Bug ID: JDK-8298952 All nodes should have type(n) == Value(n) after IGVN

JDK-8298952 : All nodes should have type(n) == Value(n) after IGVN

Type: Enhancement
Component: hotspot
Sub-Component: compiler
Affected Version: 21

Priority: P4
Status: Resolved
Resolution: Fixed

Submitted: 2022-12-16
Updated: 2024-10-28
Resolved: 2023-02-06

Versions (Unresolved/Resolved/Fixed)

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JDK 21
21 b09Fixed

Related Reports

Relates :	JDK-8335866 - C2 compilation fails with "Missed optimization opportunity in PhaseIterGVN"
Relates :	JDK-8343131 - Add -XX:VerifyIterativeGVN=10 to CTW
Relates :	JDK-8298951 - Umbrella: improve CCP and IGVN verification
Relates :	JDK-8316361 - C2: assert(!failure) failed: Missed optimization opportunity in PhaseIterGVN with -XX:VerifyIterativeGVN=10
Relates :	JDK-8318049 - C2: assert(!failure) failed: Missed optimization opportunity in PhaseIterGVN
Relates :	JDK-8320909 - C2 compilation fails with "Missed optimization opportunity in PhaseIterGVN"

Description

Consider exceptions where that is not feasible.
Reuse/refactor code from JDK-8257197.

Comments

Changeset: 8f195ff2 Author: Emanuel Peter <epeter@openjdk.org> Date: 2023-02-06 08:45:48 +0000 URL: https://git.openjdk.org/jdk/commit/8f195ff236000d9c019f8beb2b13355083e211b5

06-02-2023

Commit 11 performance testing successful, no significat change in runtime (One might have been worried about all the small fixes changing the runtime of the product build. Of course the verification code can change the runtime, but that is not enabled in product build.)

30-01-2023

A pull request was submitted for review. URL: https://git.openjdk.org/jdk/pull/11775 Date: 2022-12-23 12:11:12 +0000

26-01-2023