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cmd/compile: record regabi status in DW_AT_producer

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Records if regabi was enabled during compilation in the DW_AT_producer
attribute of each compile unit.
This is useful to debuggers that support the debugCall protocol.

Change-Id: I5ad2c48ebf126aeb8bfb459b53a1a5304550036a
Reviewed-on: https://go-review.googlesource.com/c/go/+/318050
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
This commit is contained in:
Alessandro Arzilli 2021-05-09 09:05:45 +02:00 committed by Than McIntosh
parent a22e317220
commit b83610699a
1 changed files with 8 additions and 0 deletions
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8
src/cmd/compile/internal/dwarfgen/dwarf.go
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@ -531,6 +531,14 @@ func RecordFlags(flags ...string) {
fmt.Fprintf(&cmd, " -%s=%v", f.Name, getter.Get())
}
// Adds flag to producer string singalling whether regabi is turned on or
// off.
// Once regabi is turned on across the board and the relative GOEXPERIMENT
// knobs no longer exist this code should be removed.
if buildcfg.Experiment.RegabiArgs {
cmd.Write([]byte(" regabi"))
}
if cmd.Len() == 0 {
return
}