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When enhanced DWARF location list generation is enabled (via internal
option -dwarflocationlists), variable entries were missing for "large"
(non-decomposable) locals and formals. From the debugging perspective,
this makes it appear that the variable doesn't exist, which is
probably not what we want. This change insures that a formal/local DIE
is created for these vars (with correct type, line, etc) but with a
conservative ("no info") location.

Change-Id: I10b2e9a51a60c7b4c748e987cdec5f2d8b2837d5
Reviewed-on: https://go-review.googlesource.com/72630


Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>