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Than McIntosh 162d4f9c92 cmd/compile: regabi support for DWARF location expressions
Revise the code that generates DWARF location expressions for input
parameters to get it to work properly with the new register ABI when
optimization is turned off.

The previously implementation assumed stack locations for all
input+output parameters when -N (disable optimization) was in effect.
In the new implementation, a register-resident input parameter is
given a 2-element location list, the first list element pointing to
the ABI register(s) containing the param, and the second element
pointing to the stack home once it has been spilled.

NB, this change fixes a bunch of the Delve pkg/proc unit tests (maybe
about half of the outstanding failures). Still a good number that need
to be investigated, however.

Updates #40724.
Updates #45720.

Change-Id: I743bbb9af187bcdebeb8e690fdd6db58094ca415
Reviewed-on: https://go-review.googlesource.com/c/go/+/314431
Trust: Than McIntosh <thanm@google.com>
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
2021-04-30 19:38:07 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api api: update next.txt 2021-04-30 00:32:42 +00:00
doc cmd/go: prune go.mod and go.sum files from vendored dependencies 2021-04-30 18:14:18 +00:00
lib/time lib/time, time/tzdata: update tzdata to 2021a 2021-01-25 16:08:46 +00:00
misc runtime: rename walltime1 to walltime 2021-04-29 14:15:04 +00:00
src cmd/compile: regabi support for DWARF location expressions 2021-04-30 19:38:07 +00:00
test cmd/compile: use desired register only if it satisfies register mask 2021-04-28 16:13:40 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
AUTHORS A+C: add Weixie Cui (individual CLA) 2021-04-30 16:27:50 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS A+C: add Weixie Cui (individual CLA) 2021-04-30 16:27:50 +00:00
LICENSE
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README.md README: pull gopher image from website 2021-02-16 18:25:10 +00:00
SECURITY.md SECURITY.md: update go versions 2019-09-26 15:34:57 +00:00

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