https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67474
Bug ID: 67474 Summary: [6 regression] tree-vect-loop.c:2759:1: error: insn does not satisfy its constraints breaks ARM bootstrap Product: gcc Version: 6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap Assignee: unassigned at gcc dot gnu.org Reporter: mikpelinux at gmail dot com Target Milestone: --- Attempting to bootstrap gcc-6-20150906 on armv7l w/ hard float fails with: /mnt/scratch/gcc-6-20150906/gcc/tree-vect-loop.c: In function 'gimple_statement_base* vect_is_simple_reduction_1(loop_vec_info, gimple, bool, bool*, bool, bool)': /mnt/scratch/gcc-6-20150906/gcc/tree-vect-loop.c:2759:1: error: insn does not satisfy its constraints: } ^ (insn 1036 3379 1037 177 (parallel [ (set (reg/v/f:SI 3 r3 [orig:110 def1 ] [110]) (and:SI (ne:SI (reg/v/f:SI 3 r3 [orig:110 def1 ] [110]) (const_int 0 [0])) (eq:SI (reg/v/f:SI 3 r3 [orig:110 def1 ] [110]) (reg/v/f:SI 5 r5 [orig:251 phi ] [251])))) (clobber (reg:CC 100 cc)) ]) /mnt/scratch/gcc-6-20150906/gcc/tree-vect-loop.c:2706 260 {*and_scc_scc_nodom} (nil)) /mnt/scratch/gcc-6-20150906/gcc/tree-vect-loop.c:2759:1: internal compiler error: in extract_constrain_insn, at recog.c:2200 0x76dcbb _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) /mnt/scratch/gcc-6-20150906/gcc/rtl-error.c:109 0x76dd27 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) /mnt/scratch/gcc-6-20150906/gcc/rtl-error.c:120 0x7169b7 extract_constrain_insn(rtx_insn*) /mnt/scratch/gcc-6-20150906/gcc/recog.c:2200 0x6e72fb reload_cse_simplify_operands /mnt/scratch/gcc-6-20150906/gcc/postreload.c:408 0x6e699b reload_cse_simplify /mnt/scratch/gcc-6-20150906/gcc/postreload.c:194 0x6e6a87 reload_cse_regs_1 /mnt/scratch/gcc-6-20150906/gcc/postreload.c:233 0x6e6523 reload_cse_regs /mnt/scratch/gcc-6-20150906/gcc/postreload.c:81 0x6ed56b execute /mnt/scratch/gcc-6-20150906/gcc/postreload.c:2350 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. make[3]: *** [tree-vect-loop.o] Error 1 make[3]: *** Waiting for unfinished jobs.... rm fsf-funding.pod gcov.pod cpp.pod gfdl.pod gpl.pod gcc.pod gcov-tool.pod make[3]: Leaving directory `/mnt/scratch/objdir6/gcc' make[2]: *** [all-stage2-gcc] Error 2 make[2]: Leaving directory `/mnt/scratch/objdir6' make[1]: *** [stage2-bubble] Error 2 make[1]: Leaving directory `/mnt/scratch/objdir6' make: *** [bootstrap] Error 2 The previous weekly snapshot gcc-6-20150830 bootstrapped fine. Configuration: /mnt/scratch/gcc-6-20150906/configure --prefix=/mnt/scratch/install6 --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,ada --enable-initfini-array --disable-lto --disable-plugin --disable-libmudflap --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --disable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --without-isl --without-cloog --disable-sjlj-exceptions --with-arch=armv7-a --with-tune=cortex-a9 --with-float=hard --with-fpu=vfpv3-d16 --build=armv7l-unknown-linux-gnueabi --with-gmp=/home/mikpe/pkgs/linux-armv7l/gmp-6.0.0 --with-mpfr=/home/mikpe/pkgs/linux-armv7l/mpfr-3.1.3 --with-mpc=/home/mikpe/pkgs/linux-armv7l/mpc-1.0.3