Add two new pragmas for controlling software pipelining optimizations.

This patch adds #pragma clang loop pipeline and #pragma clang loop pipeline_initiation_interval for debugging or reducing compile time purposes. It is possible to disable SWP for concrete loops to save compilation time or to find bugs by not doing SWP to certain loops. It is possible to set value of initiation interval to concrete number to save compilation time by not doing extra pipeliner passes or to check created schedule for specific initiation interval.

Patch by Alexey Lapshin.

llvm-svn: 350414

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/test/Parser/pragma-unroll-and-jam.cpp b/clang/test/Parser/pragma-unroll-and-jam.cpp
index 8452156f69c..ef1867aa195 100644
--- a/clang/test/Parser/pragma-unroll-and-jam.cpp
+++ b/clang/test/Parser/pragma-unroll-and-jam.cpp
@@ -67,7 +67,7 @@ void test(int *List, int Length, int Value) {
   }
 
 // pragma clang unroll_and_jam is disabled for the moment
-/* expected-error {{invalid option 'unroll_and_jam'; expected vectorize, vectorize_width, interleave, interleave_count, unroll, unroll_count, or distribute}} */ #pragma clang loop unroll_and_jam(4)
+/* expected-error {{invalid option 'unroll_and_jam'; expected vectorize, vectorize_width, interleave, interleave_count, unroll, unroll_count, pipeline, pipeline_initiation_interval, or distribute}} */ #pragma clang loop unroll_and_jam(4)
   for (int i = 0; i < Length; i++) {
     for (int j = 0; j < Length; j++) {
       List[i * Length + j] = Value;