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d0b0b10b5c
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Lynn Boger d0b0b10b5c cmd/compile: leverage cc ops in more cases on ppc64x 
This updates some rules to use ops with CC variations to
set the condition code when the result of the operation is
zero. This allows the following compare with zero to be
removed since the equivalent condition code has already been
set.

In addition, a previous rule change to use ANDCCconst was modified
to allow any constant value, not just 1 in some cases.

Improvements in the reflect package benchmarks:

DeepEqual/int8-4                    23.9ns ± 1%    23.1ns ± 1%   -3.57%  (p=0.029 n=4+4)
DeepEqual/[]int8-4                   109ns ± 2%     102ns ± 1%   -6.67%  (p=0.029 n=4+4)
DeepEqual/int16-4                   23.8ns ± 1%    22.8ns ± 0%   -3.97%  (p=0.029 n=4+4)
DeepEqual/[]int16-4                  108ns ± 1%     102ns ± 0%   -6.25%  (p=0.029 n=4+4)
DeepEqual/int32-4                   24.9ns ± 3%    23.6ns ± 0%   -5.09%  (p=0.029 n=4+4)
DeepEqual/[]int32-4                  109ns ± 1%     103ns ± 0%   -5.64%  (p=0.029 n=4+4)
DeepEqual/int64-4                   25.5ns ± 1%    23.7ns ± 0%   -7.03%  (p=0.029 n=4+4)
DeepEqual/[]int64-4                  109ns ± 1%     102ns ± 0%   -6.73%  (p=0.029 n=4+4)
DeepEqual/int-4                     23.2ns ± 1%    22.7ns ± 0%   -2.05%  (p=0.029 n=4+4)
DeepEqual/[]int-4                    109ns ± 3%     101ns ± 0%   -7.18%  (p=0.029 n=4+4)
DeepEqual/uint8-4                   23.9ns ± 1%    23.5ns ± 0%   -1.69%  (p=0.029 n=4+4)
DeepEqual/[]uint8-4                 89.1ns ± 0%    85.6ns ± 1%   -3.95%  (p=0.029 n=4+4)
DeepEqual/uint16-4                  24.0ns ± 1%    23.8ns ± 0%   -0.76%  (p=0.343 n=4+4)
DeepEqual/[]uint16-4                 111ns ± 0%     106ns ± 4%   -4.74%  (p=0.029 n=4+4)
DeepEqual/uint32-4                  23.5ns ± 1%    23.0ns ± 0%   -2.15%  (p=0.029 n=4+4)
DeepEqual/[]uint32-4                 110ns ± 1%     104ns ± 0%   -5.66%  (p=0.029 n=4+4)
DeepEqual/uint64-4                  24.6ns ± 1%    24.3ns ± 0%   -1.10%  (p=0.143 n=4+4)
DeepEqual/[]uint64-4                 111ns ± 0%     105ns ± 1%   -5.16%  (p=0.029 n=4+4)
DeepEqual/uint-4                    23.6ns ± 0%    23.0ns ± 0%   -2.70%  (p=0.029 n=4+4)
DeepEqual/[]uint-4                   109ns ± 0%     103ns ± 1%   -5.74%  (p=0.029 n=4+4)
DeepEqual/uintptr-4                 25.1ns ± 1%    24.8ns ± 2%   -1.11%  (p=0.171 n=4+4)
DeepEqual/[]uintptr-4                111ns ± 0%     106ns ± 1%   -4.45%  (p=0.029 n=4+4)
DeepEqual/float32-4                 22.5ns ± 0%    22.2ns ± 0%   -1.29%  (p=0.029 n=4+4)
DeepEqual/[]float32-4                105ns ± 0%     101ns ± 1%   -3.75%  (p=0.029 n=4+4)
DeepEqual/float64-4                 22.7ns ± 2%    22.1ns ± 0%   -2.52%  (p=0.029 n=4+4)
DeepEqual/[]float64-4                105ns ± 1%     103ns ± 1%   -2.77%  (p=0.029 n=4+4)
DeepEqual/complex64-4               22.9ns ± 0%    22.8ns ± 0%   -0.48%  (p=0.029 n=4+4)
DeepEqual/[]complex64-4              107ns ± 0%     101ns ± 0%   -5.48%  (p=0.029 n=4+4)
DeepEqual/complex128-4              23.2ns ± 1%    22.6ns ± 0%   -2.34%  (p=0.029 n=4+4)
DeepEqual/[]complex128-4             107ns ± 0%     101ns ± 0%   -5.60%  (p=0.029 n=4+4)
DeepEqual/bool-4                    22.0ns ± 1%    21.7ns ± 0%   -1.44%  (p=0.029 n=4+4)
DeepEqual/[]bool-4                   106ns ± 1%     100ns ± 0%   -5.42%  (p=0.029 n=4+4)
DeepEqual/string-4                  26.7ns ± 1%    24.7ns ± 0%   -7.47%  (p=0.029 n=4+4)
DeepEqual/[]string-4                 112ns ± 0%     107ns ± 0%   -4.21%  (p=0.029 n=4+4)
DeepEqual/[]uint8#01-4              89.4ns ± 1%    85.5ns ± 1%   -4.44%  (p=0.029 n=4+4)
DeepEqual/[][]uint8-4                177ns ± 0%     173ns ± 1%   -2.22%  (p=0.029 n=4+4)
DeepEqual/[6]uint8-4                 137ns ± 1%     137ns ± 0%   -0.56%  (p=0.057 n=4+4)
DeepEqual/[][6]uint8-4               232ns ± 0%     230ns ± 1%   -1.09%  (p=0.029 n=4+4)

Change-Id: I275624e21dc4d70001032be48897f1504cbfdd1c
Reviewed-on: https://go-review.googlesource.com/c/go/+/427634
Reviewed-by: Paul Murphy <murp@ibm.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Archana Ravindar <aravind5@in.ibm.com>
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-10-07 13:39:30 +00:00
.github .github: update issue label for pkgsite-removal 2022-09-07 16:00:20 +00:00
api runtime/coverage: revise/shorten function names 2022-10-05 14:59:05 +00:00
doc spec: describe an edge case for slice expression of nil slice 2022-09-21 14:06:17 +00:00
lib/time lib/time, time/tzdata: update to 2022b 2022-08-11 20:03:19 +00:00
misc misc/wasm: update deprecated substr usage 2022-09-27 17:15:12 +00:00
src cmd/compile: leverage cc ops in more cases on ppc64x 2022-10-07 13:39:30 +00:00
test cmd/compile: fold constant shift with extension on riscv64 2022-10-06 05:21:04 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md
LICENSE
PATENTS
README.md README.md: update wiki link 2022-04-26 16:21:18 +00:00
SECURITY.md SECURITY.md: replace golang.org with go.dev 2022-04-26 19:59:47 +00:00

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

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Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

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