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6cc93bc8ba
Previously, the transitory state only needed and valid during generation of the LLVM IR for the function body was conflated with the general codegen metadata for the function declaration in IrFunction. There is further potential for cleanup regarding the use of gIR->func() and so on all over the code base, but this is out of scope of this commit, which is only concerned with those IrFunction members moved to FuncGenState. GitHub: Fixes #1661.
79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
//===-- ir/irfunction.h - Codegen state for D functions ---------*- C++ -*-===//
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//
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// LDC – the LLVM D compiler
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//
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// This file is distributed under the BSD-style LDC license. See the LICENSE
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// file for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Represents the state of a D function/method/... on its way through the
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// codegen process.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LDC_IR_IRFUNCTION_H
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#define LDC_IR_IRFUNCTION_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/DenseMapInfo.h"
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#include "gen/llvm.h"
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#include "ir/irfuncty.h"
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#include <stack>
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class FuncDeclaration;
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class TypeFunction;
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class VarDeclaration;
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// represents a function
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struct IrFunction {
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// constructor
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explicit IrFunction(FuncDeclaration *fd);
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// annotations
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void setNeverInline();
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void setAlwaysInline();
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llvm::Function *func = nullptr;
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FuncDeclaration *decl = nullptr;
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TypeFunction *type = nullptr;
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llvm::Value *sretArg = nullptr; // sret pointer arg
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llvm::Value *thisArg = nullptr; // class/struct 'this' arg
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llvm::Value *nestArg = nullptr; // nested function 'this' arg
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llvm::StructType *frameType = nullptr; // type of nested context
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unsigned frameTypeAlignment = 0; // its alignment
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// number of enclosing functions with variables accessed by nested functions
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// (-1 if neither this function nor any enclosing ones access variables from
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// enclosing functions)
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int depth = -1;
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bool nestedContextCreated = false; // holds whether nested context is created
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// TODO: Move to FuncGenState?
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llvm::Value *_arguments = nullptr;
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llvm::Value *_argptr = nullptr;
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#if LDC_LLVM_VER >= 307
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llvm::DISubprogram *diSubprogram = nullptr;
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std::stack<llvm::DILexicalBlock *> diLexicalBlocks;
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using VariableMap = llvm::DenseMap<VarDeclaration *, llvm::DILocalVariable *>;
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#else
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llvm::DISubprogram diSubprogram;
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std::stack<llvm::DILexicalBlock> diLexicalBlocks;
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using VariableMap = llvm::DenseMap<VarDeclaration *, llvm::DIVariable>;
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#endif
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// Debug info for all variables
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VariableMap variableMap;
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IrFuncTy irFty;
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/// Stores the FastMath options for this functions.
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/// These are set e.g. by math related UDA's from ldc.attributes.
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llvm::FastMathFlags FMF;
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};
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IrFunction *getIrFunc(FuncDeclaration *decl, bool create = false);
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bool isIrFuncCreated(FuncDeclaration *decl);
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#endif
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