https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63595
--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
Same problem can be even seen on x86_64-linux-pc:
_ZNK13TriangulationILi3EE3endEv:
.LFB5569:
.cfi_startproc
>>>>> subq $24, %rsp
.cfi_def_cfa_offset 32
movq %rsp, %rdi
call _ZNK13TriangulationILi3EE8end_quadEv
addq $24, %rsp
.cfi_def_cfa_offset 8
ret
.cfi_endproc
_ZNK13TriangulationILi3EE8end_quadEv:
.LFB2586:
.loc 3 2901 0
.cfi_startproc
.LVL898:
.loc 3 2901 0
movq %rdi, %rax
.LBB27759:
.LBB27760:
.LBB27761:
.LBB27762:
.loc 14 41 0
movl $-1, (%rdi)
movl $-1, 4(%rdi)
movq %rsi, 8(%rdi)
.LBE27762:
.LBE27761:
.LBE27760:
.LBE27759:
.loc 3 2905 0
ret
.cfi_endproc
Body of the function is created as tail-call trunk by IPA-ICF:
Triangulation<dim>::raw_cell_iterator Triangulation<dim>::end() const [with int
dim = 3; Triangulation<dim>::raw_cell_iterator = TriaRawIterator<3,
CellAccessor<3> >] (const struct Triangulation * const this)
{
;; basic block 2, loop depth 0
;; pred: ENTRY
Triangulation<3>::end_quad (this_2(D)); [tail call]
return;
;; succ: EXIT
}
;; Generating RTL for gimple basic block 2
;; Triangulation<3>::end_quad (this_2(D)); [tail call]
(insn 7 6 8 (parallel [
(set (reg:DI 85)
(plus:DI (reg/f:DI 78 virtual-stack-vars)
(const_int -16 [0xfffffffffffffff0])))
(clobber (reg:CC 17 flags))
]) -1
(nil))
(insn 8 7 9 (set (reg:DI 4 si)
(reg/f:DI 84 [ this ])) -1
(nil))
(insn 9 8 10 (set (reg:DI 5 di)
(reg:DI 85)) -1
(nil))
(call_insn 10 9 0 (call (mem:QI (symbol_ref/i:DI
("_ZNK13TriangulationILi3EE8end_quadEv") [flags 0x1] <function_decl
0x7ff17d629bd0 end_quad>) [0 end_quad S1 A8])
(const_int 0 [0])) -1
(expr_list:REG_CALL_DECL (symbol_ref/i:DI
("_ZNK13TriangulationILi3EE8end_quadEv") [flags 0x1] <function_decl
0x7ff17d629bd0 end_quad>)
(expr_list:REG_EH_REGION (const_int 0 [0])
(nil)))
(expr_list:DI (use (reg:DI 5 di))
(expr_list:DI (use (reg:DI 4 si))
(nil))))
