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Dave Cheney authored
Add arm64 assembly implementation of runtime.cmpstring and bytes.Compare. benchmark old ns/op new ns/op delta BenchmarkCompareBytesEqual 98.0 27.5 -71.94% BenchmarkCompareBytesToNil 9.38 10.0 +6.61% BenchmarkCompareBytesEmpty 13.3 10.0 -24.81% BenchmarkCompareBytesIdentical 98.0 27.5 -71.94% BenchmarkCompareBytesSameLength 43.3 16.3 -62.36% BenchmarkCompareBytesDifferentLength 43.4 16.3 -62.44% BenchmarkCompareBytesBigUnaligned 6979680 1360979 -80.50% BenchmarkCompareBytesBig 6915995 1381979 -80.02% BenchmarkCompareBytesBigIdentical 6781440 1327304 -80.43% benchmark old MB/s new MB/s speedup BenchmarkCompareBytesBigUnaligned 150.23 770.46 5.13x BenchmarkCompareBytesBig 151.62 758.76 5.00x BenchmarkCompareBytesBigIdentical 154.63 790.01 5.11x * note, the machine we are benchmarking on has some issues. What is clear is compared to a few days ago the old MB/s value has increased from ~115 to 150. I'm less certain about the new MB/s number, which used to be close to 1Gb/s. Change-Id: I4f31b2c7a06296e13912aacc958525632cb0450d Reviewed-on: https://go-review.googlesource.com/8541Reviewed-by:
Aram Hăvărneanu <aram@mgk.ro> Reviewed-by:
David Crawshaw <crawshaw@golang.org>
ee349b5d