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glsl2: Move the common optimization passes to a helper function.

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These are passes that we expect all codegen to be happy with.  The
other lowering passes for Mesa IR are moved to the Mesa IR generator.
This commit is contained in:
Eric Anholt
2010-08-10 13:06:49 -07:00
parent c55aa4292f
commit 2f4fe15168
4 changed files with 72 additions and 73 deletions
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47
src/glsl/linker.cpp
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@@ -1308,48 +1308,13 @@ link_shaders(struct gl_shader_program *prog)
prog->LinkStatus = true;
}
/* FINISHME: Perform whole-program optimization here. */
/* Do common optimization before assigning storage for attributes,
* uniforms, and varyings. Later optimization could possibly make
* some of that unused.
*/
for (unsigned i = 0; i < prog->_NumLinkedShaders; i++) {
/* Optimization passes */
bool progress;
exec_list *ir = prog->_LinkedShaders[i]->ir;
/* Lowering */
do_mat_op_to_vec(ir);
do_mod_to_fract(ir);
do_div_to_mul_rcp(ir);
do_explog_to_explog2(ir);
do_sub_to_add_neg(ir);
do {
progress = false;
progress = do_function_inlining(ir) || progress;
progress = do_dead_functions(ir) || progress;
progress = do_structure_splitting(ir) || progress;
progress = do_if_simplification(ir) || progress;
progress = do_copy_propagation(ir) || progress;
progress = do_dead_code_local(ir) || progress;
progress = do_dead_code(ir) || progress;
progress = do_tree_grafting(ir) || progress;
progress = do_constant_propagation(ir) || progress;
progress = do_constant_variable(ir) || progress;
progress = do_constant_folding(ir) || progress;
progress = do_algebraic(ir) || progress;
progress = do_if_return(ir) || progress;
#if 0
if (ctx->Shader.EmitNoIfs)
progress = do_if_to_cond_assign(ir) || progress;
#endif
progress = do_vec_index_to_swizzle(ir) || progress;
/* Do this one after the previous to let the easier pass handle
* constant vector indexing.
*/
progress = do_vec_index_to_cond_assign(ir) || progress;
progress = do_swizzle_swizzle(ir) || progress;
} while (progress);
while (do_common_optimization(prog->_LinkedShaders[i]->ir, true))
;
}
assign_uniform_locations(prog);