diff options
Diffstat (limited to 'gcc/config/arm/arm.c')
| -rw-r--r-- | gcc/config/arm/arm.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index d7108a38ec0..be7bb060bed 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -240,6 +240,7 @@ static rtx arm_trampoline_adjust_address (rtx); static rtx arm_pic_static_addr (rtx orig, rtx reg); static bool cortex_a9_sched_adjust_cost (rtx, rtx, rtx, int *); static bool xscale_sched_adjust_cost (rtx, rtx, rtx, int *); +static bool fa726te_sched_adjust_cost (rtx, rtx, rtx, int *); static enum machine_mode arm_preferred_simd_mode (enum machine_mode); static bool arm_class_likely_spilled_p (reg_class_t); static bool arm_vector_alignment_reachable (const_tree type, bool is_packed); @@ -886,6 +887,14 @@ const struct tune_params arm_cortex_a9_tune = ARM_PREFETCH_BENEFICIAL(4,32,32) }; +const struct tune_params arm_fa726te_tune = +{ + arm_9e_rtx_costs, + fa726te_sched_adjust_cost, + 1, + ARM_PREFETCH_NOT_BENEFICIAL +}; + /* Not all of these give usefully different compilation alternatives, but there is no simple way of generalizing them. */ @@ -7996,6 +8005,36 @@ cortex_a9_sched_adjust_cost (rtx insn, rtx link, rtx dep, int * cost) return true; } +/* Adjust cost hook for FA726TE. */ +static bool +fa726te_sched_adjust_cost (rtx insn, rtx link, rtx dep, int * cost) +{ + /* For FA726TE, true dependency on CPSR (i.e. set cond followed by predicated) + have penalty of 3. */ + if (REG_NOTE_KIND (link) == REG_DEP_TRUE + && recog_memoized (insn) >= 0 + && recog_memoized (dep) >= 0 + && get_attr_conds (dep) == CONDS_SET) + { + /* Use of carry (e.g. 64-bit arithmetic) in ALU: 3-cycle latency. */ + if (get_attr_conds (insn) == CONDS_USE + && get_attr_type (insn) != TYPE_BRANCH) + { + *cost = 3; + return false; + } + + if (GET_CODE (PATTERN (insn)) == COND_EXEC + || get_attr_conds (insn) == CONDS_USE) + { + *cost = 0; + return false; + } + } + + return true; +} + /* This function implements the target macro TARGET_SCHED_ADJUST_COST. It corrects the value of COST based on the relationship between INSN and DEP through the dependence LINK. It returns the new @@ -22840,6 +22879,7 @@ arm_issue_rate (void) case cortexa5: case cortexa8: case cortexa9: + case fa726te: return 2; default: |