96 lines
3.6 KiB
C++
96 lines
3.6 KiB
C++
//===- StaticValueUtils.cpp - Utilities for dealing with static values ----===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "mlir/Dialect/Utils/StaticValueUtils.h"
|
|
#include "mlir/IR/Matchers.h"
|
|
#include "mlir/Support/LLVM.h"
|
|
#include "llvm/ADT/APSInt.h"
|
|
|
|
namespace mlir {
|
|
|
|
/// Helper function to dispatch an OpFoldResult into either the `dynamicVec` if
|
|
/// it is a Value or into `staticVec` if it is an IntegerAttr.
|
|
/// In the case of a Value, a copy of the `sentinel` value is also pushed to
|
|
/// `staticVec`. This is useful to extract mixed static and dynamic entries that
|
|
/// come from an AttrSizedOperandSegments trait.
|
|
void dispatchIndexOpFoldResult(OpFoldResult ofr,
|
|
SmallVectorImpl<Value> &dynamicVec,
|
|
SmallVectorImpl<int64_t> &staticVec,
|
|
int64_t sentinel) {
|
|
if (auto v = ofr.dyn_cast<Value>()) {
|
|
dynamicVec.push_back(v);
|
|
staticVec.push_back(sentinel);
|
|
return;
|
|
}
|
|
APInt apInt = ofr.dyn_cast<Attribute>().cast<IntegerAttr>().getValue();
|
|
staticVec.push_back(apInt.getSExtValue());
|
|
}
|
|
|
|
void dispatchIndexOpFoldResults(ArrayRef<OpFoldResult> ofrs,
|
|
SmallVectorImpl<Value> &dynamicVec,
|
|
SmallVectorImpl<int64_t> &staticVec,
|
|
int64_t sentinel) {
|
|
for (OpFoldResult ofr : ofrs)
|
|
dispatchIndexOpFoldResult(ofr, dynamicVec, staticVec, sentinel);
|
|
}
|
|
|
|
/// Extract int64_t values from the assumed ArrayAttr of IntegerAttr.
|
|
SmallVector<int64_t, 4> extractFromI64ArrayAttr(Attribute attr) {
|
|
return llvm::to_vector<4>(
|
|
llvm::map_range(attr.cast<ArrayAttr>(), [](Attribute a) -> int64_t {
|
|
return a.cast<IntegerAttr>().getInt();
|
|
}));
|
|
}
|
|
|
|
/// Given a value, try to extract a constant Attribute. If this fails, return
|
|
/// the original value.
|
|
OpFoldResult getAsOpFoldResult(Value val) {
|
|
Attribute attr;
|
|
if (matchPattern(val, m_Constant(&attr)))
|
|
return attr;
|
|
return val;
|
|
}
|
|
|
|
/// Given an array of values, try to extract a constant Attribute from each
|
|
/// value. If this fails, return the original value.
|
|
SmallVector<OpFoldResult> getAsOpFoldResult(ArrayRef<Value> values) {
|
|
return llvm::to_vector<4>(
|
|
llvm::map_range(values, [](Value v) { return getAsOpFoldResult(v); }));
|
|
}
|
|
|
|
/// If ofr is a constant integer or an IntegerAttr, return the integer.
|
|
Optional<int64_t> getConstantIntValue(OpFoldResult ofr) {
|
|
// Case 1: Check for Constant integer.
|
|
if (auto val = ofr.dyn_cast<Value>()) {
|
|
APSInt intVal;
|
|
if (matchPattern(val, m_ConstantInt(&intVal)))
|
|
return intVal.getSExtValue();
|
|
return llvm::None;
|
|
}
|
|
// Case 2: Check for IntegerAttr.
|
|
Attribute attr = ofr.dyn_cast<Attribute>();
|
|
if (auto intAttr = attr.dyn_cast_or_null<IntegerAttr>())
|
|
return intAttr.getValue().getSExtValue();
|
|
return llvm::None;
|
|
}
|
|
|
|
/// Return true if ofr1 and ofr2 are the same integer constant attribute values
|
|
/// or the same SSA value.
|
|
/// Ignore integer bitwidth and type mismatch that come from the fact there is
|
|
/// no IndexAttr and that IndexType has no bitwidth.
|
|
bool isEqualConstantIntOrValue(OpFoldResult ofr1, OpFoldResult ofr2) {
|
|
auto cst1 = getConstantIntValue(ofr1), cst2 = getConstantIntValue(ofr2);
|
|
if (cst1 && cst2 && *cst1 == *cst2)
|
|
return true;
|
|
auto v1 = ofr1.dyn_cast<Value>(), v2 = ofr2.dyn_cast<Value>();
|
|
return v1 && v1 == v2;
|
|
}
|
|
|
|
} // namespace mlir
|
|
|