IPA constant propagation start: IPA structures before propagation: Jump functions: Jump functions of caller child1::child1()/39: Jump functions of caller top::top()/38: Jump functions of caller intermediate::intermediate()/37: Jump functions of caller child2::child2()/36: Jump functions of caller int main(int, char**)/19: callsite int main(int, char**)/19 -> void test(top&)/15 : param 0: KNOWN TYPE: base struct child1, offset 0, component struct top callsite int main(int, char**)/19 -> child1::child1()/18 : param 0: KNOWN TYPE: base struct child1, offset 0, component struct child1 Jump functions of caller child1::child1()/18: Jump functions of caller child1::child1()/17: callsite child1::child1()/17 -> top::top()/7 : param 0: ANCESTOR: 0, offset 0, struct top, agg_preserved, type_preserved Jump functions of caller void test(top&)/15: callsite void test(top&)/15 -> void test(top&)/15 : param 0: KNOWN TYPE: base struct child2, offset 0, component struct top callsite void test(top&)/15 -> child2::child2()/14 : param 0: KNOWN TYPE: base struct child2, offset 0, component struct child2 callsite void test(top&)/15 -> void child1::childf()/5 : param 0: PASS THROUGH: 0, op nop_expr, agg_preserved, type_preserved Jump functions of caller child2::child2()/14: Jump functions of caller child2::child2()/13: callsite child2::child2()/13 -> intermediate::intermediate()/10 : param 0: ANCESTOR: 0, offset 0, struct intermediate, agg_preserved, type_preserved Jump functions of caller intermediate::intermediate()/11: Jump functions of caller intermediate::intermediate()/10: callsite intermediate::intermediate()/10 -> top::top()/7 : param 0: ANCESTOR: 0, offset 0, struct top, agg_preserved, type_preserved Jump functions of caller top::top()/8: Jump functions of caller top::top()/7: Jump functions of caller void child1::childf()/5: callsite void child1::childf()/5 -> virtual int top::topf()/3 : param 0: ANCESTOR: 0, offset 0, struct top, agg_preserved, type_preserved indirect polymorphic callsite, calling param 0, offset 0, for stmt OBJ_TYPE_REF(_4;_5->0) (_5); param 0: ANCESTOR: 0, offset 0, struct top, agg_preserved, type_preserved Jump functions of caller virtual int intermediate::topf()/4: Jump functions of caller virtual int top::topf()/3: Propagating constants: Function int main(int, char**)/19 is not versionable, reason: insufficient body availability. Not considering child1::child1() for cloning; no hot calls. Function void test(top&)/15 is not versionable, reason: insufficient body availability. Considering child2::child2() for cloning. Considering intermediate::intermediate() for cloning. Considering top::top() for cloning. Considering void child1::childf() for cloning. Not considering virtual int intermediate::topf() for cloning; no hot calls. Considering virtual int top::topf() for cloning. overall_size: 53, max_new_size: 11001 IPA lattices after all propagation: Lattices: Node: int main(int, char**)/19: param [0]: BOTTOM AGGS BOTTOM param [1]: BOTTOM AGGS BOTTOM Node: child1::child1()/17: param [0]: BOTTOM AGGS BOTTOM Node: void test(top&)/15: param [0]: BOTTOM AGGS BOTTOM Node: child2::child2()/13: param [0]: VARIABLE BINFO struct child2 [loc_time: 0, loc_size: 0, prop_time: 0, prop_size: 0] AGGS VARIABLE Node: intermediate::intermediate()/10: param [0]: VARIABLE BINFO struct child2 [loc_time: 0, loc_size: 0, prop_time: 0, prop_size: 0] AGGS BOTTOM Node: top::top()/7: param [0]: VARIABLE BINFO struct child2 [loc_time: 0, loc_size: 0, prop_time: 0, prop_size: 0] AGGS BOTTOM Node: void child1::childf()/5: param [0]: VARIABLE virt_call flag set AGGS VARIABLE Node: virtual int intermediate::topf()/4: param [0]: BOTTOM AGGS BOTTOM Node: virtual int top::topf()/3: param [0]: VARIABLE AGGS BOTTOM IPA decision stage: IPA constant propagation end Reclaiming functions: Reclaiming variables: Clearing address taken flags: Symbol table: _ZN6child1C4Ev/39 (child1::child1()) @0x7fe5e6f4ee60 Type: function Visibility: asm_written external public weak comdat artificial References: Referring: Availability: not_available First run: 0 Function flags: Called by: Calls: _ZN3topC4Ev/38 (top::top()) @0x7fe5e6f4e8a0 Type: function Visibility: asm_written external public weak comdat artificial References: Referring: Availability: not_available First run: 0 Function flags: Called by: Calls: _ZN12intermediateC4Ev/37 (intermediate::intermediate()) @0x7fe5e6f4e450 Type: function Visibility: asm_written external public weak comdat artificial References: Referring: Availability: not_available First run: 0 Function flags: Called by: Calls: _ZN6child2C4Ev/36 (child2::child2()) @0x7fe5e6f4e000 Type: function Visibility: asm_written external public weak comdat artificial References: Referring: Availability: not_available First run: 0 Function flags: Called by: Calls: _ZTVN10__cxxabiv117__class_type_infoE/34 (int (* const __cxxabiv1::__class_type_info::_ZTVN10__cxxabiv117__class_type_infoE [])(...)) @0x7fe5e6f3ff78 Type: variable Body removed by symtab_remove_unreachable_nodes Visibility: external public visibility_specified virtual artificial References: Referring: _ZTI3top/30 (addr) Availability: not_available Varpool flags: read-only _ZTVN10__cxxabiv120__si_class_type_infoE/33 (int (* const __cxxabiv1::__si_class_type_info::_ZTVN10__cxxabiv120__si_class_type_infoE [])(...)) @0x7fe5e6f3ff00 Type: variable Body removed by symtab_remove_unreachable_nodes Visibility: external public visibility_specified virtual artificial References: Referring: _ZTI6child2/24 (addr)_ZTI12intermediate/28 (addr)_ZTI6child1/26 (addr) Availability: not_available Varpool flags: read-only _ZTS3top/31 (const char _ZTS3top [5]) @0x7fe5e6f3fe88 Type: variable definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZTS3top one_only artificial References: Referring: _ZTI3top/30 (addr) Availability: available Varpool flags: initialized read-only const-value-known _ZTI3top/30 (const __class_type_info_pseudo _ZTI3top) @0x7fe5e6f3fe10 Type: variable definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZTI3top one_only artificial References: _ZTVN10__cxxabiv117__class_type_infoE/34 (addr)_ZTS3top/31 (addr) Referring: _ZTI12intermediate/28 (addr)_ZTV3top/23 (addr)_ZTI6child1/26 (addr) Availability: available Varpool flags: initialized read-only const-value-known _ZTS12intermediate/29 (const char _ZTS12intermediate [15]) @0x7fe5e6f3fd98 Type: variable definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZTS12intermediate one_only artificial References: Referring: _ZTI12intermediate/28 (addr) Availability: available Varpool flags: initialized read-only const-value-known _ZTI12intermediate/28 (const __si_class_type_info_pseudo _ZTI12intermediate) @0x7fe5e6f3fd20 Type: variable definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZTI12intermediate one_only artificial References: _ZTVN10__cxxabiv120__si_class_type_infoE/33 (addr)_ZTS12intermediate/29 (addr)_ZTI3top/30 (addr) Referring: _ZTI6child2/24 (addr)_ZTV12intermediate/22 (addr) Availability: available Varpool flags: initialized read-only const-value-known _ZTS6child1/27 (const char _ZTS6child1 [8]) @0x7fe5e6f3fca8 Type: variable definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZTS6child1 one_only artificial References: Referring: _ZTI6child1/26 (addr) Availability: available Varpool flags: initialized read-only const-value-known _ZTI6child1/26 (const __si_class_type_info_pseudo _ZTI6child1) @0x7fe5e6f3fc30 Type: variable definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZTI6child1 one_only artificial References: _ZTVN10__cxxabiv120__si_class_type_infoE/33 (addr)_ZTS6child1/27 (addr)_ZTI3top/30 (addr) Referring: _ZTV6child1/21 (addr) Availability: available Varpool flags: initialized read-only const-value-known _ZTS6child2/25 (const char _ZTS6child2 [8]) @0x7fe5e6f3fbb8 Type: variable definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZTS6child2 one_only artificial References: Referring: _ZTI6child2/24 (addr) Availability: available Varpool flags: initialized read-only const-value-known _ZTI6child2/24 (const __si_class_type_info_pseudo _ZTI6child2) @0x7fe5e6f3fb40 Type: variable definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZTI6child2 one_only artificial References: _ZTVN10__cxxabiv120__si_class_type_infoE/33 (addr)_ZTS6child2/25 (addr)_ZTI12intermediate/28 (addr) Referring: _ZTV6child2/20 (addr) Availability: available Varpool flags: initialized read-only const-value-known _ZTV3top/23 (int (* top::_ZTV3top [3])(...)) @0x7fe5e6f3fac8 Type: variable definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZTV3top one_only virtual artificial References: _ZTI3top/30 (addr)_ZN3top4topfEv/3 (addr) Referring: _ZN3topC2Ev/7 (addr) Availability: available Varpool flags: initialized read-only const-value-known _ZTV12intermediate/22 (int (* intermediate::_ZTV12intermediate [3])(...)) @0x7fe5e6f3fa50 Type: variable definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZTV12intermediate one_only virtual artificial References: _ZTI12intermediate/28 (addr)_ZN12intermediate4topfEv/4 (addr) Referring: _ZN12intermediateC2Ev/10 (addr) Availability: available Varpool flags: initialized read-only const-value-known _ZTV6child1/21 (int (* child1::_ZTV6child1 [3])(...)) @0x7fe5e6f3f9d8 Type: variable definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZTV6child1 one_only virtual artificial References: _ZTI6child1/26 (addr)_ZN3top4topfEv/3 (addr) Referring: _ZN6child1C2Ev/17 (addr) Availability: available Varpool flags: initialized read-only const-value-known _ZTV6child2/20 (int (* child2::_ZTV6child2 [3])(...)) @0x7fe5e6f3f960 Type: variable definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZTV6child2 one_only virtual artificial References: _ZTI6child2/24 (addr)_ZN12intermediate4topfEv/4 (addr) Referring: _ZN6child2C2Ev/13 (addr) Availability: available Varpool flags: initialized read-only const-value-known main/19 (int main(int, char**)) @0x7fe5e6f572e0 Type: function definition analyzed Visibility: externally_visible public References: Referring: Availability: overwritable First run: 0 Function flags: body only_called_at_startup Called by: Calls: _Z4testR3top/15 (1.00 per call) (can throw external) _ZN6child1C1Ev/18 (1.00 per call) _ZN6child1C1Ev/18 (child1::child1()) @0x7fe5e6f57170 Type: function definition analyzed alias cpp_implicit_alias Visibility: externally_visible public weak comdat comdat_group:_ZN6child1C5Ev one_only artificial Same comdat group as: _ZN6child1C2Ev/17 References: _ZN6child1C2Ev/17 (alias) Referring: Availability: available First run: 0 Function flags: Called by: main/19 (1.00 per call) Calls: _ZN6child1C2Ev/17 (child1::child1()) @0x7fe5e6f57000 Type: function definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZN6child1C5Ev one_only artificial Same comdat group as: _ZN6child1C1Ev/18 References: _ZTV6child1/21 (addr) Referring: _ZN6child1C1Ev/18 (alias) Availability: available First run: 0 Function flags: body Called by: Calls: _ZN3topC2Ev/7 (1.00 per call) _Z4testR3top/15 (void test(top&)) @0x7fe5e6f4ecf0 Type: function definition analyzed Visibility: externally_visible public References: Referring: Availability: overwritable First run: 0 Function flags: body Called by: main/19 (1.00 per call) (can throw external) _Z4testR3top/15 (1.00 per call) (can throw external) Calls: _Z4testR3top/15 (1.00 per call) (can throw external) _ZN6child2C1Ev/14 (1.00 per call) _ZN6child16childfEv/5 (1.00 per call) (can throw external) _ZN6child2C1Ev/14 (child2::child2()) @0x7fe5e6f4eb80 Type: function definition analyzed alias cpp_implicit_alias Visibility: externally_visible public weak comdat comdat_group:_ZN6child2C5Ev one_only artificial Same comdat group as: _ZN6child2C2Ev/13 References: _ZN6child2C2Ev/13 (alias) Referring: Availability: available First run: 0 Function flags: Called by: _Z4testR3top/15 (1.00 per call) Calls: _ZN6child2C2Ev/13 (child2::child2()) @0x7fe5e6f4ea10 Type: function definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZN6child2C5Ev one_only artificial Same comdat group as: _ZN6child2C1Ev/14 References: _ZTV6child2/20 (addr) Referring: _ZN6child2C1Ev/14 (alias) Availability: available First run: 0 Function flags: body Called by: Calls: _ZN12intermediateC2Ev/10 (1.00 per call) _ZN12intermediateC1Ev/11 (intermediate::intermediate()) @0x7fe5e6f4e730 Type: function definition analyzed alias cpp_implicit_alias Visibility: externally_visible public weak comdat comdat_group:_ZN12intermediateC5Ev one_only artificial Same comdat group as: _ZN12intermediateC2Ev/10 References: _ZN12intermediateC2Ev/10 (alias) Referring: Availability: available First run: 0 Function flags: Called by: Calls: _ZN12intermediateC2Ev/10 (intermediate::intermediate()) @0x7fe5e6f4e5c0 Type: function definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZN12intermediateC5Ev one_only artificial Same comdat group as: _ZN12intermediateC1Ev/11 References: _ZTV12intermediate/22 (addr) Referring: _ZN12intermediateC1Ev/11 (alias) Availability: available First run: 0 Function flags: body Called by: _ZN6child2C2Ev/13 (1.00 per call) Calls: _ZN3topC2Ev/7 (1.00 per call) _ZN3topC1Ev/8 (top::top()) @0x7fe5e6f4e2e0 Type: function definition analyzed alias cpp_implicit_alias Visibility: externally_visible public weak comdat comdat_group:_ZN3topC5Ev one_only artificial Same comdat group as: _ZN3topC2Ev/7 References: _ZN3topC2Ev/7 (alias) Referring: Availability: available First run: 0 Function flags: Called by: Calls: _ZN3topC2Ev/7 (top::top()) @0x7fe5e6f4e170 Type: function definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZN3topC5Ev one_only artificial Same comdat group as: _ZN3topC1Ev/8 References: _ZTV3top/23 (addr) Referring: _ZN3topC1Ev/8 (alias) Availability: available First run: 0 Function flags: body Called by: _ZN6child1C2Ev/17 (1.00 per call) _ZN12intermediateC2Ev/10 (1.00 per call) Calls: _ZN6child16childfEv/5 (void child1::childf()) @0x7fe5e6f40cf0 Type: function definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZN6child16childfEv one_only References: _ZN3top4topfEv/3 (addr) (speculative) Referring: Availability: available First run: 0 Function flags: body Called by: _Z4testR3top/15 (1.00 per call) (can throw external) Calls: _ZN3top4topfEv/3 (speculative) (0.80 per call) Has 1 outgoing edges for indirect calls. _ZN12intermediate4topfEv/4 (virtual int intermediate::topf()) @0x7fe5e6f408a0 Type: function definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZN12intermediate4topfEv one_only virtual Address is taken. References: Referring: _ZTV6child2/20 (addr)_ZTV12intermediate/22 (addr) Availability: available First run: 0 Function flags: body Called by: Calls: _ZN3top4topfEv/3 (virtual int top::topf()) @0x7fe5e6f405c0 Type: function definition analyzed Visibility: externally_visible public weak comdat comdat_group:_ZN3top4topfEv one_only virtual Address is taken. References: Referring: _ZTV3top/23 (addr)_ZTV6child1/21 (addr)_ZN6child16childfEv/5 (addr) (speculative) Availability: available First run: 0 Function flags: body Called by: _ZN6child16childfEv/5 (0.80 per call) (speculative) Calls: int main(int, char**) (int argc, char * * argv) { struct child1 c; : child1::child1 (&c); test (&c.D.2263); c ={v} {CLOBBER}; return 0; } child1::child1() (struct child1 * const this) { struct top * _2; : _2 = &this_1(D)->D.2263; top::top (_2); this_1(D)->D.2263._vptr.top = &MEM[(void *)&_ZTV6child1 + 16B]; return; } void test(top&) (struct top & t) { struct child2 d; : child1::childf (t_1(D)); child2::child2 (&d); test (&d.D.2280.D.2254); d ={v} {CLOBBER}; return; } child2::child2() (struct child2 * const this) { struct intermediate * _2; : _2 = &this_1(D)->D.2280; intermediate::intermediate (_2); this_1(D)->D.2280.D.2254._vptr.top = &MEM[(void *)&_ZTV6child2 + 16B]; return; } intermediate::intermediate() (struct intermediate * const this) { struct top * _2; : _2 = &this_1(D)->D.2254; top::top (_2); this_1(D)->D.2254._vptr.top = &MEM[(void *)&_ZTV12intermediate + 16B]; return; } top::top() (struct top * const this) { : this_2(D)->_vptr.top = &MEM[(void *)&_ZTV3top + 16B]; return; } void child1::childf() (struct child1 * const this) { int (*__vtbl_ptr_type) () * _3; int (*__vtbl_ptr_type) () _4; struct top * _5; : _3 = this_1(D)->D.2263._vptr.top; _4 = *_3; _5 = &this_1(D)->D.2263; OBJ_TYPE_REF(_4;(struct top)_5->0) (_5); return; } virtual int intermediate::topf() (struct intermediate * const this) { : return 0; } virtual int top::topf() (struct top * const this) { : return; } ;; Function virtual int top::topf() (_ZN3top4topfEv, funcdef_no=3, decl_uid=2243, cgraph_uid=3, symbol_order=3) Modification phase of node virtual int top::topf()/3 virtual int top::topf() (struct top * const this) { : return; } ;; Function virtual int intermediate::topf() (_ZN12intermediate4topfEv, funcdef_no=4, decl_uid=2252, cgraph_uid=4, symbol_order=4) Modification phase of node virtual int intermediate::topf()/4 virtual int intermediate::topf() (struct intermediate * const this) { : return 0; } ;; Function void test(top&) (_Z4testR3top, funcdef_no=6, decl_uid=2285, cgraph_uid=15, symbol_order=15) Modification phase of node void test(top&)/15 void test(top&) (struct top & t) { struct child2 d; : child1::childf (t_1(D)); child2::child2 (&d); test (&d.D.2280.D.2254); d ={v} {CLOBBER}; return; } ;; Function int main(int, char**) (main, funcdef_no=16, decl_uid=2363, cgraph_uid=19, symbol_order=19) (executed once) Modification phase of node int main(int, char**)/19 int main(int, char**) (int argc, char * * argv) { struct child1 c; : child1::child1 (&c); test (&c.D.2263); c ={v} {CLOBBER}; return 0; }