Hello!
>> A patch that's in my local tree for quite some time. This removes >> redundant tests. >> >> LTO bootstrapped and tested on x86_64-unknown-linux-gnu, applied. >> >> Richard. >> >> 2012-07-13 Richard Guenther <rguent...@suse.de> >> >> * gimple.c (gimple_types_compatible_p_1): Remove redundant >> type attribute comparisons. >> (gimple_canonical_types_compatible_p): Likewise. >> > > I don't see why this is redundant since attributes aren't checked anywhere > else. Revert this part fixes: > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53959 This patch also breaks LTO profiledbootstrap [1]. Even simple hello world compilation breaks at: Starting program: /home/uros/gcc-build-fast/gcc/cc1 -O2 hello.c Program received signal SIGSEGV, Segmentation fault. update_path (path=path@entry=0xe8f775 "/usr/local/include", key=0x0) at ../../gcc-svn/trunk/gcc/prefix.c:260 260 if (key[0] != '$') Missing separate debuginfos, use: debuginfo-install gmp-5.0.2-6.fc17.x86_64 libmpc-0.9-2.fc17.2.x86_64 mpfr-3.1.0-2.fc17.x86_64 (gdb) bt #0 update_path (path=path@entry=0xe8f775 "/usr/local/include", key=0x0) at ../../gcc-svn/trunk/gcc/prefix.c:260 #1 0x0000000000cb1545 in add_standard_paths (cxx_stdinc=0, imultilib=0x0, iprefix=0x0, sysroot=0x0) at ../../gcc-svn/trunk/gcc/incpath.c:204 #2 register_include_chains (pfile=0x13cce70, sysroot=<optimized out>, iprefix=0x0, imultilib=0x0, stdinc=1, cxx_stdinc=0, verbose=0) at ../../gcc-svn/trunk/gcc/incpath.c:462 #3 0x0000000000ba9a30 in c_common_post_options (pfilename=0x138e130) at ../../gcc-svn/trunk/gcc/c-family/c-opts.c:894 #4 0x0000000000c5dd52 in process_options () at ../../gcc-svn/trunk/gcc/toplev.c:1212 #5 do_compile () at ../../gcc-svn/trunk/gcc/toplev.c:1832 #6 toplev_main(int, char**) (argc=3, argv=0x7fffffffddd8) at ../../gcc-svn/trunk/gcc/toplev.c:1939 #7 0x000000330bc21735 in __libc_start_main (main=0x74be10 <main>, argc=3, ubp_av=0x7fffffffddd8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffddc8) at libc-start.c:226 #8 0x0000000000a76075 in _start () The guard "&& key != 0" above the segfault is simply ignored. [1] http://gcc.gnu.org/ml/gcc-regression/2012-07/msg00067.html Uros.
