Ben Shi 69261ecad6 runtime: use hardware divider to improve performance ... The hardware divider is an optional component of ARMv7. This patch detects whether it is available in runtime and use it or not. 1. The hardware divider is detected at startup and a flag is set/clear according to a perticular bit of runtime.hwcap. 2. Each call of runtime.udiv will check this flag and decide if use the hardware division instruction. A rough test shows the performance improves 40-50% for ARMv7. And the compatibility of ARMv5/v6 is not broken. fixes #19118 Change-Id: Ic586bc9659ebc169553ca2004d2bdb721df823ac Reviewed-on: https://go-review.googlesource.com/37496 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>		2017-04-11 12:25:55 +00:00
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android	misc/android: make the exec wrapper exit code parsing more robust	2016-06-08 05:24:53 +00:00
arm	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
cgo	runtime: use hardware divider to improve performance	2017-04-11 12:25:55 +00:00
chrome/gophertool	all: link to https instead of http	2015-07-11 14:36:33 +00:00
git	misc/git: Fix non-literal period in pre-commit grep	2016-02-26 19:06:38 +00:00
ios	misc/ios,cmd/go, runtime/cgo: fix iOS test harness (again)	2017-03-04 01:43:13 +00:00
linkcheck	misc/linkcheck: better redirect handling, use meaningful exit code	2013-10-25 17:31:02 +03:00
nacl	cmd/pprof: vendor pprof from github.com/google/pprof	2017-02-24 19:18:53 +00:00
sortac	misc/sortac: add tool to sort the AUTHORS and CONTRIBUTORS files	2015-11-12 17:07:09 +00:00
swig	all: make copyright headers consistent with one space after period	2016-05-02 13:43:18 +00:00
trace	misc/trace: disable trace resolution warning	2016-07-21 18:17:31 +00:00
benchcmp	all: use golang.org/x/... import paths	2014-11-10 09:15:57 +11:00
editors	all: don't refer to code.google.com/p/go{,-wiki}/	2015-02-06 14:41:47 +00:00