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| author | Martin Möhrmann <martisch@uos.de> | 2016-10-22 15:43:23 +0200 |
|---|---|---|
| committer | Martin Möhrmann <martisch@uos.de> | 2016-10-24 14:12:19 +0000 |
| commit | 7ff0c8267f25a628dc4c8b5fa356b26cbb72530d (patch) | |
| tree | 78edce5943e4a188199c7301df68ef17ba2ca4b2 /src/bufio/scan.go | |
| parent | 9ac60181e2e54b6404e67852d6e1e65a8cbd3616 (diff) | |
| download | go-7ff0c8267f25a628dc4c8b5fa356b26cbb72530d.tar.xz | |
cmd/compile: replace ANDL with MOV?ZX
According to "Intel 64 and IA-32 Architectures Optimization Reference
Manual" Section: "3.5.1.13 Zero-Latency MOV Instructions"
MOV?ZX instructions have zero latency on newer processors.
during make.bash:
(ANDLconst [0xFF] x) -> (MOVBQZX x)
applies 422 times
(ANDLconst [0xFFFF] x) -> (MOVWQZX x)
applies 114 times
Updates #15105
Change-Id: I10933af599de3c26449c52f4b5cd859331028f39
Reviewed-on: https://go-review.googlesource.com/31639
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
Diffstat (limited to 'src/bufio/scan.go')
0 files changed, 0 insertions, 0 deletions