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Matthew Dempsky f5516559e6 cmd/compile/internal/x86: fix zero-range merging logic
All other architectures merge stack-zeroing ranges if there are at
most two pointers/registers of memory between them, but x86 is
erroneously coded to require *exactly* two.

Shaves a tiny amount of text size off cmd/go when building for
GOARCH=386 and eliminates an unnecessary inconsistency between x86's
defframe and the other GOARCHes'.

   text	   data	    bss	    dec	    hex	filename
5241015	 191051	  93336	5525402	 544f9a	go.before
5240224	 191051	  93336	5524611	 544c83	go.after

Change-Id: Ib15ec8c07bca11e824640f0ab32abfc4bb160496
Reviewed-on: https://go-review.googlesource.com/30050
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-29 18:54:16 +00:00
.github doc: improve issue template 2016-08-29 03:33:28 +00:00
api unicode: upgrade to version 9.0.0 2016-06-28 15:08:11 +00:00
doc doc: add testing Name method to go1.8.txt 2016-09-28 16:06:39 +00:00
lib/time lib/time: update to IANA release 2016f (July 2016) 2016-07-07 16:15:13 +00:00
misc misc/cgo/testplugin: add test of -buildmode=plugin 2016-09-16 17:55:24 +00:00
src cmd/compile/internal/x86: fix zero-range merging logic 2016-09-29 18:54:16 +00:00
test cmd/compile: don't crash on (unsafe.Sizeof)(0) 2016-09-28 23:13:53 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore cmd/go: fail with nice error message on bad GOOS/GOARCH pair 2016-05-06 01:18:07 +00:00
AUTHORS A+C: automated updates 2016-06-24 02:21:02 +00:00
CONTRIBUTING.md doc: use new Gerrit URL and mention our instance in CONTRIBUTING.md 2016-03-09 00:52:42 +00:00
CONTRIBUTORS A+C: automated updates 2016-06-24 02:21:02 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README.md readme: emphasize issue tracker is for bugs/proposals 2015-10-02 18:44:14 +00:00
robots.txt godoc: serve robots.txt raw 2011-02-19 05:46:20 +11:00

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