When I compile qt334 with the actual snapshot of gcc41 (20050730) I get an ICE when I enable autovectorisation.
Michael Cieslinski gcc41i -c -O2 -fpeel-loops -ftree-vectorize -o bug.o bug.i gcc41i: Internal error: Segmentation fault (program cc1) Please submit a full bug report. See <URL:http://gcc.gnu.org/bugs.html> for instructions. gcc41i -v Using built-in specs. Target: x86_64-unknown-linux-gnu Configured with: ../gcc-4.1-20050730/configure --prefix=/usr/local/gcc41i -- program-suffix=41i --with-arch=opteron --enable-languages=c,c++ --enable- checking Thread model: posix gcc version 4.1.0 20050730 (experimental) [EMAIL PROTECTED]:~/qt334-gcc41/qt-x11-free-3.3.4/plugins/src/imageformats/mng$ gdb - -args /usr/local/gcc41i/libexec/gcc/x86_64-unknown-linux-gnu/4.1.0/cc1 - fpreprocessed bug.i -quiet -dumpbase bug.i -march=opteron -auxbase-strip bug.o -O2 -version -fpeel-loops -ftree-vectorize - o /tmp/ccvyZWbO.s GNU gdb Red Hat Linux (6.1post-1.20040607.33rh) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu"...Using host libthread_db library "/lib64/tls/libthread_db.so.1". (gdb) run Starting program: /usr/local/gcc41i/libexec/gcc/x86_64-unknown-linux- gnu/4.1.0/cc1 -fpreprocessed bug.i -quiet -dumpbase bug.i -march=opteron - auxbase-strip bug.o -O2 -version -fpeel-loops -ftree-vectorize - o /tmp/ccvyZWbO.s GNU C version 4.1.0 20050730 (experimental) (x86_64-unknown-linux-gnu) compiled by GNU C version 4.1.0 20050730 (experimental). GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 Compiler executable checksum: f2e6cd82d6f19fbf7b643aaa98865f04 Program received signal SIGSEGV, Segmentation fault. 0x00000000005d8d4d in operand_equal_for_comparison_p (arg0=0x2a95a44f00, arg1=0x2a959b8a50, other=0x2a95a44f00) at ../../gcc-4.1-20050730/gcc/fold- const.c:2664 2664 { (gdb) where #0 0x00000000005d8d4d in operand_equal_for_comparison_p (arg0=0x2a95a44f00, arg1=0x2a959b8a50, other=0x2a95a44f00) at ../../gcc-4.1-20050730/gcc/fold- const.c:2664 #1 0x00000000005da8b4 in fold_cond_expr_with_comparison (type=0x2a958f6c60, arg0=0x2a95592190, arg1=Variable "arg1" is not available. ) at ../../gcc-4.1-20050730/gcc/fold-const.c:4369 #2 0x00000000005bdbfd in fold_ternary (code=Variable "code" is not available. ) at ../../gcc-4.1-20050730/gcc/fold-const.c:9979 #3 0x00000000005be5e1 in fold_build3 (code=COND_EXPR, type=0x2a958f6c60, op0=0x2a95592190, op1=0x2a95a44f00, op2=0x2a959b8a50) at ../../gcc-4.1- 20050730/gcc/fold-const.c:10536 #4 0x00000000005bdbfd in fold_ternary (code=Variable "code" is not available. ) at ../../gcc-4.1-20050730/gcc/fold-const.c:9979 #5 0x00000000005be5e1 in fold_build3 (code=COND_EXPR, type=0x2a958f6c60, op0=0x2a95592190, op1=0x2a95a44f00, op2=0x2a959b8a50) at ../../gcc-4.1- 20050730/gcc/fold-const.c:10536 #6 0x00000000005bdbfd in fold_ternary (code=Variable "code" is not available. ) at ../../gcc-4.1-20050730/gcc/fold-const.c:9979 #7 0x00000000005be5e1 in fold_build3 (code=COND_EXPR, type=0x2a958f6c60, op0=0x2a95592190, op1=0x2a95a44f00, op2=0x2a959b8a50) at ../../gcc-4.1- 20050730/gcc/fold-const.c:10536 #8 0x00000000005bdbfd in fold_ternary (code=Variable "code" is not available. and so on in an endless loop ... -- Summary: Segmentation fault in in fold_ternary, file fold- const.c:9979 Product: gcc Version: 4.1.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: micis at gmx dot de CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: x86_64-unknown-linux-gnu GCC host triplet: x86_64-unknown-linux-gnu GCC target triplet: x86_64-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23179
