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compiler,linker: support for DWARF inlined instances

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Compiler and linker changes to support DWARF inlined instances,
see https://go.googlesource.com/proposal/+/HEAD/design/22080-dwarf-inlining.md
for design details.

This functionality is gated via the cmd/compile option -gendwarfinl=N,
where N={0,1,2}, where a value of 0 disables dwarf inline generation,
a value of 1 turns on dwarf generation without tracking of formal/local
vars from inlined routines, and a value of 2 enables inlines with
variable tracking.

Updates #22080

Change-Id: I69309b3b815d9fed04aebddc0b8d33d0dbbfad6e
Reviewed-on: https://go-review.googlesource.com/75550
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
This commit is contained in:
Than McIntosh 2017-10-06 11:32:28 -04:00
parent dbb1d198ab
commit 4435fcfd6c
17 changed files with 1950 additions and 152 deletions
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2
src/runtime/runtime-gdb_test.go
View file

@ -218,7 +218,7 @@ func testGdbPython(t *testing.T, cgo bool) {
// a collection of scalar vars holding the fields. In such cases
// the DWARF variable location expression should be of the
// form "var.field" and not just "field".
infoLocalsRe := regexp.MustCompile(`^slicevar.len = `)
infoLocalsRe := regexp.MustCompile(`.*\sslicevar.cap = `)
if bl := blocks["info locals"]; !infoLocalsRe.MatchString(bl) {
t.Fatalf("info locals failed: %s", bl)
}