* 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 ...
+ * dump Phi nodes (one predecessor, all predecessors 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.
* 4. Verification flag
* This one controls the behavior of node and type verifications
*/
-#ifndef _IRFLAG_H_
-#define _IRFLAG_H_
+#ifndef _FIRM_IR_IRFLAG_H_
+#define _FIRM_IR_IRFLAG_H_
#include "firm_types.h"
* - constant expression evaluation (2 + 5 ==> 7, 3 < 2 ==> false)
* - algebraic simplification (a * 0 ==> 0, a or a ==> a)
* - simplification of tests ( !(a < b) ==> (a >= b))
- * - refining the memory representation
- * - remove store after load
* Default: opt_constant_folding == 1.
*/
void set_opt_constant_folding (int value);
/** Enables/Disables strong if and loop simplification (in optimize_cf). */
void set_opt_control_flow_strong_simplification(int value);
-/** Enables/Disables removal of critical control flow edges. */
-void set_opt_critical_edges(int value);
-
/** Enables/Disables reassociation.
*
* If opt_reassociation == 1 reassociation is performed.
*
* If opt_dead_method_elimination == 1 methods never called are
* removed.
- * Default: opt_dead_method_elimination == 1. */
+ * Default: opt_dead_method_elimination == 1.
+ */
void set_opt_dead_method_elimination (int value);
void set_opt_dead_method_elimination_verbose (int value);
-/** Enable/Disables inlining.
+/** Enable/Disables method inlining.
*
* If opt_inline == 1 the inlining transformation is performed.
*/
void set_opt_if_conversion(int value);
/**
- * Enable/Disable real function call optimization.
+ * Enable/Disable function call optimization.
*
- * Real function call optimization detects "real functions" and
- * allows the floating of Call nodes. A "real function" is one that
+ * Function call optimization detects const and pure functions and
+ * allows the CSE of Call nodes. A const function is one that
* do only evaluate it's parameters and did not read or write memory
- * to compute its results.
+ * to compute its results. Pure functions are allowed to read global memory.
*/
-void set_opt_real_function_call(int value);
+void set_opt_function_call(int value);
/**
* Enable/Disable Confirm node removal during local optimization.
* Enable/Disable Null exception in Load and Store nodes only.
*
* If enabled, only Null pointer exception can occur at Load and
- * store nodes. If it can be proven that the address input of these
+ * store nodes. If it can be proved that the address input of these
* nodes is non-null, the exception edge can safely be removed.
* If disabled, other exceptions (like unaligned access, read-only memory,
* etc.) can occur.
* pointers can only occur as input to Sel nodes.
* If Null pointers are the only source for exceptions in Load and
* Store nodes (as typical in high level languages), we can eliminate
- * exception edges form Load and Store as we can prove that the Sel
+ * exception edges from Load and Store when can prove that the Sel
* nodes representing the Load/Store address have non-null inputs.
* Enabling this flag enables this elimination.
*
*/
void set_opt_sel_based_null_check_elim(int value);
+/**
+ * Enable/Disable Automatic construction of Sync nodes during
+ * Firm construction.
+ *
+ * If this flags is set, sequential non-volatile Loads are automatically
+ * rearranged so that they can be executed in parallel by creating Sync nodes.
+ *
+ * This flags should be set for Java style languages.
+ */
+void set_opt_auto_create_sync(int value);
+
/** Enable/Disable normalizations of the firm representation.
*
- * This flag guards transformations that normalize the firm representation
+ * This flag guards transformations that normalize the Firm representation
* as removing Ids and Tuples, useless Phis, replacing SymConst(id) by
* Const(entity) and others.
* The transformations guarded by this flag are not guarded by flag
* "optimize".
- * Many algorithms operating on firm can not deal with constructs in
+ * Many algorithms operating on Firm can not deal with constructs in
* the non-normalized representation.
- * default: 1
- * @@@ ATTENTION: not all such transformations are guarded by a flag.
+ * default: ON
+ *
+ * @note ATTENTION: not all such transformations are guarded by a flag.
*/
void set_opt_normalize (int value);
/** Enable/Disable precise exception context.
*
- * If enabled, all exceptions form a barrier for value, as in the
+ * If enabled, all exceptions form a barrier for values, as in the
* following example:
*
* @code
*/
void set_opt_precise_exc_context(int value);
+/** Enable/Disable closed world assumption.
+ *
+ * If enabled, optimizations expect to know the "whole world", i.e. no
+ * external types or callers exist.
+ * This enables some powerful optimizations.
+ */
+void set_opt_closed_world(int value);
+
/**
* Save the current optimization state.
*/
FIRM_VERIFICATION_ERROR_ONLY = 3 /**< do node verification, but NEVER do assert nor report */
} firm_verification_t;
-/** Select verification of nodes.
+/** Select verification of IR nodes and types.
*
* Per default the verification is in mode NODE_VERIFICATION_ASSERT.
* Turn the verification off during development to check partial implementations.
*/
void do_node_verification(firm_verification_t mode);
-#endif /* _IRFLAG_H_ */
+#endif /* _FIRM_IR_IRFLAG_H_ */
projects / libfirm / blobdiff