diff options
| author | Niels Möller <nisse@lysator.liu.se> | 2020-12-12 16:46:51 +0100 |
|---|---|---|
| committer | Niels Möller <nisse@lysator.liu.se> | 2020-12-12 16:46:51 +0100 |
| commit | 539efc9b997dfba757cacbbc512bc0a216ffe743 (patch) | |
| tree | a2e5e824e21da8558200a1694b7d949f6dc3cb8c | |
| parent | 9bdadc1317ffe0bf0ac5bfa7842275c6386ae7f6 (diff) | |
| download | nettle-539efc9b997dfba757cacbbc512bc0a216ffe743.tar.gz | |
ppc: More interleaving of chacha_4core.
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | powerpc64/p7/chacha-4core.asm | 32 |
2 files changed, 21 insertions, 16 deletions
@@ -1,3 +1,8 @@ +2020-12-12 Niels Möller <nisse@lysator.liu.se> + + * powerpc64/p7/chacha-4core.asm: More interleaving of independent + instructions, gives slight speedup on Power9. + 2020-12-01 Niels Möller <nisse@lysator.liu.se> * powerpc64/p7/chacha-4core.asm: Use protected zone below stack diff --git a/powerpc64/p7/chacha-4core.asm b/powerpc64/p7/chacha-4core.asm index b2330247..ed1445dd 100644 --- a/powerpc64/p7/chacha-4core.asm +++ b/powerpc64/p7/chacha-4core.asm @@ -57,53 +57,53 @@ C Main loop for round define(`QR',` vadduwm $1, $1, $2 vadduwm $5, $5, $6 - vxor $4, $4, $1 - vxor $8, $8, $5 - vrlw $4, $4, ROT16 - vrlw $8, $8, ROT16 vadduwm $9, $9, $10 vadduwm $13, $13, $14 + vxor $4, $4, $1 + vxor $8, $8, $5 vxor $12, $12, $9 vxor $16, $16, $13 + vrlw $4, $4, ROT16 + vrlw $8, $8, ROT16 vrlw $12, $12, ROT16 vrlw $16, $16, ROT16 vadduwm $3, $3, $4 vadduwm $7, $7, $8 - vxor $2, $2, $3 - vxor $6, $6, $7 - vrlw $2, $2, ROT12 - vrlw $6, $6, ROT12 vadduwm $11, $11, $12 vadduwm $15, $15, $16 + vxor $2, $2, $3 + vxor $6, $6, $7 vxor $10, $10, $11 vxor $14, $14, $15 + vrlw $2, $2, ROT12 + vrlw $6, $6, ROT12 vrlw $10, $10, ROT12 vrlw $14, $14, ROT12 vadduwm $1, $1, $2 vadduwm $5, $5, $6 - vxor $4, $4, $1 - vxor $8, $8, $5 - vrlw $4, $4, ROT8 - vrlw $8, $8, ROT8 vadduwm $9, $9, $10 vadduwm $13, $13, $14 + vxor $4, $4, $1 + vxor $8, $8, $5 vxor $12, $12, $9 vxor $16, $16, $13 + vrlw $4, $4, ROT8 + vrlw $8, $8, ROT8 vrlw $12, $12, ROT8 vrlw $16, $16, ROT8 vadduwm $3, $3, $4 vadduwm $7, $7, $8 - vxor $2, $2, $3 - vxor $6, $6, $7 - vrlw $2, $2, ROT7 - vrlw $6, $6, ROT7 vadduwm $11, $11, $12 vadduwm $15, $15, $16 + vxor $2, $2, $3 + vxor $6, $6, $7 vxor $10, $10, $11 vxor $14, $14, $15 + vrlw $2, $2, ROT7 + vrlw $6, $6, ROT7 vrlw $10, $10, ROT7 vrlw $14, $14, ROT7 ') |