)]}' { "commit": "b1df8d6ffa2c4c5be567934bd44432fff8f3c4a7", "tree": "3da1f21f9fd3cc1f3f2102b6bf889e5d6bbe1743", "parents": [ "44286b17c5ca6673648ba57b4a9d49ab8dffedf6" ], "author": { "name": "Josh Bleecher Snyder", "email": "josharian@gmail.com", "time": "Mon Feb 26 07:05:19 2018 -0800" }, "committer": { "name": "Josh Bleecher Snyder", "email": "josharian@gmail.com", "time": "Mon May 07 22:09:18 2018 +0000" }, "message": "cmd/compile: add some LEAL{1,2,4,8} rewrite rules for AMD64\n\nThis should improve some 32 bit arithmetic operations.\n\nDuring make.bash, this increases the number of\nrules firing by 15518:\n\n$ wc -l rulelog-*\n 13490514 rulelog-head\n 13474996 rulelog-master\n\ncompress/flate benchmarks:\n\nname old time/op new time/op delta\nDecode/Digits/Huffman/1e4-8 103µs ± 4% 102µs ± 0% -0.95% (p\u003d0.000 n\u003d30+27)\nDecode/Digits/Huffman/1e5-8 962µs ± 2% 954µs ± 1% -0.80% (p\u003d0.000 n\u003d25+25)\nDecode/Digits/Huffman/1e6-8 9.55ms ± 1% 9.50ms ± 1% -0.57% (p\u003d0.000 n\u003d29+29)\nDecode/Digits/Speed/1e4-8 110µs ± 2% 110µs ± 2% -0.41% (p\u003d0.003 n\u003d28+30)\nDecode/Digits/Speed/1e5-8 1.15ms ± 1% 1.14ms ± 1% -0.85% (p\u003d0.000 n\u003d29+28)\nDecode/Digits/Speed/1e6-8 11.5ms ± 2% 11.4ms ± 1% -1.26% (p\u003d0.000 n\u003d28+27)\nDecode/Digits/Default/1e4-8 113µs ± 1% 112µs ± 1% -0.49% (p\u003d0.001 n\u003d27+30)\nDecode/Digits/Default/1e5-8 1.13ms ± 0% 1.12ms ± 1% -0.75% (p\u003d0.000 n\u003d26+24)\nDecode/Digits/Default/1e6-8 11.1ms ± 1% 11.1ms ± 1% -0.47% (p\u003d0.000 n\u003d28+27)\nDecode/Digits/Compression/1e4-8 113µs ± 1% 112µs ± 1% -0.70% (p\u003d0.000 n\u003d28+29)\nDecode/Digits/Compression/1e5-8 1.13ms ± 2% 1.12ms ± 1% -1.41% (p\u003d0.000 n\u003d28+26)\nDecode/Digits/Compression/1e6-8 11.1ms ± 1% 11.1ms ± 1% -0.33% (p\u003d0.002 n\u003d29+27)\nDecode/Twain/Huffman/1e4-8 115µs ± 1% 115µs ± 1% -0.40% (p\u003d0.000 n\u003d28+26)\nDecode/Twain/Huffman/1e5-8 1.05ms ± 1% 1.04ms ± 0% -0.41% (p\u003d0.000 n\u003d27+25)\nDecode/Twain/Huffman/1e6-8 10.4ms ± 1% 10.4ms ± 1% ~ (p\u003d0.993 n\u003d28+24)\nDecode/Twain/Speed/1e4-8 118µs ± 2% 116µs ± 1% -1.08% (p\u003d0.000 n\u003d27+29)\nDecode/Twain/Speed/1e5-8 1.07ms ± 1% 1.07ms ± 1% -0.23% (p\u003d0.041 n\u003d26+27)\nDecode/Twain/Speed/1e6-8 10.6ms ± 1% 10.5ms ± 0% -0.68% (p\u003d0.000 n\u003d29+27)\nDecode/Twain/Default/1e4-8 110µs ± 1% 109µs ± 0% -0.49% (p\u003d0.000 n\u003d29+26)\nDecode/Twain/Default/1e5-8 906µs ± 1% 902µs ± 1% -0.48% (p\u003d0.000 n\u003d27+28)\nDecode/Twain/Default/1e6-8 8.75ms ± 1% 8.68ms ± 2% -0.73% (p\u003d0.000 n\u003d28+28)\nDecode/Twain/Compression/1e4-8 110µs ± 1% 109µs ± 1% -0.80% (p\u003d0.000 n\u003d27+28)\nDecode/Twain/Compression/1e5-8 905µs ± 1% 906µs ± 5% ~ (p\u003d0.065 n\u003d27+29)\nDecode/Twain/Compression/1e6-8 8.75ms ± 2% 8.68ms ± 1% -0.76% (p\u003d0.000 n\u003d26+26)\nEncode/Digits/Huffman/1e4-8 31.8µs ± 1% 32.3µs ± 2% +1.43% (p\u003d0.000 n\u003d28+27)\nEncode/Digits/Huffman/1e5-8 299µs ± 2% 296µs ± 1% -1.05% (p\u003d0.000 n\u003d29+29)\nEncode/Digits/Huffman/1e6-8 2.99ms ± 3% 2.96ms ± 1% -1.00% (p\u003d0.000 n\u003d29+28)\nEncode/Digits/Speed/1e4-8 149µs ± 1% 152µs ± 4% +2.18% (p\u003d0.000 n\u003d30+30)\nEncode/Digits/Speed/1e5-8 1.39ms ± 1% 1.40ms ± 2% +1.02% (p\u003d0.000 n\u003d27+27)\nEncode/Digits/Speed/1e6-8 13.7ms ± 0% 13.8ms ± 1% +0.81% (p\u003d0.000 n\u003d27+27)\nEncode/Digits/Default/1e4-8 297µs ± 7% 297µs ± 7% ~ (p\u003d1.000 n\u003d30+30)\nEncode/Digits/Default/1e5-8 4.51ms ± 1% 4.42ms ± 1% -2.06% (p\u003d0.000 n\u003d29+29)\nEncode/Digits/Default/1e6-8 47.5ms ± 1% 46.6ms ± 1% -1.90% (p\u003d0.000 n\u003d27+25)\nEncode/Digits/Compression/1e4-8 302µs ± 7% 303µs ± 9% ~ (p\u003d0.854 n\u003d30+30)\nEncode/Digits/Compression/1e5-8 4.52ms ± 1% 4.43ms ± 2% -1.91% (p\u003d0.000 n\u003d26+25)\nEncode/Digits/Compression/1e6-8 47.5ms ± 1% 46.7ms ± 1% -1.70% (p\u003d0.000 n\u003d26+27)\nEncode/Twain/Huffman/1e4-8 46.6µs ± 2% 46.8µs ± 2% ~ (p\u003d0.114 n\u003d30+30)\nEncode/Twain/Huffman/1e5-8 357µs ± 3% 352µs ± 2% -1.13% (p\u003d0.000 n\u003d29+28)\nEncode/Twain/Huffman/1e6-8 3.58ms ± 4% 3.52ms ± 1% -1.43% (p\u003d0.003 n\u003d30+28)\nEncode/Twain/Speed/1e4-8 173µs ± 1% 174µs ± 1% +0.65% (p\u003d0.000 n\u003d27+28)\nEncode/Twain/Speed/1e5-8 1.39ms ± 1% 1.40ms ± 1% +0.92% (p\u003d0.000 n\u003d28+27)\nEncode/Twain/Speed/1e6-8 13.6ms ± 1% 13.7ms ± 1% +0.51% (p\u003d0.000 n\u003d25+26)\nEncode/Twain/Default/1e4-8 364µs ± 5% 361µs ± 5% ~ (p\u003d0.219 n\u003d30+30)\nEncode/Twain/Default/1e5-8 5.41ms ± 1% 5.43ms ± 5% ~ (p\u003d0.655 n\u003d27+27)\nEncode/Twain/Default/1e6-8 57.2ms ± 1% 58.4ms ± 4% +2.15% (p\u003d0.000 n\u003d22+28)\nEncode/Twain/Compression/1e4-8 371µs ± 9% 373µs ± 6% ~ (p\u003d0.503 n\u003d30+29)\nEncode/Twain/Compression/1e5-8 5.97ms ± 2% 5.92ms ± 1% -0.75% (p\u003d0.000 n\u003d28+26)\nEncode/Twain/Compression/1e6-8 64.0ms ± 1% 63.8ms ± 1% -0.36% (p\u003d0.036 n\u003d27+25)\n[Geo mean] 1.37ms 1.36ms -0.38%\n\n\nChange-Id: I3df4de63f06eaf121c38821bd889453a8de1b199\nReviewed-on: https://go-review.googlesource.com/101276\nReviewed-by: Keith Randall \u003ckhr@golang.org\u003e\n", "tree_diff": [ { "type": "modify", "old_id": "bd36e60f6eea3790414c944d242662f237aace87", "old_mode": 33188, "old_path": "src/cmd/compile/internal/ssa/gen/AMD64.rules", "new_id": "45c82a0cd7f160335d2ee51d6539a490148b120d", "new_mode": 33188, "new_path": "src/cmd/compile/internal/ssa/gen/AMD64.rules" }, { "type": "modify", "old_id": "2fce1e2221435f2a0df05bc3b22003ce149ed24e", "old_mode": 33188, "old_path": "src/cmd/compile/internal/ssa/rewriteAMD64.go", "new_id": "3ff7e48765afba886a1346d5375eb22a49ddca7e", "new_mode": 33188, "new_path": "src/cmd/compile/internal/ssa/rewriteAMD64.go" } ] }