clang/test/PCH/delayed-template-with-pragma.cpp

   1 // RUN: %clang_cc1 -fopenmp -emit-pch -o %t.pch %s
   2 // RUN: %clang_cc1 -fopenmp -fdelayed-template-parsing -emit-pch -o %t.delayed.pch %s
   3 // RUN: %clang_cc1 -DMAIN_FILE -fopenmp -include-pch %t.pch \
   4 // RUN:   -emit-llvm -o - %s -fopenmp | FileCheck %s
   5 // RUN: %clang_cc1 -DMAIN_FILE -fopenmp -fdelayed-template-parsing -verify \
   6 // RUN:   -Wunused-variable -include-pch %t.delayed.pch \
   7 // RUN:   -emit-llvm -o - %s | FileCheck %s
   8
   9 #ifndef MAIN_FILE
  10 template <typename T>
  11 void a(T t) {
  12   #pragma clang loop unroll_count(4)
  13   for(int i=0;i<8;++i) {}
  14   #pragma omp simd
  15   for(int i=0;i<8;++i) {}
  16   {
  17     int x, y, z, zz;
  18     #pragma unused(x)
  19     #pragma unused(y, z)
  20   }
  21 }
  22 #else
  23 // CHECK: !llvm.loop [[LOOP1:!.*]]
  24 // CHECK: !llvm.loop [[LOOP2:!.*]]
  25 // CHECK: [[LOOP1]] = distinct !{[[LOOP1]], [[LOOP1A:!.*]], [[LOOP1B:!.*]]}
  26 // CHECK: [[LOOP1A]] = !{!"llvm.loop.mustprogress"}
  27 // CHECK: [[LOOP1B]] = !{!"llvm.loop.unroll.count", i32 4}
  28 // CHECK: [[LOOP2]] = distinct !{[[LOOP2]], [[LOOP2A:!.*]], [[LOOP2B:!.*]]}
  29 // CHECK: [[LOOP2A]] = !{!"llvm.loop.parallel_accesses", [[LOOP2C:!.*]]}
  30 // CHECK: [[LOOP2B]] = !{!"llvm.loop.vectorize.enable", i1 true}
  31 // expected-warning@17 {{unused variable 'zz'}}
  32 void foo()
  33 {
  34   a(1);
  35 }
  36 #endif