-/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-** All rights reserved.
-**
-** Authors: Christian Schaefer
-**
-** irflag --- optimization flags
-*/
-
-/* $Id$ */
+/*
+ * 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 "irflag.h"
#include "firm_common.h"
+#include "irflag_t.h"
+/* DISABLE - don't do this optimization
+ ENABLE - lets see, if there is a better graph */
+#define ENABLE(a) a
+#define DISABLE(a) 0
-/* 0 - don't do this optimization
- 1 - lets see, if there is a better graph */
-int optimized = 1; /* Turn off all optimizations */
-
-int opt_cse = 1; /* Hash the nodes */
-int opt_global_cse = 0; /* Don't use block predecessor for comparison */
-/* @@@ 0 solage code placement fehlt */
-int opt_constant_folding = 1; /* Evaluate operations */
-int opt_unreachable_code = 1; /* Bad node propagation */
-int opt_control_flow = 1; /* control flow optimizations. */
-int opt_dead_node_elimination = 1; /* Reclaim memory */
-int opt_reassociation = 1; /* Reassociate nodes */
-int opt_inline = 1; /* Do inlining transformation */
+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_REASSOCIATION) |
+ ENABLE(OPT_INLINE) |
+ ENABLE(OPT_DYN_METH_DISPATCH) |
+ ENABLE(OPT_NORMALIZE);
/* set the flags with set_flagname, get the flag with get_flagname */
-INLINE void
-set_opt_cse (int value)
+void set_opt_cse (int value)
{
- opt_cse = value;
+ if (value)
+ libFIRM_opt |= OPT_CSE;
+ else
+ libFIRM_opt &= ~OPT_CSE;
}
-INLINE int
-get_opt_cse (void)
+void set_opt_global_cse(int value)
{
- return opt_cse;
+ if (value)
+ libFIRM_opt |= OPT_GLOBAL_CSE;
+ else
+ libFIRM_opt &= ~OPT_GLOBAL_CSE;
}
-void set_opt_global_cse (int value)
+void
+set_opt_constant_folding(int value)
{
- opt_global_cse = value;
+ if (value)
+ libFIRM_opt |= OPT_CONSTANT_FOLDING;
+ else
+ libFIRM_opt &= ~OPT_CONSTANT_FOLDING;
}
-int get_opt_global_cse (void)
+void
+set_opt_unreachable_code(int value)
{
- return opt_global_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_unreachable_code(int value)
+/* Performs if simplifications in local optimizations. */
+void set_opt_control_flow_weak_simplification(int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
+ else
+ libFIRM_opt &= ~OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
+}
+
+/* Performs strong if and loop simplification (in optimize_cf). */
+void set_opt_control_flow_strong_simplification(int value)
+{
+ 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_optimize(int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_OPTIMIZED;
+ else
+ libFIRM_opt &= ~OPT_OPTIMIZED;
+}
+
+int get_optimize(void)
+{
+ return get_opt_optimize();
+}
+
+void set_opt_inline(int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_INLINE;
+ else
+ libFIRM_opt &= ~OPT_INLINE;
+}
+
+/** 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)
+{
+ if (value)
+ libFIRM_opt |= OPT_DYN_METH_DISPATCH;
+ else
+ libFIRM_opt &= ~OPT_DYN_METH_DISPATCH;
+}
+
+void set_opt_normalize(int value)
+{
+ if (value)
+ libFIRM_opt |= OPT_NORMALIZE;
+ else
+ libFIRM_opt &= ~OPT_NORMALIZE;
+}
+
+/* Save the current optimization state. */
+void save_optimization_state(optimization_state_t *state)
+{
+ *state = libFIRM_opt;
+}
+
+/* Restore the current optimization state. */
+void restore_optimization_state(const optimization_state_t *state)
+{
+ libFIRM_opt = *state;
+}
+
+/* repeat 'inline' methods here */
+
+# ifndef USE_GCC_INLINE
+
+/** Returns constant folding optimization setting. */
+int get_opt_cse(void) /* iropt.c */
{
- opt_unreachable_code = value;
+ return libFIRM_opt & OPT_CSE;
}
-INLINE int
-get_opt_unreachable_code(void)
+/** Returns constant subexpression elimination setting. */
+int get_opt_global_cse(void) /* irgopt.c iropt.c */
{
- return opt_unreachable_code;
+ return libFIRM_opt & OPT_GLOBAL_CSE;
}
-INLINE void set_opt_control_flow(int value) {
- opt_control_flow = value;
+/** Returns global constant subexpression elimination setting. */
+int get_opt_constant_folding(void) /* iropt.c */
+{
+ return libFIRM_opt & OPT_CONSTANT_FOLDING;
}
-INLINE int get_opt_control_flow(void) {
- return opt_control_flow;
+/** Returns unreachable code elimination setting. */
+int get_opt_unreachable_code(void) /* iropt.c */
+{
+ return libFIRM_opt & OPT_UNREACHABLE_CODE;
}
-INLINE void
-set_opt_reassociation(int value)
+/** Returns Straightening setting. */
+int get_opt_control_flow_straightening(void) /* iropt.c, irgopt.c */
{
- opt_reassociation = value;
+ return libFIRM_opt & OPT_CONTROL_FLOW_STRAIGHTENING;
}
-INLINE int
-get_opt_reassociation(void)
+/** Returns if simplifications in local optimizations setting. */
+int get_opt_control_flow_weak_simplification(void) /* iropt.c, irgopt.c */
{
- return opt_reassociation;
+ return libFIRM_opt & OPT_CONTROL_FLOW_WEAK_SIMPLIFICATION;
}
-INLINE void
-set_opt_dead_node_elimination (int value)
+/** Returns strong if and loop simplification setting */
+int get_opt_control_flow_strong_simplification(void) /* irgopt.c */
{
- opt_dead_node_elimination = value;
+ return libFIRM_opt & OPT_CONTROL_FLOW_STRONG_SIMPLIFICATION;
}
-INLINE int
-get_opt_dead_node_elimination (void)
+/** Returns whether critical edges are removed */
+int get_opt_critical_edges(void) /* irgopt.c */
{
- return opt_dead_node_elimination;
+ return libFIRM_opt & OPT_CRITICAL_EDGES;
}
-INLINE void
-set_optimize (int value)
+/** Returns reassociation setting. */
+int get_opt_reassociation(void) /* iropt.c */
{
- optimized = value;
+ return libFIRM_opt & OPT_REASSOCIATION;
}
-INLINE int
-get_optimize (void)
+/** Returns dead node elimination setting. */
+int get_opt_dead_node_elimination(void) /* irgopt.c */
{
- return optimized;
+ return libFIRM_opt & OPT_DEAD_NODE_ELIMINATION;
}
+/** Returns global optimization setting */
+int get_opt_optimize(void) /* iropt.c, irgopt.c */
+{
+ return libFIRM_opt & OPT_OPTIMIZED;
+}
-INLINE void set_opt_inline (int value) {
- opt_inline = value;
+/** Returns inlining setting. */ /* how appropriate */
+int get_opt_inline(void) /* irgopt.c */
+{
+ return libFIRM_opt & OPT_INLINE;
+}
+
+int get_opt_dyn_meth_dispatch(void) /* cgana.c */
+{
+ return libFIRM_opt & OPT_DYN_METH_DISPATCH;
}
-INLINE int get_opt_inline (void) {
- return opt_inline;
+int get_opt_normalize(void) /* irgopt.c, irnode.c, iropt.c */
+{
+ return libFIRM_opt & OPT_NORMALIZE;
}
+
+# endif /* not defined USE_GCC_INLINE */
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