| Message ID | 1484861.cdItfTZVga@polaris |
|---|---|
| State | New |
| Headers | show |
Hi Eric, On 16/05/16 09:40, Eric Botcazou wrote: > Hi, > > -fstack-usage issues the "not supported by this target" warning on naked > functions because the prologue routines do an early return for them. > > Tested on arm-eabi, may I apply it on all active branches? > > > 2016-05-16 Eric Botcazou <ebotcazou@adacore.com> > > * config/arm/arm.c (arm_expand_prologue): Set the stack usage to 0 > for naked functions. > (thumb1_expand_prologue): Likewise. > Ok. Considering the use of current_function_static_stack_size in output_stack_usage this definitely looks sensible and safe. Thanks, Kyrill
Index: config/arm/arm.c =================================================================== --- config/arm/arm.c (revision 236264) +++ config/arm/arm.c (working copy) @@ -21467,7 +21467,11 @@ arm_expand_prologue (void) /* Naked functions don't have prologues. */ if (IS_NAKED (func_type)) - return; + { + if (flag_stack_usage_info) + current_function_static_stack_size = 0; + return; + } /* Make a copy of c_f_p_a_s as we may need to modify it locally. */ args_to_push = crtl->args.pretend_args_size; @@ -24721,7 +24725,11 @@ thumb1_expand_prologue (void) /* Naked functions don't have prologues. */ if (IS_NAKED (func_type)) - return; + { + if (flag_stack_usage_info) + current_function_static_stack_size = 0; + return; + } if (IS_INTERRUPT (func_type)) {