RFR: 8292640: C2: Remove unused scratch register usages on x86 [v2]
Vladimir Ivanov
vlivanov at openjdk.org
Tue Aug 23 19:40:46 UTC 2022
> (PR is dependent on #9932.)
>
> Remove redundant scratch register usages in C2 generated code on x86.
>
> Stubs put constants in code cache, so they are RIP-relative addressable from generated code. It allows to save on scratch registers when accessing constants.
>
> Testing: hs-tier1 - hs-tier4
Vladimir Ivanov has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase.
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/9933/files
- new: https://git.openjdk.org/jdk/pull/9933/files/aedcb3e1..aedcb3e1
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=9933&range=01
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=9933&range=00-01
Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
Patch: https://git.openjdk.org/jdk/pull/9933.diff
Fetch: git fetch https://git.openjdk.org/jdk pull/9933/head:pull/9933
PR: https://git.openjdk.org/jdk/pull/9933
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