3 files changed, 17 insertions, 67 deletions

diff --git a/polly/include/polly/RegisterPasses.h b/polly/include/polly/RegisterPasses.h
index 26c2059b8a3..0b4a491e8ab 100644
--- a/polly/include/polly/RegisterPasses.h
+++ b/polly/include/polly/RegisterPasses.h
@@ -13,9 +13,18 @@
 
 #ifndef POLLY_REGISTER_PASSES_H
 #define POLLY_REGISTER_PASSES_H
+
+#include "llvm/PassManager.h"
+
 namespace llvm {
 namespace legacy {
 class PassManagerBase;
 }
 }
+
+namespace polly {
+void initializePollyPasses(llvm::PassRegistry &Registry);
+void registerPollyPasses(llvm::PassManagerBase &PM);
+bool shouldEnablePolly();
+}
 #endif
diff --git a/polly/lib/CMakeLists.txt b/polly/lib/CMakeLists.txt
index 3f7aceec8b8..763b4da745c 100644
--- a/polly/lib/CMakeLists.txt
+++ b/polly/lib/CMakeLists.txt
@@ -73,15 +73,10 @@ add_polly_library(LLVMPollyLib
   ${POLLY_PLUTO_FILES}
   )
 
-target_link_libraries(LLVMPollyLib
-  LLVMSupport
-  LLVMScalarOpts
-  LLVMTransformUtils
-  LLVMipo
+add_polly_loadable_module(LLVMPolly
+  PollyModule.cpp
 )
 
-add_polly_loadable_module(LLVMPolly)
-
 if (TARGET intrinsics_gen)
   # Check if we are building as part of an LLVM build
   add_dependencies(LLVMPolly intrinsics_gen)
diff --git a/polly/lib/RegisterPasses.cpp b/polly/lib/RegisterPasses.cpp
index bca1ec3ade4..6d70079bf07 100644
--- a/polly/lib/RegisterPasses.cpp
+++ b/polly/lib/RegisterPasses.cpp
@@ -37,7 +37,8 @@
 #include "llvm/Transforms/Vectorize.h"
 
 using namespace llvm;
-cl::OptionCategory PollyCategory("Polly Options",
+
+cl::OptionCategory PollyCategory("Polly Optionsa",
                                  "Configure the polly loop optimizer");
 
 static cl::opt<bool>
@@ -154,8 +155,8 @@ CFGPrinter("polly-view-cfg",
            cl::desc("Show the Polly CFG right after code generation"),
            cl::Hidden, cl::init(false), cl::cat(PollyCategory));
 
-namespace {
-static void initializePollyPasses(PassRegistry &Registry) {
+namespace polly {
+void initializePollyPasses(PassRegistry &Registry) {
 #ifdef CLOOG_FOUND
   initializeCloogInfoPass(Registry);
   initializeCodeGenerationPass(Registry);
@@ -179,20 +180,6 @@ static void initializePollyPasses(PassRegistry &Registry) {
   initializeTempScopInfoPass(Registry);
 }
 
-/// @brief Initialize Polly passes when library is loaded.
-///
-/// We use the constructor of a statically declared object to initialize the
-/// different Polly passes right after the Polly library is loaded. This ensures
-/// that the Polly passes are available e.g. in the 'opt' tool.
-class StaticInitializer {
-public:
-  StaticInitializer() {
-    PassRegistry &Registry = *PassRegistry::getPassRegistry();
-    initializePollyPasses(Registry);
-  }
-};
-static StaticInitializer InitializeEverything;
-
 /// @brief Register Polly passes such that they form a polyhedral optimizer.
 ///
 /// The individual Polly passes are registered in the pass manager such that
@@ -223,7 +210,7 @@ static StaticInitializer InitializeEverything;
 /// Polly supports both CLooG (http://www.cloog.org) as well as the isl internal
 /// code generator. For the moment, the CLooG code generator is enabled by
 /// default.
-static void registerPollyPasses(llvm::PassManagerBase &PM) {
+void registerPollyPasses(llvm::PassManagerBase &PM) {
   registerCanonicalicationPasses(PM, SCEVCodegen);
 
   PM.add(polly::createScopInfoPass());
@@ -289,7 +276,7 @@ static void registerPollyPasses(llvm::PassManagerBase &PM) {
     PM.add(llvm::createCFGPrinterPass());
 }
 
-static bool shouldEnablePolly() {
+bool shouldEnablePolly() {
   if (PollyOnlyPrinter || PollyPrinter || PollyOnlyViewer || PollyViewer)
     PollyTrackFailures = true;
 
@@ -299,45 +286,4 @@ static bool shouldEnablePolly() {
 
   return PollyEnabled;
 }
-
-static void
-registerPollyEarlyAsPossiblePasses(const llvm::PassManagerBuilder &Builder,
-                                   llvm::PassManagerBase &PM) {
-
-  if (!shouldEnablePolly())
-    return;
-
-  registerPollyPasses(PM);
 }
-
-/// @brief Register Polly to be available as an optimizer
-///
-/// We currently register Polly such that it runs as early as possible. This has
-/// several implications:
-///
-///   1) We need to schedule more canonicalization passes
-///
-///   As nothing is run before Polly, it is necessary to run a set of preparing
-///   transformations before Polly to canonicalize the LLVM-IR and to allow
-///   Polly to detect and understand the code.
-///
-///   2) LICM and LoopIdiom pass have not yet been run
-///
-///   Loop invariant code motion as well as the loop idiom recognition pass make
-///   it more difficult for Polly to transform code. LICM may introduce
-///   additional data dependences that are hard to eliminate and the loop idiom
-///   recognition pass may introduce calls to memset that we currently do not
-///   understand. By running Polly early enough (meaning before these passes) we
-///   avoid difficulties that may be introduced by these passes.
-///
-///   3) We get the full -O3 optimization sequence after Polly
-///
-///   The LLVM-IR that is generated by Polly has been optimized on a high level,
-///   but it may be rather inefficient on the lower/scalar level. By scheduling
-///   Polly before all other passes, we have the full sequence of -O3
-///   optimizations behind us, such that inefficiencies on the low level can
-///   be optimized away.
-static llvm::RegisterStandardPasses
-RegisterPollyOptimizer(llvm::PassManagerBuilder::EP_EarlyAsPossible,
-                       registerPollyEarlyAsPossiblePasses);
-} // end of anonymous namespace.