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zink: fix crash in in replicate_derefs

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Only call `nir_src_as_deref` when needed to avoid crashes.
This commit is contained in:
antonino 2023-08-10 17:52:14 +02:00 • committed by Anna Maniscalco
parent 8ba197c9ef
commit e94891fa30
1 changed files with 3 additions and 3 deletions
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6
src/gallium/drivers/zink/zink_compiler.c
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@ -315,15 +315,15 @@ lower_pv_mode_gs_ring_index(nir_builder *b,
static nir_deref_instr*
replicate_derefs(nir_builder *b, nir_deref_instr *old, nir_deref_instr *new)
{
nir_deref_instr *parent = nir_deref_instr_parent(old);
if (!parent)
return new;
nir_deref_instr *parent;
switch(old->deref_type) {
case nir_deref_type_var:
return new;
case nir_deref_type_array:
parent = nir_deref_instr_parent(old);
return nir_build_deref_array(b, replicate_derefs(b, parent, new), old->arr.index.ssa);
case nir_deref_type_struct:
parent = nir_deref_instr_parent(old);
return nir_build_deref_struct(b, replicate_derefs(b, parent, new), old->strct.index);
case nir_deref_type_array_wildcard:
case nir_deref_type_ptr_as_array: