Mark all passes as required in LLVM new pass manager (#2281)

When these passes are used in LLVM new pass manager, they can't be
skipped since they are not optimization passes which are optional.

Before this PR I'm seeing crash in compiler when bisecting pass manager.

Original commit:
KhronosGroup/SPIRV-LLVM-Translator@a682bb3

Author: wenju-he

llvm-spirv/lib/SPIRV/OCLToSPIRV.h

@@ -304,6 +304,8 @@ class OCLToSPIRVPass : public OCLToSPIRVBase,
 public:
   llvm::PreservedAnalyses run(llvm::Module &M,
                               llvm::ModuleAnalysisManager &MAM);
+
+  static bool isRequired() { return true; }
 };
 
 } // namespace SPIRV

llvm-spirv/lib/SPIRV/PreprocessMetadata.h

@@ -83,6 +83,8 @@ class PreprocessMetadataPass
 public:
   llvm::PreservedAnalyses run(llvm::Module &M,
                               llvm::ModuleAnalysisManager &MAM);
+
+  static bool isRequired() { return true; }
 };
 
 } // namespace SPIRV

llvm-spirv/lib/SPIRV/SPIRVLowerBitCastToNonStandardType.h

@@ -51,6 +51,8 @@ class SPIRVLowerBitCastToNonStandardTypePass
   llvm::PreservedAnalyses run(llvm::Function &F,
                               llvm::FunctionAnalysisManager &FAM);
 
+  static bool isRequired() { return true; }
+
 private:
   SPIRV::TranslatorOpts Opts;
 };

llvm-spirv/lib/SPIRV/SPIRVLowerBool.h

@@ -70,6 +70,8 @@ class SPIRVLowerBoolPass : public llvm::PassInfoMixin<SPIRVLowerBoolPass>,
 public:
   llvm::PreservedAnalyses run(llvm::Module &M,
                               llvm::ModuleAnalysisManager &MAM);
+
+  static bool isRequired() { return true; }
 };
 
 class SPIRVLowerBoolLegacy : public llvm::ModulePass,

llvm-spirv/lib/SPIRV/SPIRVLowerConstExpr.h

@@ -40,6 +40,8 @@ class SPIRVLowerConstExprPass
     return runLowerConstExpr(M) ? llvm::PreservedAnalyses::none()
                                 : llvm::PreservedAnalyses::all();
   }
+
+  static bool isRequired() { return true; }
 };
 
 } // namespace SPIRV

llvm-spirv/lib/SPIRV/SPIRVLowerMemmove.h

@@ -63,6 +63,8 @@ class SPIRVLowerMemmovePass : public llvm::PassInfoMixin<SPIRVLowerMemmovePass>,
 public:
   llvm::PreservedAnalyses run(llvm::Module &M,
                               llvm::ModuleAnalysisManager &MAM);
+
+  static bool isRequired() { return true; }
 };
 
 class SPIRVLowerMemmoveLegacy : public llvm::ModulePass,

llvm-spirv/lib/SPIRV/SPIRVLowerOCLBlocks.h

@@ -53,6 +53,8 @@ class SPIRVLowerOCLBlocksPass
 public:
   llvm::PreservedAnalyses run(llvm::Module &M,
                               llvm::ModuleAnalysisManager &MAM);
+
+  static bool isRequired() { return true; }
 };
 
 class SPIRVLowerOCLBlocksLegacy : public llvm::ModulePass,

llvm-spirv/lib/SPIRV/SPIRVLowerSaddWithOverflow.h

@@ -62,6 +62,8 @@ class SPIRVLowerSaddWithOverflowPass
 public:
   llvm::PreservedAnalyses run(llvm::Module &M,
                               llvm::ModuleAnalysisManager &MAM);
+
+  static bool isRequired() { return true; }
 };
 
 class SPIRVLowerSaddWithOverflowLegacy : public llvm::ModulePass,

llvm-spirv/lib/SPIRV/SPIRVRegularizeLLVM.h

@@ -116,6 +116,8 @@ class SPIRVRegularizeLLVMPass
     return runRegularizeLLVM(M) ? llvm::PreservedAnalyses::none()
                                 : llvm::PreservedAnalyses::all();
   }
+
+  static bool isRequired() { return true; }
 };
 
 class SPIRVRegularizeLLVMLegacy : public llvm::ModulePass,

llvm-spirv/lib/SPIRV/SPIRVToOCL.h

@@ -380,6 +380,8 @@ class SPIRVToOCL12Pass : public llvm::PassInfoMixin<SPIRVToOCL12Pass>,
     return runSPIRVToOCL(M) ? llvm::PreservedAnalyses::none()
                             : llvm::PreservedAnalyses::all();
   }
+
+  static bool isRequired() { return true; }
 };
 
 class SPIRVToOCL12Legacy : public SPIRVToOCL12Base, public SPIRVToOCLLegacy {
@@ -451,6 +453,8 @@ class SPIRVToOCL20Pass : public llvm::PassInfoMixin<SPIRVToOCL20Pass>,
     return runSPIRVToOCL(M) ? llvm::PreservedAnalyses::none()
                             : llvm::PreservedAnalyses::all();
   }
+
+  static bool isRequired() { return true; }
 };
 
 class SPIRVToOCL20Legacy : public SPIRVToOCLLegacy, public SPIRVToOCL20Base {

llvm-spirv/lib/SPIRV/SPIRVWriter.h

@@ -274,6 +274,8 @@ class LLVMToSPIRVPass : public PassInfoMixin<LLVMToSPIRVPass> {
                                           : llvm::PreservedAnalyses::all();
   }
 
+  static bool isRequired() { return true; }
+
 private:
   SPIRVModule *SMod;
 };