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| author | Steve Ellcey <sellcey@mips.com> | 2014-12-19 14:39:18 -0800 |
|---|---|---|
| committer | Steve Ellcey <sellcey@mips.com> | 2014-12-19 14:39:18 -0800 |
| commit | 8b2800c0fb18f83d1ee8083d0a7ac15e0b011e73 (patch) | |
| tree | 883f5ead649507e76a7ecfab18bf7fa5f08d4cc6 /sysdeps/mips/mips64/submul_1.S | |
| parent | 04d55561978eb59e36ced8fc1e8d87a72ef70072 (diff) | |
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2014-12-19 Steve Ellcey <sellcey@imgtec.com>
* sysdeps/mips/addmul_1.S (__mpn_addmul_1): Use mulu/muhu instead
of multu on MIPSr6.
* sysdeps/mips/mul_1.S (__mpn_mul_1): Ditto.
* sysdeps/mips/submul_1.S (__mpn_submul_1): Ditto.
* sysdeps/mips/mips64/addmul_1.S (__mpn_addmul_1): Ditto.
* sysdeps/mips/mips64/mul_1.S (__mpn_mul_1): Ditto.
* sysdeps/mips/mips64/submul_1.S (__mpn_submul_1): Ditto.
Diffstat (limited to 'sysdeps/mips/mips64/submul_1.S')
| -rw-r--r-- | sysdeps/mips/mips64/submul_1.S | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/sysdeps/mips/mips64/submul_1.S b/sysdeps/mips/mips64/submul_1.S index bf24123bde..84e9a91d00 100644 --- a/sysdeps/mips/mips64/submul_1.S +++ b/sysdeps/mips/mips64/submul_1.S @@ -45,7 +45,12 @@ ENTRY (__mpn_submul_1) # warm up phase 1 daddiu $5,$5,8 +#if __mips_isa_rev < 6 dmultu $8,$7 +#else + dmulu $11,$8,$7 + dmuhu $12,$8,$7 +#endif daddiu $6,$6,-1 beq $6,$0,L(LC0) @@ -56,11 +61,21 @@ ENTRY (__mpn_submul_1) ld $8,0($5) # load new s1 limb as early as possible L(Loop): ld $10,0($4) +#if __mips_isa_rev < 6 mflo $3 mfhi $9 +#else + move $3,$11 + move $9,$12 +#endif daddiu $5,$5,8 daddu $3,$3,$2 # add old carry limb to low product limb +#if __mips_isa_rev < 6 dmultu $8,$7 +#else + dmulu $11,$8,$7 + dmuhu $12,$8,$7 +#endif ld $8,0($5) # load new s1 limb as early as possible daddiu $6,$6,-1 # decrement loop counter sltu $2,$3,$2 # carry from previous addition -> $2 @@ -74,11 +89,21 @@ L(Loop): ld $10,0($4) # cool down phase 1 L(LC1): ld $10,0($4) +#if __mips_isa_rev < 6 mflo $3 mfhi $9 +#else + move $3,$11 + move $9,$12 +#endif daddu $3,$3,$2 sltu $2,$3,$2 +#if __mips_isa_rev < 6 dmultu $8,$7 +#else + dmulu $11,$8,$7 + dmuhu $12,$8,$7 +#endif dsubu $3,$10,$3 sgtu $10,$3,$10 daddu $2,$2,$10 @@ -88,8 +113,13 @@ L(LC1): ld $10,0($4) # cool down phase 0 L(LC0): ld $10,0($4) +#if __mips_isa_rev < 6 mflo $3 mfhi $9 +#else + move $3,$11 + move $9,$12 +#endif daddu $3,$3,$2 sltu $2,$3,$2 dsubu $3,$10,$3 |