https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63576
Bug ID: 63576
Summary: [5 Regression] ICE : in ipa_merge_profiles, at
ipa-utils.c:540 during Firefox LTO/PGO build
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
CC: marxin at gcc dot gnu.org
% wget trippelsdorf.de/testcase.tar.bz2
% tar xvjf testcase.tar.bz2
% g++ -w -march=amdfam10 -flto=4 -fprofile-use -fprofile-correction
-ffunction-sections -fdata-sections -fno-rtti -fno-exceptions -fno-math-errno
-std=gnu++0x -pipe -O3 Unified_cpp_js_src1.ii Unified_cpp_js_src2.ii
Unified_cpp_js_src3.ii
lto1: internal compiler error: in ipa_merge_profiles, at ipa-utils.c:540
0x7f7d55 ipa_merge_profiles(cgraph_node*, cgraph_node*)
../../gcc/gcc/ipa-utils.c:540
0xf57883 ipa_icf::sem_function::merge(ipa_icf::sem_item*)
../../gcc/gcc/ipa-icf.c:625
0xf5cc86 ipa_icf::sem_item_optimizer::merge_classes(unsigned int)
../../gcc/gcc/ipa-icf.c:2241
0xf60bf9 ipa_icf::sem_item_optimizer::execute()
../../gcc/gcc/ipa-icf.c:1602
0xf61671 ipa_icf_driver
../../gcc/gcc/ipa-icf.c:2319
0xf61671 ipa_icf::pass_ipa_icf::execute(function*)
../../gcc/gcc/ipa-icf.c:2366
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions
-fno-ipa-icf "fixes" the issue.
