diff options
| author | Kevin Ryde <user42@zip.com.au> | 2001-10-30 23:00:37 +0100 |
|---|---|---|
| committer | Kevin Ryde <user42@zip.com.au> | 2001-10-30 23:00:37 +0100 |
| commit | 8ba80a04c36951bef4677bf233fabcd9cf1741f2 (patch) | |
| tree | 5e9d751a4815061b089b6c45d344bbbbf8df1821 /mpn | |
| parent | 8bda0e76aa139c4850d780c8f98a1df9ef1f683d (diff) | |
| download | gmp-8ba80a04c36951bef4677bf233fabcd9cf1741f2.tar.gz | |
Save 2 cycles with jg:
* mpn/x86/k6/mod_34lsub1.asm: New file.
Diffstat (limited to 'mpn')
| -rw-r--r-- | mpn/x86/k6/mod_34lsub1.asm | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/mpn/x86/k6/mod_34lsub1.asm b/mpn/x86/k6/mod_34lsub1.asm index 6d39cfeea..4056f5427 100644 --- a/mpn/x86/k6/mod_34lsub1.asm +++ b/mpn/x86/k6/mod_34lsub1.asm @@ -87,17 +87,15 @@ L(one): L(three_or_more): - C eax size + C eax size-2 C ebx C ecx C edx src movl %ebx, SAVE_EBX + xorl %ebx, %ebx movl %esi, SAVE_ESI - decl %eax C size-3 - - xorl %ebx, %ebx pushl %edi FRAME_pushl() xorl %esi, %esi @@ -120,22 +118,21 @@ L(top): adcl -4(%edx), %edi decl %eax - jns L(top) + jg L(top) C ecx is -3, -2 or -1 representing 0, 1 or 2 more limbs, respectively - leal 3(%eax), %eax movb $0, %cl + incl %eax - decl %eax js L(combine) C 0 more adcl 0(%edx), %ebx movb $8, %cl - decl %eax + js L(combine) C 1 more adcl 4(%edx), %esi @@ -149,14 +146,14 @@ L(combine): shll %cl, %edx C carry movl %ebx, %eax C 0mod3 - shrl $24, %ebx C 0mod3 high - andl $0x00FFFFFF, %eax C 0mod3 low + shrl $24, %eax C 0mod3 high + andl $0x00FFFFFF, %ebx C 0mod3 low subl %edx, %eax C apply carry movl %esi, %ecx C 1mod3 shrl $16, %esi C 1mod3 high - addl %ebx, %eax C apply 0mod3 high + addl %ebx, %eax C apply 0mod3 low andl $0x0000FFFF, %ecx addl %esi, %eax C apply 1mod3 high |