#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 */
double cos(double);
int /*<<< orphan*/ printf(char *);
double rand_double();
double sin(double);
double tic();
double benchmark() {
  double elapsed;
  double x;
  double y;
  double z;
  double t;
  int i;
  t = tic();
  for (i = 0; i < 1000000; i++) {
    x = (20.0 * rand_double()) - 10.0;
    y = sin(x);
    z = cos(x);
    if (y != y || z != z) {
      printf("should not return NaN\n");
      break;
    }
  }
  elapsed = tic() - t;
  if (y != y || z != z) {
    printf("should not return NaN\n");
  }
  return elapsed;
}


x86 assembly (clang, -O0):
<benchmark>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    $0x0,%al
call   1040 <tic@plt>
movsd  %xmm0,-0x28(%rbp)
movl   $0x0,-0x2c(%rbp)
cmpl   $0xf4240,-0x2c(%rbp)
jge    120f <benchmark+0xbf>
mov    $0x0,%al
call   1050 <rand_double@plt>
movsd  0xe79(%rip),%xmm1
mulsd  %xmm1,%xmm0
movsd  0xe75(%rip),%xmm1
addsd  %xmm1,%xmm0
movsd  %xmm0,-0x10(%rbp)
movsd  -0x10(%rbp),%xmm0
call   1060 <sin@plt>
movsd  %xmm0,-0x18(%rbp)
movsd  -0x10(%rbp),%xmm0
call   1070 <cos@plt>
movsd  %xmm0,-0x20(%rbp)
movsd  -0x18(%rbp),%xmm0
ucomisd -0x18(%rbp),%xmm0
jne    11eb <benchmark+0x9b>
jp     11eb <benchmark+0x9b>
movsd  -0x20(%rbp),%xmm0
ucomisd -0x20(%rbp),%xmm0
jne    11eb <benchmark+0x9b>
jp     11eb <benchmark+0x9b>
jmp    11fc <benchmark+0xac>
lea    0xe1e(%rip),%rdi
call   1030 <printf@plt>
jmp    120f <benchmark+0xbf>
jmp    1201 <benchmark+0xb1>
mov    -0x2c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x2c(%rbp)
jmp    116b <benchmark+0x1b>
mov    $0x0,%al
call   1040 <tic@plt>
subsd  -0x28(%rbp),%xmm0
movsd  %xmm0,-0x8(%rbp)
movsd  -0x18(%rbp),%xmm0
ucomisd -0x18(%rbp),%xmm0
jne    1251 <benchmark+0x101>
jp     1251 <benchmark+0x101>
movsd  -0x20(%rbp),%xmm0
ucomisd -0x20(%rbp),%xmm0
jne    1251 <benchmark+0x101>
jp     1251 <benchmark+0x101>
jmp    125d <benchmark+0x10d>
lea    0xdb8(%rip),%rdi
call   1030 <printf@plt>
movsd  -0x8(%rbp),%xmm0
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<benchmark>:
push   %rbx
sub    $0x20,%rsp
xor    %eax,%eax
call   1040 <tic@plt>
movsd  %xmm0,0x10(%rsp)
mov    $0xf4240,%ebx
nopw   0x0(%rax,%rax,1)
xor    %eax,%eax
call   1050 <rand_double@plt>
mulsd  0xe81(%rip),%xmm0
addsd  0xe81(%rip),%xmm0
movsd  %xmm0,0x18(%rsp)
call   1060 <sin@plt>
movsd  %xmm0,0x8(%rsp)
movsd  0x18(%rsp),%xmm0
call   1070 <cos@plt>
movsd  0x8(%rsp),%xmm1
ucomisd %xmm1,%xmm1
jp     11c3 <benchmark+0x73>
ucomisd %xmm0,%xmm0
jp     11c3 <benchmark+0x73>
add    $0xffffffff,%ebx
jne    1170 <benchmark+0x20>
xor    %eax,%eax
call   1040 <tic@plt>
jmp    11ed <benchmark+0x9d>
lea    0xe46(%rip),%rbx
mov    %rbx,%rdi
call   1030 <puts@plt>
xor    %eax,%eax
call   1040 <tic@plt>
movsd  %xmm0,0x8(%rsp)
mov    %rbx,%rdi
call   1030 <puts@plt>
movsd  0x8(%rsp),%xmm0
subsd  0x10(%rsp),%xmm0
add    $0x20,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [23 x i8] c"should not return NaN\0A\00"
define double @benchmark() {
%1 = alloca double
%2 = alloca double
%3 = alloca double
%4 = alloca double
%5 = alloca double
%6 = alloca i32
%7 = call double (...) @tic()
store double %7, double* %5
store i32 0, i32* %6
br label %8
8: ; preds = %28, %0
%9 = load i32, i32* %6
%10 = icmp slt i32 %9, 1000000
br i1 %10, label %11, label %31
11: ; preds = %8
%12 = call double (...) @rand_double()
%13 = call double @llvm.fmuladd.f64(double 2.000000e+01, double %12, double -1.000000e+01)
store double %13, double* %2
%14 = load double, double* %2
%15 = call double @sin(double %14)
store double %15, double* %3
%16 = load double, double* %2
%17 = call double @cos(double %16)
store double %17, double* %4
%18 = load double, double* %3
%19 = load double, double* %3
%20 = fcmp une double %18, %19
br i1 %20, label %25, label %21
21: ; preds = %11
%22 = load double, double* %4
%23 = load double, double* %4
%24 = fcmp une double %22, %23
br i1 %24, label %25, label %27
25: ; preds = %21, %11
%26 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
br label %31
27: ; preds = %21
br label %28
28: ; preds = %27
%29 = load i32, i32* %6
%30 = add nsw i32 %29, 1
store i32 %30, i32* %6
br label %8
31: ; preds = %25, %8
%32 = call double (...) @tic()
%33 = load double, double* %5
%34 = fsub double %32, %33
store double %34, double* %1
%35 = load double, double* %3
%36 = load double, double* %3
%37 = fcmp une double %35, %36
br i1 %37, label %42, label %38
38: ; preds = %31
%39 = load double, double* %4
%40 = load double, double* %4
%41 = fcmp une double %39, %40
br i1 %41, label %42, label %44
42: ; preds = %38, %31
%43 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
br label %44
44: ; preds = %42, %38
%45 = load double, double* %1
ret double %45
}

LLVM IR (-O2):
@str.1 = [22 x i8] c"should not return NaN\00"
define double @benchmark() {
%1 = tail call double (...) @tic()
br label %5
2: ; preds = %5
%3 = add nuw nsw i32 %6, 1
%4 = icmp eq i32 %3, 1000000
br i1 %4, label %14, label %5
5: ; preds = %0, %2
%6 = phi i32 [ 0, %0 ], [ %3, %2 ]
%7 = tail call double (...) @rand_double()
%8 = tail call double @llvm.fmuladd.f64(double %7, double 2.000000e+01, double -1.000000e+01)
%9 = tail call double @sin(double %8)
%10 = tail call double @cos(double %8)
%11 = fcmp uno double %9, 0.000000e+00
%12 = fcmp uno double %10, 0.000000e+00
%13 = select i1 %11, i1 true, i1 %12
br i1 %13, label %16, label %2
14: ; preds = %2
%15 = tail call double (...) @tic()
br label %20
16: ; preds = %5
%17 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @str.1, i64 0, i64 0))
%18 = tail call double (...) @tic()
%19 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @str.1, i64 0, i64 0))
br label %20
20: ; preds = %14, %16
%21 = phi double [ %15, %14 ], [ %18, %16 ]
%22 = fsub double %21, %1
ret double %22
}