[Bug optimization/12517] New: [tree-ssa] ICE in bsi_insert_on_edge_immediate

[falk at debian dot org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12517

           Summary: [tree-ssa] ICE in bsi_insert_on_edge_immediate
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: falk at debian dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: alphaev68-unknown-linux-gnu
  GCC host triplet: alphaev68-unknown-linux-gnu
GCC target triplet: alphaev68-unknown-linux-gnu

falk@juist:/tmp% cat bug.i
int f(void);
void g(int);
void h(int a, int b, int c)
{
    int i = f();

    if (b && (i & 4))
        g(i & 8 ? 0 : 1);
    if (a) {
        do {
            if (i & 8)
                g(0);
            if (i & 4)
                g(i ? 0 : 1);
        } while (--c);
    }
}
falk@juist:/tmp% gcc -c -O -v bug.i
Reading specs from
/usr/local/stow/gcc-tree-ssa-2003.10.05/bin/../lib/gcc/alphaev68-unknown-linux-gnu/3.5-tree-ssa/specs
Configured with: ../configure --disable-nls --enable-languages=c++
Thread model: posix
gcc version 3.5-tree-ssa 20031005 (merged 20030923)
 /usr/local/stow/gcc-tree-ssa-2003.10.05/bin/../libexec/gcc/alphaev68-unknown-linux-gnu/3.5-tree-ssa/cc1 -fpreprocessed bug.i -quiet -dumpbase bug.i -mcpu=ev67 -auxbase bug -O -version -o /tmp/ccO6alV4.s
GNU C version 3.5-tree-ssa 20031005 (merged 20030923) (alphaev68-unknown-linux-gnu)
        compiled by GNU C version 3.5-tree-ssa 20031005 (merged 20030923).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
bug.i: In function `h':

bug.i:4: internal compiler error: in bsi_insert_on_edge_immediate, at
tree-cfg.c:4065
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.