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cmd/internal/obj: add a flag to not write referenced symbol names in object file

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The Go object file references (some of) symbols from other
packages by indices, not by names. The linker doesn't need the
symbol names to do the linking. The names are included in the
object file so it is self-contained and tools (objdump, nm) can
read the referenced symbol names. Including the names increases
object file size. Add a flag to disable it on demand (off by
default).

Change-Id: I143a0eb656997497c750b8eb1541341b2aee8f30
Reviewed-on: https://go-review.googlesource.com/c/go/+/404297
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Cherry Mui 2022-05-05 17:22:17 -04:00
parent c1105cfd43
commit b89a194889
6 changed files with 39 additions and 6 deletions
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1
src/cmd/compile/internal/base/debug.go
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@ -31,6 +31,7 @@ type DebugFlags struct {
LocationLists int `help:"print information about DWARF location list creation"`
Nil int `help:"print information about nil checks"`
NoOpenDefer int `help:"disable open-coded defers"`
NoRefName int `help:"do not include referenced symbol names in object file"`
PCTab string `help:"print named pc-value table\nOne of: pctospadj, pctofile, pctoline, pctoinline, pctopcdata"`
Panic int `help:"show all compiler panics"`
Slice int `help:"print information about slice compilation"`