[go] cmd/compile: add loclist for pruned reg ret params

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Gopher Robot (Gerrit)

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Feb 24, 2026, 3:51:40 PM (13 hours ago) Feb 24

to Derek Parker, goph...@pubsubhelper.golang.org, golang-...@googlegroups.com, David Chase, Keith Randall, Keith Randall, Go LUCI, Than McIntosh, golang-co...@googlegroups.com

Gopher Robot submitted the change

Change information

Commit message:

cmd/compile: add loclist for removed DCL nodes

Certain return parameters which live in registers and end up pruned by
earlier SSA passes will end up with a DWARF entry but no location list.
This patch fixes this by ensuring those params have proper location
lists generated for them.

Change-Id: I4fff074e62c3010abdee85934fb286510b21c707

Reviewed-on: https://go-review.googlesource.com/c/go/+/696575

Auto-Submit: Keith Randall <k...@golang.org>

Reviewed-by: Keith Randall <k...@golang.org>

Reviewed-by: David Chase <drc...@google.com>

LUCI-TryBot-Result: Go LUCI <golang...@luci-project-accounts.iam.gserviceaccount.com>

Reviewed-by: Keith Randall <k...@google.com>

Reviewed-by: Derek Parker <parker...@gmail.com>

Files:

M src/cmd/compile/internal/dwarfgen/dwarf.go
M src/cmd/compile/internal/ssa/config.go
M src/cmd/compile/internal/ssa/debug.go
M src/cmd/compile/internal/ssagen/ssa.go
M src/cmd/link/dwarf_test.go

Change size: M

Delta: 5 files changed, 201 insertions(+), 15 deletions(-)

Branch: refs/heads/master

Submit Requirements:

Code-Review: +1 by Keith Randall, +1 by David Chase, +1 by Derek Parker, +2 by Keith Randall
TryBots-Pass: LUCI-TryBot-Result+1 by Go LUCI

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