http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54487
Bug #: 54487
Summary: [4.8 Regression] profiledbootstrap broken by r190952
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: gcov-profile
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: mar...@trippelsdorf.de
Breakage varies from bootstrap to bootstrap. Here is an example:
...
In file included from ../../gcc/gcc/config/i386/i386.c:40910:0:
./gt-i386.h: In function ‘ix86_set_reg_reg_cost(machine_mode)’:
./gt-i386.h:168:2: error: corrupted profile info: edge from 39 to 40 exceeds
maximal count
};
^
./gt-i386.h:168:2: error: corrupted profile info: edge from 40 to 41 exceeds
maximal count
./gt-i386.h:168:2: error: corrupted profile info: edge from 41 to 43 exceeds
maximal count
./gt-i386.h:168:2: error: corrupted profile info: edge from 42 to 43 exceeds
maximal count
./gt-i386.h:168:2: error: corrupted profile info: profile data is not
flow-consistent
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
30-42 thought to be -133660
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
30-31 thought to be 133660
./gt-i386.h:168:2: error: corrupted profile info: number of iterations for
basic block 31 thought to be 267320
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
31-32 thought to be 133660
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
31-34 thought to be 133660
./gt-i386.h:168:2: error: corrupted profile info: number of iterations for
basic block 34 thought to be 244050
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
34-35 thought to be 110390
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
34-38 thought to be 133660
./gt-i386.h:168:2: error: corrupted profile info: number of iterations for
basic block 38 thought to be 226620
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
38-39 thought to be 92960
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
38-43 thought to be 133660
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
39-42 thought to be 92960
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
39-40 thought to be 0
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
40-42 thought to be 0
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
40-41 thought to be 0
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
41-42 thought to be 0
./gt-i386.h:168:2: error: corrupted profile info: number of executions for edge
41-43 thought to be 0
make[3]: *** [i386.o] Error
Happens with (I'm a Gentoo ricer):
make -j4 BOOT_CFLAGS="-march=native -O3 -pipe" STAGE1_CFLAGS="-march=native -O3
-pipe" CFLAGS_FOR_TARGET="-march=native -O3 -pipe"
CXXFLAGS_FOR_TARGET="-march=native -O3 -pipe" profiledbootstrap
(and
../gcc/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.8.0
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.8.0/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.8.0
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.8.0/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.8.0/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.8.0/include/g++-v4
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec
--disable-fixed-point --without-ppl --without-cloog --enable-lto --enable-nls
--without-included-gettext --with-system-zlib --disable-werror
--enable-initfini-array --with-gold --enable-secureplt --disable-multilib
--enable-libmudflap --disable-libssp --disable-libgomp --enable-cld
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.8.0/python
--enable-checking=release --disable-libgcj --enable-languages=c,c++
--enable-shared --enable-threads=posix --enable-__cxa_atexit
--enable-clocale=gnu --with-build-config=bootstrap-lto
--with-boot-ldflags="-Wl,-O1,--hash-style=gnu,--as-needed,--gc-sections,--icf=safe,--icf-iterations=3"
--enable-version-specific-runtime-libs --disable-libstdcxx-pch
--enable-libstdcxx-time=yes
)
