i965/nir/vec4: Mark as unreachable ops that should be already lowered

NIR ALU operations:
   * nir_op_fabs
   * nir_op_iabs
   * nir_op_fneg
   * nir_op_ineg
   * nir_op_fsat
        should be lowered by lower_source mods

   * nir_op_fdiv
        should be lowered in the compiler by DIV_TO_MUL_RCP.

   * nir_op_fmod
        should be lowered in the compiler by MOD_TO_FLOOR.

   * nir_op_fsub
   * nir_op_isub
        should be handled by ir_sub_to_add_neg.

Reviewed-by: Jason Ekstrand <[email protected]>

1 files changed, 17 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
index a586f902f67..049edbdf099 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
@@ -1242,6 +1242,23 @@ vec4_visitor::nir_emit_alu(nir_alu_instr *instr)
       break;
    }
 
+   case nir_op_fabs:
+   case nir_op_iabs:
+   case nir_op_fneg:
+   case nir_op_ineg:
+   case nir_op_fsat:
+      unreachable("not reached: should be lowered by lower_source mods");
+
+   case nir_op_fdiv:
+      unreachable("not reached: should be lowered by DIV_TO_MUL_RCP in the compiler");
+
+   case nir_op_fmod:
+      unreachable("not reached: should be lowered by MOD_TO_FLOOR in the compiler");
+
+   case nir_op_fsub:
+   case nir_op_isub:
+      unreachable("not reached: should be handled by ir_sub_to_add_neg");
+
    default:
       unreachable("Unimplemented ALU operation");
    }