[Mesa-dev] [PATCH v4 013/129] ttn: convert to deref instructions

[Jason Ekstrand]

From: Rob Clark <robdclark at gmail.com>

Signed-off-by: Rob Clark <robdclark at gmail.com>
---
 src/gallium/auxiliary/nir/tgsi_to_nir.c | 52 +++++++++------------------------
 1 file changed, 13 insertions(+), 39 deletions(-)

diff --git a/src/gallium/auxiliary/nir/tgsi_to_nir.c b/src/gallium/auxiliary/nir/tgsi_to_nir.c
index b5b4869..1b31b56 100644
--- a/src/gallium/auxiliary/nir/tgsi_to_nir.c
+++ b/src/gallium/auxiliary/nir/tgsi_to_nir.c
@@ -487,27 +487,15 @@ ttn_src_for_indirect(struct ttn_compile *c, struct tgsi_ind_register *indirect);
 /* generate either a constant or indirect deref chain for accessing an
  * array variable.
  */
-static nir_deref_var *
-ttn_array_deref(struct ttn_compile *c, nir_intrinsic_instr *instr,
-                nir_variable *var, unsigned offset,
+static nir_deref_instr *
+ttn_array_deref(struct ttn_compile *c, nir_variable *var, unsigned offset,
                 struct tgsi_ind_register *indirect)
 {
-   nir_deref_var *deref = nir_deref_var_create(instr, var);
-   nir_deref_array *arr = nir_deref_array_create(deref);
-
-   arr->base_offset = offset;
-   arr->deref.type = glsl_get_array_element(var->type);
-
-   if (indirect) {
-      arr->deref_array_type = nir_deref_array_type_indirect;
-      arr->indirect = nir_src_for_ssa(ttn_src_for_indirect(c, indirect));
-   } else {
-      arr->deref_array_type = nir_deref_array_type_direct;
-   }
-
-   deref->deref.child = &arr->deref;
-
-   return deref;
+   nir_deref_instr *deref = nir_build_deref_var(&c->build, var);
+   nir_ssa_def *index = nir_imm_int(&c->build, offset);
+   if (indirect)
+      index = nir_iadd(&c->build, index, ttn_src_for_indirect(c, indirect));
+   return nir_build_deref_array(&c->build, deref, index);
 }
 
 static nir_src
@@ -526,18 +514,10 @@ ttn_src_for_file_and_index(struct ttn_compile *c, unsigned file, unsigned index,
       if (c->temp_regs[index].var) {
          unsigned offset = c->temp_regs[index].offset;
          nir_variable *var = c->temp_regs[index].var;
-         nir_intrinsic_instr *load;
-
-         load = nir_intrinsic_instr_create(b->shader,
-                                           nir_intrinsic_load_var);
-         load->num_components = 4;
-         load->variables[0] = ttn_array_deref(c, load, var, offset, indirect);
-         nir_ssa_dest_init(&load->instr, &load->dest,
-                           4, 32, NULL);
-         nir_builder_instr_insert(b, &load->instr);
-
-         src = nir_src_for_ssa(&load->dest.ssa);
+         nir_ssa_def *load = nir_load_deref(&c->build,
+               ttn_array_deref(c, var, offset, indirect));
 
+         src = nir_src_for_ssa(load);
       } else {
          assert(!indirect);
          src.reg.reg = c->temp_regs[index].reg;
@@ -1829,17 +1809,11 @@ ttn_emit_instruction(struct ttn_compile *c)
    if (var) {
       unsigned index = tgsi_dst->Register.Index;
       unsigned offset = c->temp_regs[index].offset;
-      nir_intrinsic_instr *store =
-         nir_intrinsic_instr_create(b->shader, nir_intrinsic_store_var);
       struct tgsi_ind_register *indirect = tgsi_dst->Register.Indirect ?
                                            &tgsi_dst->Indirect : NULL;
-
-      store->num_components = 4;
-      nir_intrinsic_set_write_mask(store, dest.write_mask);
-      store->variables[0] = ttn_array_deref(c, store, var, offset, indirect);
-      store->src[0] = nir_src_for_reg(dest.dest.reg.reg);
-
-      nir_builder_instr_insert(b, &store->instr);
+      nir_src val = nir_src_for_reg(dest.dest.reg.reg);
+      nir_store_deref(b, ttn_array_deref(c, var, offset, indirect),
+                      nir_ssa_for_src(b, val, 4), dest.write_mask);
    }
 }
 
-- 
2.5.0.400.gff86faf