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Keith Randall 7502ed3b90 cmd/compile: when merging instructions, prefer line number of faulting insn
Normally this happens when combining a sign extension and a load.  We
want the resulting combo-instruction to get the line number of the
load, not the line number of the sign extension.

For each rule, compute where we should get its line number by finding
a value on the match side that can fault.  Use that line number for
all the new values created on the right-hand side.

Fixes #27201

Change-Id: I19b3c6f468fff1a3c0bfbce2d6581828557064a3
Reviewed-on: https://go-review.googlesource.com/c/156937
Reviewed-by: David Chase <drchase@google.com>
2019-01-14 22:41:33 +00:00
.github .github: don't render author-facing text in ISSUE_TEMPLATE 2018-11-02 04:47:34 +00:00
api api: add os.(*File).SyscallConn to go1.12.txt 2019-01-02 21:21:53 +00:00
doc doc: add Go 1.12 release note for trigonometric reductions in math 2019-01-10 21:21:34 +00:00
lib/time lib/time: update tzdata to 2018i 2019-01-07 20:14:03 +00:00
misc runtime: skip writes to persistent memory in cgo checker 2019-01-04 02:40:56 +00:00
src cmd/compile: when merging instructions, prefer line number of faulting insn 2019-01-14 22:41:33 +00:00
test cmd/compile: when merging instructions, prefer line number of faulting insn 2019-01-14 22:41:33 +00:00
.gitattributes
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: add VMware as author, Venil Noronha as contributor 2018-08-31 02:14:24 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS CONTRIBUTORS: first round of automated updates for Go 1.12 2019-01-04 18:17:38 +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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