#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 */
double benchmark_image_transcode(int, char *);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ printf(char *, ...);
int main(int argc, char **argv) {
  if (argc != 2) {
    printf("missing argument: need a path to an image\n");
    exit(1);
  }
  printf("=> benchmark %s: %.2fms\n", argv[1],
         benchmark_image_transcode(20, argv[1]));
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %edi,-0x4(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x4(%rbp)
je     1161 <main+0x31>
lea    0xeb0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x1,%edi
call   1040 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rax
mov    %rax,-0x18(%rbp)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rsi
mov    $0x14,%edi
call   1050 <benchmark_image_transcode@plt>
mov    -0x18(%rbp),%rsi
lea    0xea1(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
cmp    $0x2,%edi
jne    116c <main+0x2c>
mov    0x8(%rsi),%rbx
mov    $0x14,%edi
mov    %rbx,%rsi
call   1060 <benchmark_image_transcode@plt>
lea    0xea2(%rip),%rdi
mov    %rbx,%rsi
mov    $0x1,%al
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret
lea    0xea6(%rip),%rdi
call   1030 <puts@plt>
mov    $0x1,%edi
call   1050 <exit@plt>

LLVM IR (-O0):
@.str = [43 x i8] c"missing argument: need a path to an image\0A\00"
@.str.1 = [25 x i8] c"=> benchmark %s: %.2fms\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i8**
store i32 %0, i32* %3
store i8** %1, i8*** %4
%5 = load i32, i32* %3
%6 = icmp ne i32 %5, 2
br i1 %6, label %7, label %10
7: ; preds = %2
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([43 x i8], [43 x i8]* @.str, i64 0, i64 0))
%9 = call i32 @exit(i32 1)
unreachable
10: ; preds = %2
%11 = load i8**, i8*** %4
%12 = getelementptr inbounds i8*, i8** %11, i64 1
%13 = load i8*, i8** %12
%14 = load i8**, i8*** %4
%15 = getelementptr inbounds i8*, i8** %14, i64 1
%16 = load i8*, i8** %15
%17 = call double @benchmark_image_transcode(i32 20, i8* %16)
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.1, i64 0, i64 0), i8* %13, double %17)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [25 x i8] c"=> benchmark %s: %.2fms\0A\00"
@str = [42 x i8] c"missing argument: need a path to an image\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %7, label %4
4: ; preds = %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([42 x i8], [42 x i8]* @str, i64 0, i64 0))
%6 = tail call i32 @exit(i32 1)
unreachable
7: ; preds = %2
%8 = getelementptr inbounds i8*, i8** %1, i64 1
%9 = load i8*, i8** %8
%10 = tail call double @benchmark_image_transcode(i32 20, i8* %9)
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str.1, i64 0, i64 0), i8* %9, double %10)
ret i32 0
}