[Bug target/66358] [5/6 Regression] [SH] ICE: in extract_constrain_insn, at recog.c:2232

[kkojima at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66358

--- Comment #5 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
Created attachment 35673
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35673&action=edit
original test case

My sh-elf compiler

COLLECT_GCC=../xsh-elf-combined/build/gcc/xgcc
Target: sh-unknown-elf
Configured with: /exp/ldroot/dodes/xsh-elf-combined/combined/configure
--target=sh-unknown-elf --disable-libssp --disable-libgomp
--disable-libstdcxx-pch --with-gnu-as --with-gnu-ld --enable-languages=c,c++
--disable-shared --with-newlib --disable-nls
--prefix=/exp/ldroot/dodes/xsh-elf-combined/install --with-headers=yes
--disable-gdbtk --with-mpfr=/opt2/i686-pc-linux-gnu
--with-gmp=/opt2/i686-pc-linux-gnu --without-libgloss
Thread model: single
gcc version 6.0.0 20150531 (experimental) (GCC) 

can reproduce it with -O2 -fpic -m4 -ml, though the bug looks a bit
fragile like as other RA related bugs.  I've attached unreduced test
case.  sh-elf compiler ICEs for this test case even with -O2 only here.