#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);
int main(int argc, char **argv) {
  printf("argc %d\n", argc);
  while (argc--)
    printf("%s\n", *(argv++));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    -0x8(%rbp),%esi
lea    0xed0(%rip),%rdi
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
mov    %eax,%ecx
add    $0xffffffff,%ecx
mov    %ecx,-0x8(%rbp)
cmp    $0x0,%eax
je     116e <main+0x5e>
mov    -0x10(%rbp),%rax
mov    %rax,%rcx
add    $0x8,%rcx
mov    %rcx,-0x10(%rbp)
mov    (%rax),%rax
mov    %eax,%esi
lea    0xea5(%rip),%rdi
call   1030 <printf@plt>
jmp    1135 <main+0x25>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
mov    %rsi,%r15
mov    %edi,%ebp
lea    0xedd(%rip),%rdi
mov    %ebp,%esi
call   1030 <printf@plt>
test   %ebp,%ebp
je     1154 <main+0x44>
mov    %ebp,%ebp
xor    %ebx,%ebx
lea    0xed0(%rip),%r14
nopl   0x0(%rax)
mov    (%r15,%rbx,8),%esi
mov    %r14,%rdi
call   1030 <printf@plt>
add    $0x1,%rbx
cmp    %ebx,%ebp
jne    1140 <main+0x30>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [9 x i8] c"argc %d\0A\00"
@.str.1 = [4 x i8] c"%s\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%6 = load i32, i32* %4
%7 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i32 %6)
br label %8
8: ; preds = %12, %2
%9 = load i32, i32* %4
%10 = add nsw i32 %9, -1
store i32 %10, i32* %4
%11 = icmp ne i32 %9, 0
br i1 %11, label %12, label %18
12: ; preds = %8
%13 = load i8**, i8*** %5
%14 = getelementptr inbounds i8*, i8** %13, i32 1
store i8** %14, i8*** %5
%15 = load i8*, i8** %13
%16 = ptrtoint i8* %15 to i32
%17 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %16)
br label %8
18: ; preds = %8
ret i32 0
}

LLVM IR (-O2):
@.str = [9 x i8] c"argc %d\0A\00"
@.str.1 = [4 x i8] c"%s\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = tail call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i32 %0)
%4 = icmp eq i32 %0, 0
br i1 %4, label %15, label %5
5: ; preds = %2, %5
%6 = phi i8** [ %9, %5 ], [ %1, %2 ]
%7 = phi i32 [ %8, %5 ], [ %0, %2 ]
%8 = add nsw i32 %7, -1
%9 = getelementptr inbounds i8*, i8** %6, i64 1
%10 = load i8*, i8** %6
%11 = ptrtoint i8* %10 to i64
%12 = trunc i64 %11 to i32
%13 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %12)
%14 = icmp eq i32 %8, 0
br i1 %14, label %15, label %5
15: ; preds = %5, %2
ret i32 0
}