-fembed-bitcode

gistfile1.txt

$ /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -o test test.c -fembed-bitcode

$ otool -l test | grep -A 20 -i llvm
  segname __LLVM
   vmaddr 0x0000000100002000
   vmsize 0x0000000000002000
  fileoff 8192
 filesize 8192
  maxprot 0x00000007
 initprot 0x00000003
   nsects 1
    flags 0x4
Section
  sectname __bundle
   segname __LLVM
      addr 0x0000000100002000
      size 0x0000000000001255
    offset 8192
     align 2^0 (1)
    reloff 0
    nreloc 0
     flags 0x00000000
 reserved1 0
 reserved2 0
 
 
$ segedit file --extract __LLVM __bundle test.bc.xar
$ file test.bc.xar
test.bc.xar: xar archive - version 1

$ xar -x -f test.bc.xar
$ file 1
1: LLVM bit-code object x86_64
$ llvm-dis 1
$ head 1.ll
; ModuleID = '1'
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.10.0"

@.str = private unnamed_addr constant [26 x i8] c"test2 : made it this far\0A\00", align 1
@.str1 = private unnamed_addr constant [16 x i8] c"mast_inject_all\00", section "llvm.metadata"
@.str2 = private unnamed_addr constant [7 x i8] c"test.c\00", section "llvm.metadata"
@.str3 = private unnamed_addr constant [7 x i8] c"First\0A\00", align 1
@.str4 = private unnamed_addr constant [8 x i8] c"Second\0A\00", align 1
@.str5 = private unnamed_addr constant [7 x i8] c"Third\0A\00", align 1