Bug ID: JDK-8331088 Incorrect TraceLoopPredicate output

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JDK 23
23 b22Fixed

This line in PhaseIdealLoop::loop_predication_impl_helper prints the node index of the lower bounds check, not the upper bounds check:

if (TraceLoopPredicate) tty->print_cr("upper bound check if: %d", lower_bound_iff->_idx);

[jdk21u-fix-request] Approval Request from Satyen Subramaniam for backport. Fixes bug in PhaseIdealLoop::loop_predication_impl_helper, which prints the node index of the lower bounds check, rather than the upper bounds check. Risk: Low. Tip change was merged in April 2024, and only changes logging messages. Testing: * GHA Sanity Checks * Tier 1 and 2 tests locally
03-04-2025
A pull request was submitted for review. Branch: master URL: https://git.openjdk.org/jdk21u-dev/pull/1577 Date: 2025-04-02 17:38:21 +0000
02-04-2025
Changeset: 19e46eed Author: Sonia Zaldana Calles <szaldana@openjdk.org> Committer: Dean Long <dlong@openjdk.org> Date: 2024-05-02 01:41:09 +0000 URL: https://git.openjdk.org/jdk/commit/19e46eed580339a61fd1309c2cc7040e8c83597d
02-05-2024
A pull request was submitted for review. URL: https://git.openjdk.org/jdk/pull/19004 Date: 2024-04-29 18:11:51 +0000
29-04-2024
Good catch, looks like it was wrong since it was introduced by JDK-8203197. ILW = Wrong diagnostic output (debug only), upper limit with TraceLoopPredicate, no workaround = LLH = P5
25-04-2024