git: openjdk/jdk: master: 8373251: C2: Ideal() returns nullptr for shift nodes after having modified the shift amount input

[Benoît Maillard]

Changeset: d9f19b3d
Branch: master
Author:    Benoît Maillard <bmaillard at openjdk.org>
Date:      2026-02-24 07:56:59 +0000
URL:       https://git.openjdk.org/jdk/commit/d9f19b3d9e18186454f9e5dd4126ffc9a11e2171

8373251: C2: Ideal() returns nullptr for shift nodes after having modified the shift amount input

Reviewed-by: chagedorn, mchevalier

! src/hotspot/share/opto/mulnode.cpp
+ test/hotspot/jtreg/compiler/c2/igvn/TestIdealReturnReplaceShiftAmount.java
+ test/hotspot/jtreg/compiler/c2/igvn/TestMissingOptReplaceShiftAmount.java