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| author | Torbjorn Granlund <tg@gmplib.org> | 2018-11-11 13:59:17 +0100 |
|---|---|---|
| committer | Torbjorn Granlund <tg@gmplib.org> | 2018-11-11 13:59:17 +0100 |
| commit | 0c011e4e2c3e3d6bff229b923aef0e544c15079d (patch) | |
| tree | 63cc4adcc94dc838ef468f8b059823300c1e543f /mpn/powerpc64 | |
| parent | c8e77e22eb51e7f26ac0c9dc4116fabc384e33f2 (diff) | |
| download | gmp-0c011e4e2c3e3d6bff229b923aef0e544c15079d.tar.gz | |
Tweak for slightly better speed.
* mpn/powerpc64/mode64/p9/addmul_1.asm: Tweak for slightly better
speed.
Diffstat (limited to 'mpn/powerpc64')
| -rw-r--r-- | mpn/powerpc64/mode64/p9/addmul_1.asm | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/mpn/powerpc64/mode64/p9/addmul_1.asm b/mpn/powerpc64/mode64/p9/addmul_1.asm index 5b6de92b0..dfaf31b6d 100644 --- a/mpn/powerpc64/mode64/p9/addmul_1.asm +++ b/mpn/powerpc64/mode64/p9/addmul_1.asm @@ -1,6 +1,6 @@ dnl POWER9 mpn_addmul_1. -dnl Copyright 2017 Free Software Foundation, Inc. +dnl Copyright 2017, 2018 Free Software Foundation, Inc. dnl This file is part of the GNU MP Library. dnl @@ -37,7 +37,7 @@ C POWER5 - C POWER6 - C POWER7 - C POWER8 - -C POWER9 ? +C POWER9 2.4-2.6 C TODO C * Schedule for POWER9 pipeline. @@ -55,9 +55,9 @@ PROLOGUE(mpn_addmul_1) cmpdi cr6, n, 2 - addi r0, n, -1 - srdi r0, r0, 1 - mtctr r0 + addi r0, n, -1 C FIXME: postpone + srdi r0, r0, 1 C FIXME: postpone + mtctr r0 C FIXME: postpone rldicl. r0, n, 0,63 C r0 = n & 3, set cr0 bne cr0, L(b1) @@ -95,14 +95,14 @@ L(b1): ld r11, 0(rp) L(top): ld r10, 24(rp) ld r12, 0(up) std r0, 0(rp) - maddld( r8, r31, v0, r11) C W:0,2,4 adde r0, r5, r9 + maddld( r8, r31, v0, r11) C W:0,2,4 maddhdu(r5, r31, v0, r11) C W:1,3,5 L(mid): ld r11, 32(rp) ld r31, 8(up) std r0, 8(rp) - maddld( r9, r12, v0, r10) C W:1,3,5 adde r0, r7, r8 + maddld( r9, r12, v0, r10) C W:1,3,5 maddhdu(r7, r12, v0, r10) C W:2,4,6 addi rp, rp, 16 addi up, up, 16 |