#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 caller1();
int caller2();
int caller3();
int caller4();
int caller5();
int /*<<< orphan*/ printf(char *, int);
void driver(void) {
  printf("caller1 () => %d\n", caller1());
  printf("caller2 () => %d\n", caller2());
  printf("caller3 () => %d\n", caller3());
  printf("caller4 () => %d\n", caller4());
  printf("caller5 () => %d\n", caller5());
}


x86 assembly (clang, -O0):
<driver>:
push   %rbp
mov    %rsp,%rbp
mov    $0x0,%al
call   1060 <caller1@plt>
mov    %eax,%esi
lea    0xe8c(%rip),%rdi
call   1050 <printf@plt>
mov    $0x0,%al
call   1030 <caller2@plt>
mov    %eax,%esi
lea    0xe89(%rip),%rdi
call   1050 <printf@plt>
mov    $0x0,%al
call   1070 <caller3@plt>
mov    %eax,%esi
lea    0xe86(%rip),%rdi
call   1050 <printf@plt>
mov    $0x0,%al
call   1040 <caller4@plt>
mov    %eax,%esi
lea    0xe83(%rip),%rdi
call   1050 <printf@plt>
mov    $0x0,%al
call   1080 <caller5@plt>
mov    %eax,%esi
lea    0xe80(%rip),%rdi
call   1050 <printf@plt>
pop    %rbp
ret

x86 assembly (clang, -O2):
<driver>:
push   %rax
xor    %eax,%eax
call   1060 <caller1@plt>
lea    0xe91(%rip),%rdi
mov    %eax,%esi
call   1050 <printf@plt>
xor    %eax,%eax
call   1030 <caller2@plt>
lea    0xe8e(%rip),%rdi
mov    %eax,%esi
call   1050 <printf@plt>
xor    %eax,%eax
call   1070 <caller3@plt>
lea    0xe8b(%rip),%rdi
mov    %eax,%esi
call   1050 <printf@plt>
xor    %eax,%eax
call   1040 <caller4@plt>
lea    0xe88(%rip),%rdi
mov    %eax,%esi
call   1050 <printf@plt>
xor    %eax,%eax
call   1080 <caller5@plt>
lea    0xe85(%rip),%rdi
mov    %eax,%esi
pop    %rax
jmp    1050 <printf@plt>

LLVM IR (-O0):
@.str = [18 x i8] c"caller1 () => %d\0A\00"
@.str.1 = [18 x i8] c"caller2 () => %d\0A\00"
@.str.2 = [18 x i8] c"caller3 () => %d\0A\00"
@.str.3 = [18 x i8] c"caller4 () => %d\0A\00"
@.str.4 = [18 x i8] c"caller5 () => %d\0A\00"
define void @driver() {
%1 = call i32 (...) @caller1()
%2 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0), i32 %1)
%3 = call i32 (...) @caller2()
%4 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.1, i64 0, i64 0), i32 %3)
%5 = call i32 (...) @caller3()
%6 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0), i32 %5)
%7 = call i32 (...) @caller4()
%8 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.3, i64 0, i64 0), i32 %7)
%9 = call i32 (...) @caller5()
%10 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.4, i64 0, i64 0), i32 %9)
ret void
}

LLVM IR (-O2):
@.str = [18 x i8] c"caller1 () => %d\0A\00"
@.str.1 = [18 x i8] c"caller2 () => %d\0A\00"
@.str.2 = [18 x i8] c"caller3 () => %d\0A\00"
@.str.3 = [18 x i8] c"caller4 () => %d\0A\00"
@.str.4 = [18 x i8] c"caller5 () => %d\0A\00"
define void @driver() {
%1 = tail call i32 (...) @caller1()
%2 = tail call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0), i32 %1)
%3 = tail call i32 (...) @caller2()
%4 = tail call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.1, i64 0, i64 0), i32 %3)
%5 = tail call i32 (...) @caller3()
%6 = tail call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0), i32 %5)
%7 = tail call i32 (...) @caller4()
%8 = tail call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.3, i64 0, i64 0), i32 %7)
%9 = tail call i32 (...) @caller5()
%10 = tail call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.4, i64 0, i64 0), i32 %9)
ret void
}