[Mesa-dev] [PATCH 37/44] nir: Make ballot intrinsics variable-size

[Jason Ekstrand]

This way they can return either a uvec4 or a uint64_t.  At the moment,
this is a no-op since we still always return a uint64_t.
---
 src/compiler/glsl/glsl_to_nir.cpp          |  1 +
 src/compiler/nir/nir_intrinsics.h          | 12 ++++++------
 src/compiler/nir/nir_lower_system_values.c |  1 +
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/compiler/glsl/glsl_to_nir.cpp b/src/compiler/glsl/glsl_to_nir.cpp
index c984c16..6c19a44 100644
--- a/src/compiler/glsl/glsl_to_nir.cpp
+++ b/src/compiler/glsl/glsl_to_nir.cpp
@@ -1175,6 +1175,7 @@ nir_visitor::visit(ir_call *ir)
       case nir_intrinsic_ballot: {
          nir_ssa_dest_init(&instr->instr, &instr->dest,
                            ir->return_deref->type->vector_elements, 64, NULL);
+         instr->num_components = ir->return_deref->type->vector_elements;
 
          ir_rvalue *value = (ir_rvalue *) ir->actual_parameters.get_head();
          instr->src[0] = nir_src_for_ssa(evaluate_rvalue(value));
diff --git a/src/compiler/nir/nir_intrinsics.h b/src/compiler/nir/nir_intrinsics.h
index 54a51f8..c346c0e 100644
--- a/src/compiler/nir/nir_intrinsics.h
+++ b/src/compiler/nir/nir_intrinsics.h
@@ -102,7 +102,7 @@ INTRINSIC(shader_clock, 0, ARR(0), true, 2, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_
  *
  * GLSL functions from ARB_shader_ballot.
  */
-INTRINSIC(ballot, 1, ARR(1), true, 1, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
+INTRINSIC(ballot, 1, ARR(1), true, 0, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
 INTRINSIC(read_invocation, 2, ARR(0, 1), true, 0, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
 INTRINSIC(read_first_invocation, 1, ARR(0), true, 0, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
 
@@ -350,11 +350,11 @@ SYSTEM_VALUE(layer_id, 1, 0, xx, xx, xx)
 SYSTEM_VALUE(view_index, 1, 0, xx, xx, xx)
 SYSTEM_VALUE(subgroup_size, 1, 0, xx, xx, xx)
 SYSTEM_VALUE(subgroup_invocation, 1, 0, xx, xx, xx)
-SYSTEM_VALUE(subgroup_eq_mask, 1, 0, xx, xx, xx)
-SYSTEM_VALUE(subgroup_ge_mask, 1, 0, xx, xx, xx)
-SYSTEM_VALUE(subgroup_gt_mask, 1, 0, xx, xx, xx)
-SYSTEM_VALUE(subgroup_le_mask, 1, 0, xx, xx, xx)
-SYSTEM_VALUE(subgroup_lt_mask, 1, 0, xx, xx, xx)
+SYSTEM_VALUE(subgroup_eq_mask, 0, 0, xx, xx, xx)
+SYSTEM_VALUE(subgroup_ge_mask, 0, 0, xx, xx, xx)
+SYSTEM_VALUE(subgroup_gt_mask, 0, 0, xx, xx, xx)
+SYSTEM_VALUE(subgroup_le_mask, 0, 0, xx, xx, xx)
+SYSTEM_VALUE(subgroup_lt_mask, 0, 0, xx, xx, xx)
 SYSTEM_VALUE(subgroup_id, 1, 0, xx, xx, xx)
 
 /* Blend constant color values.  Float values are clamped. */
diff --git a/src/compiler/nir/nir_lower_system_values.c b/src/compiler/nir/nir_lower_system_values.c
index ba20d30..c21a468 100644
--- a/src/compiler/nir/nir_lower_system_values.c
+++ b/src/compiler/nir/nir_lower_system_values.c
@@ -125,6 +125,7 @@ convert_block(nir_block *block, nir_builder *b)
             nir_intrinsic_from_system_value(var->data.location);
          nir_intrinsic_instr *load = nir_intrinsic_instr_create(b->shader, op);
          nir_ssa_dest_init(&load->instr, &load->dest, 1, 64, NULL);
+         load->num_components = 1;
          nir_builder_instr_insert(b, &load->instr);
          sysval = &load->dest.ssa;
          break;
-- 
2.5.0.400.gff86faf