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i965/nir/vec4: Lower "vecN" instructions and mark them unreachable

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This enables NIR pass "lower_vec_to_movs" on shaders that work on vec4.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Antia Puentes 2015-06-16 22:58:15 +02:00 • committed by Jason Ekstrand
parent 79154d99d6
commit e4f02f47e7
2 changed files with 10 additions and 0 deletions
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5
src/mesa/drivers/dri/i965/brw_nir.c
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@ -175,6 +175,11 @@ brw_create_nir(struct brw_context *brw,
nir_convert_from_ssa(nir, is_scalar);
nir_validate_shader(nir);
if (!is_scalar) {
nir_lower_vec_to_movs(nir);
nir_validate_shader(nir);
}
/* This is the last pass we run before we start emitting stuff. It
* determines when we need to insert boolean resolves on Gen <= 5. We
* run it last because it stashes data in instr->pass_flags and we don't

5
src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
View file

@ -677,6 +677,11 @@ vec4_visitor::nir_emit_alu(nir_alu_instr *instr)
inst->saturate = instr->dest.saturate;
break;
case nir_op_vec2:
case nir_op_vec3:
case nir_op_vec4:
unreachable("not reached: should be handled by lower_vec_to_movs()");
default:
unreachable("Unimplemented ALU operation");
}