c809e5ba9f
We now canonicalize commutative operations by ordering their value IDs. The lower-numbered value ID is always placed first into a commutative instruction. In other words, this instruction: bit_and result, v7, v5 Would be silently converted to this: bit_and result, v5, v7 This will allow these two logically-equivalent instructions to be deduplicated: bit_and result, v7, v5 bit_and result, v5, v7 Of course, deduplicating these ops can unlock additional free CSE/DCE. The affected instructions are listed in http://review.skia.org/473238 Change-Id: Ib9beb79d6b72d7903184aaa9a53e8e5a02ae126d Reviewed-on: https://skia-review.googlesource.com/c/skia/+/473239 Commit-Queue: John Stiles <johnstiles@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Brian Osman <brianosman@google.com> Reviewed-by: Herb Derby <herb@google.com>
52 lines
1.2 KiB
Plaintext
52 lines
1.2 KiB
Plaintext
16 registers, 49 instructions:
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0 r0 = uniform32 ptr0 4
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1 r1 = uniform32 ptr0 8
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2 r2 = uniform32 ptr0 C
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3 r3 = uniform32 ptr0 10
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4 r4 = uniform32 ptr0 14
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5 r5 = uniform32 ptr0 18
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6 r6 = uniform32 ptr0 1C
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7 r7 = uniform32 ptr0 20
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8 r8 = splat 0 (0)
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9 r9 = splat FFFFFFFF (nan)
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10 r10 = trunc r1
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11 r11 = splat 2 (2.8025969e-45)
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12 r11 = eq_i32 r10 r11
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13 r12 = bit_xor r9 r11
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14 r13 = bit_and r11 r12
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15 r14 = splat 1 (1.4012985e-45)
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16 r14 = eq_i32 r10 r14
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17 r15 = bit_or r13 r14
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18 r15 = bit_and r12 r15
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19 r13 = select r15 r9 r13
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20 r8 = eq_i32 r8 r10
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21 r13 = bit_or r13 r8
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22 r13 = bit_and r12 r13
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23 r8 = bit_and r8 r13
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24 r12 = bit_xor r9 r8
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25 r8 = bit_and r8 r12
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26 r14 = bit_or r14 r8
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27 r14 = bit_and r13 r14
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28 r14 = bit_and r12 r14
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29 r8 = select r14 r9 r8
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30 r11 = bit_or r11 r8
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31 r11 = bit_and r13 r11
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32 r11 = bit_and r12 r11
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33 r8 = select r11 r9 r8
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34 r9 = splat 3 (4.2038954e-45)
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35 r9 = eq_i32 r10 r9
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36 r9 = bit_or r8 r9
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37 r9 = bit_and r13 r9
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38 r9 = bit_and r12 r9
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39 r9 = bit_and r13 r9
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40 r9 = bit_and r13 r9
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41 r4 = select r9 r0 r4
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42 r5 = select r9 r1 r5
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43 r6 = select r9 r2 r6
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44 r7 = select r9 r3 r7
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loop:
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45 store32 ptr1 r4
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46 store32 ptr2 r5
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47 store32 ptr3 r6
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48 store32 ptr4 r7
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