add support for .asciz, and enable it by default.  If your target assemblerdoesn't support .asciz, just set AscizDirective to null in your asmprinter.
This compiles C strings to:

l1__2E_str_1:                           ; '.str_1'
        .asciz  "foo"

instead of:

l1__2E_str_1:                           ; '.str_1'
        .ascii  "foo\000"

llvm-svn: 24272

llvm-svn: 22838

llvm-svn: 22696

llvm-svn: 22053

llvm-svn: 21420

(which may or be function pointers) in the asmprinter. For the moment,
this changes nothing, except the IA64 backend which can use this to write:

  data8.ua  @fptr(blah__blah__mangled_function_name)

  (by setting FunctionAddrPrefix/Suffix to "@fptr(" / ")")

llvm-svn: 21024

prints:

getelementptr (int* %A, int -1)

as: "(A) - 4" instead of "(A) + 18446744073709551612", which makes the
assembler much happier.

This fixes test/Regression/CodeGen/X86/2005-02-14-IllegalAssembler.ll,
and Benchmarks/Prolangs-C/cdecl with LLC on X86.

llvm-svn: 20183

llvm-svn: 20026

llvm-svn: 19388

PR449

llvm-svn: 18306

llvm-svn: 17055

with emitting .xwords when not on an 8-byte boundary (.xword 0 is not the
same as 8 .byte 0's).  Because we do not know when or when we are not aligned,
just emit bytes like the old V9 asmprinter did.

llvm-svn: 16006

llvm-svn: 15897

llvm-svn: 15894

llvm-svn: 15888

llvm-svn: 15880

llvm-svn: 15870

llvm-svn: 15868

hear it for ".".

llvm-svn: 15863

llvm-svn: 15845

llvm-svn: 15838