#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 */
typedef int uint32_t;

/* Variables and functions */
const char *decode_blend_fact(uint32_t op) {
  switch (op & 0xf) {
  case 1:
    return "zero";
  case 2:
    return "one";
  case 3:
    return "src_colr";
  case 4:
    return "inv_src_colr";
  case 5:
    return "src_alpha";
  case 6:
    return "inv_src_alpha";
  case 7:
    return "dst_alpha";
  case 8:
    return "inv_dst_alpha";
  case 9:
    return "dst_colr";
  case 10:
    return "inv_dst_colr";
  case 11:
    return "src_alpha_sat";
  case 12:
    return "cnst_colr";
  case 13:
    return "inv_cnst_colr";
  case 14:
    return "cnst_alpha";
  case 15:
    return "inv_const_alpha";
  }
  return "";
}


x86 assembly (clang, -O0):
<decode_blend_fact>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
mov    -0xc(%rbp),%eax
and    $0xf,%eax
add    $0xffffffff,%eax
mov    %eax,%ecx
mov    %rcx,-0x18(%rbp)
sub    $0xe,%eax
ja     1223 <decode_blend_fact+0x123>
mov    -0x18(%rbp),%rax
lea    0xed6(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xf02(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xef7(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xeef(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xedb(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xedc(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xec8(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xeca(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xeb6(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xeb8(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xea4(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xea1(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xea3(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xe8f(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xe8d(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xe88(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    122e <decode_blend_fact+0x12e>
lea    0xe35(%rip),%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<decode_blend_fact>:
and    $0xf,%edi
add    $0xffffffff,%edi
cmp    $0xe,%edi
ja     111d <decode_blend_fact+0x1d>
movslq %edi,%rax
lea    0xf63(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
lea    0xeff(%rip),%rax
ret

LLVM IR (-O0):
@.str = [5 x i8] c"zero\00"
@.str.1 = [4 x i8] c"one\00"
@.str.2 = [9 x i8] c"src_colr\00"
@.str.3 = [13 x i8] c"inv_src_colr\00"
@.str.4 = [10 x i8] c"src_alpha\00"
@.str.5 = [14 x i8] c"inv_src_alpha\00"
@.str.6 = [10 x i8] c"dst_alpha\00"
@.str.7 = [14 x i8] c"inv_dst_alpha\00"
@.str.8 = [9 x i8] c"dst_colr\00"
@.str.9 = [13 x i8] c"inv_dst_colr\00"
@.str.10 = [14 x i8] c"src_alpha_sat\00"
@.str.11 = [10 x i8] c"cnst_colr\00"
@.str.12 = [14 x i8] c"inv_cnst_colr\00"
@.str.13 = [11 x i8] c"cnst_alpha\00"
@.str.14 = [16 x i8] c"inv_const_alpha\00"
@.str.15 = [1 x i8] zeroinitializer
define i8* @decode_blend_fact(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
%5 = and i32 %4, 15
switch i32 %5, label %21 [
i32 1, label %6
i32 2, label %7
i32 3, label %8
i32 4, label %9
i32 5, label %10
i32 6, label %11
i32 7, label %12
i32 8, label %13
i32 9, label %14
i32 10, label %15
i32 11, label %16
i32 12, label %17
i32 13, label %18
i32 14, label %19
i32 15, label %20
]
6: ; preds = %1
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i8** %2
br label %22
7: ; preds = %1
store i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %22
8: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %22
9: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %22
10: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %22
11: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.5, i64 0, i64 0), i8** %2
br label %22
12: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.6, i64 0, i64 0), i8** %2
br label %22
13: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.7, i64 0, i64 0), i8** %2
br label %22
14: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.8, i64 0, i64 0), i8** %2
br label %22
15: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.9, i64 0, i64 0), i8** %2
br label %22
16: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.10, i64 0, i64 0), i8** %2
br label %22
17: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.11, i64 0, i64 0), i8** %2
br label %22
18: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.12, i64 0, i64 0), i8** %2
br label %22
19: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.13, i64 0, i64 0), i8** %2
br label %22
20: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.14, i64 0, i64 0), i8** %2
br label %22
21: ; preds = %1
store i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.15, i64 0, i64 0), i8** %2
br label %22
22: ; preds = %21, %20, %19, %18, %17, %16, %15, %14, %13, %12, %11, %10, %9, %8, %7, %6
%23 = load i8*, i8** %2
ret i8* %23
}

LLVM IR (-O2):
@.str = [5 x i8] c"zero\00"
@.str.1 = [4 x i8] c"one\00"
@.str.2 = [9 x i8] c"src_colr\00"
@.str.3 = [13 x i8] c"inv_src_colr\00"
@.str.4 = [10 x i8] c"src_alpha\00"
@.str.5 = [14 x i8] c"inv_src_alpha\00"
@.str.6 = [10 x i8] c"dst_alpha\00"
@.str.7 = [14 x i8] c"inv_dst_alpha\00"
@.str.8 = [9 x i8] c"dst_colr\00"
@.str.9 = [13 x i8] c"inv_dst_colr\00"
@.str.10 = [14 x i8] c"src_alpha_sat\00"
@.str.11 = [10 x i8] c"cnst_colr\00"
@.str.12 = [14 x i8] c"inv_cnst_colr\00"
@.str.13 = [11 x i8] c"cnst_alpha\00"
@.str.14 = [16 x i8] c"inv_const_alpha\00"
@.str.15 = [1 x i8] zeroinitializer
@reltable.decode_blend_fact = [15 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @.str to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([4 x i8]* @.str.1 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @.str.2 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([13 x i8]* @.str.3 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @.str.4 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([14 x i8]* @.str.5 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @.str.6 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([14 x i8]* @.str.7 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @.str.8 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([13 x i8]* @.str.9 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([14 x i8]* @.str.10 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @.str.11 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([14 x i8]* @.str.12 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([11 x i8]* @.str.13 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([16 x i8]* @.str.14 to i64), i64 ptrtoint ([15 x i32]* @reltable.decode_blend_fact to i64)) to i32)]
define i8* @decode_blend_fact(i32 %0) {
%2 = and i32 %0, 15
%3 = add nsw i32 %2, -1
%4 = icmp ult i32 %3, 15
br i1 %4, label %5, label %9
5: ; preds = %1
%6 = sext i32 %3 to i64
%7 = shl i64 %6, 2
%8 = call i8* @llvm.load.relative.i64(i8* bitcast ([15 x i32]* @reltable.decode_blend_fact to i8*), i64 %7)
br label %9
9: ; preds = %1, %5
%10 = phi i8* [ %8, %5 ], [ getelementptr inbounds ([1 x i8], [1 x i8]* @.str.15, i64 0, i64 0), %1 ]
ret i8* %10
}