#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 /*<<< orphan*/ scanf(char *, double *);
double sqrt(double);
int main(void) {
  double leg1, leg2, hypotenuse;
  printf("Input leg1\n");
  scanf("%lf", &leg1);
  printf("Input leg2\n");
  scanf("%lf", &leg2);
  hypotenuse = sqrt(leg1 * leg1 + leg2 * leg2);
  printf("The hypotenuse is %f\n", hypotenuse);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
lea    0xec1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xebf(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xeb3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xea1(%rip),%rdi
lea    -0x10(%rbp),%rsi
call   1040 <scanf@plt>
movsd  -0x8(%rbp),%xmm0
movsd  -0x8(%rbp),%xmm2
movsd  -0x10(%rbp),%xmm1
mulsd  -0x10(%rbp),%xmm1
mulsd  %xmm2,%xmm0
addsd  %xmm1,%xmm0
call   1050 <sqrt@plt>
movsd  %xmm0,-0x18(%rbp)
movsd  -0x18(%rbp),%xmm0
lea    0xe76(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xece(%rip),%rdi
call   1030 <puts@plt>
lea    0xea8(%rip),%rbx
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
lea    0xeb9(%rip),%rdi
call   1030 <puts@plt>
mov    %rsp,%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
movsd  0x8(%rsp),%xmm0
movsd  (%rsp),%xmm1
mulsd  %xmm1,%xmm1
mulsd  %xmm0,%xmm0
addsd  %xmm1,%xmm0
xorpd  %xmm1,%xmm1
ucomisd %xmm1,%xmm0
jb     11a3 <main+0x63>
sqrtsd %xmm0,%xmm0
jmp    11a8 <main+0x68>
call   1060 <sqrt@plt>
lea    0xe55(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [12 x i8] c"Input leg1\0A\00"
@.str.1 = [4 x i8] c"%lf\00"
@.str.2 = [12 x i8] c"Input leg2\0A\00"
@.str.3 = [22 x i8] c"The hypotenuse is %f\0A\00"
define i32 @main() {
%1 = alloca double
%2 = alloca double
%3 = alloca double
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), double* %1)
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), double* %2)
%8 = load double, double* %1
%9 = load double, double* %1
%10 = load double, double* %2
%11 = load double, double* %2
%12 = fmul double %10, %11
%13 = call double @llvm.fmuladd.f64(double %8, double %9, double %12)
%14 = call double @sqrt(double %13)
store double %14, double* %3
%15 = load double, double* %3
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.3, i64 0, i64 0), double %15)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [4 x i8] c"%lf\00"
@.str.3 = [22 x i8] c"The hypotenuse is %f\0A\00"
@str = [11 x i8] c"Input leg1\00"
@str.4 = [11 x i8] c"Input leg2\00"
define i32 @main() {
%1 = alloca double
%2 = alloca double
%3 = bitcast double* %1 to i8*
%4 = bitcast double* %2 to i8*
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), double* %1)
%7 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str.4, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), double* %2)
%9 = load double, double* %1
%10 = load double, double* %2
%11 = fmul double %10, %10
%12 = call double @llvm.fmuladd.f64(double %9, double %9, double %11)
%13 = call double @sqrt(double %12)
%14 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @.str.3, i64 0, i64 0), double %13)
ret i32 0
}