Detection: Allow to filter the regions that can be detected
llvm-svn: 200224
diff --git a/polly/lib/Analysis/ScopDetection.cpp b/polly/lib/Analysis/ScopDetection.cpp
index 4247e27..9456ab3 100644
--- a/polly/lib/Analysis/ScopDetection.cpp
+++ b/polly/lib/Analysis/ScopDetection.cpp
@@ -84,6 +84,13 @@
cl::value_desc("function-name"), cl::ValueRequired, cl::init(""),
cl::cat(PollyCategory));
+static cl::opt<std::string>
+OnlyRegion("polly-only-region",
+ cl::desc("Only run on certain regions (The provided identifier must "
+ "appear in the name of the region's entry block"),
+ cl::value_desc("identifier"), cl::ValueRequired, cl::init(""),
+ cl::cat(PollyCategory));
+
static cl::opt<bool>
IgnoreAliasing("polly-ignore-aliasing",
cl::desc("Ignore possible aliasing of the array bases"),
@@ -626,12 +633,19 @@
DEBUG(dbgs() << "Checking region: " << R.getNameStr() << "\n\t");
- // The toplevel region is no valid region.
if (R.isTopLevelRegion()) {
DEBUG(dbgs() << "Top level region is invalid"; dbgs() << "\n");
return false;
}
+ if (!R.getEntry()->getName().count(OnlyRegion)) {
+ DEBUG({
+ dbgs() << "Region entry does not match -polly-region-only";
+ dbgs() << "\n";
+ });
+ return false;
+ }
+
if (!R.getEnteringBlock()) {
BasicBlock *entry = R.getEntry();
Loop *L = LI->getLoopFor(entry);