[Bug tree-optimization/56195] New: Error: incorrect register `%rdi' used with `l' suffix (at -O2)

["antoine.balestrat at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56195

             Bug #: 56195
           Summary: Error: incorrect register `%rdi' used with `l' suffix
                    (at -O2)
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: antoine.balestrat@gmail.com


Using GCC 4.8.0 as of 20130203 :

$ xgcc -v
Using built-in specs.
COLLECT_GCC=/home/merkil/gcc/dist/bin/gcc
COLLECT_LTO_WRAPPER=/home/merkil/gcc/dist/libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../srcdir/configure CFLAGS='-O2 -pipe' CXXFLAGS='-O2 -pipe'
--enable-languages=c --prefix=/home/merkil/gcc/dist
Thread model: posix
gcc version 4.8.0 20130203 (experimental) (GCC) 

$ cat reg.c
int i, a, t, b, c, d, e, f, j, *h;

void fn(void)
{
    if(b)
    {
        int *p, *q;
        char g;

        if(f++)
            for(;; e++);
lbl:
        for(b = 0; b < 2; b++)
            t /= d + 1 ? : i || a < c < (d = f) ? : 1 | (j = 2);

        *p = g >= *q ^ c != a ^ *p;

        if(!e)
        {
            q = p;
            goto lbl;
        }
    }

    if(h++)
        goto lbl;
}

$ xgcc -O2 reg.c
{standard input}: Assembler messages:
{standard input}:112: Error: incorrect register `%rdi' used with `l' suffix