Add SwiftShader source to repo
Oct 6 code drop from Transgaming
Review URL: https://chromereviews.googleplex.com/3846015
diff --git a/src/LLVM/lib/Bitcode/Writer/ValueEnumerator.h b/src/LLVM/lib/Bitcode/Writer/ValueEnumerator.h
new file mode 100644
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--- /dev/null
+++ b/src/LLVM/lib/Bitcode/Writer/ValueEnumerator.h
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+//===-- Bitcode/Writer/ValueEnumerator.h - Number values --------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This class gives values and types Unique ID's.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef VALUE_ENUMERATOR_H
+#define VALUE_ENUMERATOR_H
+
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/Attributes.h"
+#include <vector>
+
+namespace llvm {
+
+class Type;
+class Value;
+class Instruction;
+class BasicBlock;
+class Function;
+class Module;
+class MDNode;
+class NamedMDNode;
+class AttrListPtr;
+class TypeSymbolTable;
+class ValueSymbolTable;
+class MDSymbolTable;
+
+class ValueEnumerator {
+public:
+ // For each type, we remember its Type* and occurrence frequency.
+ typedef std::vector<std::pair<const Type*, unsigned> > TypeList;
+
+ // For each value, we remember its Value* and occurrence frequency.
+ typedef std::vector<std::pair<const Value*, unsigned> > ValueList;
+private:
+ typedef DenseMap<const Type*, unsigned> TypeMapType;
+ TypeMapType TypeMap;
+ TypeList Types;
+
+ typedef DenseMap<const Value*, unsigned> ValueMapType;
+ ValueMapType ValueMap;
+ ValueList Values;
+ ValueList MDValues;
+ SmallVector<const MDNode *, 8> FunctionLocalMDs;
+ ValueMapType MDValueMap;
+
+ typedef DenseMap<void*, unsigned> AttributeMapType;
+ AttributeMapType AttributeMap;
+ std::vector<AttrListPtr> Attributes;
+
+ /// GlobalBasicBlockIDs - This map memoizes the basic block ID's referenced by
+ /// the "getGlobalBasicBlockID" method.
+ mutable DenseMap<const BasicBlock*, unsigned> GlobalBasicBlockIDs;
+
+ typedef DenseMap<const Instruction*, unsigned> InstructionMapType;
+ InstructionMapType InstructionMap;
+ unsigned InstructionCount;
+
+ /// BasicBlocks - This contains all the basic blocks for the currently
+ /// incorporated function. Their reverse mapping is stored in ValueMap.
+ std::vector<const BasicBlock*> BasicBlocks;
+
+ /// When a function is incorporated, this is the size of the Values list
+ /// before incorporation.
+ unsigned NumModuleValues;
+ unsigned FirstFuncConstantID;
+ unsigned FirstInstID;
+
+ ValueEnumerator(const ValueEnumerator &); // DO NOT IMPLEMENT
+ void operator=(const ValueEnumerator &); // DO NOT IMPLEMENT
+public:
+ ValueEnumerator(const Module *M);
+
+ unsigned getValueID(const Value *V) const;
+
+ unsigned getTypeID(const Type *T) const {
+ TypeMapType::const_iterator I = TypeMap.find(T);
+ assert(I != TypeMap.end() && "Type not in ValueEnumerator!");
+ return I->second-1;
+ }
+
+ unsigned getInstructionID(const Instruction *I) const;
+ void setInstructionID(const Instruction *I);
+
+ unsigned getAttributeID(const AttrListPtr &PAL) const {
+ if (PAL.isEmpty()) return 0; // Null maps to zero.
+ AttributeMapType::const_iterator I = AttributeMap.find(PAL.getRawPointer());
+ assert(I != AttributeMap.end() && "Attribute not in ValueEnumerator!");
+ return I->second;
+ }
+
+ /// getFunctionConstantRange - Return the range of values that corresponds to
+ /// function-local constants.
+ void getFunctionConstantRange(unsigned &Start, unsigned &End) const {
+ Start = FirstFuncConstantID;
+ End = FirstInstID;
+ }
+
+ const ValueList &getValues() const { return Values; }
+ const ValueList &getMDValues() const { return MDValues; }
+ const SmallVector<const MDNode *, 8> &getFunctionLocalMDValues() const {
+ return FunctionLocalMDs;
+ }
+ const TypeList &getTypes() const { return Types; }
+ const std::vector<const BasicBlock*> &getBasicBlocks() const {
+ return BasicBlocks;
+ }
+ const std::vector<AttrListPtr> &getAttributes() const {
+ return Attributes;
+ }
+
+ /// getGlobalBasicBlockID - This returns the function-specific ID for the
+ /// specified basic block. This is relatively expensive information, so it
+ /// should only be used by rare constructs such as address-of-label.
+ unsigned getGlobalBasicBlockID(const BasicBlock *BB) const;
+
+ /// incorporateFunction/purgeFunction - If you'd like to deal with a function,
+ /// use these two methods to get its data into the ValueEnumerator!
+ ///
+ void incorporateFunction(const Function &F);
+ void purgeFunction();
+
+private:
+ void OptimizeConstants(unsigned CstStart, unsigned CstEnd);
+
+ void EnumerateMetadata(const Value *MD);
+ void EnumerateNamedMDNode(const NamedMDNode *NMD);
+ void EnumerateValue(const Value *V);
+ void EnumerateType(const Type *T);
+ void EnumerateOperandType(const Value *V);
+ void EnumerateAttributes(const AttrListPtr &PAL);
+
+ void EnumerateTypeSymbolTable(const TypeSymbolTable &ST);
+ void EnumerateValueSymbolTable(const ValueSymbolTable &ST);
+ void EnumerateNamedMetadata(const Module *M);
+};
+
+} // End llvm namespace
+
+#endif
