src/cmd/compile/internal/ssa/layout.go · a6fb2aede7c8d47b4d913eb83fa45bbeca76c433 · Kirill Smelkov / go

[dev.ssa] cmd/compile: reuse sparse sets across compiler passes · f962f330

Todd Neal authored Jan 28, 2016

Cache sparse sets in the function so they can be reused by subsequent
compiler passes.

benchmark old ns/op new ns/op delta
BenchmarkDSEPass-8 206945 180022 -13.01%
BenchmarkDSEPassBlock-8 5286103 2614054 -50.55%
BenchmarkCSEPass-8 1790277 1790655 +0.02%
BenchmarkCSEPassBlock-8 18083588 18112771 +0.16%
BenchmarkDeadcodePass-8 59837 41375 -30.85%
BenchmarkDeadcodePassBlock-8 1651575 511169 -69.05%
BenchmarkMultiPass-8 531529 427506 -19.57%
BenchmarkMultiPassBlock-8 7033496 4487814 -36.19%

benchmark old allocs new allocs delta
BenchmarkDSEPass-8 11 4 -63.64%
BenchmarkDSEPassBlock-8 599 120 -79.97%
BenchmarkCSEPass-8 18 18 +0.00%
BenchmarkCSEPassBlock-8 2700 2700 +0.00%
BenchmarkDeadcodePass-8 4 3 -25.00%
BenchmarkDeadcodePassBlock-8 30 9 -70.00%
BenchmarkMultiPass-8 24 20 -16.67%
BenchmarkMultiPassBlock-8 1800 1000 -44.44%

benchmark old bytes new bytes delta
BenchmarkDSEPass-8 221367 142 -99.94%
BenchmarkDSEPassBlock-8 3695207 3846 -99.90%
BenchmarkCSEPass-8 303328 303328 +0.00%
BenchmarkCSEPassBlock-8 5006400 5006400 +0.00%
BenchmarkDeadcodePass-8 84232 10506 -87.53%
BenchmarkDeadcodePassBlock-8 1274940 163680 -87.16%
BenchmarkMultiPass-8 608674 313834 -48.44%
BenchmarkMultiPassBlock-8 9906001 5003450 -49.49%

Change-Id: Ib1fa58c7f494b374d1a4bb9cffbc2c48377b59d3
Reviewed-on: https://go-review.googlesource.com/19100Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@golang.org>

f962f330

layout.go 2.41 KB

Replace layout.go