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Matthew Dempsky e6c973198d [dev.regabi] cmd/compile: stop mangling SelectorExpr.Sel for ODOTMETH
ODOTMETH is unique among SelectorExpr expressions, in that Sel gets
mangled so that it no longer has the original identifier that was
selected (e.g., just "Foo"), but instead the qualified symbol name for
the selected method (e.g., "pkg.Type.Foo"). This is rarely useful, and
instead results in a lot of compiler code needing to worry about
undoing this change.

This CL changes ODOTMETH to leave the original symbol in place. The
handful of code locations where the mangled symbol name is actually
wanted are updated to use ir.MethodExprName(n).Sym() or (equivalently)
ir.MethodExprName(n).Func.Sym() instead.

Historically, the compiler backend has mistakenly used types.Syms
where it should have used ir.Name/ir.Funcs. And this change in
particular may risk breaking something, as the SelectorExpr.Sel will
no longer point at a symbol that uniquely identifies the called
method. However, I expect CL 280294 (desugar OCALLMETH into OCALLFUNC)
to have substantially reduced this risk, as ODOTMETH expressions are
now replaced entirely earlier in the compiler.

Passes toolstash -cmp.

Change-Id: If3c9c3b7df78ea969f135840574cf89e1d263876
Reviewed-on: https://go-review.googlesource.com/c/go/+/280436
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2020-12-28 07:44:07 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api api/go1.16: remove crypto/tls APIs that are moved to Go 1.17 2020-12-17 20:25:45 +00:00
doc crypto/tls: revert "add HandshakeContext method to Conn" 2020-12-17 20:04:25 +00:00
lib/time lib/time, time/tzdata: update tz data to 2020d 2020-10-24 21:42:44 +00:00
misc cmd/compile, runtime: use __msan_memmove for moving data, split msanread to fields 2020-12-03 15:40:11 +00:00
src [dev.regabi] cmd/compile: stop mangling SelectorExpr.Sel for ODOTMETH 2020-12-28 07:44:07 +00:00
test [dev.regabi] cmd/compile: stop mangling SelectorExpr.Sel for ODOTMETH 2020-12-28 07:44:07 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore
AUTHORS A+C: add Kush Patel (corporate CLA for Hootsuite Inc) 2020-07-08 00:10:44 +00:00
codereview.cfg [dev.regabi] codereview.cfg: add config for dev.regabi 2020-12-22 21:02:04 +00:00
CONTRIBUTING.md
CONTRIBUTORS CONTRIBUTORS: update for the Go 1.15 release 2020-08-10 21:51:48 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE
PATENTS
README.md
robots.txt
SECURITY.md SECURITY.md: update go versions 2019-09-26 15:34:57 +00:00

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