Bug#812245: ICE: in vect_get_vec_def_for_operand, at tree-vect-stmts.c:1379 with -O3
Package: gcc-6
Version: 6-20160117-1
Forwarded: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69328
With dpkg-buildflags set to -O3 (although I believe doko saw it with
normal flags on powerpc).
> sbuild (Debian sbuild) 0.67.0 (26 Dec 2015) on dl580gen9-02.hlinux
...
> Package: bochs
> Version: 2.6-5
...
> svga_cirrus.cc: In function 'void bitblt_rop_bkwd_src_and_dst(Bit8u*, const Bit8u*, int, int, int, int)':
> svga_cirrus.cc:3280:15: internal compiler error: in rewrite_use_nonlinear_expr, at tree-ssa-loop-ivopts.c:7086
> static void bitblt_rop_bkwd_##name( \
> ^
>
> svga_cirrus.cc:3317:1: note: in expansion of macro 'IMPLEMENT_BACKWARD_BITBLT'
> IMPLEMENT_BACKWARD_BITBLT(src_and_dst, *dst = (*src) & (*dst))
> ^~~~~~~~~~~~~~~~~~~~~~~~~
>
> 0xb9e800 rewrite_use_nonlinear_expr
> ../../src/gcc/tree-ssa-loop-ivopts.c:7086
> 0xb9e800 rewrite_use
> ../../src/gcc/tree-ssa-loop-ivopts.c:7347
> 0xb9e800 rewrite_uses
> ../../src/gcc/tree-ssa-loop-ivopts.c:7380
> 0xba60ac tree_ssa_iv_optimize_loop
> ../../src/gcc/tree-ssa-loop-ivopts.c:7726
> 0xba60ac tree_ssa_iv_optimize()
> ../../src/gcc/tree-ssa-loop-ivopts.c:7758
> 0xbba9f0 execute
> ../../src/gcc/tree-ssa-loop.c:554
> Please submit a full bug report,
> with preprocessed source if appropriate.
> Please include the complete backtrace with any bug report.
> See <file:///usr/share/doc/gcc-6/README.Bugs> for instructions.
> Preprocessed source stored into /tmp/cccXEakL.out file, please attach this to your bugreport.
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