/* This array records the insn_code of insns to perform block moves. */
extern enum insn_code movstr_optab[NUM_MACHINE_MODES];
+/* This array records the insn_code of insns to perform block clears. */
+extern enum insn_code clrstr_optab[NUM_MACHINE_MODES];
+
/* Define functions given in optabs.c. */
/* Expand a binary operation given optab and rtx operands. */
extern void use_regs PROTO((rtx*, int, int));
/* Write zeros through the storage of OBJECT.
- If OBJECT has BLKmode, SIZE is its length in bytes. */
-extern void clear_storage PROTO((rtx, rtx));
+ If OBJECT has BLKmode, SIZE is its length in bytes and ALIGN is its
+ alignment.
+extern void clear_storage PROTO((rtx, rtx, int));
/* Emit insns to set X from Y. */
extern rtx emit_move_insn PROTO((rtx, rtx));