[1/3] expr: Export clear_by_pieces()

Make clear_by_pieces() available to other parts of the compiler,
similar to store_by_pieces().

gcc/ChangeLog:

	* expr.cc (clear_by_pieces): Remove static from clear_by_pieces.
	* expr.h (clear_by_pieces): Add prototype for clear_by_pieces.

diff --git a/gcc/expr.cc b/gcc/expr.cc
index 9f66d47944596806b467bbcab9e0889e53a132ec..1baa39b98eba3cb1d9c76fdbecaa03ec85ef5066 100644 (file)
--- a/gcc/expr.cc
+++ b/gcc/expr.cc
@@ -85,7 +85,6 @@ static void emit_block_move_via_sized_loop (rtx, rtx, rtx, unsigned, unsigned);
 static void emit_block_move_via_oriented_loop (rtx, rtx, rtx, unsigned, unsigned);
 static rtx emit_block_cmp_via_loop (rtx, rtx, rtx, tree, rtx, bool,
                                    unsigned, unsigned);
-static void clear_by_pieces (rtx, unsigned HOST_WIDE_INT, unsigned int);
 static rtx_insn *compress_float_constant (rtx, rtx);
 static rtx get_subtarget (rtx);
 static rtx store_field (rtx, poly_int64, poly_int64, poly_uint64, poly_uint64,
@@ -1840,10 +1839,7 @@ store_by_pieces (rtx to, unsigned HOST_WIDE_INT len,
     return to;
 }
 
-/* Generate several move instructions to clear LEN bytes of block TO.  (A MEM
-   rtx with BLKmode).  ALIGN is maximum alignment we can assume.  */
-
-static void
+void
 clear_by_pieces (rtx to, unsigned HOST_WIDE_INT len, unsigned int align)
 {
   if (len == 0)

diff --git a/gcc/expr.h b/gcc/expr.h
index 64956f630297c3d124c9241834e5cbeacbe2863e..751815841083bcd7d22b4dff630b3764df066a4f 100644 (file)
--- a/gcc/expr.h
+++ b/gcc/expr.h
@@ -245,6 +245,11 @@ extern bool can_store_by_pieces (unsigned HOST_WIDE_INT,
 extern rtx store_by_pieces (rtx, unsigned HOST_WIDE_INT, by_pieces_constfn,
                            void *, unsigned int, bool, memop_ret);
 
+/* Generate several move instructions to clear LEN bytes of block TO.  (A MEM
+   rtx with BLKmode).  ALIGN is maximum alignment we can assume.  */
+
+extern void clear_by_pieces (rtx, unsigned HOST_WIDE_INT, unsigned int);
+
 /* If can_store_by_pieces passes for worst-case values near MAX_LEN, call
    store_by_pieces within conditionals so as to handle variable LEN efficiently,
    storing VAL, if non-NULL_RTX, or valc instead.  */