Bug 91544

Summary: [i965, regression, bisected] regression of several tests in 93977d3a151675946c03e
Product: Mesa Reporter: Dylan Baker <baker.dylan.c>
Component: glsl-compilerAssignee: Ian Romanick <idr>
Status: RESOLVED FIXED QA Contact: Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity: normal    
Priority: medium CC: kenneth, mark.a.janes, t_arceri
Version: git   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
i915 platform: i915 features:

Description Dylan Baker 2015-08-03 23:33:44 UTC

This seems like a red herring, but I can reproduce this on my HSW system personally. Note that some of the tests fail sporatically
Comment 1 Ian Romanick 2015-08-04 01:40:38 UTC
Ken mentioned similar failures that bisected to 7ac946e546bba440f87ce95ef022745201744f9c.

There's probably some field that was getting initialized to zero previously that's getting a non-zero value now.  I'll take a look at it tomorrow.
Comment 2 Ian Romanick 2015-08-04 01:55:34 UTC
Just skimming the code, I'll bet a quarter that the problem is stream being initialized to -1 instead of 0.  ir_variable has become such a complete disaster. :(
Comment 3 Ian Romanick 2015-08-05 15:55:51 UTC
*** Bug 91565 has been marked as a duplicate of this bug. ***
Comment 4 Ian Romanick 2015-08-05 15:56:14 UTC
There is a patch on the list for this:

Comment 5 Michel Dänzer 2015-08-06 02:58:30 UTC
Module: Mesa
Branch: master
Commit: f7ac4ef4eeea737115d0b574fed7ecae46426072
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f7ac4ef4eeea737115d0b574fed7ecae46426072

Author: Michel Dänzer <michel.daenzer@amd.com>
Date:   Wed Aug  5 18:17:14 2015 +0900

glsl: Initialize patch member of glsl_struct_field

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