#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 */
typedef int uint8_t;

/* Variables and functions */
int /*<<< orphan*/ SHA1(char *, int /*<<< orphan*/, int *);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ strlen(char *);
int main() {
  int i;
  char data[] = "Hello";
  uint8_t md[32];
  SHA1(data, strlen(data), md);
  for (i = 0; i < 20; i++) {
    printf("%02x", md[i]);
  }
  printf("\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0xa0,%rsp
movl   $0x0,-0x4(%rbp)
mov    0xeb8(%rip),%eax
mov    %eax,-0xe(%rbp)
mov    0xeb2(%rip),%ax
mov    %ax,-0xa(%rbp)
lea    -0xe(%rbp),%rax
mov    %rax,-0x98(%rbp)
lea    -0xe(%rbp),%rdi
call   1030 <strlen@plt>
mov    -0x98(%rbp),%rdi
mov    %eax,%esi
lea    -0x90(%rbp),%rdx
call   1050 <SHA1@plt>
movl   $0x0,-0x8(%rbp)
cmpl   $0x14,-0x8(%rbp)
jge    11b7 <main+0x87>
movslq -0x8(%rbp),%rax
mov    -0x90(%rbp,%rax,4),%esi
lea    0xe64(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1186 <main+0x56>
lea    0xe4d(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0xa0,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x90,%rsp
movw   $0x6f,0xc(%rsp)
movl   $0x6c6c6548,0x8(%rsp)
6c
lea    0x8(%rsp),%rbx
mov    %rbx,%rdi
call   1040 <strlen@plt>
lea    0x10(%rsp),%rdx
mov    %rbx,%rdi
mov    %eax,%esi
call   1060 <SHA1@plt>
mov    0x10(%rsp),%esi
lea    0xe88(%rip),%rbx
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x14(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x18(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x1c(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x20(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x24(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x28(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x2c(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x30(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x34(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x38(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x3c(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x40(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x44(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x48(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x4c(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x50(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x54(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x58(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0x5c(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x90,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@__const.main.data = [6 x i8] c"Hello\00"
@.str = [5 x i8] c"%02x\00"
@.str.1 = [2 x i8] c"\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca [6 x i8]
%4 = alloca [32 x i32]
store i32 0, i32* %1
%5 = bitcast [6 x i8]* %3 to i8*
%6 = getelementptr inbounds [6 x i8], [6 x i8]* %3, i64 0, i64 0
%7 = getelementptr inbounds [6 x i8], [6 x i8]* %3, i64 0, i64 0
%8 = call i32 @strlen(i8* %7)
%9 = getelementptr inbounds [32 x i32], [32 x i32]* %4, i64 0, i64 0
%10 = call i32 @SHA1(i8* %6, i32 %8, i32* %9)
store i32 0, i32* %2
br label %11
11: ; preds = %20, %0
%12 = load i32, i32* %2
%13 = icmp slt i32 %12, 20
br i1 %13, label %14, label %23
14: ; preds = %11
%15 = load i32, i32* %2
%16 = sext i32 %15 to i64
%17 = getelementptr inbounds [32 x i32], [32 x i32]* %4, i64 0, i64 %16
%18 = load i32, i32* %17
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %18)
br label %20
20: ; preds = %14
%21 = load i32, i32* %2
%22 = add nsw i32 %21, 1
store i32 %22, i32* %2
br label %11
23: ; preds = %11
%24 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@__const.main.data = [6 x i8] c"Hello\00"
@.str = [5 x i8] c"%02x\00"
define i32 @main() {
%1 = alloca [6 x i8]
%2 = alloca [32 x i32]
%3 = getelementptr inbounds [6 x i8], [6 x i8]* %1, i64 0, i64 0
%4 = bitcast [32 x i32]* %2 to i8*
%5 = call i32 @strlen(i8* %3)
%6 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 0
%7 = call i32 @SHA1(i8* %3, i32 %5, i32* %6)
%8 = load i32, i32* %6
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %8)
%10 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 1
%11 = load i32, i32* %10
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %11)
%13 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 2
%14 = load i32, i32* %13
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %14)
%16 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 3
%17 = load i32, i32* %16
%18 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %17)
%19 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 4
%20 = load i32, i32* %19
%21 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %20)
%22 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 5
%23 = load i32, i32* %22
%24 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %23)
%25 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 6
%26 = load i32, i32* %25
%27 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %26)
%28 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 7
%29 = load i32, i32* %28
%30 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %29)
%31 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 8
%32 = load i32, i32* %31
%33 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %32)
%34 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 9
%35 = load i32, i32* %34
%36 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %35)
%37 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 10
%38 = load i32, i32* %37
%39 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %38)
%40 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 11
%41 = load i32, i32* %40
%42 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %41)
%43 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 12
%44 = load i32, i32* %43
%45 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %44)
%46 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 13
%47 = load i32, i32* %46
%48 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %47)
%49 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 14
%50 = load i32, i32* %49
%51 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %50)
%52 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 15
%53 = load i32, i32* %52
%54 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %53)
%55 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 16
%56 = load i32, i32* %55
%57 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %56)
%58 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 17
%59 = load i32, i32* %58
%60 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %59)
%61 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 18
%62 = load i32, i32* %61
%63 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %62)
%64 = getelementptr inbounds [32 x i32], [32 x i32]* %2, i64 0, i64 19
%65 = load i32, i32* %64
%66 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %65)
%67 = call i32 @putchar(i32 10)
ret i32 0
}