[Mesa-dev] [Bug 103579] Vertex shader causes compiler to crash in SPIRV-to-NIR

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103579

            Bug ID: 103579
           Summary: Vertex shader causes compiler to crash in SPIRV-to-NIR
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Vulkan/radeon
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: maister at archlinux.us
        QA Contact: mesa-dev at lists.freedesktop.org

Created attachment 135247
  --> https://bugs.freedesktop.org/attachment.cgi?id=135247&action=edit
Repro shader

The attached vertex shader crashes when trying to emit code for

         %23 = OpLoad %19 %22 (gl_InstanceIndex)

with backtrace:
#0  0x00007ffff4a15f66 in vtn_pointer_to_offset (b=0x555556fb88b0,
ptr=0x555557023280, index_out=0x7fffffffb2d0, end_idx_out=0x7fffffffb2c8) at
spirv/vtn_variables.c:521
#1  0x00007ffff4a16e91 in vtn_block_load (b=0x555556fb88b0, src=0x555557023280)
at spirv/vtn_variables.c:838
#2  0x00007ffff4a17211 in vtn_variable_load (b=0x555556fb88b0,
src=0x555557023280) at spirv/vtn_variables.c:927
#3  0x00007ffff4a18f3d in vtn_handle_variables (b=0x555556fb88b0,
opcode=SpvOpLoad, w=0x5555570249c8, count=4) at spirv/vtn_variables.c:1841
#4  0x00007ffff4a088fe in vtn_handle_body_instruction (b=0x555556fb88b0,
opcode=SpvOpLoad, w=0x5555570249c8, count=4) at spirv/spirv_to_nir.c:3092
#5  0x00007ffff4a00cb0 in vtn_foreach_instruction (b=0x555556fb88b0,
start=0x555557024764, end=0x555557024a78, handler=0x7ffff4a08834
<vtn_handle_body_instruction>) at spirv/spirv_to_nir.c:244
#6  0x00007ffff4a0e9e2 in vtn_emit_cf_list (b=0x555556fb88b0,
cf_list=0x555556fa9ef0, switch_fall_var=0x0, has_switch_break=0x0,
handler=0x7ffff4a08834 <vtn_handle_body_instruction>) at spirv/vtn_cfg.c:600
#7  0x00007ffff4a0f20e in vtn_function_emit (b=0x555556fb88b0,
func=0x555556fa9ed0, instruction_handler=0x7ffff4a08834
<vtn_handle_body_instruction>) at spirv/vtn_cfg.c:775
#8  0x00007ffff4a08d9f in spirv_to_nir (words=0x555557024748, word_count=608,
spec=0x0, num_spec=0, stage=MESA_SHADER_VERTEX, entry_point_name=0x555555bdb9b8
"main", ext=0x7fffffffb820, options=0x7ffff4a4fd20 <nir_options>) at
spirv/spirv_to_nir.c:3376
#9  0x00007ffff494e318 in radv_shader_compile_to_nir (device=0x555556e2d400,
module=0x5555570240e0, entrypoint_name=0x555555bdb9b8 "main",
stage=MESA_SHADER_VERTEX, spec_info=0x0) at radv_shader.c:209
#10 0x00007ffff4948d80 in radv_create_shaders (pipeline=0x555556fce9f0,
device=0x555556e2d400, cache=0x555556e354f0, key=..., pStages=0x7fffffffbc10)
at radv_pipeline.c:1821
#11 0x00007ffff4949869 in radv_pipeline_init (pipeline=0x555556fce9f0,
device=0x555556e2d400, cache=0x555556e354f0, pCreateInfo=0x555556fb40c8,
extra=0x0, alloc=0x555556e2d408) at radv_pipeline.c:1983
#12 0x00007ffff494a738 in radv_graphics_pipeline_create
(_device=0x555556e2d400, _cache=0x555556e354f0, pCreateInfo=0x555556fb40c8,
extra=0x0, pAllocator=0x0, pPipeline=0x555557047c70) at radv_pipeline.c:2260
#13 0x00007ffff494a7f6 in radv_CreateGraphicsPipelines (_device=0x555556e2d400,
pipelineCache=0x555556e354f0, count=1, pCreateInfos=0x555556fb40c8,
pAllocator=0x0, pPipelines=0x555557047c70) at radv_pipeline.c:2285

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