Brad Fitzpatrick 3ddc9ad916 strings: add special cases for Join of 2 and 3 strings ... We already had special cases for 0 and 1. Add 2 and 3 for now too. To be removed if the compiler is improved later (#6714). This halves the number of allocations and total bytes allocated via common filepath.Join calls, improving filepath.Walk performance. Noticed as part of investigating filepath.Walk in #16399. Change-Id: If7b1bb85606d4720f3ebdf8de7b1e12ad165079d Reviewed-on: https://go-review.googlesource.com/25005 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>		2016-08-16 00:33:15 +00:00
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compare_test.go	all: single space after period.	2016-03-02 00:13:47 +00:00
compare.go	all: make copyright headers consistent with one space after period	2016-03-01 23:34:33 +00:00
example_test.go	strings: Add examples for HasPrefix and HasSuffix	2015-10-23 01:57:15 +00:00
export_test.go
reader_test.go	strings, bytes: fix Reader 0 byte read at EOF	2016-05-03 21:01:13 +00:00
reader.go	all: use SeekStart, SeekCurrent, SeekEnd	2016-05-06 00:10:41 +00:00
replace_test.go
replace.go
search_test.go
search.go
strings_amd64.go	strings: fix and reenable amd64 Index for 17-31 byte strings	2016-05-27 22:57:32 +00:00
strings_decl.go	all: make copyright headers consistent with one space after period	2016-03-01 23:34:33 +00:00
strings_generic.go	all: make copyright headers consistent with one space after period	2016-03-01 23:34:33 +00:00
strings_test.go	strings: fix and reenable amd64 Index for 17-31 byte strings	2016-05-27 22:57:32 +00:00
strings.go	strings: add special cases for Join of 2 and 3 strings	2016-08-16 00:33:15 +00:00
strings.s