void test_linear() {
  int i;
#pragma omp target
#pragma omp teams
#pragma omp distribute simd linear(
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute simd linear(,
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute simd linear(, )
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute simd linear()
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute simd linear(int)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute simd linear(0)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute simd linear(x)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute simd linear(x, y)
  for (i = 0; i < 16; ++i)
    ;
#pragma omp target
#pragma omp teams
#pragma omp distribute simd linear(x, y, z)
  for (i = 0; i < 16; ++i)
    ;
}


x86 assembly (clang, -O0):
<test_linear>:
push   %rbp
mov    %rsp,%rbp
movl   $0x0,-0x4(%rbp)
cmpl   $0x10,-0x4(%rbp)
jge    1128 <test_linear+0x28>
jmp    111a <test_linear+0x1a>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    110b <test_linear+0xb>
movl   $0x0,-0x4(%rbp)
cmpl   $0x10,-0x4(%rbp)
jge    114c <test_linear+0x4c>
jmp    113e <test_linear+0x3e>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    112f <test_linear+0x2f>
movl   $0x0,-0x4(%rbp)
cmpl   $0x10,-0x4(%rbp)
jge    1170 <test_linear+0x70>
jmp    1162 <test_linear+0x62>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    1153 <test_linear+0x53>
movl   $0x0,-0x4(%rbp)
cmpl   $0x10,-0x4(%rbp)
jge    1194 <test_linear+0x94>
jmp    1186 <test_linear+0x86>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    1177 <test_linear+0x77>
movl   $0x0,-0x4(%rbp)
cmpl   $0x10,-0x4(%rbp)
jge    11b8 <test_linear+0xb8>
jmp    11aa <test_linear+0xaa>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    119b <test_linear+0x9b>
movl   $0x0,-0x4(%rbp)
cmpl   $0x10,-0x4(%rbp)
jge    11dc <test_linear+0xdc>
jmp    11ce <test_linear+0xce>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    11bf <test_linear+0xbf>
movl   $0x0,-0x4(%rbp)
cmpl   $0x10,-0x4(%rbp)
jge    1200 <test_linear+0x100>
jmp    11f2 <test_linear+0xf2>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    11e3 <test_linear+0xe3>
movl   $0x0,-0x4(%rbp)
cmpl   $0x10,-0x4(%rbp)
jge    1224 <test_linear+0x124>
jmp    1216 <test_linear+0x116>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    1207 <test_linear+0x107>
movl   $0x0,-0x4(%rbp)
cmpl   $0x10,-0x4(%rbp)
jge    1248 <test_linear+0x148>
jmp    123a <test_linear+0x13a>
mov    -0x4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x4(%rbp)
jmp    122b <test_linear+0x12b>
pop    %rbp
ret

x86 assembly (clang, -O2):
<test_linear>:
ret

LLVM IR (-O0):
define void @test_linear() {
%1 = alloca i32
store i32 0, i32* %1
br label %2
2: ; preds = %6, %0
%3 = load i32, i32* %1
%4 = icmp slt i32 %3, 16
br i1 %4, label %5, label %9
5: ; preds = %2
br label %6
6: ; preds = %5
%7 = load i32, i32* %1
%8 = add nsw i32 %7, 1
store i32 %8, i32* %1
br label %2
9: ; preds = %2
store i32 0, i32* %1
br label %10
10: ; preds = %14, %9
%11 = load i32, i32* %1
%12 = icmp slt i32 %11, 16
br i1 %12, label %13, label %17
13: ; preds = %10
br label %14
14: ; preds = %13
%15 = load i32, i32* %1
%16 = add nsw i32 %15, 1
store i32 %16, i32* %1
br label %10
17: ; preds = %10
store i32 0, i32* %1
br label %18
18: ; preds = %22, %17
%19 = load i32, i32* %1
%20 = icmp slt i32 %19, 16
br i1 %20, label %21, label %25
21: ; preds = %18
br label %22
22: ; preds = %21
%23 = load i32, i32* %1
%24 = add nsw i32 %23, 1
store i32 %24, i32* %1
br label %18
25: ; preds = %18
store i32 0, i32* %1
br label %26
26: ; preds = %30, %25
%27 = load i32, i32* %1
%28 = icmp slt i32 %27, 16
br i1 %28, label %29, label %33
29: ; preds = %26
br label %30
30: ; preds = %29
%31 = load i32, i32* %1
%32 = add nsw i32 %31, 1
store i32 %32, i32* %1
br label %26
33: ; preds = %26
store i32 0, i32* %1
br label %34
34: ; preds = %38, %33
%35 = load i32, i32* %1
%36 = icmp slt i32 %35, 16
br i1 %36, label %37, label %41
37: ; preds = %34
br label %38
38: ; preds = %37
%39 = load i32, i32* %1
%40 = add nsw i32 %39, 1
store i32 %40, i32* %1
br label %34
41: ; preds = %34
store i32 0, i32* %1
br label %42
42: ; preds = %46, %41
%43 = load i32, i32* %1
%44 = icmp slt i32 %43, 16
br i1 %44, label %45, label %49
45: ; preds = %42
br label %46
46: ; preds = %45
%47 = load i32, i32* %1
%48 = add nsw i32 %47, 1
store i32 %48, i32* %1
br label %42
49: ; preds = %42
store i32 0, i32* %1
br label %50
50: ; preds = %54, %49
%51 = load i32, i32* %1
%52 = icmp slt i32 %51, 16
br i1 %52, label %53, label %57
53: ; preds = %50
br label %54
54: ; preds = %53
%55 = load i32, i32* %1
%56 = add nsw i32 %55, 1
store i32 %56, i32* %1
br label %50
57: ; preds = %50
store i32 0, i32* %1
br label %58
58: ; preds = %62, %57
%59 = load i32, i32* %1
%60 = icmp slt i32 %59, 16
br i1 %60, label %61, label %65
61: ; preds = %58
br label %62
62: ; preds = %61
%63 = load i32, i32* %1
%64 = add nsw i32 %63, 1
store i32 %64, i32* %1
br label %58
65: ; preds = %58
store i32 0, i32* %1
br label %66
66: ; preds = %70, %65
%67 = load i32, i32* %1
%68 = icmp slt i32 %67, 16
br i1 %68, label %69, label %73
69: ; preds = %66
br label %70
70: ; preds = %69
%71 = load i32, i32* %1
%72 = add nsw i32 %71, 1
store i32 %72, i32* %1
br label %66
73: ; preds = %66
ret void
}

LLVM IR (-O2):
define void @test_linear() {
ret void
}