#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 printMatrix(float *mat, int width) {
  int i, j;
  printf("\n");
  for (i = 0; i < width; ++i) {
    const int isz = i * width;
    for (j = 0; j < width; ++j) {
      printf("%08.2f ", mat[isz + j]);
    }
    printf("\n");
  }
}


x86 assembly (clang, -O0):
<printMatrix>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
lea    0xeda(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    11ab <printMatrix+0x9b>
mov    -0x10(%rbp),%eax
imul   -0xc(%rbp),%eax
mov    %eax,-0x18(%rbp)
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    118f <printMatrix+0x7f>
mov    -0x8(%rbp),%rax
mov    -0x18(%rbp),%ecx
add    -0x14(%rbp),%ecx
movslq %ecx,%rcx
movss  (%rax,%rcx,4),%xmm0
cvtss2sd %xmm0,%xmm0
lea    0xe88(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1151 <printMatrix+0x41>
lea    0xe6a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1134 <printMatrix+0x24>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<printMatrix>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
mov    %esi,%ebp
mov    %rdi,%rbx
mov    $0xa,%edi
call   1030 <putchar@plt>
test   %ebp,%ebp
jle    11a2 <printMatrix+0x82>
mov    %ebp,%r13d
lea    0x0(,%r13,4),%r15
xor    %r12d,%r12d
lea    0xead(%rip),%r14
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
xor    %ebp,%ebp
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax)
movss  (%rbx,%rbp,4),%xmm0
cvtss2sd %xmm0,%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1040 <printf@plt>
add    $0x1,%rbp
cmp    %rbp,%r13
jne    1170 <printMatrix+0x50>
mov    $0xa,%edi
call   1030 <putchar@plt>
add    $0x1,%r12
add    %r15,%rbx
cmp    %r13,%r12
jne    1160 <printMatrix+0x40>
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [2 x i8] c"\0A\00"
@.str.1 = [8 x i8] c"%08.2f \00"
define void @printMatrix(float* %0, i32 %1) {
%3 = alloca float*
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
%7 = alloca i32
store float* %0, float** %3
store i32 %1, i32* %4
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %5
br label %9
9: ; preds = %36, %2
%10 = load i32, i32* %5
%11 = load i32, i32* %4
%12 = icmp slt i32 %10, %11
br i1 %12, label %13, label %39
13: ; preds = %9
%14 = load i32, i32* %5
%15 = load i32, i32* %4
%16 = mul nsw i32 %14, %15
store i32 %16, i32* %7
store i32 0, i32* %6
br label %17
17: ; preds = %31, %13
%18 = load i32, i32* %6
%19 = load i32, i32* %4
%20 = icmp slt i32 %18, %19
br i1 %20, label %21, label %34
21: ; preds = %17
%22 = load float*, float** %3
%23 = load i32, i32* %7
%24 = load i32, i32* %6
%25 = add nsw i32 %23, %24
%26 = sext i32 %25 to i64
%27 = getelementptr inbounds float, float* %22, i64 %26
%28 = load float, float* %27
%29 = fpext float %28 to double
%30 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), double %29)
br label %31
31: ; preds = %21
%32 = load i32, i32* %6
%33 = add nsw i32 %32, 1
store i32 %33, i32* %6
br label %17
34: ; preds = %17
%35 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
br label %36
36: ; preds = %34
%37 = load i32, i32* %5
%38 = add nsw i32 %37, 1
store i32 %38, i32* %5
br label %9
39: ; preds = %9
ret void
}

LLVM IR (-O2):
@.str.1 = [8 x i8] c"%08.2f \00"
define void @printMatrix(float* nocapture %0, i32 %1) {
%3 = tail call i32 @putchar(i32 10)
%4 = icmp sgt i32 %1, 0
br i1 %4, label %5, label %24
5: ; preds = %2
%6 = zext i32 %1 to i64
%7 = zext i32 %1 to i64
br label %8
8: ; preds = %20, %5
%9 = phi i64 [ 0, %5 ], [ %22, %20 ]
%10 = mul nsw i64 %9, %6
br label %11
11: ; preds = %8, %11
%12 = phi i64 [ 0, %8 ], [ %18, %11 ]
%13 = add nuw nsw i64 %12, %10
%14 = getelementptr inbounds float, float* %0, i64 %13
%15 = load float, float* %14
%16 = fpext float %15 to double
%17 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), double %16)
%18 = add nuw nsw i64 %12, 1
%19 = icmp eq i64 %18, %7
br i1 %19, label %20, label %11
20: ; preds = %11
%21 = tail call i32 @putchar(i32 10)
%22 = add nuw nsw i64 %9, 1
%23 = icmp eq i64 %22, %7
br i1 %23, label %24, label %8
24: ; preds = %20, %2
ret void
}