Change the semantics of is*Parallel

  The functions isParallel, isInnermostParallel and IsOutermostParallel in
  IslAstInfo will now return true even in the presence of broken reductions.
  To compensate for this change the negated result of isReductionParallel can
  be used.

llvm-svn: 214488

1 files changed, 4 insertions, 2 deletions

diff --git a/polly/lib/CodeGen/IslCodeGeneration.cpp b/polly/lib/CodeGen/IslCodeGeneration.cpp
index 641b7876ee3..90b73214bbe 100644
--- a/polly/lib/CodeGen/IslCodeGeneration.cpp
+++ b/polly/lib/CodeGen/IslCodeGeneration.cpp
@@ -314,7 +314,8 @@ void IslNodeBuilder::createForSequential(__isl_take isl_ast_node *For) {
   CmpInst::Predicate Predicate;
   bool Parallel;
 
-  Parallel = IslAstInfo::isInnermostParallel(For);
+  Parallel = IslAstInfo::isInnermostParallel(For) &&
+             !IslAstInfo::isReductionParallel(For);
 
   Body = isl_ast_node_for_get_body(For);
 
@@ -366,7 +367,8 @@ void IslNodeBuilder::createForSequential(__isl_take isl_ast_node *For) {
 void IslNodeBuilder::createFor(__isl_take isl_ast_node *For) {
   bool Vector = PollyVectorizerChoice != VECTORIZER_NONE;
 
-  if (Vector && IslAstInfo::isInnermostParallel(For)) {
+  if (Vector && IslAstInfo::isInnermostParallel(For) &&
+      !IslAstInfo::isReductionParallel(For)) {
     int VectorWidth = getNumberOfIterations(For);
     if (1 < VectorWidth && VectorWidth <= 16) {
       createForVector(For, VectorWidth);