[lworld] Integrated: 8360851: [lworld] missing # {method} comment in assembly dumping
Manuel Hässig
mhaessig at openjdk.org
Mon Aug 25 08:19:04 UTC 2025
On Wed, 20 Aug 2025 16:24:45 GMT, Manuel Hässig <mhaessig at openjdk.org> wrote:
> `CodeOffsets::Verified_Inline_Entry` and `CodeOffsets::Verified_Inline_Entry` are special among entry point code offsets because they can be disabled with a value of `-1`. The code installation for hotspot deals with this by just setting both to the same value as `CodeOffsets::Verified_Entry` if they are disabled. JVMCI code installation on the other hand, leaves the offsets at `-1`. When printing the assembly of a JVMCI compiled method where both offsets are disabled, the method name is not printed together with the entry point labels. This is due to the disabled entry points having the lowest address due to their negative offset and those disabled entry points thus pointing to an address before the block that is being printed:
>
> https://github.com/openjdk/valhalla/blob/af03598eb81aee17c0657347fd6439475ca8f7ee/src/hotspot/share/code/nmethod.cpp#L3788-L3796
>
> This PR fixes this issue by checking if the entry points that can be disabled point into the code block that is being printed. The regression test is botched together from two existing tests, due to my inexperience with JVMCI (but it works). Suggestions for a better test are welcome.
>
> Testing:
> - [x] tier1,tier2,tier3,valhalla-comp-stress
This pull request has now been integrated.
Changeset: 5132a63c
Author: Manuel Hässig <mhaessig at openjdk.org>
Committer: Tobias Hartmann <thartmann at openjdk.org>
URL: https://git.openjdk.org/valhalla/commit/5132a63ca1ddc99dec7b6d3e6c272af97e1f6351
Stats: 192 lines in 3 files changed: 190 ins; 0 del; 2 mod
8360851: [lworld] missing # {method} comment in assembly dumping
Reviewed-by: thartmann
-------------
PR: https://git.openjdk.org/valhalla/pull/1529
More information about the valhalla-dev
mailing list