
-dnl
-dnl This file is part of the GNU MP Library.
-dnl
-dnl The GNU MP Library is free software; you can redistribute it and/or
-dnl modify it under the terms of the GNU Lesser General Public License as
-dnl published by the Free Software Foundation; either version 3 of the
-dnl License, or (at your option) any later version.
-dnl
-dnl The GNU MP Library is distributed in the hope that it will be useful,
-dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
-dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-dnl Lesser General Public License for more details.
-dnl
-dnl You should have received a copy of the GNU Lesser General Public License
-dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
-
-include(`../config.m4')
-
-
-C K7: 1.0 cycles/limb
-
-
-C void mpn_com_n (mp_ptr dst, mp_srcptr src, mp_size_t size);
-C
-C The loop form below is necessary for the claimed speed. It needs to be
-C aligned to a 16 byte boundary and only 16 bytes long. Maybe that's so it
-C fits in a BTB entry. The adjustments to %eax and %edx avoid offsets on
-C the movq's and achieve the necessary size.
-C
-C If both src and dst are 4mod8, the loop runs at 1.5 c/l. So long as one
-C of the two is 0mod8, it runs at 1.0 c/l. On that basis dst is checked
-C (offset by the size, as per the loop addressing) and one high limb
-C processed separately to get alignment.
-C
-C The padding for the nails case is unattractive, but shouldn't cost any
-C cycles. Explicit .byte's guarantee the desired instructions, at a point
-C where we're probably stalled waiting for loads anyway.
-C
-C Enhancements:
-C
-C The combination load/pxor/store might be able to be unrolled to approach
-C 0.5 c/l if desired.
-
-defframe(PARAM_SIZE,12)
-defframe(PARAM_SRC, 8)
-defframe(PARAM_DST, 4)
-
- TEXT
- ALIGN(16)
-
-PROLOGUE(mpn_com_n)
-deflit(`FRAME',0)
-
- movl PARAM_DST, %edx
- movl PARAM_SIZE, %ecx
- pcmpeqd %mm7, %mm7
-
- leal (%edx,%ecx,4), %eax
- andl $4, %eax
-ifelse(GMP_NAIL_BITS,0,,
-` psrld $GMP_NAIL_BITS, %mm7') C GMP_NUMB_MASK
-
- movl PARAM_SRC, %eax
- movd -4(%eax,%ecx,4), %mm0 C src high limb
-
-ifelse(GMP_NAIL_BITS,0,,
-` C padding for alignment below
- .byte 0x8d, 0xb6, 0x00, 0x00, 0x00, 0x00 C lea 0(%esi),%esi
- .byte 0x8d, 0xbf, 0x00, 0x00, 0x00, 0x00 C lea 0(%edi),%edi
-')
-
- jz L(aligned)
-
- pxor %mm7, %mm0
- movd %mm0, -4(%edx,%ecx,4) C dst high limb
- decl %ecx
- jz L(done)
-L(aligned):
-
- addl $4, %eax
- addl $4, %edx
- decl %ecx
- jz L(one)
-
- C offset 0x30 for no nails, or 0x40 for nails
- ALIGN(16)
-L(top):
- C eax src
- C ebx
- C ecx counter
- C edx dst
-
- subl $2, %ecx
- movq (%eax,%ecx,4), %mm0
- pxor %mm7, %mm0
- movq %mm0, (%edx,%ecx,4)
- jg L(top)
-
- jnz L(done) C if size even
-
-L(one):
- movd -4(%eax), %mm0 C src low limb
- pxor %mm7, %mm0
- movd %mm0, -4(%edx) C dst low limb
-
-L(done):
- emms
-
- ret
-
-EPILOGUE()
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