rs6000.h (EXTRA_CONSTRAINT): Add 'a' for indexed or indirect address operand.

        * config/rs6000/rs6000.h (EXTRA_CONSTRAINT): Add 'a' for indexed
        or indirect address operand.
        (EXTRA_ADDRESS_CONSTRAINT): New.
        * config/rs6000/rs6000.md (prefetch): Change constraint "p" to "a".

From-SVN: r103056

gcc/ChangeLog

+2005-08-13  David Edelsohn  <edelsohn@gnu.org>
+
+	* config/rs6000/rs6000.h (EXTRA_CONSTRAINT): Add 'a' for indexed
+	or indirect address operand.
+	(EXTRA_ADDRESS_CONSTRAINT): New.
+	* config/rs6000/rs6000.md (prefetch): Change constraint "p" to "a".
+
 2005-08-13  Sebastian Pop  <pop@cri.ensmp.fr>
 
 	PR tree-optimization/22236

gcc/config/rs6000/rs6000.h

@@ -1111,6 +1111,7 @@ enum reg_class
    'W' is a vector constant that can be easily generated (no mem refs).
    'Y' is an indexed or word-aligned displacement memory operand.
    'Z' is an indexed or indirect memory operand.
+   'a'  is an indexed or indirect address operand.
    't' is for AND masks that can be performed by two rldic{l,r} insns.  */
 
 #define EXTRA_CONSTRAINT(OP, C)						\
@@ -1127,6 +1128,7 @@ enum reg_class
    : (C) == 'W' ? (easy_vector_constant (OP, GET_MODE (OP)))		\
    : (C) == 'Y' ? (word_offset_memref_operand (OP, GET_MODE (OP)))      \
    : (C) == 'Z' ? (indexed_or_indirect_operand (OP, GET_MODE (OP)))	\
+   : (C) == 'a' ? (indexed_or_indirect_address (OP, GET_MODE (OP)))	\
    : 0)
 
 /* Define which constraints are memory constraints.  Tell reload
@@ -1136,6 +1138,12 @@ enum reg_class
 #define EXTRA_MEMORY_CONSTRAINT(C, STR)				\
   ((C) == 'Q' || (C) == 'Y' || (C) == 'Z')
 
+/* Define which constraints should be treated like address constraints
+   by the reload pass.  */
+
+#define EXTRA_ADDRESS_CONSTRAINT(C, STR)			\
+  ((C) == 'a')
+
 /* Given an rtx X being reloaded into a reg required to be
    in class CLASS, return the class of reg to actually use.
    In general this is just CLASS; but on some machines

gcc/config/rs6000/rs6000.md

@@ -14016,7 +14016,7 @@
 }")
 
 (define_insn "prefetch"
-  [(prefetch (match_operand 0 "indexed_or_indirect_address" "p")
+  [(prefetch (match_operand 0 "indexed_or_indirect_address" "a")
 	     (match_operand:SI 1 "const_int_operand" "n")
 	     (match_operand:SI 2 "const_int_operand" "n"))]
   "TARGET_POWERPC"