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David Chase fba6066975 cmd/compile: add debugging and stats output to numberlines
This is useful for debugging line number assignment and
also for making sense of pathological line number inputs.

Activated with
-gcflags=-d=ssa/number_lines/stats=1 (the bit matters)
-gcflags=-d=ssa/number_lines/debug

Stats:
"SUM_LINE_RANGE",
   SUM for f in files {MAX line in f {line}-MIN line in f {line}}
"MAXMIN_LINE_RANGE",
   MAX for f in files {MAX line in f {line}} -
   MIN for f in files {MIN line in f {line}}
"MAXFILE", maxfile,
   MAX for f in files {f}
"NFILES", len(entries)
   | files |

Change-Id: I8a7336e6370452fe2e3a62de17606db9bd6a6fd3
Reviewed-on: https://go-review.googlesource.com/c/go/+/174947
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2019-05-16 03:26:42 +00:00
.github .github: don't render author-facing text in ISSUE_TEMPLATE 2018-11-02 04:47:34 +00:00
api api: update next.txt 2019-05-08 16:55:59 +00:00
doc spec: clarify that slice a expression shares underlying array with operand 2019-05-14 22:30:48 +00:00
lib/time time: read 64-bit data if available 2019-02-26 23:10:35 +00:00
misc misc/cgo: disable testcarchive, testplugin during -short test (including all.bash) 2019-05-16 03:25:04 +00:00
src cmd/compile: add debugging and stats output to numberlines 2019-05-16 03:26:42 +00:00
test cmd/compile: make sure to initialize static entries of slices 2019-05-14 16:36:38 +00:00
.gitattributes
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A: Add Maya Rashish (individual CLA) 2019-04-23 14:40:30 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS CONTRIBUTORS: second round of updates for Go 1.12 2019-01-30 18:01:19 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS
README.md README: linkify some paths 2018-06-06 18:07:01 +00:00
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