X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firflag.h;h=f94341ec637d0e66c5637088b28483952b594350;hb=637542932dc27dcdfc7def09b58d9d5d4c34fb77;hp=69421ef8c90f7d0b249981aca2ad9771aca70ffc;hpb=19a8e44d561f4eb9d766a790a007641086d00581;p=libfirm diff --git a/ir/ir/irflag.h b/ir/ir/irflag.h index 69421ef8c..f94341ec6 100644 --- a/ir/ir/irflag.h +++ b/ir/ir/irflag.h @@ -3,7 +3,7 @@ * File name: ir/ir/irflag.h * Purpose: Flags to control optimizations. * Author: Christian Schaefer, Goetz Lindenmaier - * Modified by: + * Modified by: Michael Beck * Created: * CVS-ID: $Id$ * Copyright: (c) 1999-2003 Universität Karlsruhe @@ -13,9 +13,22 @@ /** * @file irflag.h * - * Optimization flags. + * Flags to customize the behaviour of libfirm. * * @author Christian Schaefer + * + * There are the following groups of flags: + * 1. Optimization flags. + * a) There is a flag, 'optimize' to turn on/off all optimizations. + * b) There are flags for each individual optimization. Some flags turns + * transformations in several algorithms on/off. + * 2. Normalization flags. + * These flags steer transformations of the ir that improve it, as removing + * dump Phi nodes (one predecessor, all preds are equal ...), Ids, Tuples ... + * 3. Verbosity flags. + * a) Flags to steer the level of the information. + * b) Flags to steer in which phase information should be dumped. + * */ #ifndef _IRFLAG_H_ @@ -33,7 +46,17 @@ typedef unsigned optimization_state_t; * Default: optimize == 1. */ void set_optimize (int value); -int get_optimize(void); +int get_optimize(void); + +/** This function enables/disables output of information about phases and + * controls the verbosity level. + * + * 0: no output at all. + * 1: very short output + * >>1: very verbose output. + */ +void set_firm_verbosity (int value); +int get_firm_verbosity (void); /** Enables/Disables constant folding optimization. * @@ -47,6 +70,29 @@ int get_optimize(void); */ void set_opt_constant_folding (int value); +/** Enables/Disables loop unrolling. + * + * If opt_loop_unrolling == 1 perform loop_unrolling. + * See loop_unrolling.h. + * + * Default: opt_loop_unrolling = 1; + */ +void set_opt_loop_unrolling (int value); + +/** Enables/Disables output of information about loop unrolling. + */ +void set_opt_loop_unrolling_verbose (int value); + +/** Enables/Disables removal of redundant Loads and Stores. + * + * - Remove Store that overwrites a just stored value (WAW). + * - Remove Store if it stores a value just loaded (WAR with the same value). + * - Remove Load that loads a value just saved (RAW with the same value). + * - remove Load that loads a value already loaded (RAR) + * - replace Load of constant values with constants (RC) + */ +void set_opt_redundant_LoadStore(int value); + /** Enables/Disables constant subexpression elimination. * * If opt_cse == 1 perform constant subexpression elimination. @@ -54,18 +100,37 @@ void set_opt_constant_folding (int value); */ void set_opt_cse (int value); +/** Returns constant folding optimization setting. */ +int get_opt_cse(void); + /** Enables/Disables global constant subexpression elimination. * * If opt_global_cse == 1 and opt_cse == 1 perform intra procedure * constant subexpression elimination for floating nodes. Intra * procedure cse gets the graph into state "floating". It is necessary - * to run pre/code motion to get the graph back into state "pinned". + * to run pre/code motion to get the graph back into state "op_pin_state_pinned". * right after a call to local_optimize with global cse turned on. * Default: opt_global_cse == 0. */ void set_opt_global_cse (int value); +/** Enables/Disables strength reduction. + * + * If opt_strength_red == 1 perform strength reduction. + * See strenth_red.h. + * + * Default: opt_strength_red = 1; + */ +void set_opt_strength_red (int value); + +/** Enables/Disables output of information about strength reduction. + */ +void set_opt_strength_red_verbose (int value); + /** Enables/Disables unreachable code elimination. + * + * If set, evaluate conditions of conditional branch and replace the + * branch with a Jmp/Bad Tuple. * * If opt_unreachable_code == 1 replace nodes (except Block, * Phi and Tuple) with a Bad predecessor by the Bad node. @@ -121,13 +186,65 @@ void set_opt_dead_method_elimination_verbose (int value); */ void set_opt_inline (int value); -/** Enable/Disable optimization of dynamic method dispatch +/** Enable/Disable optimization of dynamic method dispatch. * * This flag enables/disables the optimization of dynamic method dispatch. * If the flag is turned on Sel nodes can be replaced by Const nodes representing * the address of a function. */ void set_opt_dyn_meth_dispatch (int value); +int get_opt_dyn_meth_dispatch (void); + +/** Enable/Disable type optimization of cast nodes. + * + * Controls the optimizations in tropt.h. Default: on. + */ +void set_opt_optimize_class_casts (int value); +int get_opt_optimize_class_casts (void); +void set_opt_optimize_class_casts_verbose (int value); +int get_opt_optimize_class_casts_verbose (void); + +/** Restricts the behaviour of cast optimization. + * + * If set, downcast are not optimized if they might be + * illegal as in (Super)(Sub) (new Super()). Default: + * 0 == not suppressed. + */ +void set_opt_suppress_downcast_optimization(int value); +int get_opt_suppress_downcast_optimization(void); + +/** Enable/Disable optimization of tail-recursion calls. + * + * This flag enables/disables the optimization tail-recursion call. + * If the flag is turned on tail-recursion calls are optimized into loops. + */ +void set_opt_tail_recursion(int value); +void set_opt_tail_recursion_verbose(int value); + +/** Enable/Disable floating of fragile ops. + * + * This flags enables/disables the floating of fragile operations. + * If this flag is on, fragile operations which are known to NOT raise + * an exception can be place to other basic blocks. + * Otherwise they remain in the block they were created. + */ +void set_opt_fragile_ops(int value); + +/** + * Enable/Disable if conversion. + * + * If conversion tries to turn Conds into Mux nodes to eliminate + * control flow. + */ +void set_opt_if_conversion(int value); + +/** + * Enable/Disable real function call optimization. + * + * Real function call optimization detects "real functions" and + * allows the floationg of Call nodes. + */ +void set_opt_real_function_call(int value); /** Enable/Disable normalizations of the firm representation. * @@ -143,12 +260,6 @@ void set_opt_dyn_meth_dispatch (int value); */ void set_opt_normalize (int value); -/** Enable/Disable optimization of tail-recursion calls. - * - * This flag enables/disables the optimization tail-recursion call. - * If the flag is turned on tail-recursion calls are optimized into loops. - */ -void set_opt_tail_recursion(int value); /** Enable/Disable precise exception context. */ void set_opt_precise_exc_context(int value);