https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917
Andrey Tarasevich <tarasevich at cs dot uni-saarland.de> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tarasevich at cs dot uni-saarland. | |de --- Comment #3 from Andrey Tarasevich <tarasevich at cs dot uni-saarland.de> --- Is it the same bug? It is triggered only if printf() is called. → /home/tarasevich/build/bin/gcc492 -v -save-temps -O3 test_case_3001.c Using built-in specs. COLLECT_GCC=/home/tarasevich/build/bin/gcc492 COLLECT_LTO_WRAPPER=/home/tarasevich/build/libexec/gcc/x86_64-unknown-linux-gnu/4.9.2/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: ../../source/gcc_492/configure --enable-coverage --prefix=/home/tarasevich/build/ --program-suffix=492 --disable-multilib Thread model: posix gcc version 4.9.2 (GCC) COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O3' '-mtune=generic' '-march=x86-64' /home/tarasevich/build/libexec/gcc/x86_64-unknown-linux-gnu/4.9.2/cc1 -E -quiet -v -imultiarch x86_64-linux-gnu test_case_3001.c -mtune=generic -march=x86-64 -O3 -fpch-preprocess -o test_case_3001.i ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring nonexistent directory "/home/tarasevich/build/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../x86_64-unknown-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /home/tarasevich/build/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/include /usr/local/include /home/tarasevich/build/include /home/tarasevich/build/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/include-fixed /usr/include/x86_64-linux-gnu /usr/include End of search list. COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O3' '-mtune=generic' '-march=x86-64' /home/tarasevich/build/libexec/gcc/x86_64-unknown-linux-gnu/4.9.2/cc1 -fpreprocessed test_case_3001.i -quiet -dumpbase test_case_3001.c -mtune=generic -march=x86-64 -auxbase test_case_3001 -O3 -version -o test_case_3001.s GNU C (GCC) version 4.9.2 (x86_64-unknown-linux-gnu) compiled by GNU C version 4.9.2, GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 GNU C (GCC) version 4.9.2 (x86_64-unknown-linux-gnu) compiled by GNU C version 4.9.2, GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: fc102f9fe8436bee9826789629a3ba6f test_case_3001.c: In function ‘main’: test_case_3001.c:10:5: warning: incompatible implicit declaration of built-in function ‘printf’ printf("%d", var4); ^ test_case_3001.c:1:5: internal compiler error: in vectorizable_reduction, at tree-vect-loop.c:4913 int main() { ^ 0x118d0c2 vectorizable_reduction(gimple_statement_base*, gimple_stmt_iterator*, gimple_statement_base**, _slp_tree*) ../../../source/gcc_492/gcc/tree-vect-loop.c:4913 0x116e79d vect_analyze_stmt(gimple_statement_base*, bool*, _slp_tree*) ../../../source/gcc_492/gcc/tree-vect-stmts.c:7106 0x117e50d vect_analyze_loop_operations ../../../source/gcc_492/gcc/tree-vect-loop.c:1505 0x117f5a3 vect_analyze_loop_2 ../../../source/gcc_492/gcc/tree-vect-loop.c:1766 0x117fdd3 vect_analyze_loop(loop*) ../../../source/gcc_492/gcc/tree-vect-loop.c:1864 0x11b536c vectorize_loops() ../../../source/gcc_492/gcc/tree-vectorizer.c:430 0x102fb8d tree_loop_vectorize ../../../source/gcc_492/gcc/tree-ssa-loop.c:154 0x102fcc4 execute ../../../source/gcc_492/gcc/tree-ssa-loop.c:189 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. ------------------------------- int main() { int var4 = 1; int var5 = -10; for (; var5 <= 0; ++var5) { int var6 = -1979310964; for (; var6 <= -1979310946; ++var6) { var4 = var5 - var4; } } printf("%d", var4); }