[RISCV] Cleanup pass initialization.

Remove redundant initializations from pass constructors that were
already being initialized by LLVMInitializeRISCVTarget().

Author: topperc

llvm/lib/Target/RISCV/RISCVExpandPseudoInsts.cpp

@@ -34,9 +34,7 @@ class RISCVExpandPseudo : public MachineFunctionPass {
   const RISCVInstrInfo *TII;
   static char ID;
 
-  RISCVExpandPseudo() : MachineFunctionPass(ID) {
-    initializeRISCVExpandPseudoPass(*PassRegistry::getPassRegistry());
-  }
+  RISCVExpandPseudo() : MachineFunctionPass(ID) {}
 
   bool runOnMachineFunction(MachineFunction &MF) override;
 
@@ -608,9 +606,7 @@ class RISCVPreRAExpandPseudo : public MachineFunctionPass {
   const RISCVInstrInfo *TII;
   static char ID;
 
-  RISCVPreRAExpandPseudo() : MachineFunctionPass(ID) {
-    initializeRISCVPreRAExpandPseudoPass(*PassRegistry::getPassRegistry());
-  }
+  RISCVPreRAExpandPseudo() : MachineFunctionPass(ID) {}
 
   bool runOnMachineFunction(MachineFunction &MF) override;
 

llvm/lib/Target/RISCV/RISCVInsertReadWriteCSR.cpp

@@ -31,9 +31,7 @@ class RISCVInsertReadWriteCSR : public MachineFunctionPass {
 public:
   static char ID;
 
-  RISCVInsertReadWriteCSR() : MachineFunctionPass(ID) {
-    initializeRISCVInsertReadWriteCSRPass(*PassRegistry::getPassRegistry());
-  }
+  RISCVInsertReadWriteCSR() : MachineFunctionPass(ID) {}
 
   bool runOnMachineFunction(MachineFunction &MF) override;
 

llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp

@@ -689,9 +689,7 @@ class RISCVInsertVSETVLI : public MachineFunctionPass {
 public:
   static char ID;
 
-  RISCVInsertVSETVLI() : MachineFunctionPass(ID) {
-    initializeRISCVInsertVSETVLIPass(*PassRegistry::getPassRegistry());
-  }
+  RISCVInsertVSETVLI() : MachineFunctionPass(ID) {}
   bool runOnMachineFunction(MachineFunction &MF) override;
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {

llvm/lib/Target/RISCV/RISCVInsertWriteVXRM.cpp

@@ -171,9 +171,7 @@ class RISCVInsertWriteVXRM : public MachineFunctionPass {
 public:
   static char ID;
 
-  RISCVInsertWriteVXRM() : MachineFunctionPass(ID) {
-    initializeRISCVInsertWriteVXRMPass(*PassRegistry::getPassRegistry());
-  }
+  RISCVInsertWriteVXRM() : MachineFunctionPass(ID) {}
 
   bool runOnMachineFunction(MachineFunction &MF) override;
 

llvm/lib/Target/RISCV/RISCVMakeCompressible.cpp

@@ -84,9 +84,7 @@ struct RISCVMakeCompressibleOpt : public MachineFunctionPass {
 
   bool runOnMachineFunction(MachineFunction &Fn) override;
 
-  RISCVMakeCompressibleOpt() : MachineFunctionPass(ID) {
-    initializeRISCVMakeCompressibleOptPass(*PassRegistry::getPassRegistry());
-  }
+  RISCVMakeCompressibleOpt() : MachineFunctionPass(ID) {}
 
   StringRef getPassName() const override { return RISCV_COMPRESS_INSTRS_NAME; }
 };

llvm/lib/Target/RISCV/RISCVMoveMerger.cpp

@@ -22,9 +22,7 @@ namespace {
 struct RISCVMoveMerge : public MachineFunctionPass {
   static char ID;
 
-  RISCVMoveMerge() : MachineFunctionPass(ID) {
-    initializeRISCVMoveMergePass(*PassRegistry::getPassRegistry());
-  }
+  RISCVMoveMerge() : MachineFunctionPass(ID) {}
 
   const RISCVInstrInfo *TII;
   const TargetRegisterInfo *TRI;

llvm/lib/Target/RISCV/RISCVOptWInstrs.cpp

@@ -48,9 +48,7 @@ class RISCVOptWInstrs : public MachineFunctionPass {
 public:
   static char ID;
 
-  RISCVOptWInstrs() : MachineFunctionPass(ID) {
-    initializeRISCVOptWInstrsPass(*PassRegistry::getPassRegistry());
-  }
+  RISCVOptWInstrs() : MachineFunctionPass(ID) {}
 
   bool runOnMachineFunction(MachineFunction &MF) override;
   bool removeSExtWInstrs(MachineFunction &MF, const RISCVInstrInfo &TII,

llvm/lib/Target/RISCV/RISCVPushPopOptimizer.cpp

@@ -24,9 +24,7 @@ namespace {
 struct RISCVPushPopOpt : public MachineFunctionPass {
   static char ID;
 
-  RISCVPushPopOpt() : MachineFunctionPass(ID) {
-    initializeRISCVPushPopOptPass(*PassRegistry::getPassRegistry());
-  }
+  RISCVPushPopOpt() : MachineFunctionPass(ID) {}
 
   const RISCVInstrInfo *TII;
   const TargetRegisterInfo *TRI;

llvm/lib/Target/RISCV/RISCVRVVInitUndef.cpp

@@ -52,9 +52,7 @@ class RISCVInitUndef : public MachineFunctionPass {
 public:
   static char ID;
 
-  RISCVInitUndef() : MachineFunctionPass(ID) {
-    initializeRISCVInitUndefPass(*PassRegistry::getPassRegistry());
-  }
+  RISCVInitUndef() : MachineFunctionPass(ID) {}
   bool runOnMachineFunction(MachineFunction &MF) override;
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {