https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99523
Bug ID: 99523
Summary: Declarations for variable names missing in GIMPLE dump
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: acoplan at gcc dot gnu.org
Target Milestone: ---
For the following testcase:
int f(__builtin_va_list *ap) { return __builtin_va_arg(*ap, int); }
on AArch64 at -O2 with -fdump-tree-optimized=-, we get:
;; Function f (f, funcdef_no=0, decl_uid=3583, cgraph_uid=1, symbol_order=0)
f (struct * ap)
{
int D.3591;
void * D.3592;
int * iftmp.2;
sizetype D.3596;
sizetype D.3597;
sizetype D.3598;
void * D.3599;
int D.3601;
int * iftmp.3;
void * D.3607;
sizetype D.3608;
int _4;
<bb 2> [local count: 1073741824]:
_9 = ap_2(D)->__gr_offs;
_10 = ap_2(D)->__stack;
if (_9 >= 0)
goto <bb 3>; [59.00%]
else
goto <bb 4>; [41.00%]
where the variables _9 and _10 are apparently missing declarations in the IR
dump. I believe the variables came from calls to get_initialized_tmp_var in
aarch64_gimplify_va_arg_expr.
Not sure if this is some missing bookkeeping around the gimplification or
perhaps a bug in the dumping code?
