Mesa (master): nir: Add nir_builder helpers for creating load_const intrinsics.

[Kenneth Graunke]

Module: Mesa
Branch: master
Commit: 75c922e0fed41acf28318b082f7f915c752ffe74
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=75c922e0fed41acf28318b082f7f915c752ffe74

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Wed Mar 25 02:11:52 2015 -0700

nir: Add nir_builder helpers for creating load_const intrinsics.

Both prog->nir and tgsi->nir will want to use these.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Connor Abbott <cwabbott0 at gmail.com>
Reviewed-by: Eric Anholt <eric at anholt.net>

---

 src/glsl/nir/nir_builder.h |   35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/src/glsl/nir/nir_builder.h b/src/glsl/nir/nir_builder.h
index 7c4f7fd..fe6cb37 100644
--- a/src/glsl/nir/nir_builder.h
+++ b/src/glsl/nir/nir_builder.h
@@ -47,6 +47,41 @@ nir_builder_insert_after_cf_list(nir_builder *build,
    build->cf_node_list = cf_node_list;
 }
 
+static inline nir_ssa_def *
+nir_build_imm(nir_builder *build, unsigned num_components, nir_const_value value)
+{
+   nir_load_const_instr *load_const =
+      nir_load_const_instr_create(build->shader, num_components);
+   if (!load_const)
+      return NULL;
+
+   load_const->value = value;
+
+   nir_instr_insert_after_cf_list(build->cf_node_list, &load_const->instr);
+
+   return &load_const->def;
+}
+
+static inline nir_ssa_def *
+nir_imm_float(nir_builder *build, float x)
+{
+   nir_const_value v = { { .f = {x, 0, 0, 0} } };
+   return nir_build_imm(build, 1, v);
+}
+
+static inline nir_ssa_def *
+nir_imm_vec4(nir_builder *build, float x, float y, float z, float w)
+{
+   nir_const_value v = { { .f = {x, y, z, w} } };
+   return nir_build_imm(build, 4, v);
+}
+
+static inline nir_ssa_def *
+nir_imm_int(nir_builder *build, int x)
+{
+   nir_const_value v = { { .i = {x, 0, 0, 0} } };
+   return nir_build_imm(build, 1, v);
+}
 
 static inline nir_ssa_def *
 nir_build_alu(nir_builder *build, nir_op op, nir_ssa_def *src0,