[LLVMbugs] [Bug 3289] New: Assertion `LRegs.size() == 1 && "Can't handle this yet!"' failed.

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Tue Jan 6 17:51:57 PST 2009


           Summary: Assertion `LRegs.size() == 1 && "Can't handle this
                    yet!"' failed.
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: regehr at cs.utah.edu
                CC: llvmbugs at cs.uiuc.edu

Seen using r61781 on Ubuntu Hardy on x86.

Versions before and including 61492 are fine, later versions display this bug.

regehr at john-home:~/volatile/tmp110$ llvm-gcc -O2 small.c
cc1: ScheduleDAGRRList.cpp:713:
void<unnamed>::ScheduleDAGRRList::ListScheduleBottomUp(): Assertion
`LRegs.size() == 1 && "Can't handle this yet!"' failed.
small.c:18: internal compiler error: Aborted
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.

regehr at john-home:~/volatile/tmp110$ cat small.c

char safe_mul_func_uint8_t_u_u (char _ui1, char _ui2)
  return _ui1 * _ui2;

int g_54;

int func_66 (short p_68)
  int l_71 = 0x0ABB00F6L;
  if (func_33
      (1 ^ (safe_mod_ (safe_mul_func_uint8_t_u_u (p_68 * l_71, 1)), 1) ? 1
       : (g_54
          && 1) - safe_mod_ (safe_mul_func_uint8_t_u_u (p_68 * l_71,
                                                        func_40 (1))), 1))

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