nir: Make load_const SSA-only

As it was, we weren't ever using load_const in a non-SSA way.  This allows
us to substantially simplify the load_const instruction.  If we ever need a
non-SSA constant load, we can do a load_const and an imov.

Reviewed-by: Connor Abbott <[email protected]>

1 files changed, 0 insertions, 7 deletions

diff --git a/src/glsl/nir/nir_opt_dce.c b/src/glsl/nir/nir_opt_dce.c
index 8a7490dc3e0..9778e9ed6a6 100644
--- a/src/glsl/nir/nir_opt_dce.c
+++ b/src/glsl/nir/nir_opt_dce.c
@@ -69,7 +69,6 @@ init_instr(nir_instr *instr, struct exec_list *worklist)
    nir_alu_instr *alu_instr;
    nir_intrinsic_instr *intrin_instr;
    nir_tex_instr *tex_instr;
-   nir_load_const_instr *load_const_instr;
 
    instr->live = false;
 
@@ -104,12 +103,6 @@ init_instr(nir_instr *instr, struct exec_list *worklist)
          worklist_push(worklist, instr);
       break;
 
-   case nir_instr_type_load_const:
-      load_const_instr = nir_instr_as_load_const(instr);
-      if (!load_const_instr->dest.is_ssa)
-         worklist_push(worklist, instr);
-      break;
-
    default:
       break;
    }