cris.h (TARGET_HAS_SWAP): Defined to describe availability of swap instruction.

	* config/cris/cris.h (TARGET_HAS_SWAP): Defined to describe
	availability of swap instruction.
	* config/cris/cris.md (bswapsi2): Implement using swap instruction.

From-SVN: r128043

gcc/ChangeLog

+2007-09-03  Jesper Nilsson  <jesper.nilsson@axis.com>
+
+	* config/cris/cris.h (TARGET_HAS_SWAP): Defined to describe
+	availability of swap instruction.
+	* config/cris/cris.md (bswapsi2): Implement using swap instruction.
+
 2007-09-03  Revital Eres  <eres@il.ibm.com>
 
 	* doc/invoke.texi (-fmodulo-sched-allow-regmoves): Update

gcc/config/cris/cris.h

@@ -279,6 +279,7 @@ extern int target_flags;
 
 #define TARGET_HAS_MUL_INSNS (cris_cpu_version >= CRIS_CPU_NG)
 #define TARGET_HAS_LZ (cris_cpu_version >= CRIS_CPU_ETRAX4)
+#define TARGET_HAS_SWAP (cris_cpu_version >= CRIS_CPU_SVINTO)
 
 #define CRIS_SUBTARGET_HANDLE_OPTION(x, y, z)
 

gcc/config/cris/cris.md

@@ -2671,6 +2671,13 @@
   "lz %1,%0"
   [(set_attr "slottable" "yes")])
 
+(define_insn "bswapsi2"
+  [(set (match_operand:SI 0 "register_operand" "=r")
+        (bswap:SI (match_operand:SI 1 "register_operand" "0")))]
+  "TARGET_HAS_SWAP"
+  "swapwb %0"
+  [(set_attr "slottable" "yes")])
+
 ;; Bound-insn.  Defined to be the same as an unsigned minimum, which is an
 ;; operation supported by gcc.  Used in casesi, but used now and then in
 ;; normal code too.