* loop.c (emit_iv_add_mult): Use single_set to examine new insn.

From-SVN: r38764

* loop.c (emit_iv_add_mult): Use single_set to examine new insn.
From-SVN: r38764
30a1181a · Michael Hayes · Michael Hayes · cabf3891 · 30a1181a · 30a1181a
Commit 30a1181a authored Jan 07, 2001 by Michael Hayes Committed by Michael Hayes Jan 07, 2001
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gcc/ChangeLog
+4 -0

gcc/loop.c
+6 -3

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2001-01-07  Michael Hayes  <mhayes@redhat.com>
+
+	* loop.c (emit_iv_add_mult): Use single_set to examine new insn.
+
 2001-01-07  Richard Henderson  <rth@redhat.com>

 	* sched-rgn.c (is_cfg_nonregular): Fix thinko's last change.

--- a/gcc/loop.c
+++ b/gcc/loop.c
@@ -6904,9 +6904,12 @@ emit_iv_add_mult (b, m, a, reg, insert_before)
 	    record_base_value (REGNO (SET_DEST (set)), SET_SRC (set), 0);
 	}
    }
-  else if (GET_CODE (seq) == SET
-	   && GET_CODE (SET_DEST (seq)) == REG)
-    record_base_value (REGNO (SET_DEST (seq)), SET_SRC (seq), 0);
+  else 
+    {
+      rtx set = single_set (seq);
+      if (set && GET_CODE (SET_DEST (set)) == REG)
+	record_base_value (REGNO (SET_DEST (set)), SET_SRC (set), 0);
+    }
 }

 /* Similar to emit_iv_add_mult, but compute cost rather than emitting