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Iskander Sharipov 859cf7fc0f cmd/compile/internal/gc: handle array slice self-assign in esc.go
Instead of skipping all OSLICEARR, skip only ones with non-pointer
array type. For pointers to arrays, it's safe to apply the
self-assignment slicing optimizations.

Refactored the matching code into separate function for readability.

This is an extension to already existing optimization.

On its own, it does not improve any code under std, but
it opens some new optimization opportunities. One
of them is described in the referenced issue.

Updates #7921

Change-Id: I08ac660d3ef80eb15fd7933fb73cf53ded9333ad
Reviewed-on: https://go-review.googlesource.com/133375
Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2018-09-17 11:14:58 +00:00
.github .github: use HTTPS for Stack Overflow link in SUPPORT.md 2018-06-12 11:08:14 +00:00
api os: add ModeCharDevice to ModeType 2018-09-13 09:52:57 +00:00
doc doc: add a go/golang entry to the FAQ 2018-09-16 09:18:36 +00:00
lib/time lib/time: update vendored tzdata to release 2018e 2018-06-11 14:47:06 +00:00
misc misc/cgo/testplugin: disable DWARF tests on darwin 2018-09-05 11:27:37 +00:00
src cmd/compile/internal/gc: handle array slice self-assign in esc.go 2018-09-17 11:14:58 +00:00
test cmd/compile/internal/gc: handle array slice self-assign in esc.go 2018-09-17 11:14:58 +00:00
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AUTHORS A+C: add VMware as author, Venil Noronha as contributor 2018-08-31 02:14:24 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS A+C: add VMware as author, Venil Noronha as contributor 2018-08-31 02:14:24 +00:00
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