[Bug tree-optimization/30938] New: Bootstrap fails on x86_64 for -ftree-vectorize

["ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

-ftree-vectorize bootstrap segfaults on x86_64 in:

0x000000000098ecf9 in vect_is_simple_use (operand=0x2aaab01533c0,
loop_vinfo=0x156f0b0, def_stmt=0x7fff4264e488, 
    def=0x7fff4264e490, dt=0x7fff4264e488) at
../../gcc-svn/trunk/gcc/tree-vectorizer.c:1729
1729      switch (TREE_CODE (*def_stmt))
(gdb) bt
#0  0x000000000098ecf9 in vect_is_simple_use (operand=0x2aaab01533c0,
loop_vinfo=0x156f0b0, def_stmt=0x7fff4264e488, 
    def=0x7fff4264e490, dt=0x7fff4264e488) at
../../gcc-svn/trunk/gcc/tree-vectorizer.c:1729
#1  0x0000000000cf8b95 in vectorizable_call (stmt=0x2aaaaee70ed0, bsi=0x0,
vec_stmt=0x0)
    at ../../gcc-svn/trunk/gcc/tree-vect-transform.c:1847
#2  0x0000000000ce602d in vect_analyze_operations (loop_vinfo=0x156f0b0) at
../../gcc-svn/trunk/gcc/tree-vect-analyze.c:376
#3  0x0000000000ced78d in vect_analyze_loop (loop=0x156f480) at
../../gcc-svn/trunk/gcc/tree-vect-analyze.c:2727
#4  0x0000000000990d90 in vectorize_loops () at
../../gcc-svn/trunk/gcc/tree-vectorizer.c:2217
#5  0x0000000000919053 in tree_vectorize () at
../../gcc-svn/trunk/gcc/tree-ssa-loop.c:183

This failure happens when compiling i386.c, in function classify_argument.

To reproduce this failure, run make with BOOT_CFLAGS="-O2 -ftree-vectorize".


-- 
           Summary: Bootstrap fails on x86_64 for -ftree-vectorize
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: build
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ubizjak at gmail dot com
 GCC build triplet: x86_64-pc-linux-gnu
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30938