diff options
Diffstat (limited to 'gcc/hard-reg-set.h')
| -rw-r--r-- | gcc/hard-reg-set.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/hard-reg-set.h b/gcc/hard-reg-set.h index 10435beec34..c3a2305711f 100644 --- a/gcc/hard-reg-set.h +++ b/gcc/hard-reg-set.h @@ -431,6 +431,15 @@ extern HARD_REG_SET call_fixed_reg_set; extern char global_regs[FIRST_PSEUDO_REGISTER]; +/* Contains 1 for registers that are set or clobbered by calls. */ +/* ??? Ideally, this would be just call_used_regs plus global_regs, but + for someone's bright idea to have call_used_regs strictly include + fixed_regs. Which leaves us guessing as to the set of fixed_regs + that are actually preserved. We know for sure that those associated + with the local stack frame are safe, but scant others. */ + +extern HARD_REG_SET regs_invalidated_by_call; + #ifdef REG_ALLOC_ORDER /* Table of register numbers in the order in which to try to use them. */ |