clang/test/Parser/pragma-unroll-and-jam.cpp

   1 // RUN: %clang_cc1 -std=c++11 -verify %s
   2
   3 // Note that this puts the expected lines before the directives to work around
   4 // limitations in the -verify mode.
   5
   6 void test(int *List, int Length, int Value) {
   7   int i = 0;
   8
   9 #pragma unroll_and_jam
  10   for (int i = 0; i < Length; i++) {
  11     for (int j = 0; j < Length; j++) {
  12       List[i * Length + j] = Value;
  13     }
  14   }
  15
  16 #pragma nounroll_and_jam
  17   for (int i = 0; i < Length; i++) {
  18     for (int j = 0; j < Length; j++) {
  19       List[i * Length + j] = Value;
  20     }
  21   }
  22
  23 #pragma unroll_and_jam 4
  24   for (int i = 0; i < Length; i++) {
  25     for (int j = 0; j < Length; j++) {
  26       List[i * Length + j] = Value;
  27     }
  28   }
  29
  30 /* expected-error {{expected ')'}} */ #pragma unroll_and_jam(4
  31 /* expected-error {{missing argument; expected an integer value}} */ #pragma unroll_and_jam()
  32 /* expected-warning {{extra tokens at end of '#pragma unroll_and_jam'}} */ #pragma unroll_and_jam 1 2
  33   for (int i = 0; i < Length; i++) {
  34     for (int j = 0; j < Length; j++) {
  35       List[i * Length + j] = Value;
  36     }
  37   }
  38
  39 /* expected-warning {{extra tokens at end of '#pragma nounroll_and_jam'}} */ #pragma nounroll_and_jam 1
  40   for (int i = 0; i < Length; i++) {
  41     for (int j = 0; j < Length; j++) {
  42       List[i * Length + j] = Value;
  43     }
  44   }
  45
  46 #pragma unroll_and_jam
  47 /* expected-error {{expected a for, while, or do-while loop to follow '#pragma unroll_and_jam'}} */ int j = Length;
  48 #pragma unroll_and_jam 4
  49 /* expected-error {{expected a for, while, or do-while loop to follow '#pragma unroll_and_jam'}} */ int k = Length;
  50 #pragma nounroll_and_jam
  51 /* expected-error {{expected a for, while, or do-while loop to follow '#pragma nounroll_and_jam'}} */ int l = Length;
  52
  53 #pragma unroll_and_jam 4
  54 /* expected-error {{incompatible directives '#pragma nounroll_and_jam' and '#pragma unroll_and_jam(4)'}} */ #pragma nounroll_and_jam
  55   for (int i = 0; i < Length; i++) {
  56     for (int j = 0; j < Length; j++) {
  57       List[i * Length + j] = Value;
  58     }
  59   }
  60
  61 #pragma nounroll_and_jam
  62 #pragma unroll(4)
  63   for (int i = 0; i < Length; i++) {
  64     for (int j = 0; j < Length; j++) {
  65       List[i * Length + j] = Value;
  66     }
  67   }
  68
  69 // pragma clang unroll_and_jam is disabled for the moment
  70 /* expected-error {{invalid option 'unroll_and_jam'; expected vectorize, vectorize_width, interleave, interleave_count, unroll, unroll_count, pipeline, pipeline_initiation_interval, vectorize_predicate, or distribute}} */ #pragma clang loop unroll_and_jam(4)
  71   for (int i = 0; i < Length; i++) {
  72     for (int j = 0; j < Length; j++) {
  73       List[i * Length + j] = Value;
  74     }
  75   }
  76
  77 #pragma unroll_and_jam
  78 /* expected-error {{expected statement}} */ }