#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 *, ...);
int main(int argc, char *argv[]) {
  printf("Program name %s\n", argv[0]);
  if (argc == 1) {
    printf("No arguments supplied\n");
  } else {
    for (int i = 1; i < argc; i++) {
      printf("argc[%d] = %s\n", i, argv[i]);
    }
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    -0x10(%rbp),%rax
mov    (%rax),%rsi
lea    0xecc(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
cmpl   $0x1,-0x8(%rbp)
jne    1158 <main+0x48>
lea    0xec5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    119b <main+0x8b>
movl   $0x1,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    1196 <main+0x86>
mov    -0x14(%rbp),%esi
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rdx
lea    0xea7(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    115f <main+0x4f>
jmp    119b <main+0x8b>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
mov    %rsi,%r14
mov    %edi,%ebx
mov    (%rsi),%rsi
lea    0xec9(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
cmp    $0x1,%ebx
jne    1151 <main+0x31>
lea    0xed6(%rip),%rdi
call   1030 <puts@plt>
jmp    1189 <main+0x69>
jle    1189 <main+0x69>
mov    %ebx,%r12d
mov    $0x1,%ebx
lea    0xeaf(%rip),%r15
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax)
mov    (%r14,%rbx,8),%rdx
mov    %r15,%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%r12
jne    1170 <main+0x50>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [17 x i8] c"Program name %s\0A\00"
@.str.1 = [23 x i8] c"No arguments supplied\0A\00"
@.str.2 = [15 x i8] c"argc[%d] = %s\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%7 = load i8**, i8*** %5
%8 = getelementptr inbounds i8*, i8** %7, i64 0
%9 = load i8*, i8** %8
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0), i8* %9)
%11 = load i32, i32* %4
%12 = icmp eq i32 %11, 1
br i1 %12, label %13, label %15
13: ; preds = %2
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0))
br label %32
15: ; preds = %2
store i32 1, i32* %6
br label %16
16: ; preds = %28, %15
%17 = load i32, i32* %6
%18 = load i32, i32* %4
%19 = icmp slt i32 %17, %18
br i1 %19, label %20, label %31
20: ; preds = %16
%21 = load i32, i32* %6
%22 = load i8**, i8*** %5
%23 = load i32, i32* %6
%24 = sext i32 %23 to i64
%25 = getelementptr inbounds i8*, i8** %22, i64 %24
%26 = load i8*, i8** %25
%27 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.2, i64 0, i64 0), i32 %21, i8* %26)
br label %28
28: ; preds = %20
%29 = load i32, i32* %6
%30 = add nsw i32 %29, 1
store i32 %30, i32* %6
br label %16
31: ; preds = %16
br label %32
32: ; preds = %31, %13
%33 = load i32, i32* %3
ret i32 %33
}

LLVM IR (-O2):
@.str = [17 x i8] c"Program name %s\0A\00"
@.str.2 = [15 x i8] c"argc[%d] = %s\0A\00"
@str = [22 x i8] c"No arguments supplied\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = load i8*, i8** %1
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0), i8* %3)
%5 = icmp eq i32 %0, 1
br i1 %5, label %10, label %6
6: ; preds = %2
%7 = icmp sgt i32 %0, 1
br i1 %7, label %8, label %20
8: ; preds = %6
%9 = zext i32 %0 to i64
br label %12
10: ; preds = %2
%11 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @str, i64 0, i64 0))
br label %20
12: ; preds = %8, %12
%13 = phi i64 [ 1, %8 ], [ %18, %12 ]
%14 = getelementptr inbounds i8*, i8** %1, i64 %13
%15 = load i8*, i8** %14
%16 = trunc i64 %13 to i32
%17 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str.2, i64 0, i64 0), i32 %16, i8* %15)
%18 = add nuw nsw i64 %13, 1
%19 = icmp eq i64 %18, %9
br i1 %19, label %20, label %12
20: ; preds = %12, %6, %10
ret i32 0
}