mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-25 00:29:20 +00:00
e46577f2b2
Nothing particularly interesting, just adding infrastructure for use by in tree users and out of tree users. Note: These were extracted out of a working frontend, but they have not been well tested in isolation. Differential Revision: http://reviews.llvm.org/D6807 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224981 91177308-0d34-0410-b5e6-96231b3b80d8
280 lines
10 KiB
C++
280 lines
10 KiB
C++
//===---- IRBuilder.cpp - Builder for LLVM Instrs -------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the IRBuilder class, which is used as a convenient way
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// to create LLVM instructions with a consistent and simplified interface.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/Function.h"
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#include "llvm/IR/GlobalVariable.h"
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#include "llvm/IR/IRBuilder.h"
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#include "llvm/IR/Intrinsics.h"
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#include "llvm/IR/LLVMContext.h"
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using namespace llvm;
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/// CreateGlobalString - Make a new global variable with an initializer that
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/// has array of i8 type filled in with the nul terminated string value
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/// specified. If Name is specified, it is the name of the global variable
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/// created.
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Value *IRBuilderBase::CreateGlobalString(StringRef Str, const Twine &Name) {
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Constant *StrConstant = ConstantDataArray::getString(Context, Str);
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Module &M = *BB->getParent()->getParent();
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GlobalVariable *GV = new GlobalVariable(M, StrConstant->getType(),
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true, GlobalValue::PrivateLinkage,
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StrConstant);
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GV->setName(Name);
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GV->setUnnamedAddr(true);
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return GV;
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}
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Type *IRBuilderBase::getCurrentFunctionReturnType() const {
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assert(BB && BB->getParent() && "No current function!");
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return BB->getParent()->getReturnType();
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}
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Value *IRBuilderBase::getCastedInt8PtrValue(Value *Ptr) {
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PointerType *PT = cast<PointerType>(Ptr->getType());
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if (PT->getElementType()->isIntegerTy(8))
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return Ptr;
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// Otherwise, we need to insert a bitcast.
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PT = getInt8PtrTy(PT->getAddressSpace());
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BitCastInst *BCI = new BitCastInst(Ptr, PT, "");
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BB->getInstList().insert(InsertPt, BCI);
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SetInstDebugLocation(BCI);
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return BCI;
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}
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static CallInst *createCallHelper(Value *Callee, ArrayRef<Value *> Ops,
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IRBuilderBase *Builder,
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const Twine& Name="") {
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CallInst *CI = CallInst::Create(Callee, Ops, Name);
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Builder->GetInsertBlock()->getInstList().insert(Builder->GetInsertPoint(),CI);
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Builder->SetInstDebugLocation(CI);
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return CI;
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}
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CallInst *IRBuilderBase::
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CreateMemSet(Value *Ptr, Value *Val, Value *Size, unsigned Align,
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bool isVolatile, MDNode *TBAATag, MDNode *ScopeTag,
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MDNode *NoAliasTag) {
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Ptr = getCastedInt8PtrValue(Ptr);
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Value *Ops[] = { Ptr, Val, Size, getInt32(Align), getInt1(isVolatile) };
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Type *Tys[] = { Ptr->getType(), Size->getType() };
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Module *M = BB->getParent()->getParent();
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Value *TheFn = Intrinsic::getDeclaration(M, Intrinsic::memset, Tys);
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CallInst *CI = createCallHelper(TheFn, Ops, this);
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// Set the TBAA info if present.
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if (TBAATag)
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CI->setMetadata(LLVMContext::MD_tbaa, TBAATag);
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if (ScopeTag)
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CI->setMetadata(LLVMContext::MD_alias_scope, ScopeTag);
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if (NoAliasTag)
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CI->setMetadata(LLVMContext::MD_noalias, NoAliasTag);
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return CI;
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}
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CallInst *IRBuilderBase::
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CreateMemCpy(Value *Dst, Value *Src, Value *Size, unsigned Align,
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bool isVolatile, MDNode *TBAATag, MDNode *TBAAStructTag,
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MDNode *ScopeTag, MDNode *NoAliasTag) {
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Dst = getCastedInt8PtrValue(Dst);
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Src = getCastedInt8PtrValue(Src);
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Value *Ops[] = { Dst, Src, Size, getInt32(Align), getInt1(isVolatile) };
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Type *Tys[] = { Dst->getType(), Src->getType(), Size->getType() };
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Module *M = BB->getParent()->getParent();
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Value *TheFn = Intrinsic::getDeclaration(M, Intrinsic::memcpy, Tys);
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CallInst *CI = createCallHelper(TheFn, Ops, this);
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// Set the TBAA info if present.
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if (TBAATag)
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CI->setMetadata(LLVMContext::MD_tbaa, TBAATag);
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// Set the TBAA Struct info if present.
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if (TBAAStructTag)
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CI->setMetadata(LLVMContext::MD_tbaa_struct, TBAAStructTag);
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if (ScopeTag)
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CI->setMetadata(LLVMContext::MD_alias_scope, ScopeTag);
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if (NoAliasTag)
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CI->setMetadata(LLVMContext::MD_noalias, NoAliasTag);
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return CI;
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}
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CallInst *IRBuilderBase::
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CreateMemMove(Value *Dst, Value *Src, Value *Size, unsigned Align,
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bool isVolatile, MDNode *TBAATag, MDNode *ScopeTag,
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MDNode *NoAliasTag) {
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Dst = getCastedInt8PtrValue(Dst);
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Src = getCastedInt8PtrValue(Src);
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Value *Ops[] = { Dst, Src, Size, getInt32(Align), getInt1(isVolatile) };
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Type *Tys[] = { Dst->getType(), Src->getType(), Size->getType() };
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Module *M = BB->getParent()->getParent();
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Value *TheFn = Intrinsic::getDeclaration(M, Intrinsic::memmove, Tys);
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CallInst *CI = createCallHelper(TheFn, Ops, this);
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// Set the TBAA info if present.
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if (TBAATag)
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CI->setMetadata(LLVMContext::MD_tbaa, TBAATag);
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if (ScopeTag)
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CI->setMetadata(LLVMContext::MD_alias_scope, ScopeTag);
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if (NoAliasTag)
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CI->setMetadata(LLVMContext::MD_noalias, NoAliasTag);
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return CI;
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}
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CallInst *IRBuilderBase::CreateLifetimeStart(Value *Ptr, ConstantInt *Size) {
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assert(isa<PointerType>(Ptr->getType()) &&
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"lifetime.start only applies to pointers.");
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Ptr = getCastedInt8PtrValue(Ptr);
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if (!Size)
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Size = getInt64(-1);
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else
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assert(Size->getType() == getInt64Ty() &&
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"lifetime.start requires the size to be an i64");
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Value *Ops[] = { Size, Ptr };
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Module *M = BB->getParent()->getParent();
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Value *TheFn = Intrinsic::getDeclaration(M, Intrinsic::lifetime_start);
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return createCallHelper(TheFn, Ops, this);
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}
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CallInst *IRBuilderBase::CreateLifetimeEnd(Value *Ptr, ConstantInt *Size) {
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assert(isa<PointerType>(Ptr->getType()) &&
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"lifetime.end only applies to pointers.");
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Ptr = getCastedInt8PtrValue(Ptr);
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if (!Size)
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Size = getInt64(-1);
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else
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assert(Size->getType() == getInt64Ty() &&
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"lifetime.end requires the size to be an i64");
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Value *Ops[] = { Size, Ptr };
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Module *M = BB->getParent()->getParent();
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Value *TheFn = Intrinsic::getDeclaration(M, Intrinsic::lifetime_end);
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return createCallHelper(TheFn, Ops, this);
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}
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CallInst *IRBuilderBase::CreateAssumption(Value *Cond) {
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assert(Cond->getType() == getInt1Ty() &&
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"an assumption condition must be of type i1");
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Value *Ops[] = { Cond };
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Module *M = BB->getParent()->getParent();
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Value *FnAssume = Intrinsic::getDeclaration(M, Intrinsic::assume);
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return createCallHelper(FnAssume, Ops, this);
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}
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/// Create a call to a Masked Load intrinsic.
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/// Ops - an array of operands.
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CallInst *IRBuilderBase::CreateMaskedLoad(ArrayRef<Value *> Ops) {
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// The only one overloaded type - the type of passthru value in this case
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Type *DataTy = Ops[3]->getType();
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return CreateMaskedIntrinsic(Intrinsic::masked_load, Ops, DataTy);
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}
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/// Create a call to a Masked Store intrinsic.
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/// Ops - an array of operands.
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CallInst *IRBuilderBase::CreateMaskedStore(ArrayRef<Value *> Ops) {
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// DataTy - type of the data to be stored - the only one overloaded type
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Type *DataTy = Ops[0]->getType();
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return CreateMaskedIntrinsic(Intrinsic::masked_store, Ops, DataTy);
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}
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/// Create a call to a Masked intrinsic, with given intrinsic Id,
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/// an array of operands - Ops, and one overloaded type - DataTy
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CallInst *IRBuilderBase::CreateMaskedIntrinsic(unsigned Id,
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ArrayRef<Value *> Ops,
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Type *DataTy) {
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Module *M = BB->getParent()->getParent();
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Type *OverloadedTypes[] = { DataTy };
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Value *TheFn = Intrinsic::getDeclaration(M, (Intrinsic::ID)Id, OverloadedTypes);
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return createCallHelper(TheFn, Ops, this);
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}
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CallInst *IRBuilderBase::CreateGCStatepoint(Value *ActualCallee,
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ArrayRef<Value*> CallArgs,
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ArrayRef<Value*> DeoptArgs,
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ArrayRef<Value*> GCArgs,
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const Twine& Name) {
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// Extract out the type of the callee.
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PointerType *FuncPtrType = cast<PointerType>(ActualCallee->getType());
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assert(isa<FunctionType>(FuncPtrType->getElementType()) &&
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"actual callee must be a callable value");
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Module *M = BB->getParent()->getParent();
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// Fill in the one generic type'd argument (the function is also vararg)
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Type *ArgTypes[] = { FuncPtrType };
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Function *FnStatepoint =
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Intrinsic::getDeclaration(M, Intrinsic::experimental_gc_statepoint,
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ArgTypes);
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std::vector<llvm::Value *> args;
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args.push_back(ActualCallee);
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args.push_back(getInt32(CallArgs.size()));
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args.push_back(getInt32(0 /*unused*/));
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args.insert(args.end(), CallArgs.begin(), CallArgs.end());
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args.push_back(getInt32(DeoptArgs.size()));
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args.insert(args.end(), DeoptArgs.begin(), DeoptArgs.end());
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args.insert(args.end(), GCArgs.begin(), GCArgs.end());
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return createCallHelper(FnStatepoint, args, this, Name);
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}
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CallInst *IRBuilderBase::CreateGCResult(Instruction *Statepoint,
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Type *ResultType,
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const Twine &Name) {
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Intrinsic::ID ID;
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if (ResultType->isIntegerTy()) {
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ID = Intrinsic::experimental_gc_result_int;
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} else if (ResultType->isFloatingPointTy()) {
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ID = Intrinsic::experimental_gc_result_float;
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} else if (ResultType->isPointerTy()) {
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ID = Intrinsic::experimental_gc_result_ptr;
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} else {
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llvm_unreachable("unimplemented result type for gc.result");
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}
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Module *M = BB->getParent()->getParent();
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Type *Types[] = {ResultType};
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Value *FnGCResult = Intrinsic::getDeclaration(M, ID, Types);
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Value *Args[] = {Statepoint};
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return createCallHelper(FnGCResult, Args, this, Name);
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}
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CallInst *IRBuilderBase::CreateGCRelocate(Instruction *Statepoint,
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int BaseOffset,
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int DerivedOffset,
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Type *ResultType,
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const Twine &Name) {
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Module *M = BB->getParent()->getParent();
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Type *Types[] = {ResultType};
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Value *FnGCRelocate =
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Intrinsic::getDeclaration(M, Intrinsic::experimental_gc_relocate, Types);
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Value *Args[] = {Statepoint,
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getInt32(BaseOffset),
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getInt32(DerivedOffset)};
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return createCallHelper(FnGCRelocate, Args, this, Name);
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}
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