https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65791
Bug ID: 65791
Summary: Postpone expand_ifn_va_arg till after
optimize_va_list_gpr_fpr_size
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
After the fix for PR64950 - postpone expanding va_arg till pass_stdarg, there's
this TODO pass_stdarg::execute:
...
unsigned int
pass_stdarg::execute (function *fun)
{
/* TODO: Postpone expand_ifn_va_arg till after
optimize_va_list_gpr_fpr_size. */
expand_ifn_va_arg (fun);
if (flag_stdarg_opt
/* This optimization is only for stdarg functions. */
&& fun->stdarg != 0)
optimize_va_list_gpr_fpr_size (fun);
return 0;
}
...
Essentially, we want to rewrite optimize_va_list_gpr_fpr_size to work on
ifn_va_arg.
