-/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-** All rights reserved.
-**
-** Authors: Christian Schaefer
-**
-** irflag --- optimization flags
-*/
+/*
+ * Project: libFIRM
+ * File name: ir/ir/irflag.c
+ * Purpose: Flags to control optimizations.
+ * Author: Christian Schaefer, Goetz Lindenmaier
+ * Modified by:
+ * Created:
+ * CVS-ID: $Id$
+ * Copyright: (c) 1999-2003 Universität Karlsruhe
+ * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+ */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
+#include "firm_common.h"
+#include "irflag_t.h"
-/* 0 - don't do this optimization
- 1 - lets see, if there is a better graph */
-int opt_cse = 1;
-int opt_constant_folding = 1;
-int opt_dead_node_elimination = 1;
-int optimized = 1;
+/* DISABLE - don't do this optimization
+ ENABLE - lets see, if there is a better graph */
+#define ENABLE(a) a
+#define DISABLE(a) 0
+
+optimization_state_t libFIRM_opt =
+ ENABLE(OPT_OPTIMIZED) |
+ ENABLE(OPT_CSE) |
+ DISABLE(OPT_GLOBAL_CSE) |
+ ENABLE(OPT_CONSTANT_FOLDING) |
+ ENABLE(OPT_UNREACHABLE_CODE) |
+ ENABLE(OPT_CONTROL_FLOW_STRAIGHTENING) |
+ ENABLE(OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION) |
+ ENABLE(OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION) |
+ ENABLE(OPT_CRITICAL_EDGES) |
+ ENABLE(OPT_DEAD_NODE_ELIMINATION) |
+ ENABLE(OPT_DEAD_METHOD_ELIMINATION) |
+ ENABLE(OPT_REASSOCIATION) |
+ ENABLE(OPT_INLINE) |
+ ENABLE(OPT_DYN_METH_DISPATCH) |
+ ENABLE(OPT_NORMALIZE) |
+ ENABLE(OPT_TAIL_RECURSION) |
+ ENABLE(OPT_PRECISE_EXC_CONTEXT) |
+ 0;
/* set the flags with set_flagname, get the flag with get_flagname */
+void set_opt_cse (int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_CSE;
+ else
+ libFIRM_opt &= ~OPT_CSE;
+}
+
+void set_opt_global_cse(int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_GLOBAL_CSE;
+ else
+ libFIRM_opt &= ~OPT_GLOBAL_CSE;
+}
-inline void
-set_opt_cse (int value)
+void
+set_opt_constant_folding(int value)
{
- opt_cse = value;
+ if (value)
+ libFIRM_opt |= OPT_CONSTANT_FOLDING;
+ else
+ libFIRM_opt &= ~OPT_CONSTANT_FOLDING;
}
-inline int
-get_opt_cse (void)
+void
+set_opt_unreachable_code(int value)
{
- return opt_cse;
+ if (value)
+ libFIRM_opt |= OPT_UNREACHABLE_CODE;
+ else
+ libFIRM_opt &= ~OPT_UNREACHABLE_CODE;
}
-inline void
-set_opt_constant_folding (int value)
+void set_opt_control_flow(int value)
{
- opt_constant_folding=value;
+ set_opt_control_flow_straightening(value);
+ set_opt_control_flow_weak_simplification(value);
+ set_opt_control_flow_strong_simplification(value);
+ set_opt_critical_edges(value);
}
-inline int
-get_opt_constant_folding (void)
+/* Performs Straightening */
+void set_opt_control_flow_straightening(int value)
{
- return opt_constant_folding;
+ if (value)
+ libFIRM_opt |= OPT_CONTROL_FLOW_STRAIGHTENING;
+ else
+ libFIRM_opt &= ~OPT_CONTROL_FLOW_STRAIGHTENING;
}
-inline void
-set_opt_dead_node_elimination (int value)
+/* Performs if simplifications in local optimizations. */
+void set_opt_control_flow_weak_simplification(int value)
{
- opt_dead_node_elimination = value;
+ if (value)
+ libFIRM_opt |= OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
+ else
+ libFIRM_opt &= ~OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
}
-inline int
-get_opt_dead_node_elimination (void)
+/* Performs strong if and loop simplification (in optimize_cf). */
+void set_opt_control_flow_strong_simplification(int value)
{
- return opt_dead_node_elimination;
+ if (value)
+ libFIRM_opt |= OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION;
+ else
+ libFIRM_opt &= ~OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION;
+}
+
+void set_opt_critical_edges(int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_CRITICAL_EDGES;
+ else
+ libFIRM_opt &= ~OPT_CRITICAL_EDGES;
+}
+
+void set_opt_reassociation(int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_REASSOCIATION;
+ else
+ libFIRM_opt &= ~OPT_REASSOCIATION;
+}
+
+void set_opt_dead_node_elimination(int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_DEAD_NODE_ELIMINATION;
+ else
+ libFIRM_opt &= ~OPT_DEAD_NODE_ELIMINATION;
+}
+
+void set_opt_dead_method_elimination (int value) {
+ if (value)
+ libFIRM_opt |= OPT_DEAD_METHOD_ELIMINATION;
+ else
+ libFIRM_opt &= ~OPT_DEAD_METHOD_ELIMINATION;
+}
+
+void set_opt_dead_method_elimination_verbose (int value) {
+ if (value)
+ libFIRM_opt |= OPT_DEAD_METHOD_ELIMINATION_VERBOSE;
+ else
+ libFIRM_opt &= ~OPT_DEAD_METHOD_ELIMINATION_VERBOSE;
+}
+
+void set_optimize(int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_OPTIMIZED;
+ else
+ libFIRM_opt &= ~OPT_OPTIMIZED;
+}
+
+int get_optimize(void)
+{
+ return get_opt_optimize();
+}
+
+/* Enable/Disables inlining. */
+void set_opt_inline(int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_INLINE;
+ else
+ libFIRM_opt &= ~OPT_INLINE;
+}
+
+/* Enable/Disable optimization of dynamic method dispatch */
+void set_opt_dyn_meth_dispatch (int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_DYN_METH_DISPATCH;
+ else
+ libFIRM_opt &= ~OPT_DYN_METH_DISPATCH;
+}
+
+/* Enable/Disable normalizations of the firm representation. */
+void set_opt_normalize(int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_NORMALIZE;
+ else
+ libFIRM_opt &= ~OPT_NORMALIZE;
+}
+
+/* Enable/Disable optimization of tail-recursion calls. */
+void set_opt_tail_recursion(int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_TAIL_RECURSION;
+ else
+ libFIRM_opt &= ~OPT_TAIL_RECURSION;
+}
+
+/* Enable/Disable precise exception context. */
+void set_opt_precise_exc_context(int value)
+{
+#if PRECISE_EXC_CONTEXT
+ if (value)
+ libFIRM_opt |= OPT_PRECISE_EXC_CONTEXT;
+ else
+ libFIRM_opt &= ~OPT_PRECISE_EXC_CONTEXT;
+#endif
}
-inline void
-set_optimize (int value)
+/* Save the current optimization state. */
+void save_optimization_state(optimization_state_t *state)
{
- optimized = value;
+ *state = libFIRM_opt;
}
-inline int
-get_optimize (void)
+/* Restore the current optimization state. */
+void restore_optimization_state(const optimization_state_t *state)
{
- return optimized;
+ libFIRM_opt = *state;
}