Split TailDuplicatePass into pre- and post-RA variant; NFC

Split TailDuplicatePass into EarlyTailDuplicate and TailDuplicate. This
avoids playing games with fake pass IDs and using MRI::isSSA() to
determine pre-/post-RA state.

llvm-svn: 322926

1 files changed, 2 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/CodeGen.cpp b/llvm/lib/CodeGen/CodeGen.cpp
index c0d7eb4cf47..40f1599a2fa 100644
--- a/llvm/lib/CodeGen/CodeGen.cpp
+++ b/llvm/lib/CodeGen/CodeGen.cpp
@@ -28,6 +28,7 @@ void llvm::initializeCodeGen(PassRegistry &Registry) {
   initializeDetectDeadLanesPass(Registry);
   initializeDwarfEHPreparePass(Registry);
   initializeEarlyIfConverterPass(Registry);
+  initializeEarlyTailDuplicatePass(Registry);
   initializeExpandISelPseudosPass(Registry);
   initializeExpandMemCmpPassPass(Registry);
   initializeExpandPostRAPass(Registry);
@@ -89,7 +90,7 @@ void llvm::initializeCodeGen(PassRegistry &Registry) {
   initializeStackMapLivenessPass(Registry);
   initializeStackProtectorPass(Registry);
   initializeStackSlotColoringPass(Registry);
-  initializeTailDuplicatePassPass(Registry);
+  initializeTailDuplicatePass(Registry);
   initializeTargetPassConfigPass(Registry);
   initializeTwoAddressInstructionPassPass(Registry);
   initializeUnpackMachineBundlesPass(Registry);