diff options
Diffstat (limited to 'gcc/lra-int.h')
| -rw-r--r-- | gcc/lra-int.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/gcc/lra-int.h b/gcc/lra-int.h index 1f89e06..ad42f48 100644 --- a/gcc/lra-int.h +++ b/gcc/lra-int.h @@ -252,6 +252,18 @@ typedef class lra_insn_recog_data *lra_insn_recog_data_t; for preventing LRA cycling in a bug case. */ #define LRA_MAX_ASSIGNMENT_ITERATION_NUMBER 30 +/* Maximum allowed number of tries to split hard reg live ranges after failure + in assignment of reload pseudos. Theoretical bound for the value is the + number of the insn reload pseudos plus the number of inheritance pseudos + generated from the reload pseudos. This bound can be achieved when all the + reload pseudos and the inheritance pseudos require hard reg splitting for + their assignment. This is extremely unlikely event. */ +#define LRA_MAX_FAILED_SPLITS 10 + +#if LRA_MAX_FAILED_SPLITS >= LRA_MAX_ASSIGNMENT_ITERATION_NUMBER +#error wrong LRA_MAX_FAILED_SPLITS value +#endif + /* The maximal number of inheritance/split passes in LRA. It should be more 1 in order to perform caller saves transformations and much less MAX_CONSTRAINT_ITERATION_NUMBER to prevent LRA to do as many @@ -392,7 +404,7 @@ extern int lra_assignment_iter; extern int lra_assignment_iter_after_spill; extern void lra_setup_reg_renumber (int, int, bool); extern bool lra_assign (bool &); -extern bool lra_split_hard_reg_for (void); +extern bool lra_split_hard_reg_for (bool fail_p); /* lra-coalesce.cc: */ |