#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 printLetters(char **letters, int n, int m) {
  int loop, inner_loop;
  for (loop = 0; loop < n; loop++) {
    for (inner_loop = 0; inner_loop < m; inner_loop++) {
      printf("%c", letters[loop][inner_loop]);
    }
    printf("\n");
  }
}


x86 assembly (clang, -O0):
<printLetters>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
mov    %edx,-0x10(%rbp)
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1194 <printLetters+0x84>
movl   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x10(%rbp),%eax
jge    1178 <printLetters+0x68>
mov    -0x8(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rax
movslq -0x18(%rbp),%rcx
movsbl (%rax,%rcx,1),%esi
lea    0xe9d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    113c <printLetters+0x2c>
lea    0xe84(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1129 <printLetters+0x19>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<printLetters>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
test   %esi,%esi
jle    1168 <printLetters+0x58>
mov    %edx,%r14d
mov    %rdi,%r12
mov    %esi,%r15d
mov    %edx,%r13d
xor    %ebx,%ebx
jmp    1143 <printLetters+0x33>
nop
mov    $0xa,%edi
call   1030 <putchar@plt>
add    $0x1,%rbx
cmp    %r15,%rbx
je     1168 <printLetters+0x58>
test   %r14d,%r14d
jle    1130 <printLetters+0x20>
xor    %ebp,%ebp
nopw   0x0(%rax,%rax,1)
mov    (%r12,%rbx,8),%rax
movsbl (%rax,%rbp,1),%edi
call   1030 <putchar@plt>
add    $0x1,%rbp
cmp    %rbp,%r13
jne    1150 <printLetters+0x40>
jmp    1130 <printLetters+0x20>
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%c\00"
@.str.1 = [2 x i8] c"\0A\00"
define void @printLetters(i8** %0, i32 %1, i32 %2) {
%4 = alloca i8**
%5 = alloca i32
%6 = alloca i32
%7 = alloca i32
%8 = alloca i32
store i8** %0, i8*** %4
store i32 %1, i32* %5
store i32 %2, i32* %6
store i32 0, i32* %7
br label %9
9: ; preds = %35, %3
%10 = load i32, i32* %7
%11 = load i32, i32* %5
%12 = icmp slt i32 %10, %11
br i1 %12, label %13, label %38
13: ; preds = %9
store i32 0, i32* %8
br label %14
14: ; preds = %30, %13
%15 = load i32, i32* %8
%16 = load i32, i32* %6
%17 = icmp slt i32 %15, %16
br i1 %17, label %18, label %33
18: ; preds = %14
%19 = load i8**, i8*** %4
%20 = load i32, i32* %7
%21 = sext i32 %20 to i64
%22 = getelementptr inbounds i8*, i8** %19, i64 %21
%23 = load i8*, i8** %22
%24 = load i32, i32* %8
%25 = sext i32 %24 to i64
%26 = getelementptr inbounds i8, i8* %23, i64 %25
%27 = load i8, i8* %26
%28 = sext i8 %27 to i32
%29 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32 %28)
br label %30
30: ; preds = %18
%31 = load i32, i32* %8
%32 = add nsw i32 %31, 1
store i32 %32, i32* %8
br label %14
33: ; preds = %14
%34 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
br label %35
35: ; preds = %33
%36 = load i32, i32* %7
%37 = add nsw i32 %36, 1
store i32 %37, i32* %7
br label %9
38: ; preds = %9
ret void
}

LLVM IR (-O2):
define void @printLetters(i8** nocapture %0, i32 %1, i32 %2) {
%4 = icmp sgt i32 %1, 0
br i1 %4, label %5, label %26
5: ; preds = %3
%6 = icmp sgt i32 %2, 0
%7 = zext i32 %1 to i64
%8 = zext i32 %2 to i64
br label %9
9: ; preds = %5, %22
%10 = phi i64 [ 0, %5 ], [ %24, %22 ]
br i1 %6, label %11, label %22
11: ; preds = %9
%12 = getelementptr inbounds i8*, i8** %0, i64 %10
br label %13
13: ; preds = %11, %13
%14 = phi i64 [ 0, %11 ], [ %20, %13 ]
%15 = load i8*, i8** %12
%16 = getelementptr inbounds i8, i8* %15, i64 %14
%17 = load i8, i8* %16
%18 = sext i8 %17 to i32
%19 = tail call i32 @putchar(i32 %18)
%20 = add nuw nsw i64 %14, 1
%21 = icmp eq i64 %20, %8
br i1 %21, label %22, label %13
22: ; preds = %13, %9
%23 = tail call i32 @putchar(i32 10)
%24 = add nuw nsw i64 %10, 1
%25 = icmp eq i64 %24, %7
br i1 %25, label %26, label %9
26: ; preds = %22, %3
ret void
}