[Bug 111071] SPIR-V shader processing fails with message about "extra dangling SSA sources"
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Thu Jul 4 23:01:05 UTC 2019
https://bugs.freedesktop.org/show_bug.cgi?id=111071
Bug ID: 111071
Summary: SPIR-V shader processing fails with message about
"extra dangling SSA sources"
Product: Mesa
Version: git
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/Vulkan/intel
Assignee: intel-3d-bugs at lists.freedesktop.org
Reporter: afdx at google.com
QA Contact: intel-3d-bugs at lists.freedesktop.org
CC: jason at jlekstrand.net
Created attachment 144707
--> https://bugs.freedesktop.org/attachment.cgi?id=144707&action=edit
Amber test exposing the problem
Running the attached test using Amber (https://github.com/google/amber):
amber nested-ifs-and-return-in-for-loop.amber
should lead to the test passing.
Instead, Amber crashes and the following is emitted:
extra dangling SSA sources:
0x561df6f9fb88
0x561df6f9ff48
0x561df6f9f7c8
0x561df6fa0308
Aborted
It looks like this message comes from src/compiler/nir/nir_validate.c.
Build: Mesa 19.2.0-devel (git-243db4980c) (Debug)
Device: Intel(R) HD Graphics 630 (Kaby Lake GT2)
Interestingly, using Mesa 18.0.3, the test does not crash, but fails due to an
incorrect colour being probed from the image that is rendered.
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