mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 03:33:20 +01:00
269 lines
9.9 KiB
C++
269 lines
9.9 KiB
C++
//===---- llvm/MDBuilder.cpp - Builder for LLVM metadata ------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the MDBuilder class, which is used as a convenient way to
|
|
// create LLVM metadata with a consistent and simplified interface.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/IR/MDBuilder.h"
|
|
#include "llvm/IR/Constants.h"
|
|
#include "llvm/IR/Function.h"
|
|
#include "llvm/IR/Metadata.h"
|
|
using namespace llvm;
|
|
|
|
MDString *MDBuilder::createString(StringRef Str) {
|
|
return MDString::get(Context, Str);
|
|
}
|
|
|
|
ConstantAsMetadata *MDBuilder::createConstant(Constant *C) {
|
|
return ConstantAsMetadata::get(C);
|
|
}
|
|
|
|
MDNode *MDBuilder::createFPMath(float Accuracy) {
|
|
if (Accuracy == 0.0)
|
|
return nullptr;
|
|
assert(Accuracy > 0.0 && "Invalid fpmath accuracy!");
|
|
auto *Op =
|
|
createConstant(ConstantFP::get(Type::getFloatTy(Context), Accuracy));
|
|
return MDNode::get(Context, Op);
|
|
}
|
|
|
|
MDNode *MDBuilder::createBranchWeights(uint32_t TrueWeight,
|
|
uint32_t FalseWeight) {
|
|
return createBranchWeights({TrueWeight, FalseWeight});
|
|
}
|
|
|
|
MDNode *MDBuilder::createBranchWeights(ArrayRef<uint32_t> Weights) {
|
|
assert(Weights.size() >= 1 && "Need at least one branch weights!");
|
|
|
|
SmallVector<Metadata *, 4> Vals(Weights.size() + 1);
|
|
Vals[0] = createString("branch_weights");
|
|
|
|
Type *Int32Ty = Type::getInt32Ty(Context);
|
|
for (unsigned i = 0, e = Weights.size(); i != e; ++i)
|
|
Vals[i + 1] = createConstant(ConstantInt::get(Int32Ty, Weights[i]));
|
|
|
|
return MDNode::get(Context, Vals);
|
|
}
|
|
|
|
MDNode *MDBuilder::createUnpredictable() {
|
|
return MDNode::get(Context, None);
|
|
}
|
|
|
|
MDNode *MDBuilder::createFunctionEntryCount(
|
|
uint64_t Count, bool Synthetic,
|
|
const DenseSet<GlobalValue::GUID> *Imports) {
|
|
Type *Int64Ty = Type::getInt64Ty(Context);
|
|
SmallVector<Metadata *, 8> Ops;
|
|
if (Synthetic)
|
|
Ops.push_back(createString("synthetic_function_entry_count"));
|
|
else
|
|
Ops.push_back(createString("function_entry_count"));
|
|
Ops.push_back(createConstant(ConstantInt::get(Int64Ty, Count)));
|
|
if (Imports) {
|
|
SmallVector<GlobalValue::GUID, 2> OrderID(Imports->begin(), Imports->end());
|
|
std::stable_sort(OrderID.begin(), OrderID.end(),
|
|
[] (GlobalValue::GUID A, GlobalValue::GUID B) {
|
|
return A < B;});
|
|
for (auto ID : OrderID)
|
|
Ops.push_back(createConstant(ConstantInt::get(Int64Ty, ID)));
|
|
}
|
|
return MDNode::get(Context, Ops);
|
|
}
|
|
|
|
MDNode *MDBuilder::createFunctionSectionPrefix(StringRef Prefix) {
|
|
return MDNode::get(Context,
|
|
{createString("function_section_prefix"),
|
|
createString(Prefix)});
|
|
}
|
|
|
|
MDNode *MDBuilder::createRange(const APInt &Lo, const APInt &Hi) {
|
|
assert(Lo.getBitWidth() == Hi.getBitWidth() && "Mismatched bitwidths!");
|
|
|
|
Type *Ty = IntegerType::get(Context, Lo.getBitWidth());
|
|
return createRange(ConstantInt::get(Ty, Lo), ConstantInt::get(Ty, Hi));
|
|
}
|
|
|
|
MDNode *MDBuilder::createRange(Constant *Lo, Constant *Hi) {
|
|
// If the range is everything then it is useless.
|
|
if (Hi == Lo)
|
|
return nullptr;
|
|
|
|
// Return the range [Lo, Hi).
|
|
return MDNode::get(Context, {createConstant(Lo), createConstant(Hi)});
|
|
}
|
|
|
|
MDNode *MDBuilder::createCallees(ArrayRef<Function *> Callees) {
|
|
SmallVector<Metadata *, 4> Ops;
|
|
for (Function *F : Callees)
|
|
Ops.push_back(createConstant(F));
|
|
return MDNode::get(Context, Ops);
|
|
}
|
|
|
|
MDNode *MDBuilder::createAnonymousAARoot(StringRef Name, MDNode *Extra) {
|
|
// To ensure uniqueness the root node is self-referential.
|
|
auto Dummy = MDNode::getTemporary(Context, None);
|
|
|
|
SmallVector<Metadata *, 3> Args(1, Dummy.get());
|
|
if (Extra)
|
|
Args.push_back(Extra);
|
|
if (!Name.empty())
|
|
Args.push_back(createString(Name));
|
|
MDNode *Root = MDNode::get(Context, Args);
|
|
|
|
// At this point we have
|
|
// !0 = metadata !{} <- dummy
|
|
// !1 = metadata !{metadata !0} <- root
|
|
// Replace the dummy operand with the root node itself and delete the dummy.
|
|
Root->replaceOperandWith(0, Root);
|
|
|
|
// We now have
|
|
// !1 = metadata !{metadata !1} <- self-referential root
|
|
return Root;
|
|
}
|
|
|
|
MDNode *MDBuilder::createTBAARoot(StringRef Name) {
|
|
return MDNode::get(Context, createString(Name));
|
|
}
|
|
|
|
/// Return metadata for a non-root TBAA node with the given name,
|
|
/// parent in the TBAA tree, and value for 'pointsToConstantMemory'.
|
|
MDNode *MDBuilder::createTBAANode(StringRef Name, MDNode *Parent,
|
|
bool isConstant) {
|
|
if (isConstant) {
|
|
Constant *Flags = ConstantInt::get(Type::getInt64Ty(Context), 1);
|
|
return MDNode::get(Context,
|
|
{createString(Name), Parent, createConstant(Flags)});
|
|
}
|
|
return MDNode::get(Context, {createString(Name), Parent});
|
|
}
|
|
|
|
MDNode *MDBuilder::createAliasScopeDomain(StringRef Name) {
|
|
return MDNode::get(Context, createString(Name));
|
|
}
|
|
|
|
MDNode *MDBuilder::createAliasScope(StringRef Name, MDNode *Domain) {
|
|
return MDNode::get(Context, {createString(Name), Domain});
|
|
}
|
|
|
|
/// Return metadata for a tbaa.struct node with the given
|
|
/// struct field descriptions.
|
|
MDNode *MDBuilder::createTBAAStructNode(ArrayRef<TBAAStructField> Fields) {
|
|
SmallVector<Metadata *, 4> Vals(Fields.size() * 3);
|
|
Type *Int64 = Type::getInt64Ty(Context);
|
|
for (unsigned i = 0, e = Fields.size(); i != e; ++i) {
|
|
Vals[i * 3 + 0] = createConstant(ConstantInt::get(Int64, Fields[i].Offset));
|
|
Vals[i * 3 + 1] = createConstant(ConstantInt::get(Int64, Fields[i].Size));
|
|
Vals[i * 3 + 2] = Fields[i].Type;
|
|
}
|
|
return MDNode::get(Context, Vals);
|
|
}
|
|
|
|
/// Return metadata for a TBAA struct node in the type DAG
|
|
/// with the given name, a list of pairs (offset, field type in the type DAG).
|
|
MDNode *MDBuilder::createTBAAStructTypeNode(
|
|
StringRef Name, ArrayRef<std::pair<MDNode *, uint64_t>> Fields) {
|
|
SmallVector<Metadata *, 4> Ops(Fields.size() * 2 + 1);
|
|
Type *Int64 = Type::getInt64Ty(Context);
|
|
Ops[0] = createString(Name);
|
|
for (unsigned i = 0, e = Fields.size(); i != e; ++i) {
|
|
Ops[i * 2 + 1] = Fields[i].first;
|
|
Ops[i * 2 + 2] = createConstant(ConstantInt::get(Int64, Fields[i].second));
|
|
}
|
|
return MDNode::get(Context, Ops);
|
|
}
|
|
|
|
/// Return metadata for a TBAA scalar type node with the
|
|
/// given name, an offset and a parent in the TBAA type DAG.
|
|
MDNode *MDBuilder::createTBAAScalarTypeNode(StringRef Name, MDNode *Parent,
|
|
uint64_t Offset) {
|
|
ConstantInt *Off = ConstantInt::get(Type::getInt64Ty(Context), Offset);
|
|
return MDNode::get(Context,
|
|
{createString(Name), Parent, createConstant(Off)});
|
|
}
|
|
|
|
/// Return metadata for a TBAA tag node with the given
|
|
/// base type, access type and offset relative to the base type.
|
|
MDNode *MDBuilder::createTBAAStructTagNode(MDNode *BaseType, MDNode *AccessType,
|
|
uint64_t Offset, bool IsConstant) {
|
|
IntegerType *Int64 = Type::getInt64Ty(Context);
|
|
ConstantInt *Off = ConstantInt::get(Int64, Offset);
|
|
if (IsConstant) {
|
|
return MDNode::get(Context, {BaseType, AccessType, createConstant(Off),
|
|
createConstant(ConstantInt::get(Int64, 1))});
|
|
}
|
|
return MDNode::get(Context, {BaseType, AccessType, createConstant(Off)});
|
|
}
|
|
|
|
MDNode *MDBuilder::createTBAATypeNode(MDNode *Parent, uint64_t Size,
|
|
Metadata *Id,
|
|
ArrayRef<TBAAStructField> Fields) {
|
|
SmallVector<Metadata *, 4> Ops(3 + Fields.size() * 3);
|
|
Type *Int64 = Type::getInt64Ty(Context);
|
|
Ops[0] = Parent;
|
|
Ops[1] = createConstant(ConstantInt::get(Int64, Size));
|
|
Ops[2] = Id;
|
|
for (unsigned I = 0, E = Fields.size(); I != E; ++I) {
|
|
Ops[I * 3 + 3] = Fields[I].Type;
|
|
Ops[I * 3 + 4] = createConstant(ConstantInt::get(Int64, Fields[I].Offset));
|
|
Ops[I * 3 + 5] = createConstant(ConstantInt::get(Int64, Fields[I].Size));
|
|
}
|
|
return MDNode::get(Context, Ops);
|
|
}
|
|
|
|
MDNode *MDBuilder::createTBAAAccessTag(MDNode *BaseType, MDNode *AccessType,
|
|
uint64_t Offset, uint64_t Size,
|
|
bool IsImmutable) {
|
|
IntegerType *Int64 = Type::getInt64Ty(Context);
|
|
auto *OffsetNode = createConstant(ConstantInt::get(Int64, Offset));
|
|
auto *SizeNode = createConstant(ConstantInt::get(Int64, Size));
|
|
if (IsImmutable) {
|
|
auto *ImmutabilityFlagNode = createConstant(ConstantInt::get(Int64, 1));
|
|
return MDNode::get(Context, {BaseType, AccessType, OffsetNode, SizeNode,
|
|
ImmutabilityFlagNode});
|
|
}
|
|
return MDNode::get(Context, {BaseType, AccessType, OffsetNode, SizeNode});
|
|
}
|
|
|
|
MDNode *MDBuilder::createMutableTBAAAccessTag(MDNode *Tag) {
|
|
MDNode *BaseType = cast<MDNode>(Tag->getOperand(0));
|
|
MDNode *AccessType = cast<MDNode>(Tag->getOperand(1));
|
|
Metadata *OffsetNode = Tag->getOperand(2);
|
|
uint64_t Offset = mdconst::extract<ConstantInt>(OffsetNode)->getZExtValue();
|
|
|
|
bool NewFormat = isa<MDNode>(AccessType->getOperand(0));
|
|
|
|
// See if the tag is already mutable.
|
|
unsigned ImmutabilityFlagOp = NewFormat ? 4 : 3;
|
|
if (Tag->getNumOperands() <= ImmutabilityFlagOp)
|
|
return Tag;
|
|
|
|
// If Tag is already mutable then return it.
|
|
Metadata *ImmutabilityFlagNode = Tag->getOperand(ImmutabilityFlagOp);
|
|
if (!mdconst::extract<ConstantInt>(ImmutabilityFlagNode)->getValue())
|
|
return Tag;
|
|
|
|
// Otherwise, create another node.
|
|
if (!NewFormat)
|
|
return createTBAAStructTagNode(BaseType, AccessType, Offset);
|
|
|
|
Metadata *SizeNode = Tag->getOperand(3);
|
|
uint64_t Size = mdconst::extract<ConstantInt>(SizeNode)->getZExtValue();
|
|
return createTBAAAccessTag(BaseType, AccessType, Offset, Size);
|
|
}
|
|
|
|
MDNode *MDBuilder::createIrrLoopHeaderWeight(uint64_t Weight) {
|
|
Metadata *Vals[] = {
|
|
createString("loop_header_weight"),
|
|
createConstant(ConstantInt::get(Type::getInt64Ty(Context), Weight)),
|
|
};
|
|
return MDNode::get(Context, Vals);
|
|
}
|