diff options
Diffstat (limited to 'gcc/regclass.c')
| -rw-r--r-- | gcc/regclass.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/regclass.c b/gcc/regclass.c index 964cd59b68e..3147ba55fb3 100644 --- a/gcc/regclass.c +++ b/gcc/regclass.c @@ -81,6 +81,9 @@ char call_used_regs[FIRST_PSEUDO_REGISTER]; HARD_REG_SET call_used_reg_set; +/* HARD_REG_SET of registers we want to avoid caller saving. */ +HARD_REG_SET losing_caller_save_reg_set; + /* Data for initializing the above. */ static char initial_call_used_regs[] = CALL_USED_REGISTERS; @@ -390,6 +393,8 @@ init_reg_sets_1 () SET_HARD_REG_BIT (call_used_reg_set, i); if (call_fixed_regs[i]) SET_HARD_REG_BIT (call_fixed_reg_set, i); + if (CLASS_LIKELY_SPILLED_P (REGNO_REG_CLASS (i))) + SET_HARD_REG_BIT (losing_caller_save_reg_set, i); } } |