nir+vtn: vec8+vec16 support

This introduces new vec8 and vec16 instructions (which are the only
instructions taking more than 4 sources), in order to construct 8 and 16
component vectors.

In order to avoid fixing up the non-autogenerated nir_build_alu() sites
and making them pass 16 src args for the benefit of the two instructions
that take more than 4 srcs (ie vec8 and vec16), nir_build_alu() is has
nir_build_alu_tail() split out and re-used by nir_build_alu2() (which is
used for the > 4 src args case).

v2 (Karol Herbst):
  use nir_build_alu2 for vec8 and vec16
  use python's array multiplication syntax
  add nir_op_vec helper
  simplify nir_vec
  nir_build_alu_tail -> nir_builder_alu_instr_finish_and_insert
  use nir_build_alu for opcodes with <= 4 sources
v3 (Karol Herbst):
  fix nir_serialize
v4 (Dave Airlie):
  fix serialization of glsl_type
  handle vec8/16 in lowering of bools
v5 (Karol Herbst):
  fix load store vectorizer

Signed-off-by: Karol Herbst <[email protected]>
Reviewed-by: Dave Airlie <[email protected]>

1 files changed, 7 insertions, 1 deletions

diff --git a/src/compiler/nir/nir_search.c b/src/compiler/nir/nir_search.c
index c1b179525ab..458a4eeb1ce 100644
--- a/src/compiler/nir/nir_search.c
+++ b/src/compiler/nir/nir_search.c
@@ -56,7 +56,13 @@ static bool
 nir_algebraic_automaton(nir_instr *instr, struct util_dynarray *states,
                         const struct per_op_table *pass_op_table);
 
-static const uint8_t identity_swizzle[NIR_MAX_VEC_COMPONENTS] = { 0, 1, 2, 3 };
+static const uint8_t identity_swizzle[NIR_MAX_VEC_COMPONENTS] =
+{
+    0,  1,  2,  3,
+    4,  5,  6,  7,
+    8,  9, 10, 11,
+   12, 13, 14, 15,
+};
 
 /**
  * Check if a source produces a value of the given type.