diff options
Diffstat (limited to 'gcc/config/bfin/bfin.c')
| -rw-r--r-- | gcc/config/bfin/bfin.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/gcc/config/bfin/bfin.c b/gcc/config/bfin/bfin.c index 18457f8f7b6..bd677f88bab 100644 --- a/gcc/config/bfin/bfin.c +++ b/gcc/config/bfin/bfin.c @@ -2438,7 +2438,7 @@ cbranch_predicted_taken_p (rtx insn) if (x) { - int pred_val = INTVAL (XEXP (x, 0)); + int pred_val = XINT (x, 0); return pred_val >= REG_BR_PROB_BASE / 2; } @@ -3366,6 +3366,22 @@ find_prev_insn_start (rtx insn) return insn; } +/* Implement TARGET_CAN_USE_DOLOOP_P. */ + +static bool +bfin_can_use_doloop_p (double_int, double_int iterations_max, + unsigned int, bool) +{ + /* Due to limitations in the hardware (an initial loop count of 0 + does not loop 2^32 times) we must avoid to generate a hardware + loops when we cannot rule out this case. */ + if (!flag_unsafe_loop_optimizations + && (iterations_max.high != 0 + || iterations_max.low >= 0xFFFFFFFF)) + return false; + return true; +} + /* Increment the counter for the number of loop instructions in the current function. */ @@ -5810,4 +5826,7 @@ bfin_conditional_register_usage (void) #undef TARGET_DELAY_VARTRACK #define TARGET_DELAY_VARTRACK true +#undef TARGET_CAN_USE_DOLOOP_P +#define TARGET_CAN_USE_DOLOOP_P bfin_can_use_doloop_p + struct gcc_target targetm = TARGET_INITIALIZER; |