diff options
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 02f9e2b4c36..329a0ff3839 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -3816,7 +3816,9 @@ simplify_relational_operation_1 (enum rtx_code code, enum machine_mode mode, /* Canonicalize (LTU/GEU (PLUS a b) b) as (LTU/GEU (PLUS a b) a). */ if ((code == LTU || code == GEU) && GET_CODE (op0) == PLUS - && rtx_equal_p (op1, XEXP (op0, 1))) + && rtx_equal_p (op1, XEXP (op0, 1)) + /* Don't recurse "infinitely" for (LTU/GEU (PLUS b b) b). */ + && !rtx_equal_p (op1, XEXP (op0, 0))) return simplify_gen_relational (code, mode, cmp_mode, op0, XEXP (op0, 0)); if (op1 == const0_rtx) |