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Austin Clements bdb65da049 cmd/compile: don't compact liveness maps in place
Currently Liveness.compact rewrites the Liveness.livevars slice in
place. However, we're about to add register maps, which we'll want to
track in livevars, but compact independently from the stack maps.
Hence, this CL modifies Liveness.compact to consume Liveness.livevars
and produce a new slice of deduplicated stack maps. This is somewhat
clearer anyway because it avoids potential confusion over how
Liveness.livevars is indexed.

Passes toolstash -cmp.

For #24543.

Change-Id: I7093fbc71143f8a29e677aa30c96e501f953ca2b
Reviewed-on: https://go-review.googlesource.com/108498
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2018-04-23 16:32:16 +00:00
.github github: update Pull Request template 2018-02-21 02:07:46 +00:00
api syscall: introduce Pointer type and use it instead of uintptr 2018-04-18 08:50:42 +00:00
doc cmd/internal/obj/arm64: summarize the Go assembly syntax and the GNU syntax mapping rules 2018-04-20 01:40:35 +00:00
lib/time all: use HTTPS for iana.org links 2018-02-13 18:36:48 +00:00
misc misc/cgo/testcshared: use file descriptor 30 for TestUnexportedSymbols 2018-04-21 04:18:51 +00:00
src cmd/compile: don't compact liveness maps in place 2018-04-23 16:32:16 +00:00
test cmd/compile: avoid runtime call during switch string(byteslice) 2018-04-21 00:50:50 +00:00
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.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: update email address 2018-04-14 19:28:37 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS C: add Iskander Sharipov's individual CLA mail 2018-04-16 04:49:46 +00:00
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README.md README: update number of contributors 2018-04-03 22:10:32 +00:00
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