[Bug target/38900] New: ICE: unable to find a register to spill

["d dot g dot gorbachev at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

gcc -S -O1 -foptimize-sibling-calls bug.c

bug.c: In function 'f':
bug.c:9: error: unable to find a register to spill in class 'CREG'
bug.c:9: error: this is the insn:
(call_insn/j 11 9 12 2 bug.c:8 (call (mem:QI (reg/f:SI 3 bx [59]) [0 S1 A8])
        (const_int 0 [0x0])) 468 {*sibcall_1} (expr_list:REG_DEAD (reg/f:SI 3
bx [59])
        (expr_list:REG_DEAD (reg:SI 2 cx)
            (nil)))
    (expr_list:REG_DEP_TRUE (use (reg:SI 2 cx))
        (nil)))
bug.c:9: internal compiler error: in spill_failure, at reload1.c:2093


-- 
           Summary: ICE: unable to find a register to spill
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: d dot g dot gorbachev at gmail dot com
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i386-pc-mingw32


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38900