[SystemZ] Properly register machine passes.

Registering the passes enables use of -stop-before=/-stop-after
options.

Reviewed By: uweigand

Differential Revision: https://reviews.llvm.org/D117823

Author: redstar

llvm/lib/Target/SystemZ/SystemZ.h

@@ -20,6 +20,7 @@
 namespace llvm {
 class SystemZTargetMachine;
 class FunctionPass;
+class PassRegistry;
 
 namespace SystemZ {
 // Condition-code mask values.
@@ -196,6 +197,15 @@ FunctionPass *createSystemZLDCleanupPass(SystemZTargetMachine &TM);
 FunctionPass *createSystemZCopyPhysRegsPass(SystemZTargetMachine &TM);
 FunctionPass *createSystemZPostRewritePass(SystemZTargetMachine &TM);
 FunctionPass *createSystemZTDCPass();
+
+void initializeSystemZElimComparePass(PassRegistry &);
+void initializeSystemZShortenInstPass(PassRegistry &);
+void initializeSystemZLongBranchPass(PassRegistry &);
+void initializeSystemZLDCleanupPass(PassRegistry &);
+void initializeSystemZCopyPhysRegsPass(PassRegistry &);
+void initializeSystemZPostRewritePass(PassRegistry &);
+void initializeSystemZTDCPassPass(PassRegistry &);
+
 } // end namespace llvm
 
 #endif

llvm/lib/Target/SystemZ/SystemZCopyPhysRegs.cpp

@@ -25,12 +25,6 @@
 
 using namespace llvm;
 
-#define SYSTEMZ_COPYPHYSREGS_NAME "SystemZ Copy Physregs"
-
-namespace llvm {
-  void initializeSystemZCopyPhysRegsPass(PassRegistry&);
-}
-
 namespace {
 
 class SystemZCopyPhysRegs : public MachineFunctionPass {
@@ -41,8 +35,6 @@ class SystemZCopyPhysRegs : public MachineFunctionPass {
     initializeSystemZCopyPhysRegsPass(*PassRegistry::getPassRegistry());
   }
 
-  StringRef getPassName() const override { return SYSTEMZ_COPYPHYSREGS_NAME; }
-
   bool runOnMachineFunction(MachineFunction &MF) override;
   void getAnalysisUsage(AnalysisUsage &AU) const override;
 
@@ -59,7 +51,7 @@ char SystemZCopyPhysRegs::ID = 0;
 } // end anonymous namespace
 
 INITIALIZE_PASS(SystemZCopyPhysRegs, "systemz-copy-physregs",
-                SYSTEMZ_COPYPHYSREGS_NAME, false, false)
+                "SystemZ Copy Physregs", false, false)
 
 FunctionPass *llvm::createSystemZCopyPhysRegsPass(SystemZTargetMachine &TM) {
   return new SystemZCopyPhysRegs();

llvm/lib/Target/SystemZ/SystemZElimCompare.cpp

@@ -65,11 +65,8 @@ class SystemZElimCompare : public MachineFunctionPass {
 public:
   static char ID;
 
-  SystemZElimCompare(const SystemZTargetMachine &tm)
-    : MachineFunctionPass(ID) {}
-
-  StringRef getPassName() const override {
-    return "SystemZ Comparison Elimination";
+  SystemZElimCompare() : MachineFunctionPass(ID) {
+    initializeSystemZElimComparePass(*PassRegistry::getPassRegistry());
   }
 
   bool processBlock(MachineBasicBlock &MBB);
@@ -106,6 +103,9 @@ char SystemZElimCompare::ID = 0;
 
 } // end anonymous namespace
 
+INITIALIZE_PASS(SystemZElimCompare, DEBUG_TYPE,
+                "SystemZ Comparison Elimination", false, false)
+
 // Returns true if MI is an instruction whose output equals the value in Reg.
 static bool preservesValueOf(MachineInstr &MI, unsigned Reg) {
   switch (MI.getOpcode()) {
@@ -746,5 +746,5 @@ bool SystemZElimCompare::runOnMachineFunction(MachineFunction &F) {
 }
 
 FunctionPass *llvm::createSystemZElimComparePass(SystemZTargetMachine &TM) {
-  return new SystemZElimCompare(TM);
+  return new SystemZElimCompare();
 }

llvm/lib/Target/SystemZ/SystemZLDCleanup.cpp

@@ -29,11 +29,8 @@ namespace {
 class SystemZLDCleanup : public MachineFunctionPass {
 public:
   static char ID;
-  SystemZLDCleanup(const SystemZTargetMachine &tm)
-    : MachineFunctionPass(ID), TII(nullptr), MF(nullptr) {}
-
-  StringRef getPassName() const override {
-    return "SystemZ Local Dynamic TLS Access Clean-up";
+  SystemZLDCleanup() : MachineFunctionPass(ID), TII(nullptr), MF(nullptr) {
+    initializeSystemZLDCleanupPass(*PassRegistry::getPassRegistry());
   }
 
   bool runOnMachineFunction(MachineFunction &MF) override;
@@ -52,8 +49,11 @@ char SystemZLDCleanup::ID = 0;
 
 } // end anonymous namespace
 
+INITIALIZE_PASS(SystemZLDCleanup, "systemz-ld-cleanup",
+                "SystemZ Local Dynamic TLS Access Clean-up", false, false)
+
 FunctionPass *llvm::createSystemZLDCleanupPass(SystemZTargetMachine &TM) {
-  return new SystemZLDCleanup(TM);
+  return new SystemZLDCleanup();
 }
 
 void SystemZLDCleanup::getAnalysisUsage(AnalysisUsage &AU) const {

llvm/lib/Target/SystemZ/SystemZLongBranch.cpp

@@ -135,10 +135,9 @@ class SystemZLongBranch : public MachineFunctionPass {
 public:
   static char ID;
 
-  SystemZLongBranch(const SystemZTargetMachine &tm)
-    : MachineFunctionPass(ID) {}
-
-  StringRef getPassName() const override { return "SystemZ Long Branch"; }
+  SystemZLongBranch() : MachineFunctionPass(ID) {
+    initializeSystemZLongBranchPass(*PassRegistry::getPassRegistry());
+  }
 
   bool runOnMachineFunction(MachineFunction &F) override;
 
@@ -174,6 +173,9 @@ const uint64_t MaxForwardRange = 0xfffe;
 
 } // end anonymous namespace
 
+INITIALIZE_PASS(SystemZLongBranch, DEBUG_TYPE, "SystemZ Long Branch", false,
+                false)
+
 // Position describes the state immediately before Block.  Update Block
 // accordingly and move Position to the end of the block's non-terminator
 // instructions.
@@ -481,5 +483,5 @@ bool SystemZLongBranch::runOnMachineFunction(MachineFunction &F) {
 }
 
 FunctionPass *llvm::createSystemZLongBranchPass(SystemZTargetMachine &TM) {
-  return new SystemZLongBranch(TM);
+  return new SystemZLongBranch();
 }

llvm/lib/Target/SystemZ/SystemZPostRewrite.cpp

@@ -21,16 +21,10 @@
 #include "llvm/CodeGen/MachineInstrBuilder.h"
 using namespace llvm;
 
-#define SYSTEMZ_POSTREWRITE_NAME "SystemZ Post Rewrite pass"
-
 #define DEBUG_TYPE "systemz-postrewrite"
 STATISTIC(MemFoldCopies, "Number of copies inserted before folded mem ops.");
 STATISTIC(LOCRMuxJumps, "Number of LOCRMux jump-sequences (lower is better)");
 
-namespace llvm {
-  void initializeSystemZPostRewritePass(PassRegistry&);
-}
-
 namespace {
 
 class SystemZPostRewrite : public MachineFunctionPass {
@@ -44,8 +38,6 @@ class SystemZPostRewrite : public MachineFunctionPass {
 
   bool runOnMachineFunction(MachineFunction &Fn) override;
 
-  StringRef getPassName() const override { return SYSTEMZ_POSTREWRITE_NAME; }
-
 private:
   void selectLOCRMux(MachineBasicBlock &MBB,
                      MachineBasicBlock::iterator MBBI,
@@ -70,7 +62,7 @@ char SystemZPostRewrite::ID = 0;
 } // end anonymous namespace
 
 INITIALIZE_PASS(SystemZPostRewrite, "systemz-post-rewrite",
-                SYSTEMZ_POSTREWRITE_NAME, false, false)
+                "SystemZ Post Rewrite pass", false, false)
 
 /// Returns an instance of the Post Rewrite pass.
 FunctionPass *llvm::createSystemZPostRewritePass(SystemZTargetMachine &TM) {

llvm/lib/Target/SystemZ/SystemZShortenInst.cpp

@@ -26,11 +26,7 @@ namespace {
 class SystemZShortenInst : public MachineFunctionPass {
 public:
   static char ID;
-  SystemZShortenInst(const SystemZTargetMachine &tm);
-
-  StringRef getPassName() const override {
-    return "SystemZ Instruction Shortening";
-  }
+  SystemZShortenInst();
 
   bool processBlock(MachineBasicBlock &MBB);
   bool runOnMachineFunction(MachineFunction &F) override;
@@ -56,12 +52,17 @@ class SystemZShortenInst : public MachineFunctionPass {
 char SystemZShortenInst::ID = 0;
 } // end anonymous namespace
 
+INITIALIZE_PASS(SystemZShortenInst, DEBUG_TYPE,
+                "SystemZ Instruction Shortening", false, false)
+
 FunctionPass *llvm::createSystemZShortenInstPass(SystemZTargetMachine &TM) {
-  return new SystemZShortenInst(TM);
+  return new SystemZShortenInst();
 }
 
-SystemZShortenInst::SystemZShortenInst(const SystemZTargetMachine &tm)
-  : MachineFunctionPass(ID), TII(nullptr) {}
+SystemZShortenInst::SystemZShortenInst()
+    : MachineFunctionPass(ID), TII(nullptr) {
+  initializeSystemZShortenInstPass(*PassRegistry::getPassRegistry());
+}
 
 // Tie operands if MI has become a two-address instruction.
 static void tieOpsIfNeeded(MachineInstr &MI) {

llvm/lib/Target/SystemZ/SystemZTDC.cpp

@@ -61,10 +61,6 @@
 
 using namespace llvm;
 
-namespace llvm {
-  void initializeSystemZTDCPassPass(PassRegistry&);
-}
-
 namespace {
 
 class SystemZTDCPass : public FunctionPass {

llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp

@@ -32,6 +32,14 @@ using namespace llvm;
 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeSystemZTarget() {
   // Register the target.
   RegisterTargetMachine<SystemZTargetMachine> X(getTheSystemZTarget());
+  auto &PR = *PassRegistry::getPassRegistry();
+  initializeSystemZElimComparePass(PR);
+  initializeSystemZShortenInstPass(PR);
+  initializeSystemZLongBranchPass(PR);
+  initializeSystemZLDCleanupPass(PR);
+  initializeSystemZShortenInstPass(PR);
+  initializeSystemZPostRewritePass(PR);
+  initializeSystemZTDCPassPass(PR);
 }
 
 // Determine whether we use the vector ABI.