[LLVMbugs] [Bug 4770] New: msp430 backend: Assertion `MO.getOffset() == 0 && " No offsets allowed!"' failed.

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=4770

           Summary: msp430 backend: Assertion `MO.getOffset() == 0 && "No
                    offsets allowed!"' 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 on Ubuntu Hardy.

regehr at john-home:~/z/tinyos-2.x/apps/Blink/build/telosb/tmp1$ clang
-ccc-host-triple msp430-generic-generic -ccc-clang-archs msp430 -x c -S -w -O2
small.c
clang-cc: MSP430AsmPrinter.cpp:170:
void<unnamed>::MSP430AsmPrinter::printOperand(const llvm::MachineInstr*, int,
const char*): Assertion `MO.getOffset() == 0 && "No offsets allowed!"' failed.
0   clang-cc 0x0933f738
Stack dump:
0.      Program arguments:
/home/regehr/z/tmp/llvm-gcc-r79920-install/bin/../libexec/clang-cc -triple
msp430-generic-generic -S -disable-free -main-file-name small.c
--relocation-model static --disable-fp-elim --unwind-tables=0 --fmath-errno=1
-O2 -w -fdiagnostics-show-option -o small.s -x c small.c 
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'MSP430 Assembly Printer' on function '@bux'
clang: error: compiler command failed due to signal 6 (use -v to see
invocation)

regehr at john-home:~/z/tinyos-2.x/apps/Blink/build/telosb/tmp1$ clang -v

clang version 1.0 (http://llvm.org/svn/llvm-project/cfe/trunk 79920)
Target: i386-pc-linux-gnu
Thread model: posix

regehr at john-home:~/z/tinyos-2.x/apps/Blink/build/telosb/tmp1$ cat small.c

struct s
{
  int t0;
};

struct s arr[3];

void bar (char);

void bux (int dt)
{
  bar (1);
}

void baz (int num, int t0)
{
  struct s *timer = &arr[num];
  timer->t0 = t0;
}

void bar (char num)
{
  baz (num, 0);
}


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