[Bug target/50832] New: Strange ix86_attr_length_immediate_default

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50832

             Bug #: 50832
           Summary: Strange ix86_attr_length_immediate_default
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: hjl.to...@gmail.com
                CC: ubiz...@gmail.com


ix86_attr_length_immediate_default has

int
ix86_attr_length_immediate_default (rtx insn, bool shortform)
{
  int len = 0;
  int i;
  extract_insn_cached (insn);
  for (i = recog_data.n_operands - 1; i >= 0; --i)
    if (CONSTANT_P (recog_data.operand[i]))
      {     
        enum attr_mode mode = get_attr_mode (insn);

        gcc_assert (!len);
        ...
      }

When there is a match, we always get assert.