diff options
Diffstat (limited to 'gcc/calls.c')
| -rw-r--r-- | gcc/calls.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/gcc/calls.c b/gcc/calls.c index 657439a..2d68f75 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -2326,7 +2326,7 @@ expand_call (tree exp, rtx target, int ignore) int save_pending_stack_adjust = 0; int save_stack_pointer_delta = 0; rtx insns; - rtx before_call, next_arg_reg; + rtx before_call, next_arg_reg, after_args; if (pass == 0) { @@ -2756,6 +2756,7 @@ expand_call (tree exp, rtx target, int ignore) use_reg (&call_fusage, struct_value); } + after_args = get_last_insn (); funexp = prepare_call_address (funexp, static_chain_value, &call_fusage, reg_parm_seen, pass == 0); @@ -2790,6 +2791,13 @@ expand_call (tree exp, rtx target, int ignore) next_arg_reg, valreg, old_inhibit_defer_pop, call_fusage, flags, & args_so_far); + /* If the call setup or the call itself overlaps with anything + of the argument setup we probably clobbered our call address. + In that case we can't do sibcalls. */ + if (pass == 0 + && check_sibcall_argument_overlap (after_args, 0, 0)) + sibcall_failure = 1; + /* If a non-BLKmode value is returned at the most significant end of a register, shift the register right by the appropriate amount and update VALREG accordingly. BLKmode values are handled by the |