From 432dce490209725eec48d566b6c1f848e8ada02a Mon Sep 17 00:00:00 2001 From: Ryan Oldenburg Date: Mon, 20 Jun 2022 21:48:18 -0500 Subject: [PATCH] less instructions --- src/pixie/masks.nim | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/src/pixie/masks.nim b/src/pixie/masks.nim index bff1c81..0ac4321 100644 --- a/src/pixie/masks.nim +++ b/src/pixie/masks.nim @@ -93,7 +93,7 @@ proc minifyBy2*(mask: Mask, power = 1): Mask {.raises: [PixieError].} = firstByte = cast[M128i]( [uint8.high, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] ) - for _ in countup(0, result.width - 16, 8): + while x <= result.width - 16: let top = mm_loadu_si128(src.data[src.dataIndex(x * 2, y * 2 + 0)].addr) btm = mm_loadu_si128(src.data[src.dataIndex(x * 2, y * 2 + 1)].addr) @@ -101,22 +101,22 @@ proc minifyBy2*(mask: Mask, power = 1): Mask {.raises: [PixieError].} = btmShifted = mm_srli_si128(btm, 1) topEven = mm_andnot_si128(oddMask, top) - topOdd = mm_srli_epi16(mm_and_si128(top, oddMask), 8) + topOdd = mm_srli_epi16(top, 8) btmEven = mm_andnot_si128(oddMask, btm) - btmOdd = mm_srli_epi16(mm_and_si128(btm, oddMask), 8) + btmOdd = mm_srli_epi16(btm, 8) topShiftedEven = mm_andnot_si128(oddMask, topShifted) - topShiftedOdd = mm_srli_epi16(mm_and_si128(topShifted, oddMask), 8) + topShiftedOdd = mm_srli_epi16(topShifted, 8) btmShiftedEven = mm_andnot_si128(oddMask, btmShifted) - btmShiftedOdd = mm_srli_epi16(mm_and_si128(btmShifted, oddMask), 8) + btmShiftedOdd = mm_srli_epi16(btmShifted, 8) topAddedEven = mm_add_epi16(topEven, topShiftedEven) btmAddedEven = mm_add_epi16(btmEven, btmShiftedEven) topAddedOdd = mm_add_epi16(topOdd, topShiftedOdd) - bottomAddedOdd = mm_add_epi16(btmOdd, btmShiftedOdd) + btmAddedOdd = mm_add_epi16(btmOdd, btmShiftedOdd) addedEven = mm_add_epi16(topAddedEven, btmAddedEven) - addedOdd = mm_add_epi16(topAddedOdd, bottomAddedOdd) + addedOdd = mm_add_epi16(topAddedOdd, btmAddedOdd) addedEvenDiv4 = mm_srli_epi16(addedEven, 2) addedOddDiv4 = mm_srli_epi16(addedOdd, 2)