#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() {
  float fahr, celsius;
  int lower, upper, step;
  lower = 0;
  upper = 300;
  step = 20;
  fahr = lower;
  printf("%s %s\n", "fahr", "celsius");
  while (fahr <= upper) {
    celsius = (5.9 / 9.0) * (fahr - 32.0);
    printf("%3.0f %6.1f\n", fahr, celsius);
    fahr += step;
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x10(%rbp)
movl   $0x12c,-0x14(%rbp)
movl   $0x14,-0x18(%rbp)
cvtsi2ssl -0x10(%rbp),%xmm0
movss  %xmm0,-0x8(%rbp)
lea    0xecb(%rip),%rdi
lea    0xecb(%rip),%rsi
lea    0xec9(%rip),%rdx
mov    $0x0,%al
call   1030 <printf@plt>
movss  -0x8(%rbp),%xmm1
cvtsi2ssl -0x14(%rbp),%xmm0
ucomiss %xmm1,%xmm0
jb     11cb <main+0xbb>
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm1
movsd  0xe8a(%rip),%xmm0
subsd  %xmm0,%xmm1
movsd  0xe76(%rip),%xmm0
mulsd  %xmm1,%xmm0
cvtsd2ss %xmm0,%xmm0
movss  %xmm0,-0xc(%rbp)
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  -0xc(%rbp),%xmm1
cvtss2sd %xmm1,%xmm1
lea    0xe74(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
cvtsi2ssl -0x18(%rbp),%xmm0
addss  -0x8(%rbp),%xmm0
movss  %xmm0,-0x8(%rbp)
jmp    115a <main+0x4a>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xfe0(%rip),%rdi
lea    0xfe0(%rip),%rsi
lea    0xfde(%rip),%rdx
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xfd8(%rip),%rbx
movsd  0xec4(%rip),%xmm1
xorps  %xmm0,%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xeb7(%rip),%xmm0
movsd  0xeb7(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xead(%rip),%xmm0
movsd  0xead(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xea3(%rip),%xmm0
movsd  0xea3(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xe99(%rip),%xmm0
movsd  0xe99(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xe8f(%rip),%xmm0
movsd  0xe8f(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xe85(%rip),%xmm0
movsd  0xe85(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xe7b(%rip),%xmm0
movsd  0xe7b(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xe71(%rip),%xmm0
movsd  0xe71(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xe67(%rip),%xmm0
movsd  0xe67(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xe5d(%rip),%xmm0
movsd  0xe5d(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xe53(%rip),%xmm0
movsd  0xe53(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xe49(%rip),%xmm0
movsd  0xe49(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xe3f(%rip),%xmm0
movsd  0xe3f(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xe35(%rip),%xmm0
movsd  0xe35(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movsd  0xe2b(%rip),%xmm0
movsd  0xe2b(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [7 x i8] c"%s %s\0A\00"
@.str.1 = [5 x i8] c"fahr\00"
@.str.2 = [8 x i8] c"celsius\00"
@.str.3 = [13 x i8] c"%3.0f %6.1f\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca float
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %4
store i32 300, i32* %5
store i32 20, i32* %6
%7 = load i32, i32* %4
%8 = sitofp i32 %7 to float
store float %8, float* %2
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0))
br label %10
10: ; preds = %15, %0
%11 = load float, float* %2
%12 = load i32, i32* %5
%13 = sitofp i32 %12 to float
%14 = fcmp ole float %11, %13
br i1 %14, label %15, label %30
15: ; preds = %10
%16 = load float, float* %2
%17 = fpext float %16 to double
%18 = fsub double %17, 3.200000e+01
%19 = fmul double 0x3FE4FA4FA4FA4FA5, %18
%20 = fptrunc double %19 to float
store float %20, float* %3
%21 = load float, float* %2
%22 = fpext float %21 to double
%23 = load float, float* %3
%24 = fpext float %23 to double
%25 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double %22, double %24)
%26 = load i32, i32* %6
%27 = sitofp i32 %26 to float
%28 = load float, float* %2
%29 = fadd float %28, %27
store float %29, float* %2
br label %10
30: ; preds = %10
%31 = load i32, i32* %1
ret i32 %31
}

LLVM IR (-O2):
@.str = [7 x i8] c"%s %s\0A\00"
@.str.1 = [5 x i8] c"fahr\00"
@.str.2 = [8 x i8] c"celsius\00"
@.str.3 = [13 x i8] c"%3.0f %6.1f\0A\00"
define i32 @main() {
%1 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0))
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 0.000000e+00, double 0xC034FA4FA0000000)
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 2.000000e+01, double 0xC01F777780000000)
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 4.000000e+01, double 0x4014FA4FA0000000)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 6.000000e+01, double 0x40325B05C0000000)
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 8.000000e+01, double 0x403F777780000000)
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 1.000000e+02, double 0x404649F4A0000000)
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 1.200000e+02, double 0x404CD82D80000000)
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 1.400000e+02, double 0x4051B33340000000)
%10 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 1.600000e+02, double 0x4054FA4FA0000000)
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 1.800000e+02, double 0x4058416C20000000)
%12 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 2.000000e+02, double 0x405B888880000000)
%13 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 2.200000e+02, double 0x405ECFA500000000)
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 2.400000e+02, double 0x40610B60C0000000)
%15 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 2.600000e+02, double 0x4062AEEEE0000000)
%16 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 2.800000e+02, double 0x4064527D20000000)
%17 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), double 3.000000e+02, double 0x4065F60B60000000)
ret i32 0
}