#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*/ scanf(char *, int *);
void mat_read(int m[][80], int r, int c) {
  int i, j;
  for (i = 0; i < r; ++i)
    for (j = 0; j < c; ++j)
      scanf(" %d%*c", &m[i][j]);
}


x86 assembly (clang, -O0):
<mat_read>:
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    1192 <mat_read+0x82>
movl   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x10(%rbp),%eax
jge    117f <mat_read+0x6f>
mov    -0x8(%rbp),%rsi
movslq -0x14(%rbp),%rax
imul   $0x140,%rax,%rax
add    %rax,%rsi
movslq -0x18(%rbp),%rax
shl    $0x2,%rax
add    %rax,%rsi
lea    0xe94(%rip),%rdi
call   1030 <scanf@plt>
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    113c <mat_read+0x2c>
jmp    1184 <mat_read+0x74>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1129 <mat_read+0x19>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<mat_read>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
sub    $0x18,%rsp
mov    %edx,0xc(%rsp)
test   %esi,%esi
jle    1187 <mat_read+0x77>
mov    %rdi,%r15
mov    %esi,%r12d
mov    0xc(%rsp),%eax
mov    %rax,0x10(%rsp)
xor    %r13d,%r13d
lea    0xec1(%rip),%rbp
jmp    1160 <mat_read+0x50>
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
add    $0x1,%r13
add    $0x140,%r15
cmp    %r12,%r13
je     1187 <mat_read+0x77>
cmpl   $0x0,0xc(%rsp)
jle    1150 <mat_read+0x40>
mov    0x10(%rsp),%r14
mov    %r15,%rbx
nop
mov    %rbp,%rdi
mov    %rbx,%rsi
call   1030 <scanf@plt>
add    $0x4,%rbx
add    $0xffffffffffffffff,%r14
jne    1170 <mat_read+0x60>
jmp    1150 <mat_read+0x40>
add    $0x18,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [7 x i8] c" %d%*c\00"
define void @mat_read([80 x i32]* %0, i32 %1, i32 %2) {
%4 = alloca [80 x i32]*
%5 = alloca i32
%6 = alloca i32
%7 = alloca i32
%8 = alloca i32
store [80 x i32]* %0, [80 x i32]** %4
store i32 %1, i32* %5
store i32 %2, i32* %6
store i32 0, i32* %7
br label %9
9: ; preds = %31, %3
%10 = load i32, i32* %7
%11 = load i32, i32* %5
%12 = icmp slt i32 %10, %11
br i1 %12, label %13, label %34
13: ; preds = %9
store i32 0, i32* %8
br label %14
14: ; preds = %27, %13
%15 = load i32, i32* %8
%16 = load i32, i32* %6
%17 = icmp slt i32 %15, %16
br i1 %17, label %18, label %30
18: ; preds = %14
%19 = load [80 x i32]*, [80 x i32]** %4
%20 = load i32, i32* %7
%21 = sext i32 %20 to i64
%22 = getelementptr inbounds [80 x i32], [80 x i32]* %19, i64 %21
%23 = load i32, i32* %8
%24 = sext i32 %23 to i64
%25 = getelementptr inbounds [80 x i32], [80 x i32]* %22, i64 0, i64 %24
%26 = call i32 @scanf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32* %25)
br label %27
27: ; preds = %18
%28 = load i32, i32* %8
%29 = add nsw i32 %28, 1
store i32 %29, i32* %8
br label %14
30: ; preds = %14
br label %31
31: ; preds = %30
%32 = load i32, i32* %7
%33 = add nsw i32 %32, 1
store i32 %33, i32* %7
br label %9
34: ; preds = %9
ret void
}

LLVM IR (-O2):
@.str = [7 x i8] c" %d%*c\00"
define void @mat_read([80 x i32]* %0, i32 %1, i32 %2) {
%4 = icmp sgt i32 %1, 0
br i1 %4, label %5, label %20
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, %17
%10 = phi i64 [ 0, %5 ], [ %18, %17 ]
br i1 %6, label %11, label %17
11: ; preds = %9, %11
%12 = phi i64 [ %15, %11 ], [ 0, %9 ]
%13 = getelementptr inbounds [80 x i32], [80 x i32]* %0, i64 %10, i64 %12
%14 = tail call i32 @scanf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32* %13)
%15 = add nuw nsw i64 %12, 1
%16 = icmp eq i64 %15, %8
br i1 %16, label %17, label %11
17: ; preds = %11, %9
%18 = add nuw nsw i64 %10, 1
%19 = icmp eq i64 %18, %7
br i1 %19, label %20, label %9
20: ; preds = %17, %3
ret void
}