Michael Munday 47c58b4667 bytes, strings: optimize multi-byte index operations on s390x ... Use vector instructions to speed up indexing operations for short strings (64 bytes or less). bytes_s390x.go and strings_s390x.go are based on their amd64 equivalents in CL 31690. bytes package: name old time/op new time/op delta Index/10 40.3ns ± 7% 11.3ns ± 4% -72.06% (p=0.000 n=10+10) Index/32 196ns ± 1% 27ns ± 2% -86.25% (p=0.000 n=10+10) Index/4K 28.9µs ± 1% 1.5µs ± 2% -94.94% (p=0.000 n=9+9) Index/4M 30.1ms ± 2% 1.5ms ± 3% -94.94% (p=0.000 n=10+10) Index/64M 549ms ±13% 28ms ± 3% -94.87% (p=0.000 n=10+9) IndexEasy/10 18.8ns ±11% 11.5ns ± 2% -38.81% (p=0.000 n=10+10) IndexEasy/32 23.6ns ± 6% 28.1ns ± 3% +19.29% (p=0.000 n=10+10) IndexEasy/4K 251ns ± 5% 223ns ± 8% -11.04% (p=0.000 n=10+10) IndexEasy/4M 318µs ± 9% 266µs ± 8% -16.42% (p=0.000 n=10+10) IndexEasy/64M 14.7ms ±16% 13.2ms ±11% -10.22% (p=0.001 n=10+10) strings package: name old time/op new time/op delta IndexRune 88.1ns ±16% 28.9ns ± 4% -67.20% (p=0.000 n=10+10) IndexRuneLongString 456ns ± 7% 34ns ± 3% -92.50% (p=0.000 n=10+10) IndexRuneFastPath 12.9ns ±14% 11.1ns ± 6% -13.84% (p=0.000 n=10+10) Index 13.0ns ± 7% 11.3ns ± 4% -13.31% (p=0.000 n=10+10) IndexHard1 3.38ms ± 9% 0.07ms ± 1% -97.79% (p=0.000 n=10+10) IndexHard2 3.58ms ± 7% 0.37ms ± 2% -89.78% (p=0.000 n=10+10) IndexHard3 3.47ms ± 7% 0.75ms ± 1% -78.52% (p=0.000 n=10+10) IndexHard4 3.56ms ± 6% 1.34ms ± 0% -62.39% (p=0.000 n=9+9) Change-Id: If36c2afb8c02e80fcaa1cf5ec2abb0a2be08c7d1 Reviewed-on: https://go-review.googlesource.com/32447 Run-TryBot: Michael Munday <munday@ca.ibm.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>		2016-11-01 13:17:57 +00:00
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buffer_test.go	bytes: improve WriteRune performance	2016-09-08 17:15:28 +00:00
buffer.go	bytes: encode size of rune read by ReadRune into lastRead to speed up UnreadRune	2016-10-17 06:00:35 +00:00
bytes_amd64.go	strings: use AVX2 for Index if available	2016-09-07 10:43:13 +00:00
bytes_decl.go
bytes_generic.go	bytes, strings: optimize multi-byte index operations on s390x	2016-11-01 13:17:57 +00:00
bytes_s390x.go	bytes, strings: optimize multi-byte index operations on s390x	2016-11-01 13:17:57 +00:00
bytes_test.go	bytes, strings: optimize for ASCII sets	2016-10-28 17:37:04 +00:00
bytes.go	bytes, strings: optimize for ASCII sets	2016-10-28 17:37:04 +00:00
compare_test.go
equal_test.go
example_test.go	bytes: add examples	2016-08-16 01:33:32 +00:00
export_test.go
reader_test.go	all: use SeekStart, SeekCurrent, SeekEnd	2016-05-06 00:10:41 +00:00
reader.go	all: use SeekStart, SeekCurrent, SeekEnd	2016-05-06 00:10:41 +00:00