(record_jump_cond): Rehash OP1 if OP0's insert_regs returns nonzero.

From-SVN: r5631

diff --git a/gcc/cse.c b/gcc/cse.c
index beb5a769166c2ac242d168c8c5562c710dc0cc1e..4fbcb287b01604a5a9b09edc4c72932af79cd427 100644 (file)
--- a/gcc/cse.c
+++ b/gcc/cse.c
@@ -5621,6 +5621,12 @@ record_jump_cond (code, mode, op0, op1, reversed_nonequality)
            {
              rehash_using_reg (op0);
              op0_hash_code = HASH (op0, mode);
+
+             /* If OP0 is contained in OP1, this changes its hash code
+                as well.  Faster to rehash than to check, except
+                for the simple case of a constant.  */
+             if (! CONSTANT_P (op1))
+               op1_hash_code = HASH (op1,mode);
            }
 
          op0_elt = insert (op0, NULL_PTR, op0_hash_code, mode);