https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95142
Gabriel Ravier <gabravier at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |gabravier at gmail dot com --- Comment #1 from Gabriel Ravier <gabravier at gmail dot com> --- I can reproduce this on Fedora 32 with `sh-linux-gnu-gcc` (which uses GCC 9.2) : $ sh-linux-gnu-gcc -Ofast -m4 -mpretend-cmove -c ice_sh4.c ice_sh4.c: In function ‘call_create’: ice_sh4.c:48:1: error: unrecognizable insn: 48 | } | ^ (insn 26 25 27 2 (parallel [ (set (reg:SI 147 t) (ge:SI (reg/v:SF 170 [ size_1 ]) (reg/v:SF 167 [ size_0 ]))) (clobber (reg:SI 155 fpscr1)) (use (reg:SI 154 fpscr0)) ]) "ice_sh4.c":41:29 -1 (nil)) during RTL pass: vregs ice_sh4.c:48:1: internal compiler error: in extract_insn, at recog.c:2310 0x7f37befd0041 __libc_start_main ../csu/libc-start.c:308 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://bugzilla.redhat.com/bugzilla/> for instructions. The bug is not reproducible, so it is likely a hardware or OS problem. $ sh-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/usr/bin/sh-linux-gnu-gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/sh-linux-gnu/9/lto-wrapper Target: sh-linux-gnu Configured with: ../gcc-9.2.1-20190827/configure --bindir=/usr/bin --build=x86_64-redhat-linux-gnu --datadir=/usr/share --disable-decimal-float --disable-dependency-tracking --disable-gold --disable-libgcj --disable-libgomp --disable-libmpx --disable-libquadmath --disable-libssp --disable-libunwind-exceptions --disable-shared --disable-silent-rules --disable-sjlj-exceptions --disable-threads --with-ld=/usr/bin/sh-linux-gnu-ld --enable-__cxa_atexit --enable-checking=release --enable-gnu-unique-object --enable-initfini-array --enable-languages=c,c++ --enable-linker-build-id --enable-lto --enable-nls --enable-obsolete --enable-plugin --enable-targets=all --exec-prefix=/usr --host=x86_64-redhat-linux-gnu --includedir=/usr/include --infodir=/usr/share/info --libexecdir=/usr/libexec --localstatedir=/var --mandir=/usr/share/man --prefix=/usr --program-prefix=sh-linux-gnu- --sbindir=/usr/sbin --sharedstatedir=/var/lib --sysconfdir=/etc --target=sh-linux-gnu --with-bugurl=http://bugzilla.redhat.com/bugzilla/ --with-gcc-major-version-only --with-isl --with-newlib --with-plugin-ld=/usr/bin/sh-linux-gnu-ld --with-sysroot=/usr/sh-linux-gnu/sys-root --with-system-libunwind --with-system-zlib --without-headers --with-multilib-list=m1,m2,m2e,m2a,m2a-single,m4,m4-single,m4-single-only,m4-nofpu --with-linker-hash-style=gnu Thread model: single gcc version 9.2.1 20190827 (Red Hat Cross 9.2.1-3) (GCC) Reproducing it requires `-m4` here (doesn't work with nothing or another architecture like `-m3`), so it is most likely a bug specific to SH4-specific code.