void usage(v) int v;
{
  printf(
      "Usage: pp <input> -[cdeilotuv?]\n%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
      "   -c 0|1|2|3|4|5|6 Enable the desired configuration option:\n",
      "              0 -> Replace macro arguments in strings.\n",
      "              1 -> Expand macros inside #pragma asm.\n",
      "              2 -> Allow recursive comments.\n",
      "              3 -> Rescan macro expansions for directives.\n",
      "              4 -> Allow macro defs and undefs to stack/unstack.\n",
      "              5 -> Perform Trigraph input character translation.\n",
      "              6 -> Permit C++ style \"//\" eol comments.\n",
      "   -d s[=v] Define symbol 
 to have value <v> (default 1).\n",
      "   -e       Don't abort on error.\n",
      "   -i       Set path for #include files.\n",
      "   -l a|l|n Specify #line output mode (abbrev/long/none).\n",
      "   -o file  Specify output file name.\n",
      "   -t str   Add/remove LETTER chars (Accc or Rccc).\n",
      "   -u s     Undefine an initial symbol.\n",
      "   -v       Verbose mode toggle.\n",
      "   -?       Output this message.\n",
      " Output file, if not specified, is <input>.pp\n");
  exit(v);
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
sub    $0xa8,%rsp
mov    %edi,-0x2c(%rbp)
lea    0xec2(%rip),%rdi
lea    0xf00(%rip),%rsi
lea    0xf37(%rip),%rdx
lea    0xf68(%rip),%rcx
lea    0xf97(%rip),%r8
lea    0xfbe(%rip),%r9
lea    0xff3(%rip),%rax
mov    %rax,-0x60(%rbp)
lea    0x102a(%rip),%rax
mov    %rax,-0x58(%rbp)
lea    0x1061(%rip),%rax
mov    %rax,-0x50(%rbp)
lea    0x108e(%rip),%rax
mov    %rax,-0x48(%rbp)
lea    0x10c1(%rip),%rax
mov    %rax,-0x40(%rbp)
lea    0x10d9(%rip),%r13
lea    0x10fc(%rip),%r12
lea    0x1130(%rip),%r15
lea    0x1150(%rip),%r14
lea    0x117e(%rip),%rbx
lea    0x11a0(%rip),%r11
lea    0x11bb(%rip),%r10
lea    0x11d6(%rip),%rax
mov    %rax,-0x38(%rbp)
mov    -0x60(%rbp),%rax
mov    %rax,(%rsp)
mov    -0x58(%rbp),%rax
mov    %rax,0x8(%rsp)
mov    -0x50(%rbp),%rax
mov    %rax,0x10(%rsp)
mov    -0x48(%rbp),%rax
mov    %rax,0x18(%rsp)
mov    -0x40(%rbp),%rax
mov    %rax,0x20(%rsp)
mov    -0x38(%rbp),%rax
mov    %r13,0x28(%rsp)
mov    %r12,0x30(%rsp)
mov    %r15,0x38(%rsp)
mov    %r14,0x40(%rsp)
mov    %rbx,0x48(%rsp)
mov    %r11,0x50(%rsp)
mov    %r10,0x58(%rsp)
mov    %rax,0x60(%rsp)
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x2c(%rbp),%edi
call   1040 <exit@plt>

x86 assembly (clang, -O2):
<usage>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
mov    %edi,%ebx
sub    $0x8,%rsp
lea    0x126e(%rip),%r15
lea    0x1245(%rip),%r12
lea    0x121c(%rip),%r13
lea    0x11ec(%rip),%r14
lea    0x11b0(%rip),%r11
lea    0x1182(%rip),%r10
lea    0x1140(%rip),%rbp
lea    0xe97(%rip),%rdi
lea    0xed5(%rip),%rsi
lea    0xf0c(%rip),%rdx
lea    0xf3d(%rip),%rcx
lea    0xf6c(%rip),%r8
lea    0xf93(%rip),%r9
xor    %eax,%eax
push   %r15
push   %r12
push   %r13
push   %r14
push   %r11
push   %r10
push   %rbp
lea    0x10d6(%rip),%rbp
push   %rbp
lea    0x10ab(%rip),%rbp
push   %rbp
lea    0x1065(%rip),%rbp
push   %rbp
lea    0x1025(%rip),%rbp
push   %rbp
lea    0xfdb(%rip),%rbp
push   %rbp
lea    0xf91(%rip),%rbp
push   %rbp
call   1030 <printf@plt>
add    $0x70,%rsp
mov    %ebx,%edi
call   1040 <exit@plt>

LLVM IR (-O0):
@.str = [69 x i8] c"Usage: pp <input> -[cdeilotuv?]\0A%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\00"
@.str.1 = [62 x i8] c" -c 0|1|2|3|4|5|6 Enable the desired configuration option:\0A\00"
@.str.2 = [56 x i8] c" 0 -> Replace macro arguments in strings.\0A\00"
@.str.3 = [54 x i8] c" 1 -> Expand macros inside #pragma asm.\0A\00"
@.str.4 = [46 x i8] c" 2 -> Allow recursive comments.\0A\00"
@.str.5 = [60 x i8] c" 3 -> Rescan macro expansions for directives.\0A\00"
@.str.6 = [66 x i8] c" 4 -> Allow macro defs and undefs to stack/unstack.\0A\00"
@.str.7 = [66 x i8] c" 5 -> Perform Trigraph input character translation.\0A\00"
@.str.8 = [56 x i8] c" 6 -> Permit C++ style \22//\22 eol comments.\0A\00"
@.str.9 = [62 x i8] c" -d s[=v] Define symbol 
 to have value <v> (default 1).\0A\00"
@.str.10 = [35 x i8] c" -e Don't abort on error.\0A\00"
@.str.11 = [42 x i8] c" -i Set path for #include files.\0A\00"
@.str.12 = [59 x i8] c" -l a|l|n Specify #line output mode (abbrev/long/none).\0A\00"
@.str.13 = [39 x i8] c" -o file Specify output file name.\0A\00"
@.str.14 = [53 x i8] c" -t str Add/remove LETTER chars (Accc or Rccc).\0A\00"
@.str.15 = [41 x i8] c" -u s Undefine an initial symbol.\0A\00"
@.str.16 = [34 x i8] c" -v Verbose mode toggle.\0A\00"
@.str.17 = [34 x i8] c" -? Output this message.\0A\00"
@.str.18 = [47 x i8] c" Output file, if not specified, is <input>.pp\0A\00"
define void @usage(i32 %0) {
%2 = alloca i32
store i32 %0, i32* %2
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([62 x i8], [62 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([56 x i8], [56 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([54 x i8], [54 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str.4, i64 0, i64 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @.str.5, i64 0, i64 0), i8* getelementptr inbounds ([66 x i8], [66 x i8]* @.str.6, i64 0, i64 0), i8* getelementptr inbounds ([66 x i8], [66 x i8]* @.str.7, i64 0, i64 0), i8* getelementptr inbounds ([56 x i8], [56 x i8]* @.str.8, i64 0, i64 0), i8* getelementptr inbounds ([62 x i8], [62 x i8]* @.str.9, i64 0, i64 0), i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.10, i64 0, i64 0), i8* getelementptr inbounds ([42 x i8], [42 x i8]* @.str.11, i64 0, i64 0), i8* getelementptr inbounds ([59 x i8], [59 x i8]* @.str.12, i64 0, i64 0), i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str.13, i64 0, i64 0), i8* getelementptr inbounds ([53 x i8], [53 x i8]* @.str.14, i64 0, i64 0), i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.15, i64 0, i64 0), i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.16, i64 0, i64 0), i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.17, i64 0, i64 0), i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str.18, i64 0, i64 0))
%4 = load i32, i32* %2
unreachable
}

LLVM IR (-O2):
@.str = [69 x i8] c"Usage: pp <input> -[cdeilotuv?]\0A%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\00"
@.str.1 = [62 x i8] c" -c 0|1|2|3|4|5|6 Enable the desired configuration option:\0A\00"
@.str.2 = [56 x i8] c" 0 -> Replace macro arguments in strings.\0A\00"
@.str.3 = [54 x i8] c" 1 -> Expand macros inside #pragma asm.\0A\00"
@.str.4 = [46 x i8] c" 2 -> Allow recursive comments.\0A\00"
@.str.5 = [60 x i8] c" 3 -> Rescan macro expansions for directives.\0A\00"
@.str.6 = [66 x i8] c" 4 -> Allow macro defs and undefs to stack/unstack.\0A\00"
@.str.7 = [66 x i8] c" 5 -> Perform Trigraph input character translation.\0A\00"
@.str.8 = [56 x i8] c" 6 -> Permit C++ style \22//\22 eol comments.\0A\00"
@.str.9 = [62 x i8] c" -d s[=v] Define symbol 
 to have value <v> (default 1).\0A\00"
@.str.10 = [35 x i8] c" -e Don't abort on error.\0A\00"
@.str.11 = [42 x i8] c" -i Set path for #include files.\0A\00"
@.str.12 = [59 x i8] c" -l a|l|n Specify #line output mode (abbrev/long/none).\0A\00"
@.str.13 = [39 x i8] c" -o file Specify output file name.\0A\00"
@.str.14 = [53 x i8] c" -t str Add/remove LETTER chars (Accc or Rccc).\0A\00"
@.str.15 = [41 x i8] c" -u s Undefine an initial symbol.\0A\00"
@.str.16 = [34 x i8] c" -v Verbose mode toggle.\0A\00"
@.str.17 = [34 x i8] c" -? Output this message.\0A\00"
@.str.18 = [47 x i8] c" Output file, if not specified, is <input>.pp\0A\00"
define void @usage(i32 %0) {
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([62 x i8], [62 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([56 x i8], [56 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([54 x i8], [54 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str.4, i64 0, i64 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @.str.5, i64 0, i64 0), i8* getelementptr inbounds ([66 x i8], [66 x i8]* @.str.6, i64 0, i64 0), i8* getelementptr inbounds ([66 x i8], [66 x i8]* @.str.7, i64 0, i64 0), i8* getelementptr inbounds ([56 x i8], [56 x i8]* @.str.8, i64 0, i64 0), i8* getelementptr inbounds ([62 x i8], [62 x i8]* @.str.9, i64 0, i64 0), i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.10, i64 0, i64 0), i8* getelementptr inbounds ([42 x i8], [42 x i8]* @.str.11, i64 0, i64 0), i8* getelementptr inbounds ([59 x i8], [59 x i8]* @.str.12, i64 0, i64 0), i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str.13, i64 0, i64 0), i8* getelementptr inbounds ([53 x i8], [53 x i8]* @.str.14, i64 0, i64 0), i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.15, i64 0, i64 0), i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.16, i64 0, i64 0), i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.17, i64 0, i64 0), i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str.18, i64 0, i64 0))
tail call void @exit(i32 %0)
unreachable
}