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| author | Niels Möller <nisse@lysator.liu.se> | 2013-04-12 13:19:41 +0200 |
|---|---|---|
| committer | Niels Möller <nisse@lysator.liu.se> | 2013-04-12 13:19:41 +0200 |
| commit | cdde35bb2530c4a29cb72dea9d5207a9c954c80f (patch) | |
| tree | 464ba9ff41efc509ce193d151b067a40a08d9a7c /armv7 | |
| parent | 3be646d1cdbffbceef956de554a005320a1aa63d (diff) | |
| download | nettle-cdde35bb2530c4a29cb72dea9d5207a9c954c80f.tar.gz | |
ARM umac_nh: Use vmlal, 16% speedup.
Diffstat (limited to 'armv7')
| -rw-r--r-- | armv7/umac-nh.asm | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/armv7/umac-nh.asm b/armv7/umac-nh.asm index 7c0a0290..87cb86d0 100644 --- a/armv7/umac-nh.asm +++ b/armv7/umac-nh.asm @@ -30,7 +30,7 @@ define(<QB>, <q1>) define(<DM>, <d16>) define(<QLEFT>, <q9>) define(<QRIGHT>, <q10>) -define(<QACC>, <q11>) +define(<QY>, <q11>) define(<QT0>, <q12>) define(<QT1>, <q13>) define(<QK0>, <q14>) @@ -59,7 +59,7 @@ PROLOGUE(_nettle_umac_nh) vmov.i32 D0REG(QLEFT)[0], SHIFT vmov.32 D1REG(QLEFT), D0REG(QLEFT) - vmov.i64 QACC, #0 + vmov.i64 QY, #0 vshl.u64 DM, DM, D0REG(QRIGHT) .Loop: @@ -78,14 +78,12 @@ PROLOGUE(_nettle_umac_nh) vld1.i32 {QK0, QK1}, [KEY]! vadd.i32 QA, QA, QK0 vadd.i32 QB, QB, QK1 - vmull.u32 QT0, D0REG(QA), D0REG(QB) - vmull.u32 QT1, D1REG(QA), D1REG(QB) subs LENGTH, LENGTH, #32 - vadd.i64 QACC, QACC, QT0 - vadd.i64 QACC, QACC, QT1 + vmlal.u32 QY, D0REG(QA), D0REG(QB) + vmlal.u32 QY, D1REG(QA), D1REG(QB) bhi .Loop - vadd.i64 D0REG(QACC), D0REG(QACC), D1REG(QACC) - vmov r0, r1, D0REG(QACC) + vadd.i64 D0REG(QY), D0REG(QY), D1REG(QY) + vmov r0, r1, D0REG(QY) bx lr EPILOGUE(_nettle_umac_nh) |