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Josh Bleecher Snyder b5931020b7 cmd/internal/obj/arm64: make assembler almost concurrency-safe
CL 39922 made the arm assembler concurrency-safe.
This CL does the same, but for arm64.
The approach is similar: introduce ctxt7 to hold
function-local state and thread it through
the assembler as necessary.

One race remains after this CL, deep in aclass,
in the check that a Prog does not take the address
of a TLS variable.

That race is conceptually unrelated to this refactoring,
and will be addressed in a separate CL.

Passes toolstash-check -all.

Updates #15756

Change-Id: Icab1ef70008468f9a5b8bf728a77c4520bbcb67d
Reviewed-on: https://go-review.googlesource.com/40252
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2017-04-11 14:34:00 +00:00
.github doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
api math/big: define Word as uint instead of uintptr 2017-02-21 19:31:40 +00:00
doc doc: document go1.8.1 2017-04-07 16:45:08 +00:00
lib/time *.bash: always use the same string equality operator 2017-03-14 21:46:31 +00:00
misc runtime: use hardware divider to improve performance 2017-04-11 12:25:55 +00:00
src cmd/internal/obj/arm64: make assembler almost concurrency-safe 2017-04-11 14:34:00 +00:00
test cmd/compile: skip array bounds errors when type is broken 2017-04-10 20:57:08 +00:00
.gitattributes
.gitignore cmd/dist: move cmd/go z files to cmd/go/internal/cfg 2017-02-03 20:30:52 +00:00
AUTHORS A+C: automated update 2016-12-21 03:22:22 +00:00
CONTRIBUTING.md doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
CONTRIBUTORS A+C: automated update 2016-12-21 03:22:22 +00:00
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LICENSE
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README.md readme: add attribution for the Gopher image 2017-02-03 19:39:41 +00:00
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