485 lines
20 KiB
C++
485 lines
20 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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#include "llvm/IR/Statepoint.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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GlobalVariable *IRBuilderBase::CreateGlobalString(StringRef Str,
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const Twine &Name,
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unsigned AddressSpace) {
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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, Name, nullptr,
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GlobalVariable::NotThreadLocal,
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AddressSpace);
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GV->setUnnamedAddr(GlobalValue::UnnamedAddr::Global);
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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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static InvokeInst *createInvokeHelper(Value *Invokee, BasicBlock *NormalDest,
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BasicBlock *UnwindDest,
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ArrayRef<Value *> Ops,
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IRBuilderBase *Builder,
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const Twine &Name = "") {
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InvokeInst *II =
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InvokeInst::Create(Invokee, NormalDest, UnwindDest, Ops, Name);
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Builder->GetInsertBlock()->getInstList().insert(Builder->GetInsertPoint(),
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II);
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Builder->SetInstDebugLocation(II);
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return II;
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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::CreateInvariantStart(Value *Ptr, ConstantInt *Size) {
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assert(isa<PointerType>(Ptr->getType()) &&
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"invariant.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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"invariant.start requires the size to be an i64");
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Value *Ops[] = {Size, Ptr};
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// Fill in the single overloaded type: memory object type.
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Type *ObjectPtr[1] = {Ptr->getType()};
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Module *M = BB->getParent()->getParent();
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Value *TheFn =
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Intrinsic::getDeclaration(M, Intrinsic::invariant_start, ObjectPtr);
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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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/// \brief Create a call to a Masked Load intrinsic.
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/// \p Ptr - base pointer for the load
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/// \p Align - alignment of the source location
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/// \p Mask - vector of booleans which indicates what vector lanes should
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/// be accessed in memory
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/// \p PassThru - pass-through value that is used to fill the masked-off lanes
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/// of the result
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/// \p Name - name of the result variable
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CallInst *IRBuilderBase::CreateMaskedLoad(Value *Ptr, unsigned Align,
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Value *Mask, Value *PassThru,
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const Twine &Name) {
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PointerType *PtrTy = cast<PointerType>(Ptr->getType());
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Type *DataTy = PtrTy->getElementType();
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assert(DataTy->isVectorTy() && "Ptr should point to a vector");
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if (!PassThru)
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PassThru = UndefValue::get(DataTy);
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Type *OverloadedTypes[] = { DataTy, PtrTy };
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Value *Ops[] = { Ptr, getInt32(Align), Mask, PassThru};
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return CreateMaskedIntrinsic(Intrinsic::masked_load, Ops,
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OverloadedTypes, Name);
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}
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/// \brief Create a call to a Masked Store intrinsic.
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/// \p Val - data to be stored,
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/// \p Ptr - base pointer for the store
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/// \p Align - alignment of the destination location
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/// \p Mask - vector of booleans which indicates what vector lanes should
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/// be accessed in memory
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CallInst *IRBuilderBase::CreateMaskedStore(Value *Val, Value *Ptr,
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unsigned Align, Value *Mask) {
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PointerType *PtrTy = cast<PointerType>(Ptr->getType());
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Type *DataTy = PtrTy->getElementType();
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assert(DataTy->isVectorTy() && "Ptr should point to a vector");
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Type *OverloadedTypes[] = { DataTy, PtrTy };
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Value *Ops[] = { Val, Ptr, getInt32(Align), Mask };
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return CreateMaskedIntrinsic(Intrinsic::masked_store, Ops, OverloadedTypes);
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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 an array of overloaded types -
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/// OverloadedTypes.
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CallInst *IRBuilderBase::CreateMaskedIntrinsic(Intrinsic::ID Id,
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ArrayRef<Value *> Ops,
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ArrayRef<Type *> OverloadedTypes,
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const Twine &Name) {
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Module *M = BB->getParent()->getParent();
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Value *TheFn = Intrinsic::getDeclaration(M, Id, OverloadedTypes);
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return createCallHelper(TheFn, Ops, this, Name);
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}
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/// \brief Create a call to a Masked Gather intrinsic.
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/// \p Ptrs - vector of pointers for loading
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/// \p Align - alignment for one element
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/// \p Mask - vector of booleans which indicates what vector lanes should
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/// be accessed in memory
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/// \p PassThru - pass-through value that is used to fill the masked-off lanes
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/// of the result
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/// \p Name - name of the result variable
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CallInst *IRBuilderBase::CreateMaskedGather(Value *Ptrs, unsigned Align,
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Value *Mask, Value *PassThru,
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const Twine& Name) {
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auto PtrsTy = cast<VectorType>(Ptrs->getType());
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auto PtrTy = cast<PointerType>(PtrsTy->getElementType());
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unsigned NumElts = PtrsTy->getVectorNumElements();
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Type *DataTy = VectorType::get(PtrTy->getElementType(), NumElts);
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if (!Mask)
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Mask = Constant::getAllOnesValue(VectorType::get(Type::getInt1Ty(Context),
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NumElts));
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Value * Ops[] = {Ptrs, getInt32(Align), Mask, UndefValue::get(DataTy)};
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// We specify only one type when we create this intrinsic. Types of other
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// arguments are derived from this type.
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return CreateMaskedIntrinsic(Intrinsic::masked_gather, Ops, { DataTy }, Name);
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}
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/// \brief Create a call to a Masked Scatter intrinsic.
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/// \p Data - data to be stored,
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/// \p Ptrs - the vector of pointers, where the \p Data elements should be
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/// stored
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/// \p Align - alignment for one element
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/// \p Mask - vector of booleans which indicates what vector lanes should
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/// be accessed in memory
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CallInst *IRBuilderBase::CreateMaskedScatter(Value *Data, Value *Ptrs,
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unsigned Align, Value *Mask) {
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auto PtrsTy = cast<VectorType>(Ptrs->getType());
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auto DataTy = cast<VectorType>(Data->getType());
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unsigned NumElts = PtrsTy->getVectorNumElements();
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#ifndef NDEBUG
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auto PtrTy = cast<PointerType>(PtrsTy->getElementType());
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assert(NumElts == DataTy->getVectorNumElements() &&
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PtrTy->getElementType() == DataTy->getElementType() &&
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"Incompatible pointer and data types");
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#endif
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if (!Mask)
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Mask = Constant::getAllOnesValue(VectorType::get(Type::getInt1Ty(Context),
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NumElts));
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Value * Ops[] = {Data, Ptrs, getInt32(Align), Mask};
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// We specify only one type when we create this intrinsic. Types of other
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// arguments are derived from this type.
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return CreateMaskedIntrinsic(Intrinsic::masked_scatter, Ops, { DataTy });
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}
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template <typename T0, typename T1, typename T2, typename T3>
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static std::vector<Value *>
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getStatepointArgs(IRBuilderBase &B, uint64_t ID, uint32_t NumPatchBytes,
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Value *ActualCallee, uint32_t Flags, ArrayRef<T0> CallArgs,
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ArrayRef<T1> TransitionArgs, ArrayRef<T2> DeoptArgs,
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ArrayRef<T3> GCArgs) {
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std::vector<Value *> Args;
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Args.push_back(B.getInt64(ID));
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Args.push_back(B.getInt32(NumPatchBytes));
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Args.push_back(ActualCallee);
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Args.push_back(B.getInt32(CallArgs.size()));
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Args.push_back(B.getInt32(Flags));
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Args.insert(Args.end(), CallArgs.begin(), CallArgs.end());
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Args.push_back(B.getInt32(TransitionArgs.size()));
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Args.insert(Args.end(), TransitionArgs.begin(), TransitionArgs.end());
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Args.push_back(B.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 Args;
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}
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template <typename T0, typename T1, typename T2, typename T3>
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static CallInst *CreateGCStatepointCallCommon(
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IRBuilderBase *Builder, uint64_t ID, uint32_t NumPatchBytes,
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Value *ActualCallee, uint32_t Flags, ArrayRef<T0> CallArgs,
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ArrayRef<T1> TransitionArgs, ArrayRef<T2> DeoptArgs, ArrayRef<T3> 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 = Builder->GetInsertBlock()->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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getStatepointArgs(*Builder, ID, NumPatchBytes, ActualCallee, Flags,
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CallArgs, TransitionArgs, DeoptArgs, GCArgs);
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return createCallHelper(FnStatepoint, Args, Builder, Name);
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}
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CallInst *IRBuilderBase::CreateGCStatepointCall(
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uint64_t ID, uint32_t NumPatchBytes, Value *ActualCallee,
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ArrayRef<Value *> CallArgs, ArrayRef<Value *> DeoptArgs,
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ArrayRef<Value *> GCArgs, const Twine &Name) {
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return CreateGCStatepointCallCommon<Value *, Value *, Value *, Value *>(
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this, ID, NumPatchBytes, ActualCallee, uint32_t(StatepointFlags::None),
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CallArgs, None /* No Transition Args */, DeoptArgs, GCArgs, Name);
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}
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CallInst *IRBuilderBase::CreateGCStatepointCall(
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uint64_t ID, uint32_t NumPatchBytes, Value *ActualCallee, uint32_t Flags,
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ArrayRef<Use> CallArgs, ArrayRef<Use> TransitionArgs,
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ArrayRef<Use> DeoptArgs, ArrayRef<Value *> GCArgs, const Twine &Name) {
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return CreateGCStatepointCallCommon<Use, Use, Use, Value *>(
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this, ID, NumPatchBytes, ActualCallee, Flags, CallArgs, TransitionArgs,
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DeoptArgs, GCArgs, Name);
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}
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CallInst *IRBuilderBase::CreateGCStatepointCall(
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uint64_t ID, uint32_t NumPatchBytes, Value *ActualCallee,
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ArrayRef<Use> CallArgs, ArrayRef<Value *> DeoptArgs,
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ArrayRef<Value *> GCArgs, const Twine &Name) {
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return CreateGCStatepointCallCommon<Use, Value *, Value *, Value *>(
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this, ID, NumPatchBytes, ActualCallee, uint32_t(StatepointFlags::None),
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CallArgs, None, DeoptArgs, GCArgs, Name);
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}
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template <typename T0, typename T1, typename T2, typename T3>
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static InvokeInst *CreateGCStatepointInvokeCommon(
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IRBuilderBase *Builder, uint64_t ID, uint32_t NumPatchBytes,
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Value *ActualInvokee, BasicBlock *NormalDest, BasicBlock *UnwindDest,
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uint32_t Flags, ArrayRef<T0> InvokeArgs, ArrayRef<T1> TransitionArgs,
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ArrayRef<T2> DeoptArgs, ArrayRef<T3> GCArgs, const Twine &Name) {
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// Extract out the type of the callee.
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PointerType *FuncPtrType = cast<PointerType>(ActualInvokee->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 = Builder->GetInsertBlock()->getParent()->getParent();
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// Fill in the one generic type'd argument (the function is also vararg)
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Function *FnStatepoint = Intrinsic::getDeclaration(
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M, Intrinsic::experimental_gc_statepoint, {FuncPtrType});
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std::vector<llvm::Value *> Args =
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getStatepointArgs(*Builder, ID, NumPatchBytes, ActualInvokee, Flags,
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InvokeArgs, TransitionArgs, DeoptArgs, GCArgs);
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return createInvokeHelper(FnStatepoint, NormalDest, UnwindDest, Args, Builder,
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Name);
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}
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InvokeInst *IRBuilderBase::CreateGCStatepointInvoke(
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uint64_t ID, uint32_t NumPatchBytes, Value *ActualInvokee,
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BasicBlock *NormalDest, BasicBlock *UnwindDest,
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ArrayRef<Value *> InvokeArgs, ArrayRef<Value *> DeoptArgs,
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ArrayRef<Value *> GCArgs, const Twine &Name) {
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return CreateGCStatepointInvokeCommon<Value *, Value *, Value *, Value *>(
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this, ID, NumPatchBytes, ActualInvokee, NormalDest, UnwindDest,
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uint32_t(StatepointFlags::None), InvokeArgs, None /* No Transition Args*/,
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DeoptArgs, GCArgs, Name);
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}
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InvokeInst *IRBuilderBase::CreateGCStatepointInvoke(
|
|
uint64_t ID, uint32_t NumPatchBytes, Value *ActualInvokee,
|
|
BasicBlock *NormalDest, BasicBlock *UnwindDest, uint32_t Flags,
|
|
ArrayRef<Use> InvokeArgs, ArrayRef<Use> TransitionArgs,
|
|
ArrayRef<Use> DeoptArgs, ArrayRef<Value *> GCArgs, const Twine &Name) {
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|
return CreateGCStatepointInvokeCommon<Use, Use, Use, Value *>(
|
|
this, ID, NumPatchBytes, ActualInvokee, NormalDest, UnwindDest, Flags,
|
|
InvokeArgs, TransitionArgs, DeoptArgs, GCArgs, Name);
|
|
}
|
|
|
|
InvokeInst *IRBuilderBase::CreateGCStatepointInvoke(
|
|
uint64_t ID, uint32_t NumPatchBytes, Value *ActualInvokee,
|
|
BasicBlock *NormalDest, BasicBlock *UnwindDest, ArrayRef<Use> InvokeArgs,
|
|
ArrayRef<Value *> DeoptArgs, ArrayRef<Value *> GCArgs, const Twine &Name) {
|
|
return CreateGCStatepointInvokeCommon<Use, Value *, Value *, Value *>(
|
|
this, ID, NumPatchBytes, ActualInvokee, NormalDest, UnwindDest,
|
|
uint32_t(StatepointFlags::None), InvokeArgs, None, DeoptArgs, GCArgs,
|
|
Name);
|
|
}
|
|
|
|
CallInst *IRBuilderBase::CreateGCResult(Instruction *Statepoint,
|
|
Type *ResultType,
|
|
const Twine &Name) {
|
|
Intrinsic::ID ID = Intrinsic::experimental_gc_result;
|
|
Module *M = BB->getParent()->getParent();
|
|
Type *Types[] = {ResultType};
|
|
Value *FnGCResult = Intrinsic::getDeclaration(M, ID, Types);
|
|
|
|
Value *Args[] = {Statepoint};
|
|
return createCallHelper(FnGCResult, Args, this, Name);
|
|
}
|
|
|
|
CallInst *IRBuilderBase::CreateGCRelocate(Instruction *Statepoint,
|
|
int BaseOffset,
|
|
int DerivedOffset,
|
|
Type *ResultType,
|
|
const Twine &Name) {
|
|
Module *M = BB->getParent()->getParent();
|
|
Type *Types[] = {ResultType};
|
|
Value *FnGCRelocate =
|
|
Intrinsic::getDeclaration(M, Intrinsic::experimental_gc_relocate, Types);
|
|
|
|
Value *Args[] = {Statepoint,
|
|
getInt32(BaseOffset),
|
|
getInt32(DerivedOffset)};
|
|
return createCallHelper(FnGCRelocate, Args, this, Name);
|
|
}
|