#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 lower(float);
int /*<<< orphan*/ printf(char *, ...);
int main() {
  printf("\n%c", lower('B'));
  printf("\nshould be b");
  printf("\n%c", lower('f'));
  printf("\nshould be f");
  printf("\n\n");
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
movss  0xed8(%rip),%xmm0
call   1040 <lower@plt>
mov    %eax,%esi
lea    0xece(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec4(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movss  0xea9(%rip),%xmm0
call   1040 <lower@plt>
mov    %eax,%esi
lea    0xea3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xea6(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xea5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
movss  0xec7(%rip),%xmm0
call   1050 <lower@plt>
lea    0xec3(%rip),%rbx
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xeb4(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
movss  0xe9d(%rip),%xmm0
call   1050 <lower@plt>
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xe9a(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xe99(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [4 x i8] c"\0A%c\00"
@.str.1 = [13 x i8] c"\0Ashould be b\00"
@.str.2 = [13 x i8] c"\0Ashould be f\00"
@.str.3 = [3 x i8] c"\0A\0A\00"
define i32 @main() {
%1 = call i32 @lower(float 6.600000e+01)
%2 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %1)
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32 @lower(float 1.020000e+02)
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %4)
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str = [4 x i8] c"\0A%c\00"
@.str.1 = [13 x i8] c"\0Ashould be b\00"
@.str.2 = [13 x i8] c"\0Ashould be f\00"
@str = [2 x i8] c"\0A\00"
define i32 @main() {
%1 = tail call i32 @lower(float 6.600000e+01)
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %1)
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0))
%4 = tail call i32 @lower(float 1.020000e+02)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %4)
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str, i64 0, i64 0))
ret i32 0
}