diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index c88382e..4782e1d 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -11003,8 +11003,11 @@ simplify_shift_const_1 (enum rtx_code code, machine_mode result_mode, break; /* For ((int) (cstLL >> count)) >> cst2 just give up. Queuing up outer sign extension (often left and right shift) is - hardly more efficient than the original. See PR70429. */ - if (code == ASHIFTRT && int_mode != int_result_mode) + hardly more efficient than the original. See PR70429. + Similarly punt for rotates with different modes. + See PR97386. */ + if ((code == ASHIFTRT || code == ROTATE) + && int_mode != int_result_mode) break; rtx count_rtx = gen_int_shift_amount (int_result_mode, count); |