On 29 November 2016 at 20:38, Uros Bizjak <ubiz...@gmail.com> wrote: >> 2016-11-26 Segher Boessenkool <seg...@kernel.crashing.org> >> >> * combine.c (change_zero_ext): Also handle extends from a subreg >> to a mode bigger than that of the operand of the subreg. > > This patch introduced: > > FAIL: gcc.target/i386/pr44578.c (internal compiler error) > > on i686 (or x86_64 32bit multi-lib). > > ./cc1 -O2 -mtune=athlon64 -m32 -quiet pr44578.c > pr44578.c: In function ‘test’: > pr44578.c:18:1: internal compiler error: in gen_rtx_SUBREG, at emit-rtl.c:908 > } > ^ > 0x81493b gen_rtx_SUBREG(machine_mode, rtx_def*, int) > /home/uros/gcc-svn/trunk/gcc/emit-rtl.c:908 > 0x122609f change_zero_ext > /home/uros/gcc-svn/trunk/gcc/combine.c:11260 > 0x1226207 recog_for_combine > /home/uros/gcc-svn/trunk/gcc/combine.c:11346 > 0x1236db3 try_combine > /home/uros/gcc-svn/trunk/gcc/combine.c:3501 > 0x123a3e0 combine_instructions > /home/uros/gcc-svn/trunk/gcc/combine.c:1265 > 0x123a3e0 rest_of_handle_combine > /home/uros/gcc-svn/trunk/gcc/combine.c:14581 > 0x123a3e0 execute > /home/uros/gcc-svn/trunk/gcc/combine.c:14626 > > Uros.
Hi, I'm seeing a similar error on aarch64: FAIL: gcc.target/aarch64/advsimd-intrinsics/vduph_lane.c -O1 (internal compiler error) with the same backtrace. Christophe
