Move Pass registration into polly library

This ensures that the polly passes get properly registered both, when using
polly as a loadable module and when directly linking it into clang/opt/bugpoint.

llvm-svn: 204255

1 files changed, 0 insertions, 41 deletions

diff --git a/polly/lib/Polly.cpp b/polly/lib/Polly.cpp
index 5aba051bfbf..c879fd991a1 100644
--- a/polly/lib/Polly.cpp
+++ b/polly/lib/Polly.cpp
@@ -27,45 +27,4 @@ public:
   }
 };
 static StaticInitializer InitializeEverything;
-
-static void
-registerPollyEarlyAsPossiblePasses(const llvm::PassManagerBuilder &Builder,
-                                   llvm::PassManagerBase &PM) {
-
-  if (!polly::shouldEnablePolly())
-    return;
-
-  polly::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.