glsl: Combine many instruction lowering passes into one.

This should save on the overhead of tree-walking and provide a
convenient place to add more instruction lowering in the future.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>

2 files changed, 8 insertions, 7 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index e1cb94452d..610b7e3c3e 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -101,10 +101,12 @@ brw_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
       clone_ir_list(mem_ctx, shader->ir, shader->base.ir);
 
       do_mat_op_to_vec(shader->ir);
-      do_mod_to_fract(shader->ir);
-      do_div_to_mul_rcp(shader->ir);
-      do_sub_to_add_neg(shader->ir);
-      do_explog_to_explog2(shader->ir);
+      lower_instructions(shader->ir,
+			 MOD_TO_FRACT |
+			 DIV_TO_MUL_RCP |
+			 SUB_TO_ADD_NEG |
+			 EXP_TO_EXP2 |
+			 LOG_TO_LOG2);
       do_lower_texture_projection(shader->ir);
       brw_do_cubemap_normalize(shader->ir);
 
diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp
index 1cb8183042..c7a8594f72 100644
--- a/src/mesa/program/ir_to_mesa.cpp
+++ b/src/mesa/program/ir_to_mesa.cpp
@@ -2798,9 +2798,8 @@ _mesa_ir_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
 
 	 /* Lowering */
 	 do_mat_op_to_vec(ir);
-	 do_mod_to_fract(ir);
-	 do_div_to_mul_rcp(ir);
-	 do_explog_to_explog2(ir);
+	 lower_instructions(ir, MOD_TO_FRACT | DIV_TO_MUL_RCP | EXP_TO_EXP2
+			      | LOG_TO_LOG2);
 
 	 progress = do_lower_jumps(ir, true, true, options->EmitNoMainReturn, options->EmitNoCont, options->EmitNoLoops) || progress;