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
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