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nir/lower_system_values: Stop supporting non-SSA 

The one user of this (i965) only ever calls it while in SSA form.

Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Jason Ekstrand 2015-12-14 18:18:03 -08:00
parent 276837cbe4
commit ca5be008bc
1 changed files with 6 additions and 8 deletions
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14
src/glsl/nir/nir_lower_system_values.c
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@ -40,17 +40,15 @@ convert_instr(nir_intrinsic_instr *instr)
void *mem_ctx = ralloc_parent(instr);
assert(instr->dest.is_ssa);
nir_intrinsic_op op = nir_intrinsic_from_system_value(var->data.location);
nir_intrinsic_instr *new_instr = nir_intrinsic_instr_create(mem_ctx, op);
if (instr->dest.is_ssa) {
nir_ssa_dest_init(&new_instr->instr, &new_instr->dest,
instr->dest.ssa.num_components, NULL);
nir_ssa_def_rewrite_uses(&instr->dest.ssa,
nir_src_for_ssa(&new_instr->dest.ssa));
} else {
nir_dest_copy(&new_instr->dest, &instr->dest, mem_ctx);
}
nir_ssa_dest_init(&new_instr->instr, &new_instr->dest,
instr->dest.ssa.num_components, NULL);
nir_ssa_def_rewrite_uses(&instr->dest.ssa,
nir_src_for_ssa(&new_instr->dest.ssa));
nir_instr_insert_before(&instr->instr, &new_instr->instr);
nir_instr_remove(&instr->instr);