git: openjdk/jdk21u-dev: master: 8309978: [x64] Fix useless padding

[Paul Hohensee]

Changeset: 712699f4
Branch: master
Author:    Satyen Subramaniam <ssubramaniam at openjdk.org>
Committer: Paul Hohensee <phh at openjdk.org>
Date:      2025-03-17 22:59:38 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/712699f4483b44f5a22b7a11b5ba93ec91cf1d96

8309978: [x64] Fix useless padding

Backport-of: 0038491abda51b8bd39fabed53624c10abcfe077

! src/hotspot/cpu/x86/c2_intelJccErratum_x86.cpp
! src/hotspot/share/opto/compile.cpp
+ test/hotspot/jtreg/compiler/c2/irTests/TestPadding.java
! test/hotspot/jtreg/compiler/lib/ir_framework/IRNode.java