int main() {
  int i, *a, b;
#pragma acc parallel loop tile(10)
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(*)
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(10, *)
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(10, *, i)
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile()
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(, 1)
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(, , )
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(1.1)
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(-3)
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(10, -3)
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(-100, 10, 5)
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(1, 2.0, true)
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(*a, 1)
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(1, *a, b)
  for (i = 0; i < 100; i++)
    ;
#pragma acc parallel loop tile(b, 1, *a)
  for (i = 0; i < 100; i++)
    ;
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    112f <main+0x2f>
jmp    1121 <main+0x21>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1112 <main+0x12>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    1153 <main+0x53>
jmp    1145 <main+0x45>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1136 <main+0x36>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    1177 <main+0x77>
jmp    1169 <main+0x69>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    115a <main+0x5a>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    119b <main+0x9b>
jmp    118d <main+0x8d>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    117e <main+0x7e>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    11bf <main+0xbf>
jmp    11b1 <main+0xb1>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    11a2 <main+0xa2>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    11e3 <main+0xe3>
jmp    11d5 <main+0xd5>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    11c6 <main+0xc6>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    1207 <main+0x107>
jmp    11f9 <main+0xf9>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    11ea <main+0xea>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    122b <main+0x12b>
jmp    121d <main+0x11d>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    120e <main+0x10e>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    124f <main+0x14f>
jmp    1241 <main+0x141>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1232 <main+0x132>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    1273 <main+0x173>
jmp    1265 <main+0x165>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1256 <main+0x156>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    1297 <main+0x197>
jmp    1289 <main+0x189>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    127a <main+0x17a>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    12bb <main+0x1bb>
jmp    12ad <main+0x1ad>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    129e <main+0x19e>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    12df <main+0x1df>
jmp    12d1 <main+0x1d1>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    12c2 <main+0x1c2>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    1303 <main+0x203>
jmp    12f5 <main+0x1f5>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    12e6 <main+0x1e6>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    1327 <main+0x227>
jmp    1319 <main+0x219>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    130a <main+0x20a>
movl   $0x0,-0x8(%rbp)
cmpl   $0x64,-0x8(%rbp)
jge    134b <main+0x24b>
jmp    133d <main+0x23d>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    132e <main+0x22e>
xor    %eax,%eax
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
xor    %eax,%eax
ret

LLVM IR (-O0):
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32*
%4 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
br label %5
5: ; preds = %9, %0
%6 = load i32, i32* %2
%7 = icmp slt i32 %6, 100
br i1 %7, label %8, label %12
8: ; preds = %5
br label %9
9: ; preds = %8
%10 = load i32, i32* %2
%11 = add nsw i32 %10, 1
store i32 %11, i32* %2
br label %5
12: ; preds = %5
store i32 0, i32* %2
br label %13
13: ; preds = %17, %12
%14 = load i32, i32* %2
%15 = icmp slt i32 %14, 100
br i1 %15, label %16, label %20
16: ; preds = %13
br label %17
17: ; preds = %16
%18 = load i32, i32* %2
%19 = add nsw i32 %18, 1
store i32 %19, i32* %2
br label %13
20: ; preds = %13
store i32 0, i32* %2
br label %21
21: ; preds = %25, %20
%22 = load i32, i32* %2
%23 = icmp slt i32 %22, 100
br i1 %23, label %24, label %28
24: ; preds = %21
br label %25
25: ; preds = %24
%26 = load i32, i32* %2
%27 = add nsw i32 %26, 1
store i32 %27, i32* %2
br label %21
28: ; preds = %21
store i32 0, i32* %2
br label %29
29: ; preds = %33, %28
%30 = load i32, i32* %2
%31 = icmp slt i32 %30, 100
br i1 %31, label %32, label %36
32: ; preds = %29
br label %33
33: ; preds = %32
%34 = load i32, i32* %2
%35 = add nsw i32 %34, 1
store i32 %35, i32* %2
br label %29
36: ; preds = %29
store i32 0, i32* %2
br label %37
37: ; preds = %41, %36
%38 = load i32, i32* %2
%39 = icmp slt i32 %38, 100
br i1 %39, label %40, label %44
40: ; preds = %37
br label %41
41: ; preds = %40
%42 = load i32, i32* %2
%43 = add nsw i32 %42, 1
store i32 %43, i32* %2
br label %37
44: ; preds = %37
store i32 0, i32* %2
br label %45
45: ; preds = %49, %44
%46 = load i32, i32* %2
%47 = icmp slt i32 %46, 100
br i1 %47, label %48, label %52
48: ; preds = %45
br label %49
49: ; preds = %48
%50 = load i32, i32* %2
%51 = add nsw i32 %50, 1
store i32 %51, i32* %2
br label %45
52: ; preds = %45
store i32 0, i32* %2
br label %53
53: ; preds = %57, %52
%54 = load i32, i32* %2
%55 = icmp slt i32 %54, 100
br i1 %55, label %56, label %60
56: ; preds = %53
br label %57
57: ; preds = %56
%58 = load i32, i32* %2
%59 = add nsw i32 %58, 1
store i32 %59, i32* %2
br label %53
60: ; preds = %53
store i32 0, i32* %2
br label %61
61: ; preds = %65, %60
%62 = load i32, i32* %2
%63 = icmp slt i32 %62, 100
br i1 %63, label %64, label %68
64: ; preds = %61
br label %65
65: ; preds = %64
%66 = load i32, i32* %2
%67 = add nsw i32 %66, 1
store i32 %67, i32* %2
br label %61
68: ; preds = %61
store i32 0, i32* %2
br label %69
69: ; preds = %73, %68
%70 = load i32, i32* %2
%71 = icmp slt i32 %70, 100
br i1 %71, label %72, label %76
72: ; preds = %69
br label %73
73: ; preds = %72
%74 = load i32, i32* %2
%75 = add nsw i32 %74, 1
store i32 %75, i32* %2
br label %69
76: ; preds = %69
store i32 0, i32* %2
br label %77
77: ; preds = %81, %76
%78 = load i32, i32* %2
%79 = icmp slt i32 %78, 100
br i1 %79, label %80, label %84
80: ; preds = %77
br label %81
81: ; preds = %80
%82 = load i32, i32* %2
%83 = add nsw i32 %82, 1
store i32 %83, i32* %2
br label %77
84: ; preds = %77
store i32 0, i32* %2
br label %85
85: ; preds = %89, %84
%86 = load i32, i32* %2
%87 = icmp slt i32 %86, 100
br i1 %87, label %88, label %92
88: ; preds = %85
br label %89
89: ; preds = %88
%90 = load i32, i32* %2
%91 = add nsw i32 %90, 1
store i32 %91, i32* %2
br label %85
92: ; preds = %85
store i32 0, i32* %2
br label %93
93: ; preds = %97, %92
%94 = load i32, i32* %2
%95 = icmp slt i32 %94, 100
br i1 %95, label %96, label %100
96: ; preds = %93
br label %97
97: ; preds = %96
%98 = load i32, i32* %2
%99 = add nsw i32 %98, 1
store i32 %99, i32* %2
br label %93
100: ; preds = %93
store i32 0, i32* %2
br label %101
101: ; preds = %105, %100
%102 = load i32, i32* %2
%103 = icmp slt i32 %102, 100
br i1 %103, label %104, label %108
104: ; preds = %101
br label %105
105: ; preds = %104
%106 = load i32, i32* %2
%107 = add nsw i32 %106, 1
store i32 %107, i32* %2
br label %101
108: ; preds = %101
store i32 0, i32* %2
br label %109
109: ; preds = %113, %108
%110 = load i32, i32* %2
%111 = icmp slt i32 %110, 100
br i1 %111, label %112, label %116
112: ; preds = %109
br label %113
113: ; preds = %112
%114 = load i32, i32* %2
%115 = add nsw i32 %114, 1
store i32 %115, i32* %2
br label %109
116: ; preds = %109
store i32 0, i32* %2
br label %117
117: ; preds = %121, %116
%118 = load i32, i32* %2
%119 = icmp slt i32 %118, 100
br i1 %119, label %120, label %124
120: ; preds = %117
br label %121
121: ; preds = %120
%122 = load i32, i32* %2
%123 = add nsw i32 %122, 1
store i32 %123, i32* %2
br label %117
124: ; preds = %117
store i32 0, i32* %2
br label %125
125: ; preds = %129, %124
%126 = load i32, i32* %2
%127 = icmp slt i32 %126, 100
br i1 %127, label %128, label %132
128: ; preds = %125
br label %129
129: ; preds = %128
%130 = load i32, i32* %2
%131 = add nsw i32 %130, 1
store i32 %131, i32* %2
br label %125
132: ; preds = %125
ret i32 0
}

LLVM IR (-O2):
define i32 @main() {
ret i32 0
}