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b8d327a438
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Lynn Boger b8d327a438 cmd/compile: fix PPC64.rules for LoweredMove 
A recent performance improvement for PPC64.rules introduced a
regression for the case where the size of a move is <= 8 bytes
and the value used in the offset field of the instruction is not
aligned correctly for the instruction. In the cases where this happened,
the assembler was not detecting the incorrect offset and still generated
the instruction even though it was invalid.

This fix changes the PPC64.rules for the moves that are now failing
to include the correct alignment checks, along some additional testcases
for gc/ssa for the failing alignments.

I will add a fix to the assembler to detect incorrect offsets in
another CL.

This fixes #19907

Change-Id: I3d327ce0ea6afed884725b1824f9217cef2fe6bf
Reviewed-on: https://go-review.googlesource.com/40290
Reviewed-by: Carlos Eduardo Seo <cseo@linux.vnet.ibm.com>
Reviewed-by: David Chase <drchase@google.com>
2017-04-12 15:55:34 +00:00
.github doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
api math/big: define Word as uint instead of uintptr 2017-02-21 19:31:40 +00:00
doc doc: document go1.8.1 2017-04-07 16:45:08 +00:00
lib/time *.bash: always use the same string equality operator 2017-03-14 21:46:31 +00:00
misc plugin: properly handle recursively defined types 2017-04-12 12:46:07 +00:00
src cmd/compile: fix PPC64.rules for LoweredMove 2017-04-12 15:55:34 +00:00
test cmd/compile/internal/gc: don't panic on continue in switch 2017-04-12 14:27:45 +00:00
.gitattributes
.gitignore cmd/dist: move cmd/go z files to cmd/go/internal/cfg 2017-02-03 20:30:52 +00:00
AUTHORS A+C: automated update 2016-12-21 03:22:22 +00:00
CONTRIBUTING.md doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
CONTRIBUTORS A+C: automated update 2016-12-21 03:22:22 +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: add attribution for the Gopher image 2017-02-03 19:39:41 +00:00
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