Allow constant expressions in pragma loop hints.

Previously loop hints such as #pragma loop vectorize_width(#) required a constant. This patch allows a constant expression to be used as well. Such as a non-type template parameter or an expression (2 * c + 1).

Reviewed by Richard Smith


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@219589 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 15 insertions, 0 deletions

diff --git a/test/Misc/ast-print-pragmas.cpp b/test/Misc/ast-print-pragmas.cpp
index 25421fcd0c..23f533fc37 100644
--- a/test/Misc/ast-print-pragmas.cpp
+++ b/test/Misc/ast-print-pragmas.cpp
@@ -38,3 +38,18 @@ void test(int *List, int Length) {
     i++;
   }
 }
+
+template <int V, int I>
+void test_nontype_template_param(int *List, int Length) {
+#pragma clang loop vectorize_width(V) interleave_count(I)
+  for (int i = 0; i < Length; i++) {
+    List[i] = i;
+  }
+}
+
+// CHECK: #pragma clang loop interleave_count(I)
+// CHECK: #pragma clang loop vectorize_width(V)
+
+void test_templates(int *List, int Length) {
+  test_nontype_template_param<2, 4>(List, Length);
+}