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[dev.link] cmd/asm: new -p option, changes to DWARF generation

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Adds a new "-p" option to the assembler, for specifying the import
path of the package being compiled. DWARF generation is now conditional
on having a valid package path -- if we don't know the package path,
then don't emit DWARF.

This is intended to lay the groundwork for removing the various
"patchDWARFname" hacks in the linker.

Change-Id: I5f8315c0881791eb8fe1f2ba32f5bb0ae76f6b98
Reviewed-on: https://go-review.googlesource.com/c/go/+/222718
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
This commit is contained in:
Than McIntosh 2020-03-06 12:43:59 -05:00
parent cdc1b19513
commit 9cae3b33c3
4 changed files with 19 additions and 9 deletions
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4
src/cmd/internal/obj/plist.go
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@ -109,7 +109,9 @@ func Flushplist(ctxt *Link, plist *Plist, newprog ProgAlloc, myimportpath string
continue
}
linkpcln(ctxt, s)
ctxt.populateDWARF(plist.Curfn, s, myimportpath)
if myimportpath != "" {
ctxt.populateDWARF(plist.Curfn, s, myimportpath)
}
}
}