#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 */
#define SIGCONT 135
#define SIGHUP 134
#define SIGINT 133
#define SIGKILL 132
#define SIGSTOP 131
#define SIGTERM 130
#define SIGUSR1 129
#define SIGUSR2 128
int /*<<< orphan*/ printf(char *, char *);
print_signal_name(int signal) {
  char *signame;
  switch (signal) {
  case SIGSTOP:
    signame = "SIGSTOP";
    break;
  case SIGCONT:
    signame = "SIGCONT";
    break;
  case SIGHUP:
    signame = "SIGHUP";
    break;
  case SIGINT:
    signame = "SIGINT";
    break;
  case SIGTERM:
    signame = "SIGTERM";
    break;
  case SIGKILL:
    signame = "SIGKILL";
    break;
  case SIGUSR1:
    signame = "SIGUSR1";
    break;
  case SIGUSR2:
    signame = "SIGUSR1";
    break;
  default:
    signame = "UNKNOWN";
    break;
  }
  printf("Caught signal: %s\n", signame);
}


x86 assembly (clang, -O0):
<print_signal_name>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %edi,-0x8(%rbp)
mov    -0x8(%rbp),%eax
add    $0xffffff80,%eax
mov    %eax,%ecx
mov    %rcx,-0x18(%rbp)
sub    $0x7,%eax
ja     11c4 <print_signal_name+0xb4>
mov    -0x18(%rbp),%rax
lea    0xec5(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xed5(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11cf <print_signal_name+0xbf>
lea    0xecd(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11cf <print_signal_name+0xbf>
lea    0xec5(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11cf <print_signal_name+0xbf>
lea    0xebc(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11cf <print_signal_name+0xbf>
lea    0xeb3(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11cf <print_signal_name+0xbf>
lea    0xeab(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11cf <print_signal_name+0xbf>
lea    0xea3(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11cf <print_signal_name+0xbf>
lea    0xe93(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11cf <print_signal_name+0xbf>
lea    0xe8b(%rip),%rax
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rsi
lea    0xe84(%rip),%rdi
call   1030 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_signal_name>:
add    $0xffffff80,%edi
cmp    $0x7,%edi
ja     1135 <print_signal_name+0x25>
movslq %edi,%rax
lea    0xf32(%rip),%rcx
movslq (%rcx,%rax,4),%rsi
add    %rcx,%rsi
lea    0xf0e(%rip),%rdi
jmp    1030 <printf@plt>
lea    0xefa(%rip),%rsi
lea    0xefb(%rip),%rdi
jmp    1030 <printf@plt>

LLVM IR (-O0):
@.str = [8 x i8] c"SIGSTOP\00"
@.str.1 = [8 x i8] c"SIGCONT\00"
@.str.2 = [7 x i8] c"SIGHUP\00"
@.str.3 = [7 x i8] c"SIGINT\00"
@.str.4 = [8 x i8] c"SIGTERM\00"
@.str.5 = [8 x i8] c"SIGKILL\00"
@.str.6 = [8 x i8] c"SIGUSR1\00"
@.str.7 = [8 x i8] c"UNKNOWN\00"
@.str.8 = [19 x i8] c"Caught signal: %s\0A\00"
define i32 @print_signal_name(i32 %0) {
%2 = alloca i32
%3 = alloca i32
%4 = alloca i8*
store i32 %0, i32* %3
%5 = load i32, i32* %3
switch i32 %5, label %14 [
i32 131, label %6
i32 135, label %7
i32 134, label %8
i32 133, label %9
i32 130, label %10
i32 132, label %11
i32 129, label %12
i32 128, label %13
]
6: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i8** %4
br label %15
7: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i8** %4
br label %15
8: ; preds = %1
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0), i8** %4
br label %15
9: ; preds = %1
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.3, i64 0, i64 0), i8** %4
br label %15
10: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.4, i64 0, i64 0), i8** %4
br label %15
11: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.5, i64 0, i64 0), i8** %4
br label %15
12: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.6, i64 0, i64 0), i8** %4
br label %15
13: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.6, i64 0, i64 0), i8** %4
br label %15
14: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.7, i64 0, i64 0), i8** %4
br label %15
15: ; preds = %14, %13, %12, %11, %10, %9, %8, %7, %6
%16 = load i8*, i8** %4
%17 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.8, i64 0, i64 0), i8* %16)
%18 = load i32, i32* %2
ret i32 %18
}

LLVM IR (-O2):
@.str = [8 x i8] c"SIGSTOP\00"
@.str.1 = [8 x i8] c"SIGCONT\00"
@.str.2 = [7 x i8] c"SIGHUP\00"
@.str.3 = [7 x i8] c"SIGINT\00"
@.str.4 = [8 x i8] c"SIGTERM\00"
@.str.5 = [8 x i8] c"SIGKILL\00"
@.str.6 = [8 x i8] c"SIGUSR1\00"
@.str.7 = [8 x i8] c"UNKNOWN\00"
@.str.8 = [19 x i8] c"Caught signal: %s\0A\00"
@reltable.print_signal_name = [8 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.6 to i64), i64 ptrtoint ([8 x i32]* @reltable.print_signal_name to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.6 to i64), i64 ptrtoint ([8 x i32]* @reltable.print_signal_name to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.4 to i64), i64 ptrtoint ([8 x i32]* @reltable.print_signal_name to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str to i64), i64 ptrtoint ([8 x i32]* @reltable.print_signal_name to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.5 to i64), i64 ptrtoint ([8 x i32]* @reltable.print_signal_name to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @.str.3 to i64), i64 ptrtoint ([8 x i32]* @reltable.print_signal_name to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @.str.2 to i64), i64 ptrtoint ([8 x i32]* @reltable.print_signal_name to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.1 to i64), i64 ptrtoint ([8 x i32]* @reltable.print_signal_name to i64)) to i32)]
define i32 @print_signal_name(i32 %0) {
%2 = add i32 %0, -128
%3 = icmp ult i32 %2, 8
br i1 %3, label %4, label %8
4: ; preds = %1
%5 = sext i32 %2 to i64
%6 = shl i64 %5, 2
%7 = call i8* @llvm.load.relative.i64(i8* bitcast ([8 x i32]* @reltable.print_signal_name to i8*), i64 %6)
br label %8
8: ; preds = %1, %4
%9 = phi i8* [ %7, %4 ], [ getelementptr inbounds ([8 x i8], [8 x i8]* @.str.7, i64 0, i64 0), %1 ]
%10 = tail call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.8, i64 0, i64 0), i8* %9)
ret i32 undef
}