loop-invariant.c: Use rtx_insn in various places

gcc/
	* loop-invariant.c (struct use): Strengthen field "insn" from rtx
	to rtx_insn *.
	(struct invariant): Likewise.
	(hash_invariant_expr_1): Likewise for param "insn".
	(invariant_expr_equal_p): Likewise for param "insn1", "insn2".
	(find_exits): Likewise for local "insn".
	(create_new_invariant): Likewise for param "insn".
	(check_dependencies): Likewise.
	(find_invariant_insn): Likewise.
	(record_uses): Likewise.
	(find_invariants_insn): Likewise.
	(find_invariants_bb): Likewise for local "insn".
	(get_pressure_class_and_nregs): Likewise for param "insn".
	(calculate_loop_reg_pressure): Likewise for local "insn".

From-SVN: r214343

gcc/ChangeLog

 2014-08-22  David Malcolm  <dmalcolm@redhat.com>
 
+	* loop-invariant.c (struct use): Strengthen field "insn" from rtx
+	to rtx_insn *.
+	(struct invariant): Likewise.
+	(hash_invariant_expr_1): Likewise for param "insn".
+	(invariant_expr_equal_p): Likewise for param "insn1", "insn2".
+	(find_exits): Likewise for local "insn".
+	(create_new_invariant): Likewise for param "insn".
+	(check_dependencies): Likewise.
+	(find_invariant_insn): Likewise.
+	(record_uses): Likewise.
+	(find_invariants_insn): Likewise.
+	(find_invariants_bb): Likewise for local "insn".
+	(get_pressure_class_and_nregs): Likewise for param "insn".
+	(calculate_loop_reg_pressure): Likewise for local "insn".
+
+2014-08-22  David Malcolm  <dmalcolm@redhat.com>
+
 	* loop-doloop.c (doloop_valid_p): Strengthen local "insn" from rtx
 	to rtx_insn *.
 	(add_test): Likewise for locals "seq", "jump".

gcc/loop-invariant.c

@@ -78,7 +78,7 @@ struct loop_data
 struct use
 {
   rtx *pos;			/* Position of the use.  */
-  rtx insn;			/* The insn in that the use occurs.  */
+  rtx_insn *insn;		/* The insn in that the use occurs.  */
   unsigned addr_use_p;		/* Whether the use occurs in an address.  */
   struct use *next;		/* Next use in the list.  */
 };
@@ -119,7 +119,7 @@ struct invariant
   struct def *def;
 
   /* The insn in that it is defined.  */
-  rtx insn;
+  rtx_insn *insn;
 
   /* Whether it is always executed.  */
   bool always_executed;
@@ -289,7 +289,7 @@ invariant_for_use (df_ref use)
 /* Computes hash value for invariant expression X in INSN.  */
 
 static hashval_t
-hash_invariant_expr_1 (rtx insn, rtx x)
+hash_invariant_expr_1 (rtx_insn *insn, rtx x)
 {
   enum rtx_code code = GET_CODE (x);
   int i, j;
@@ -343,7 +343,7 @@ hash_invariant_expr_1 (rtx insn, rtx x)
    and INSN2 have always the same value.  */
 
 static bool
-invariant_expr_equal_p (rtx insn1, rtx e1, rtx insn2, rtx e2)
+invariant_expr_equal_p (rtx_insn *insn1, rtx e1, rtx_insn *insn2, rtx e2)
 {
   enum rtx_code code = GET_CODE (e1);
   int i, j;
@@ -578,7 +578,7 @@ find_exits (struct loop *loop, basic_block *body,
   edge e;
   struct loop *outermost_exit = loop, *aexit;
   bool has_call = false;
-  rtx insn;
+  rtx_insn *insn;
 
   for (i = 0; i < loop->num_nodes; i++)
     {
@@ -689,7 +689,7 @@ find_defs (struct loop *loop)
    is returned.  */
 
 static struct invariant *
-create_new_invariant (struct def *def, rtx insn, bitmap depends_on,
+create_new_invariant (struct def *def, rtx_insn *insn, bitmap depends_on,
 		      bool always_executed)
 {
   struct invariant *inv = XNEW (struct invariant);
@@ -833,7 +833,7 @@ check_dependency (basic_block bb, df_ref use, bitmap depends_on)
    loop invariants, false otherwise.  */
 
 static bool
-check_dependencies (rtx insn, bitmap depends_on)
+check_dependencies (rtx_insn *insn, bitmap depends_on)
 {
   struct df_insn_info *insn_info = DF_INSN_INFO_GET (insn);
   df_ref use;
@@ -887,7 +887,7 @@ pre_check_invariant_p (bool simple, rtx dest)
    unless the program ends due to a function call.  */
 
 static void
-find_invariant_insn (rtx insn, bool always_reached, bool always_executed)
+find_invariant_insn (rtx_insn *insn, bool always_reached, bool always_executed)
 {
   df_ref ref;
   struct def *def;
@@ -950,7 +950,7 @@ find_invariant_insn (rtx insn, bool always_reached, bool always_executed)
 /* Record registers used in INSN that have a unique invariant definition.  */
 
 static void
-record_uses (rtx insn)
+record_uses (rtx_insn *insn)
 {
   struct df_insn_info *insn_info = DF_INSN_INFO_GET (insn);
   df_ref use;
@@ -975,7 +975,7 @@ record_uses (rtx insn)
    unless the program ends due to a function call.  */
 
 static void
-find_invariants_insn (rtx insn, bool always_reached, bool always_executed)
+find_invariants_insn (rtx_insn *insn, bool always_reached, bool always_executed)
 {
   find_invariant_insn (insn, always_reached, always_executed);
   record_uses (insn);
@@ -989,7 +989,7 @@ find_invariants_insn (rtx insn, bool always_reached, bool always_executed)
 static void
 find_invariants_bb (basic_block bb, bool always_reached, bool always_executed)
 {
-  rtx insn;
+  rtx_insn *insn;
 
   FOR_BB_INSNS (bb, insn)
     {
@@ -1066,7 +1066,7 @@ free_use_list (struct use *use)
 /* Return pressure class and number of hard registers (through *NREGS)
    for destination of INSN. */
 static enum reg_class
-get_pressure_class_and_nregs (rtx insn, int *nregs)
+get_pressure_class_and_nregs (rtx_insn *insn, int *nregs)
 {
   rtx reg;
   enum reg_class pressure_class;
@@ -1878,7 +1878,8 @@ calculate_loop_reg_pressure (void)
   unsigned int j;
   bitmap_iterator bi;
   basic_block bb;
-  rtx insn, link;
+  rtx_insn *insn;
+  rtx link;
   struct loop *loop, *parent;
 
   FOR_EACH_LOOP (loop, 0)