RegAllocGreedy: Properly initialize this pass, so that -run-pass will…

… work

Reviewers: qcolombet, MatzeB

Subscribers: wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D26572

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286895 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/Passes.h

@@ -124,6 +124,9 @@ namespace llvm {
   // instruction and update the MachineFunctionInfo with that information.
   extern char &ShrinkWrapID;
 
+  /// Greedy register allocator.
+  extern char &RAGreedyID;
+
   /// VirtRegRewriter pass. Rewrite virtual registers to physical registers as
   /// assigned in VirtRegMap.
   extern char &VirtRegRewriterID;

include/llvm/InitializePasses.h

@@ -126,6 +126,7 @@ void initializeEarlyIfConverterPass(PassRegistry&);
 void initializeEdgeBundlesPass(PassRegistry&);
 void initializeEfficiencySanitizerPass(PassRegistry&);
 void initializeEliminateAvailableExternallyLegacyPassPass(PassRegistry &);
+void initializeRAGreedyPass(PassRegistry&);
 void initializeGVNHoistLegacyPassPass(PassRegistry &);
 void initializeExpandISelPseudosPass(PassRegistry&);
 void initializeExpandPostRAPass(PassRegistry&);

lib/CodeGen/CodeGen.cpp

@@ -71,6 +71,7 @@ void llvm::initializeCodeGen(PassRegistry &Registry) {
   initializePostRASchedulerPass(Registry);
   initializePreISelIntrinsicLoweringLegacyPassPass(Registry);
   initializeProcessImplicitDefsPass(Registry);
+  initializeRAGreedyPass(Registry);
   initializeRegisterCoalescerPass(Registry);
   initializeRenameIndependentSubregsPass(Registry);
   initializeShrinkWrapPass(Registry);

lib/CodeGen/RegAllocGreedy.cpp

@@ -423,6 +423,24 @@ class RAGreedy : public MachineFunctionPass,
 } // end anonymous namespace
 
 char RAGreedy::ID = 0;
+char &llvm::RAGreedyID = RAGreedy::ID;
+
+INITIALIZE_PASS_BEGIN(RAGreedy, "greedy",
+                "Greedy Register Allocator", false, false)
+INITIALIZE_PASS_DEPENDENCY(LiveDebugVariables)
+INITIALIZE_PASS_DEPENDENCY(SlotIndexes)
+INITIALIZE_PASS_DEPENDENCY(LiveIntervals)
+INITIALIZE_PASS_DEPENDENCY(RegisterCoalescer)
+INITIALIZE_PASS_DEPENDENCY(MachineScheduler)
+INITIALIZE_PASS_DEPENDENCY(LiveStacks)
+INITIALIZE_PASS_DEPENDENCY(MachineDominatorTree)
+INITIALIZE_PASS_DEPENDENCY(MachineLoopInfo)
+INITIALIZE_PASS_DEPENDENCY(VirtRegMap)
+INITIALIZE_PASS_DEPENDENCY(LiveRegMatrix)
+INITIALIZE_PASS_DEPENDENCY(EdgeBundles)
+INITIALIZE_PASS_DEPENDENCY(SpillPlacement)
+INITIALIZE_PASS_END(RAGreedy, "greedy",
+                "Greedy Register Allocator", false, false)
 
 #ifndef NDEBUG
 const char *const RAGreedy::StageName[] = {
@@ -446,19 +464,6 @@ FunctionPass* llvm::createGreedyRegisterAllocator() {
 }
 
 RAGreedy::RAGreedy(): MachineFunctionPass(ID) {
-  initializeLiveDebugVariablesPass(*PassRegistry::getPassRegistry());
-  initializeSlotIndexesPass(*PassRegistry::getPassRegistry());
-  initializeLiveIntervalsPass(*PassRegistry::getPassRegistry());
-  initializeSlotIndexesPass(*PassRegistry::getPassRegistry());
-  initializeRegisterCoalescerPass(*PassRegistry::getPassRegistry());
-  initializeMachineSchedulerPass(*PassRegistry::getPassRegistry());
-  initializeLiveStacksPass(*PassRegistry::getPassRegistry());
-  initializeMachineDominatorTreePass(*PassRegistry::getPassRegistry());
-  initializeMachineLoopInfoPass(*PassRegistry::getPassRegistry());
-  initializeVirtRegMapPass(*PassRegistry::getPassRegistry());
-  initializeLiveRegMatrixPass(*PassRegistry::getPassRegistry());
-  initializeEdgeBundlesPass(*PassRegistry::getPassRegistry());
-  initializeSpillPlacementPass(*PassRegistry::getPassRegistry());
 }
 
 void RAGreedy::getAnalysisUsage(AnalysisUsage &AU) const {

test/CodeGen/MIR/Generic/runPass.mir

@@ -0,0 +1,11 @@
+# RUN: llc -run-pass=greedy -debug-pass=Arguments -o - %s 2>&1 | FileCheck %s
+
+# Check that passes are initialized correctly, so that it's possible to
+# use -run-pass.
+
+---
+# CHECK: name: foo
+name: foo
+body: |
+  bb.0:
+...