clang/test/CodeGenCXX/pragma-pipeline.cpp

   1 // RUN: %clang_cc1 -triple hexagon -std=c++11 -emit-llvm -o - %s | FileCheck %s
   2
   3 void pipeline_disabled(int *List, int Length, int Value) {
   4 // CHECK-LABEL: define {{.*}} @_Z17pipeline_disabled
   5 #pragma clang loop pipeline(disable)
   6   for (int i = 0; i < Length; i++) {
   7     // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_1:.*]]
   8     List[i] = Value;
   9   }
  10 }
  11
  12 void pipeline_not_disabled(int *List, int Length, int Value) {
  13   // CHECK-LABEL: define {{.*}} @_Z21pipeline_not_disabled
  14   for (int i = 0; i < Length; i++) {
  15     List[i] = Value;
  16   }
  17 }
  18
  19 void pipeline_initiation_interval(int *List, int Length, int Value) {
  20 // CHECK-LABEL: define {{.*}} @_Z28pipeline_initiation_interval
  21 #pragma clang loop pipeline_initiation_interval(10)
  22   for (int i = 0; i < Length; i++) {
  23     // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_3:.*]]
  24     List[i] = Value;
  25   }
  26 }
  27
  28 void pipeline_disabled_on_nested_loop(int *List, int Length, int Value) {
  29   // CHECK-LABEL: define {{.*}} @_Z32pipeline_disabled_on_nested_loop
  30   for (int i = 0; i < Length; i++) {
  31 #pragma clang loop pipeline(disable)
  32     for (int j = 0; j < Length; j++) {
  33       // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_4:.*]]
  34       List[i * Length + j] = Value;
  35     }
  36   }
  37 }
  38
  39 // CHECK: ![[LOOP_1]] = distinct !{![[LOOP_1]], [[MP:![0-9]+]], ![[PIPELINE_DISABLE:.*]]}
  40 // CHECK: ![[PIPELINE_DISABLE]] = !{!"llvm.loop.pipeline.disable", i1 true}
  41
  42 // CHECK-NOT:llvm.loop.pipeline
  43
  44 // CHECK: ![[LOOP_3]] = distinct !{![[LOOP_3]], [[MP]], ![[PIPELINE_II_10:.*]]}
  45 // CHECK: ![[PIPELINE_II_10]] = !{!"llvm.loop.pipeline.initiationinterval", i32 10}
  46
  47 // CHECK: ![[LOOP_4]] = distinct !{![[LOOP_4]], [[MP]], ![[PIPELINE_DISABLE]]}