#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*/ dbg_error(char *);
int /*<<< orphan*/ exit(int);
int ui_piece(int san_piece) {
  switch (san_piece) {
  case 0:
    return 0;
  case 1:
    return 2;
  case 2:
    return 4;
  case 3:
    return 6;
  case 4:
    return 8;
  case 5:
    return 10;
  case -1:
    return 12;
  }
  dbg_error("failed to convert SAN piece to user interface piece");
  exit(1);
}


x86 assembly (clang, -O0):
<ui_piece>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x8(%rbp)
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,%ecx
mov    %rcx,-0x10(%rbp)
sub    $0x6,%eax
ja     11a8 <ui_piece+0x88>
mov    -0x10(%rbp),%rax
lea    0xeb5(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
movl   $0x0,-0x4(%rbp)
jmp    11be <ui_piece+0x9e>
movl   $0x2,-0x4(%rbp)
jmp    11be <ui_piece+0x9e>
movl   $0x4,-0x4(%rbp)
jmp    11be <ui_piece+0x9e>
movl   $0x6,-0x4(%rbp)
jmp    11be <ui_piece+0x9e>
movl   $0x8,-0x4(%rbp)
jmp    11be <ui_piece+0x9e>
movl   $0xa,-0x4(%rbp)
jmp    11be <ui_piece+0x9e>
movl   $0xc,-0x4(%rbp)
jmp    11be <ui_piece+0x9e>
lea    0xe6d(%rip),%rdi
call   1030 <dbg_error@plt>
mov    $0x1,%edi
call   1040 <exit@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<ui_piece>:
push   %rax
add    $0x1,%edi
cmp    $0x7,%edi
jae    1138 <ui_piece+0x18>
movslq %edi,%rax
lea    0xf01(%rip),%rcx
mov    (%rcx,%rax,4),%eax
pop    %rcx
ret
lea    0xec1(%rip),%rdi
call   1030 <dbg_error@plt>
mov    $0x1,%edi
call   1040 <exit@plt>

LLVM IR (-O0):
@.str = [52 x i8] c"failed to convert SAN piece to user interface piece\00"
define i32 @ui_piece(i32 %0) {
%2 = alloca i32
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
switch i32 %4, label %12 [
i32 0, label %5
i32 1, label %6
i32 2, label %7
i32 3, label %8
i32 4, label %9
i32 5, label %10
i32 -1, label %11
]
5: ; preds = %1
store i32 0, i32* %2
br label %15
6: ; preds = %1
store i32 2, i32* %2
br label %15
7: ; preds = %1
store i32 4, i32* %2
br label %15
8: ; preds = %1
store i32 6, i32* %2
br label %15
9: ; preds = %1
store i32 8, i32* %2
br label %15
10: ; preds = %1
store i32 10, i32* %2
br label %15
11: ; preds = %1
store i32 12, i32* %2
br label %15
12: ; preds = %1
%13 = call i32 @dbg_error(i8* getelementptr inbounds ([52 x i8], [52 x i8]* @.str, i64 0, i64 0))
%14 = call i32 @exit(i32 1)
unreachable
15: ; preds = %11, %10, %9, %8, %7, %6, %5
%16 = load i32, i32* %2
ret i32 %16
}

LLVM IR (-O2):
@.str = [52 x i8] c"failed to convert SAN piece to user interface piece\00"
@switch.table.ui_piece = [7 x i32] [i32 12, i32 0, i32 2, i32 4, i32 6, i32 8, i32 10]
define i32 @ui_piece(i32 %0) {
%2 = add i32 %0, 1
%3 = icmp ult i32 %2, 7
br i1 %3, label %7, label %4
4: ; preds = %1
%5 = tail call i32 @dbg_error(i8* getelementptr inbounds ([52 x i8], [52 x i8]* @.str, i64 0, i64 0))
%6 = tail call i32 @exit(i32 1)
unreachable
7: ; preds = %1
%8 = sext i32 %2 to i64
%9 = getelementptr inbounds [7 x i32], [7 x i32]* @switch.table.ui_piece, i64 0, i64 %8
%10 = load i32, i32* %9
ret i32 %10
}