diff options
Diffstat (limited to 'gcc/reload1.c')
| -rw-r--r-- | gcc/reload1.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/reload1.c b/gcc/reload1.c index 64dc0be..b234a6a 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -673,6 +673,17 @@ reload (rtx first, int global) if (! call_used_regs[i] && ! fixed_regs[i] && ! LOCAL_REGNO (i)) regs_ever_live[i] = 1; +#ifdef NON_SAVING_SETJMP + /* A function that calls setjmp should save and restore all the + call-saved registers on a system where longjmp clobbers them. */ + if (NON_SAVING_SETJMP && current_function_calls_setjmp) + { + for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) + if (! call_used_regs[i]) + regs_ever_live[i] = 1; + } +#endif + /* Find all the pseudo registers that didn't get hard regs but do have known equivalent constants or memory slots. These include parameters (known equivalent to parameter slots) |