https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98338
--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
So the following 2 functions are merged:
(gdb) p original->debug()
_ZNK13operator_plus9op1_rangeER6irangeP9tree_nodeRKS0_S5_/1 (bool
operator_plus::op1_range(irange&, tree, const irange&, const irange&) const)
@0x7ffff756b000
Type: function definition analyzed
Visibility: externally_visible public
References: range_op_handler_type_0_0/6 (read) pointer_tree_table/5 (read)
integral_tree_table/4 (read)
_ZNK14range_operator10fold_rangeER6irangeP9tree_nodeRKS0_S5_/0 (addr)
(speculative)
Referring:
Availability: available
Profile id: 1426567252
Function flags: count:15202 (precise) first_run:5548 body hot
Called by:
Calls: _ZNK14range_operator10fold_rangeER6irangeP9tree_nodeRKS0_S5_/0
(speculative) (15202 (adjusted),1.00 per call)
Polymorphic indirect call of type const struct range_operator
token:0(speculative) (0 (adjusted),0.00 per call) num speculative call targets:
1
Outer type (dynamic):struct range_operator (or a derived type) offset 0
bool operator_plus::op1_range (const struct operator_plus * const this, struct
irange & r, struct tree_node * type, const struct irange & lhs, const struct
irange & op2)
{
<bb 2> [count: 15202]:
range_op_handler_type_0_0.1_4 = range_op_handler_type_0_0;
if (range_op_handler_type_0_0.1_4 == 1)
goto <bb 3>; [0.00%]
else
goto <bb 4>; [100.00%]
<bb 3> [count: 0]:
_11 = pointer_tree_table.m_range_tree[2];
goto <bb 6>; [100.00%]
<bb 4> [count: 15202]:
if (range_op_handler_type_0_0.1_4 != 0)
goto <bb 5>; [100.00%]
else
goto <bb 6>; [0.00%]
<bb 5> [count: 15202]:
_12 = integral_tree_table.m_range_tree[2];
<bb 6> [count: 15202]:
# _13 = PHI <_11(3), 0B(4), _12(5)>
_1 = _13->_vptr.range_operator;
_2 = *_1;
_10 = OBJ_TYPE_REF(_2;(const struct range_operator)_13->0) (_13, r_5(D),
type_6(D), lhs_7(D), op2_8(D));
return _10;
}
$26 = void
(gdb) p alias->debug()
_ZNK13operator_plus9op2_rangeER6irangeP9tree_nodeRKS0_S5_/2 (bool
operator_plus::op2_range(irange&, tree, const irange&, const irange&) const)
@0x7ffff756b110
Type: function definition analyzed
Visibility: externally_visible public
References: range_op_handler_type_0_0/6 (read) pointer_tree_table/5 (read)
integral_tree_table/4 (read)
_ZNK14range_operator10fold_rangeER6irangeP9tree_nodeRKS0_S5_/0 (addr)
(speculative)
Referring:
Availability: available
Profile id: 1031185534
Function flags: count:15141 (precise) first_run:6411 body icf_merged hot
Called by:
Calls: _ZNK14range_operator10fold_rangeER6irangeP9tree_nodeRKS0_S5_/0
(speculative) (15141 (adjusted),1.00 per call)
Polymorphic indirect call of type const struct range_operator
token:0(speculative) (0 (adjusted),0.00 per call) num speculative call targets:
1
Outer type (dynamic):struct range_operator (or a derived type) offset 0
(gdb) p debug_function(alias->decl, 0)
bool operator_plus::op2_range (const struct operator_plus * const this, struct
irange & r, struct tree_node * type, const struct irange & lhs, const struct
irange & op1)
{
<bb 2> [count: 15141]:
range_op_handler_type_0_0.1_4 = range_op_handler_type_0_0;
if (range_op_handler_type_0_0.1_4 == 1)
goto <bb 3>; [0.00%]
else
goto <bb 4>; [100.00%]
<bb 3> [count: 0]:
_11 = pointer_tree_table.m_range_tree[2];
goto <bb 6>; [100.00%]
<bb 4> [count: 15141]:
if (range_op_handler_type_0_0.1_4 != 0)
goto <bb 5>; [100.00%]
else
goto <bb 6>; [0.00%]
<bb 5> [count: 15141]:
_12 = integral_tree_table.m_range_tree[2];
<bb 6> [count: 15141]:
# _13 = PHI <_11(3), 0B(4), _12(5)>
_1 = _13->_vptr.range_operator;
_2 = *_1;
_10 = OBJ_TYPE_REF(_2;(const struct range_operator)_13->0) (_13, r_5(D),
type_6(D), lhs_7(D), op1_8(D));
return _10;
}
As seen both have a speculative indirect call. That's properly merged into:
$29 = void
(gdb) p dst->debug()
_ZNK13operator_plus9op1_rangeER6irangeP9tree_nodeRKS0_S5_/1 (bool
operator_plus::op1_range(irange&, tree, const irange&, const irange&) const)
@0x7ffff756b000
Type: function definition analyzed
Visibility: externally_visible public
References: range_op_handler_type_0_0/6 (read) pointer_tree_table/5 (read)
integral_tree_table/4 (read)
_ZNK14range_operator10fold_rangeER6irangeP9tree_nodeRKS0_S5_/0 (addr)
(speculative)
Referring:
Availability: available
Profile id: 1426567252
Function flags: count:30343 (precise) first_run:5548 body icf_merged hot
Called by:
Calls: _ZNK14range_operator10fold_rangeER6irangeP9tree_nodeRKS0_S5_/0
(speculative) (30343 (adjusted),1.00 per call)
Polymorphic indirect call of type const struct range_operator
token:0(speculative) (0 (adjusted),0.00 per call) num speculative call targets:
1
Outer type (dynamic):struct range_operator (or a derived type) offset 0
$30 = void
(gdb) p debug_function(dst->decl, 0)
bool operator_plus::op1_range (const struct operator_plus * const this, struct
irange & r, struct tree_node * type, const struct irange & lhs, const struct
irange & op2)
{
<bb 2> [count: 30343]:
range_op_handler_type_0_0.1_4 = range_op_handler_type_0_0;
if (range_op_handler_type_0_0.1_4 == 1)
goto <bb 3>; [0.00%]
else
goto <bb 4>; [100.00%]
<bb 3> [count: 0]:
_11 = pointer_tree_table.m_range_tree[2];
goto <bb 6>; [INV]
<bb 4> [count: 30343]:
if (range_op_handler_type_0_0.1_4 != 0)
goto <bb 5>; [100.00%]
else
goto <bb 6>; [0.00%]
<bb 5> [count: 30343]:
_12 = integral_tree_table.m_range_tree[2];
<bb 6> [count: 30343]:
# _13 = PHI <_11(3), 0B(4), _12(5)>
_1 = _13->_vptr.range_operator;
_2 = *_1;
_10 = OBJ_TYPE_REF(_2;(const struct range_operator)_13->0) (_13, r_5(D),
type_6(D), lhs_7(D), op2_8(D));
return _10;
}
which seems fine. But we end up with an inliner checking error:
(gdb) p *size_info
$33 = {
estimated_self_stack_size = 0,
self_size = 21,
size = 30
}
@Honza: Can you please take a look?
