PR c++/42844

[pf3gnuchains/gcc-fork.git] / gcc / reload1.c

diff --git a/gcc/reload1.c b/gcc/reload1.c
index 02fef2d..bd590cb 100644 (file)
--- a/gcc/reload1.c
+++ b/gcc/reload1.c
@@ -3557,7 +3557,10 @@ eliminate_regs_in_insn (rtx insn, int replace)
     {
       /* Restore the old body.  */
       for (i = 0; i < recog_data.n_operands; i++)
-       *recog_data.operand_loc[i] = orig_operand[i];
+       /* Restoring a top-level match_parallel would clobber the new_body
+          we installed in the insn.  */
+       if (recog_data.operand_loc[i] != &PATTERN (insn))
+         *recog_data.operand_loc[i] = orig_operand[i];
       for (i = 0; i < recog_data.n_dups; i++)
        *recog_data.dup_loc[i] = orig_operand[(int) recog_data.dup_num[i]];
     }