[Bug 109064] temp_comp_access::get_required_live_range: enclosing_scope_first_write is NULL

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Bug ID 109064
Summary temp_comp_access::get_required_live_range: enclosing_scope_first_write is NULL
Product Mesa
Version 18.3
Hardware Other
OS All
Status NEW
Severity normal
Priority medium
Component Drivers/Gallium/r600
Assignee dri-devel@lists.freedesktop.org
Reporter alex_y_xu@yahoo.ca
QA Contact dri-devel@lists.freedesktop.org

Created attachment 142814 [details]
FS_bb6bfb3018b248ae9b31f50f6cc3c1401308f621.glsl

When loading a game in The Witcher 3, the game crashes.

#0  (anonymous namespace)::temp_comp_access::get_required_live_range
(this=0x7f8f6d259928) at
../mesa-18.3.1/src/mesa/state_tracker/st_glsl_to_tgsi_temprename.cpp:936
        keep_for_full_loop = true
        enclosing_scope = 0x7f8ff7beb0c0
        enclosing_scope_first_read = 0x7f8ff7beb0c0
        enclosing_scope_first_write = <optimized out>
        conditional = <optimized out>
        keep_for_full_loop = <optimized out>
        enclosing_scope_first_read = <optimized out>
        enclosing_scope_first_write = <optimized out>
        conditional = <optimized out>
        enclosing_scope = <optimized out>

I used MESA_SHADER_DUMP_PATH to dump the shaders, and attached the last one in
chronological order (I assume this is probably the one that crashed).


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