+2006-11-22 Peter Bergner <bergner@vnet.ibm.com>
+
+ * config/rs6000/rs6000.c (get_store_dest): New.
+ (adjacent_mem_locations): Use get_store_dest() to get
+ the rtl of the store destination.
+
2006-11-22 Joseph Myers <joseph@codesourcery.com>
* config/rs6000/spe.md (SPE64): New mode macro.
static bool is_cracked_insn (rtx);
static bool is_branch_slot_insn (rtx);
static bool is_load_insn (rtx);
+static rtx get_store_dest (rtx pat);
static bool is_store_insn (rtx);
static bool set_to_load_agen (rtx,rtx);
static bool adjacent_mem_locations (rtx,rtx);
adjacent_mem_locations (rtx insn1, rtx insn2)
{
- rtx a = SET_DEST (PATTERN (insn1));
- rtx b = SET_DEST (PATTERN (insn2));
-
+ rtx a = get_store_dest (PATTERN (insn1));
+ rtx b = get_store_dest (PATTERN (insn2));
+
if ((GET_CODE (XEXP (a, 0)) == REG
|| (GET_CODE (XEXP (a, 0)) == PLUS
&& GET_CODE (XEXP (XEXP (a, 0), 1)) == CONST_INT))
return is_store_insn1 (PATTERN (insn));
}
+/* Return the dest of a store insn. */
+
+static rtx
+get_store_dest (rtx pat)
+{
+ gcc_assert (is_store_insn1 (pat));
+
+ if (GET_CODE (pat) == SET)
+ return SET_DEST (pat);
+ else if (GET_CODE (pat) == PARALLEL)
+ {
+ int i;
+
+ for (i = 0; i < XVECLEN (pat, 0); i++)
+ {
+ rtx inner_pat = XVECEXP (pat, 0, i);
+ if (GET_CODE (inner_pat) == SET
+ && is_mem_ref (SET_DEST (inner_pat)))
+ return inner_pat;
+ }
+ }
+ /* We shouldn't get here, because we should have either a simple
+ store insn or a store with update which are covered above. */
+ gcc_unreachable();
+}
+
/* Returns whether the dependence between INSN and NEXT is considered
costly by the given target. */