2005-04-05 Andrew MacLeod <amacleod@redhat.com>

[pf3gnuchains/gcc-fork.git] / gcc / tree.h

diff --git a/gcc/tree.h b/gcc/tree.h
index d09034c..7c61e8f 100644 (file)
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -1348,6 +1348,21 @@ struct tree_exp GTY(())
 struct ptr_info_def;
 #endif
 
+
+
+/* Immediate use linking structure. THis structure is used for maintaining
+   a doubly linked list of uses of an SSA_NAME.  */
+typedef struct ssa_imm_use_d GTY(())
+{
+  struct ssa_imm_use_d* GTY((skip(""))) prev;
+  struct ssa_imm_use_d* GTY((skip(""))) next;
+  tree GTY((skip(""))) stmt;
+  tree *GTY((skip(""))) use;
+} ssa_imm_use_t;
+
+/* Return the immediate_use information for an SSA_NAME. */
+#define SSA_NAME_IMM_USE_NODE(NODE) SSA_NAME_CHECK (NODE)->ssa_name.imm_uses
+
 struct tree_ssa_name GTY(())
 {
   struct tree_common common;
@@ -1370,9 +1385,19 @@ struct tree_ssa_name GTY(())
 
   /* Auxiliary information stored with the ssa name.  */
   PTR GTY((skip)) aux;
+
+  /* Immediate uses list for this SSA_NAME.  */
+  struct ssa_imm_use_d imm_uses;
 };
 \f
 /* In a PHI_NODE node.  */
+
+/* These 2 macros should be considered off limits for use by developers.  If 
+   you wish to access the use or def fields of a PHI_NODE in the SSA 
+   optimizers, use the accessor macros found in tree-ssa-operands.h.  
+   These two macros are to be used only by those accessor macros, and other 
+   select places where we *absolutly* must take the address of the tree.  */
+
 #define PHI_RESULT_TREE(NODE)          PHI_NODE_CHECK (NODE)->phi.result
 #define PHI_ARG_DEF_TREE(NODE, I)      PHI_NODE_ELT_CHECK (NODE, I).def
 
@@ -1390,12 +1415,13 @@ struct tree_ssa_name GTY(())
 #define PHI_ARG_EDGE(NODE, I)          (EDGE_PRED (PHI_BB ((NODE)), (I)))
 #define PHI_ARG_NONZERO(NODE, I)       PHI_NODE_ELT_CHECK (NODE, I).nonzero
 #define PHI_BB(NODE)                   PHI_NODE_CHECK (NODE)->phi.bb
-#define PHI_DF(NODE)                   PHI_NODE_CHECK (NODE)->phi.df
+#define PHI_ARG_IMM_USE_NODE(NODE, I)  PHI_NODE_ELT_CHECK (NODE, I).imm_use
 
 struct edge_def;
 
 struct phi_arg_d GTY(())
 {
+  struct ssa_imm_use_d imm_use;        /* imm_use MUST be first element in struct.  */
   tree def;
   bool nonzero;
 };
@@ -1414,9 +1440,6 @@ struct tree_phi_node GTY(())
   /* Basic block to that the phi node belongs.  */
   struct basic_block_def *bb;
 
-  /* Dataflow information.  */
-  struct dataflow_d *df;
-
   struct phi_arg_d GTY ((length ("((tree)&%h)->phi.num_args"))) a[1];
 };
 \f
@@ -3895,6 +3918,7 @@ enum tree_dump_index
 #define TDF_TREE       (1 << 9)        /* is a tree dump */
 #define TDF_RTL                (1 << 10)       /* is a RTL dump */
 #define TDF_IPA                (1 << 11)       /* is an IPA dump */
+#define TDF_STMTADDR   (1 << 12)       /* Address of stmt.  */
 
 typedef struct dump_info *dump_info_p;