#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ printf(char *, ...);
void usage(const char *prog) {
  printf("Time how long it takes to append into a file and fdatasync it.\n");
  printf("The results are printed in seconds total for all the writes.\n");
  printf("\n");
  printf("Usage: %s [options]\n", prog);
  printf("  --count=NUM      "
         "Number of sequential appends to measure [default 1000]\n");
  printf("  --direct=yes|no  "
         "Whether to use O_DIRECT [default no]\n");
  printf("  --file=NAME      "
         "File to create/truncate and write into [default bench.dat]\n");
  printf("  --help           "
         "Print this help message and exit\n");
  printf("  --offset=BYTES   "
         "Number of bytes to skip at start of file [default 0]\n");
  printf("  --size=BYTES     "
         "Number of bytes to append in each iteration [default 1]\n");
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
lea    0xedd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf0f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf3d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%rsi
lea    0xf2d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf34(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf71(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf9c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xfdd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0x1004(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0x103f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<usage>:
push   %rbx
mov    %rdi,%rbx
lea    0xeda(%rip),%rdi
call   1040 <puts@plt>
lea    0xf0d(%rip),%rdi
call   1040 <puts@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0xea3(%rip),%rdi
mov    %rbx,%rsi
xor    %eax,%eax
call   1050 <printf@plt>
lea    0xf23(%rip),%rdi
call   1040 <puts@plt>
lea    0xf61(%rip),%rdi
call   1040 <puts@plt>
lea    0xf8d(%rip),%rdi
call   1040 <puts@plt>
lea    0xfcf(%rip),%rdi
call   1040 <puts@plt>
lea    0xff7(%rip),%rdi
call   1040 <puts@plt>
lea    0x1033(%rip),%rdi
pop    %rbx
jmp    1040 <puts@plt>

LLVM IR (-O0):
@.str = [64 x i8] c"Time how long it takes to append into a file and fdatasync it.\0A\00"
@.str.1 = [62 x i8] c"The results are printed in seconds total for all the writes.\0A\00"
@.str.2 = [2 x i8] c"\0A\00"
@.str.3 = [21 x i8] c"Usage: %s [options]\0A\00"
@.str.4 = [75 x i8] c" --count=NUM Number of sequential appends to measure [default 1000]\0A\00"
@.str.5 = [57 x i8] c" --direct=yes|no Whether to use O_DIRECT [default no]\0A\00"
@.str.6 = [79 x i8] c" --file=NAME File to create/truncate and write into [default bench.dat]\0A\00"
@.str.7 = [53 x i8] c" --help Print this help message and exit\0A\00"
@.str.8 = [73 x i8] c" --offset=BYTES Number of bytes to skip at start of file [default 0]\0A\00"
@.str.9 = [76 x i8] c" --size=BYTES Number of bytes to append in each iteration [default 1]\0A\00"
define void @usage(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([64 x i8], [64 x i8]* @.str, i64 0, i64 0))
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([62 x i8], [62 x i8]* @.str.1, i64 0, i64 0))
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%6 = load i8*, i8** %2
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.3, i64 0, i64 0), i8* %6)
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([75 x i8], [75 x i8]* @.str.4, i64 0, i64 0))
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([57 x i8], [57 x i8]* @.str.5, i64 0, i64 0))
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([79 x i8], [79 x i8]* @.str.6, i64 0, i64 0))
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([53 x i8], [53 x i8]* @.str.7, i64 0, i64 0))
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([73 x i8], [73 x i8]* @.str.8, i64 0, i64 0))
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([76 x i8], [76 x i8]* @.str.9, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str.3 = [21 x i8] c"Usage: %s [options]\0A\00"
@str = [63 x i8] c"Time how long it takes to append into a file and fdatasync it.\00"
@str.10 = [61 x i8] c"The results are printed in seconds total for all the writes.\00"
@str.11 = [74 x i8] c" --count=NUM Number of sequential appends to measure [default 1000]\00"
@str.12 = [56 x i8] c" --direct=yes|no Whether to use O_DIRECT [default no]\00"
@str.13 = [78 x i8] c" --file=NAME File to create/truncate and write into [default bench.dat]\00"
@str.14 = [52 x i8] c" --help Print this help message and exit\00"
@str.15 = [72 x i8] c" --offset=BYTES Number of bytes to skip at start of file [default 0]\00"
@str.16 = [75 x i8] c" --size=BYTES Number of bytes to append in each iteration [default 1]\00"
define void @usage(i8* %0) {
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([63 x i8], [63 x i8]* @str, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([61 x i8], [61 x i8]* @str.10, i64 0, i64 0))
%4 = tail call i32 @putchar(i32 10)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @.str.3, i64 0, i64 0), i8* %0)
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([74 x i8], [74 x i8]* @str.11, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([56 x i8], [56 x i8]* @str.12, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([78 x i8], [78 x i8]* @str.13, i64 0, i64 0))
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([52 x i8], [52 x i8]* @str.14, i64 0, i64 0))
%10 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([72 x i8], [72 x i8]* @str.15, i64 0, i64 0))
%11 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([75 x i8], [75 x i8]* @str.16, i64 0, i64 0))
ret void
}