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Keith Randall 888047c310 cmd/compile: fix conditional move rule on PPC64
Similar to CL 456556 but for ppc64 instead of arm64.

Change docs about how booleans are stored in registers for ppc64.
We now don't promise to keep the upper bits zeroed; they might be junk.

To test, I changed the boolean generation instructions (MOVBZload* and ISEL*
with boolean type) to OR in 0x100 to the result. all.bash still passed,
so I think nothing else is depending on the upper bits of booleans.

Update #57184

Change-Id: Ie66f8934a0dafa34d0a8c2a37324868d959a852c
Reviewed-on: https://go-review.googlesource.com/c/go/+/456437
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: KAMPANAT THUMWONG (KONG PC) <1992kongpc.kth@gmail.com>
Run-TryBot: Archana Ravindar <aravind5@in.ibm.com>
2022-12-11 16:34:38 +00:00
.github .github: update issue label for pkgsite-removal 2022-09-07 16:00:20 +00:00
api api: promote next to go1.20 2022-12-07 16:56:12 +00:00
doc doc: fix typo in 1.20 release notes 2022-12-09 10:49:03 +00:00
lib/time lib/time: update to 2022g/2022g 2022-12-07 00:25:27 +00:00
misc cmd/cgo: walk {FuncType,TypeSpec}.TypeParams fields 2022-11-30 21:45:10 +00:00
src cmd/compile: fix conditional move rule on PPC64 2022-12-11 16:34:38 +00:00
test cmd/compile: fix conditional select rule 2022-12-09 21:38:33 +00:00
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README.md README: update from CC-BY-3.0 to CC-BY-4.0 2022-11-02 20:14:56 +00:00
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