diff options
Diffstat (limited to 'gcc/config/arm/arm.c')
| -rw-r--r-- | gcc/config/arm/arm.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 724f1ac..ec28f79 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -544,6 +544,9 @@ int arm_tune_xscale = 0; This typically means an ARM6 or ARM7 with MMU or MPU. */ int arm_tune_wbuf = 0; +/* Nonzero if tuning for Cortex-A9. */ +int arm_tune_cortex_a9 = 0; + /* Nonzero if generating Thumb instructions. */ int thumb_code = 0; @@ -1289,6 +1292,7 @@ arm_override_options (void) arm_tune_xscale = (tune_flags & FL_XSCALE) != 0; arm_arch_iwmmxt = (insn_flags & FL_IWMMXT) != 0; arm_arch_hwdiv = (insn_flags & FL_DIV) != 0; + arm_tune_cortex_a9 = (arm_tune == cortexa9) != 0; /* If we are not using the default (ARM mode) section anchor offset ranges, then set the correct ranges now. */ @@ -4913,7 +4917,15 @@ arm_rtx_costs_1 (rtx x, enum rtx_code code, enum rtx_code outer) || (GET_CODE (XEXP (x, 0)) == SUBREG && GET_CODE (SUBREG_REG (XEXP (x, 0))) == REG)) ? 0 : 8)); - return (1 + ((GET_CODE (XEXP (x, 0)) == REG + + extra_cost = 1; + /* Increase the cost of complex shifts because they aren't any faster, + and reduce dual issue opportunities. */ + if (arm_tune_cortex_a9 + && outer != SET && GET_CODE (XEXP (x, 1)) != CONST_INT) + extra_cost++; + + return (extra_cost + ((GET_CODE (XEXP (x, 0)) == REG || (GET_CODE (XEXP (x, 0)) == SUBREG && GET_CODE (SUBREG_REG (XEXP (x, 0))) == REG)) ? 0 : 4) @@ -5028,7 +5040,8 @@ arm_rtx_costs_1 (rtx x, enum rtx_code code, enum rtx_code outer) && ((INTVAL (XEXP (XEXP (x, 0), 1)) & (INTVAL (XEXP (XEXP (x, 0), 1)) - 1)) == 0))) && (REG_OR_SUBREG_REG (XEXP (XEXP (x, 0), 0))) - && ((REG_OR_SUBREG_REG (XEXP (XEXP (x, 0), 1))) + && ((REG_OR_SUBREG_REG (XEXP (XEXP (x, 0), 1)) + && !arm_tune_cortex_a9) || GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT)) ? 0 : 4)); @@ -19066,6 +19079,7 @@ arm_issue_rate (void) case cortexr4: case cortexr4f: case cortexa8: + case cortexa9: return 2; default: |