Bug ID: JDK-8276162 Optimise unsigned comparison pattern

JDK-8276162 : Optimise unsigned comparison pattern

Type: Enhancement
Component: hotspot
Sub-Component: compiler
Affected Version: 18

Priority: P4
Status: Resolved
Resolution: Fixed

Submitted: 2021-10-29
Updated: 2024-05-27
Resolved: 2021-11-16

Versions (Unresolved/Resolved/Fixed)

The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

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JDK 18
18 b24Fixed

Related Reports

Relates :	JDK-8277621 - ARM32: multiple fastdebug failures with "bad AD file" after JDK-8276162
Relates :	JDK-8332920 - Incorrect result with C2 compiled code after JDK-8276162
Relates :	JDK-8277324 - C2 compilation fails with "bad AD file" on x86-32 after JDK-8276162 due to missing match rule
Relates :	JDK-8317521 - Enhance detection of integral unsigned comparisons
Relates :	JDK-8314191 - C2 compilation fails with "bad AD file"
Relates :	JDK-8323154 - C2: assert(cmp != nullptr && cmp->Opcode() == Op_Cmp(bt)) failed: no exit test
Relates :	JDK-8290529 - C2: assert(BoolTest(btest).is_canonical()) failure
Relates :	JDK-8277753 - Long*VectorTests.java fail with "bad AD file" on x86_32 after JDK-8276162

Description

Created based on the discussion： https://github.com/openjdk/jdk/pull/6101

Comments

Changeset: f3eb5014 Author: MeryKitty <anhmdq99@gmail.com> Committer: Tobias Hartmann <thartmann@openjdk.org> Date: 2021-11-16 14:09:53 +0000 URL: https://git.openjdk.java.net/jdk/commit/f3eb5014aa75af4463308f52f2bc6e9fcd2da36c

16-11-2021