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view gen/irstate.cpp @ 1317:4099548c80e0
Allocate objects on the stack if they (a) don't have a destructor, and
(b) don't override the delete operator (on top of the regular conditions for
stack allocation that also apply to arrays, structs, etc.).
The "no destructor" clause is not strictly necessary, but calling them at the
right time would be tricky to say the least; it would involve, among other
things, "manually" inserting a try-finally block around anything that might
throw exceptions not caught in the current function.
Note: objects with custom new operators are automatically ignored because they
don't use the regular allocation runtime call, so there's no need to pay special
attention to them.
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Sat, 09 May 2009 00:50:15 +0200 |
parents | f99a3b393c03 |
children | ad7f2f1862d6 |
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/* DMDFE backend stubs * This file contains the implementations of the backend routines. * For dmdfe these do nothing but print a message saying the module * has been parsed. Substitute your own behaviors for these routimes. */ #include <cstdarg> #include "gen/llvm.h" #include "mtype.h" #include "declaration.h" #include "statement.h" #include "gen/irstate.h" #include "tollvm.h" IRState* gIR = 0; llvm::TargetMachine* gTargetMachine = 0; const llvm::TargetData* gTargetData = 0; TargetABI* gABI = 0; ////////////////////////////////////////////////////////////////////////////////////////// IRScope::IRScope() { begin = end = NULL; } IRScope::IRScope(llvm::BasicBlock* b, llvm::BasicBlock* e) { begin = b; end = e; builder.SetInsertPoint(b); } ////////////////////////////////////////////////////////////////////////////////////////// IRTargetScope::IRTargetScope() { } IRTargetScope::IRTargetScope(Statement* s, EnclosingHandler* enclosinghandler, llvm::BasicBlock* continueTarget, llvm::BasicBlock* breakTarget) { this->s = s; this->enclosinghandler = enclosinghandler; this->breakTarget = breakTarget; this->continueTarget = continueTarget; } ////////////////////////////////////////////////////////////////////////////////////////// IRState::IRState(llvm::Module* m) : module(m), difactory(*m) { interfaceInfoType = NULL; mutexType = NULL; moduleRefType = NULL; dmodule = 0; emitMain = false; mainFunc = 0; ir.state = this; asmBlock = NULL; dwarfCUs = NULL; dwarfSPs = NULL; dwarfGVs = NULL; } IrFunction* IRState::func() { assert(!functions.empty() && "Function stack is empty!"); return functions.back(); } llvm::Function* IRState::topfunc() { assert(!functions.empty() && "Function stack is empty!"); return functions.back()->func; } TypeFunction* IRState::topfunctype() { assert(!functions.empty() && "Function stack is empty!"); return functions.back()->type; } llvm::Instruction* IRState::topallocapoint() { assert(!functions.empty() && "AllocaPoint stack is empty!"); return functions.back()->allocapoint; } IrStruct* IRState::topstruct() { assert(!structs.empty() && "Struct vector is empty!"); return structs.back(); } IRScope& IRState::scope() { assert(!scopes.empty()); return scopes.back(); } llvm::BasicBlock* IRState::scopebb() { IRScope& s = scope(); assert(s.begin); return s.begin; } llvm::BasicBlock* IRState::scopeend() { IRScope& s = scope(); assert(s.end); return s.end; } bool IRState::scopereturned() { //return scope().returned; return !scopebb()->empty() && scopebb()->back().isTerminator(); } LLCallSite IRState::CreateCallOrInvoke(LLValue* Callee, const char* Name) { LLSmallVector<LLValue*, 1> args; return CreateCallOrInvoke(Callee, args.begin(), args.end(), Name); } LLCallSite IRState::CreateCallOrInvoke(LLValue* Callee, LLValue* Arg1, const char* Name) { LLSmallVector<LLValue*, 1> args; args.push_back(Arg1); return CreateCallOrInvoke(Callee, args.begin(), args.end(), Name); } LLCallSite IRState::CreateCallOrInvoke2(LLValue* Callee, LLValue* Arg1, LLValue* Arg2, const char* Name) { LLSmallVector<LLValue*, 2> args; args.push_back(Arg1); args.push_back(Arg2); return CreateCallOrInvoke(Callee, args.begin(), args.end(), Name); } LLCallSite IRState::CreateCallOrInvoke3(LLValue* Callee, LLValue* Arg1, LLValue* Arg2, LLValue* Arg3, const char* Name) { LLSmallVector<LLValue*, 3> args; args.push_back(Arg1); args.push_back(Arg2); args.push_back(Arg3); return CreateCallOrInvoke(Callee, args.begin(), args.end(), Name); } LLCallSite IRState::CreateCallOrInvoke4(LLValue* Callee, LLValue* Arg1, LLValue* Arg2, LLValue* Arg3, LLValue* Arg4, const char* Name) { LLSmallVector<LLValue*, 4> args; args.push_back(Arg1); args.push_back(Arg2); args.push_back(Arg3); args.push_back(Arg4); return CreateCallOrInvoke(Callee, args.begin(), args.end(), Name); } ////////////////////////////////////////////////////////////////////////////////////////// IRBuilder<>* IRBuilderHelper::operator->() { IRBuilder<>& b = state->scope().builder; assert(b.GetInsertBlock() != NULL); return &b; }