http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53727
Bug #: 53727
Summary: ICE when compiling firefox with PGO and LTO (not OOM)
Classification: Unclassified
Product: gcc
Version: 4.7.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: io...@yandex.ru
gcc 4.7.1 produces error when building firefox 12 with PGO and partial LTO. The
same problem was with gcc 4.7.0:
LANG=C c++ -o jsatom.o -c -fPIC -fno-rtti -Wpointer-arith
-Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor
-Wcast-align -Wno-invalid-offsetof -Wno-variadic-macros -Werror=return-type
-Wno-long-long -march=prescott -mtune=prescott -mfpmath=sse -msse2 -msse3 -O2
-fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -flto
-fuse-linker-plugin -O3 -freorder-blocks-and-partition -pthread -g
-fprofile-use -fprofile-correction -Wcoverage-mismatch -O3 -fomit-frame-pointer
jsatom.cpp
/home/ioctl/ff-build-semilto/src/mozilla-release/js/src/jsatom.cpp: In function
'js_FinishAtomState(JSRuntime*)':
/home/ioctl/ff-build-semilto/src/mozilla-release/js/src/jsatom.cpp:354:1:
internal compiler error: in create_pseudo_cfg, at dwarf2cfi.c:2735
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.archlinux.org/> for instructions.
At that, there is no such problem if remove "-fprofile-use
-fprofile-correction" keys, and problem not disappears if remove "-flto" key.
Profile data was produced by binary compiled with the same flags (but with
"-fprofile-generate" instead of "-fprofile-use -fprofile-correction").
Attached are preprocessed jsatom.cpp source, it's profile data and "c++ -v
-save-temps" output, and two files generated with the "c++ -v -save-temps ..."
command.
