RFR: 8253524: C2: Refactor code that clones predicates during loop unswitching [v3]
Roland Westrelin
roland at openjdk.java.net
Thu Sep 24 06:49:36 UTC 2020
> During unswitching, PhaseIdealLoop::create_slow_version_of_loop()
> calls PhaseIdealLoop::clone_predicates_to_unswitched_loop() twice, one
> for each loops, to clone some predicates above each loop. That code is
> fragile as it (implicitly) requires the fast loop to be processed
> first. I propose calling
> PhaseIdealLoop::clone_predicates_to_unswitched_loop() a single time
> and have it handle both loops in a single pass.
Roland Westrelin has updated the pull request incrementally with one additional commit since the last revision:
extra space
-------------
Changes:
- all: https://git.openjdk.java.net/jdk/pull/317/files
- new: https://git.openjdk.java.net/jdk/pull/317/files/5ab947eb..93f33e9b
Webrevs:
- full: https://webrevs.openjdk.java.net/?repo=jdk&pr=317&range=02
- incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=317&range=01-02
Stats: 3 lines in 2 files changed: 0 ins; 1 del; 2 mod
Patch: https://git.openjdk.java.net/jdk/pull/317.diff
Fetch: git fetch https://git.openjdk.java.net/jdk pull/317/head:pull/317
PR: https://git.openjdk.java.net/jdk/pull/317
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