ia64.md (*ptr_extend_plus_1, [...]): New.

        * config/ia64/ia64.md (*ptr_extend_plus_1, *ptr_extend_plus_2): New.
        * config/ia64/ia64.c (basereg_operand): New.
        * config/ia64/ia64-protos.h (basereg_operand): Declare.
        * config/ia64/ia64.h (PREDICATE_CODES): Add basereg_operand.

From-SVN: r51564

gcc/ChangeLog

+2002-03-29  Steve Ellcey  <sje@cup.hp.com>
+
+	* config/ia64/ia64.md (*ptr_extend_plus_1, *ptr_extend_plus_2): New.
+	* config/ia64/ia64.c (basereg_operand): New.
+	* config/ia64/ia64-protos.h (basereg_operand): Declare.
+	* config/ia64/ia64.h (PREDICATE_CODES): Add basereg_operand.
+
 2002-03-29  Hans-Peter Nilsson  <hp@bitrange.com>
 
 	* config/mmix/mmix.c (mmix_target_asm_function_prologue): Correct

gcc/config/ia64/ia64-protos.h

@@ -66,6 +66,7 @@ extern int ar_pfs_reg_operand PARAMS((rtx, enum machine_mode));
 extern int general_tfmode_operand PARAMS((rtx, enum machine_mode));
 extern int destination_tfmode_operand PARAMS((rtx, enum machine_mode));
 extern int tfreg_or_fp01_operand PARAMS((rtx, enum machine_mode));
+extern int basereg_operand PARAMS((rtx, enum machine_mode));
 
 extern int ia64_move_ok PARAMS((rtx, rtx));
 extern int ia64_depz_field_mask PARAMS((rtx, rtx));

gcc/config/ia64/ia64.c

@@ -865,6 +865,21 @@ tfreg_or_fp01_operand (op, mode)
   return fr_reg_or_fp01_operand (op, mode);
 }
 
+/* Return 1 if OP is valid as a base register in a reg + offset address.  */
+
+int
+basereg_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  /* ??? Should I copy the flag_omit_frame_pointer and cse_not_expected
+     checks from pa.c basereg_operand as well?  Seems to be OK without them
+     in test runs.  */
+
+  return (register_operand (op, mode) &&
+	  REG_POINTER ((GET_CODE (op) == SUBREG) ? SUBREG_REG (op) : op));
+}
+
 /* Return 1 if the operands of a move are ok.  */
 
 int

gcc/config/ia64/ia64.h

@@ -2351,7 +2351,8 @@ do {									\
 { "ar_pfs_reg_operand", {REG}},						\
 { "general_tfmode_operand", {SUBREG, REG, CONST_DOUBLE, MEM}},		\
 { "destination_tfmode_operand", {SUBREG, REG, MEM}},			\
-{ "tfreg_or_fp01_operand", {REG, CONST_DOUBLE}},
+{ "tfreg_or_fp01_operand", {REG, CONST_DOUBLE}},			\
+{ "basereg_operand", {SUBREG, REG}},
 
 /* An alias for a machine mode name.  This is the machine mode that elements of
    a jump-table should have.  */

gcc/config/ia64/ia64.md

@@ -5304,6 +5304,29 @@
   [(set_attr "itanium_class" "ialu")])
 
 ;;
+;; Optimizations for ptr_extend
+
+(define_insn "*ptr_extend_plus_1"
+  [(set (match_operand:DI 0 "gr_register_operand" "=r")
+        (unspec:DI
+         [(plus:SI (match_operand:SI 1 "basereg_operand" "r")
+                   (match_operand:SI 2 "gr_reg_or_14bit_operand" "rI"))]
+         24))]
+  ""
+  "addp4 %0 = %2, %1"
+  [(set_attr "itanium_class" "ialu")])
+
+(define_insn "*ptr_extend_plus_2"
+  [(set (match_operand:DI 0 "gr_register_operand" "=r")
+        (unspec:DI
+         [(plus:SI (match_operand:SI 1 "gr_register_operand" "r")
+                   (match_operand:SI 2 "basereg_operand" "r"))]
+         24))]
+  ""
+  "addp4 %0 = %1, %2"
+  [(set_attr "itanium_class" "ialu")])
+
+;;
 ;; As USE insns aren't meaningful after reload, this is used instead
 ;; to prevent deleting instructions setting registers for EH handling
 (define_insn "prologue_use"