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[mlir][NFC] Cleanup: Move helper functions to StaticValueUtils 

Reduce code duplication: Move various helper functions, that are duplicated in TensorDialect, MemRefDialect, LinalgDialect, StandardDialect, into a new StaticValueUtils.cpp.

Differential Revision: https://reviews.llvm.org/D104687
This commit is contained in:
Matthias Springer 2021-06-27 15:15:44 +09:00
parent 81f6d7c082
commit 0813700de1
17 changed files with 159 additions and 164 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
mlir/include/mlir/Dialect/Linalg/IR/LinalgOps.td
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@ -269,13 +269,13 @@ def Linalg_PadTensorOp : Linalg_Op<"pad_tensor",
// Return true if low padding is guaranteed to be 0.
bool hasZeroLowPad() {
return llvm::all_of(getMixedLowPad(), [](OpFoldResult ofr) {
return mlir::isEqualConstantInt(ofr, 0);
return getConstantIntValue(ofr) == static_cast<int64_t>(0);
});
}
// Return true if high padding is guaranteed to be 0.
bool hasZeroHighPad() {
return llvm::all_of(getMixedHighPad(), [](OpFoldResult ofr) {
return mlir::isEqualConstantInt(ofr, 0);
return getConstantIntValue(ofr) == static_cast<int64_t>(0);
});
}
}];

1
mlir/include/mlir/Dialect/Linalg/Transforms/Transforms.h
View File

@ -13,6 +13,7 @@
#include "mlir/Dialect/MemRef/IR/MemRef.h"
#include "mlir/Dialect/SCF/Utils.h"
#include "mlir/Dialect/Tensor/IR/Tensor.h"
#include "mlir/Dialect/Utils/StaticValueUtils.h"
#include "mlir/Dialect/Vector/VectorOps.h"
#include "mlir/IR/Identifier.h"
#include "mlir/IR/PatternMatch.h"

15
mlir/include/mlir/Dialect/StandardOps/IR/Ops.h
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@ -114,21 +114,6 @@ bool applyCmpPredicate(CmpIPredicate predicate, const APInt &lhs,
bool applyCmpPredicate(CmpFPredicate predicate, const APFloat &lhs,
const APFloat &rhs);
/// If ofr is a constant integer, i.e., an IntegerAttr or a ConstantOp with an
/// IntegerAttr, return the integer.
llvm::Optional<int64_t> getConstantIntValue(OpFoldResult ofr);
/// Return true if ofr and value are the same integer.
/// Ignore integer bitwidth and type mismatch that come from the fact there is
/// no IndexAttr and that IndexType has no bitwidth.
bool isEqualConstantInt(OpFoldResult ofr, int64_t value);
/// Return true if ofr1 and ofr2 are the same integer constant attribute values
/// or the same SSA value.
/// Ignore integer bitwitdh and type mismatch that come from the fact there is
/// no IndexAttr and that IndexType have no bitwidth.
bool isEqualConstantIntOrValue(OpFoldResult ofr1, OpFoldResult ofr2);
/// Returns the identity value attribute associated with an AtomicRMWKind op.
Attribute getIdentityValueAttr(AtomicRMWKind kind, Type resultType,
OpBuilder &builder, Location loc);

58
mlir/include/mlir/Dialect/Utils/StaticValueUtils.h Normal file
View File

@ -0,0 +1,58 @@
//===- StaticValueUtils.h - Utilities for static values ---------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This header file defines utilities for dealing with static values, e.g.,
// converting back and forth between Value and OpFoldResult. Such functionality
// is used in multiple dialects.
//
//===----------------------------------------------------------------------===//
#ifndef MLIR_DIALECT_UTILS_STATICVALUEUTILS_H
#define MLIR_DIALECT_UTILS_STATICVALUEUTILS_H
#include "mlir/IR/OpDefinition.h"
#include "mlir/Support/LLVM.h"
#include "llvm/ADT/SmallVector.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);
/// Helper function to dispatch multiple OpFoldResults into either the
/// `dynamicVec` (for Values) or into `staticVec` (for IntegerAttrs).
/// 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 dispatchIndexOpFoldResults(ArrayRef<OpFoldResult> ofrs,
SmallVectorImpl<Value> &dynamicVec,
SmallVectorImpl<int64_t> &staticVec,
int64_t sentinel);
/// Extract int64_t values from the assumed ArrayAttr of IntegerAttr.
SmallVector<int64_t, 4> extractFromI64ArrayAttr(Attribute attr);
/// If ofr is a constant integer or an IntegerAttr, return the integer.
Optional<int64_t> getConstantIntValue(OpFoldResult ofr);
/// Return true if ofr1 and ofr2 are the same integer constant attribute values
/// or the same SSA value.
/// Ignore integer bitwitdh and type mismatch that come from the fact there is
/// no IndexAttr and that IndexType have no bitwidth.
bool isEqualConstantIntOrValue(OpFoldResult ofr1, OpFoldResult ofr2);
} // namespace mlir
#endif // MLIR_DIALECT_UTILS_STATICVALUEUTILS_H

3
mlir/include/mlir/Interfaces/ViewLikeInterface.h
View File

@ -13,6 +13,7 @@
#ifndef MLIR_INTERFACES_VIEWLIKEINTERFACE_H_
#define MLIR_INTERFACES_VIEWLIKEINTERFACE_H_
#include "mlir/Dialect/Utils/StaticValueUtils.h"
#include "mlir/IR/Builders.h"
#include "mlir/IR/BuiltinAttributes.h"
#include "mlir/IR/BuiltinTypes.h"
@ -30,8 +31,6 @@ struct Range {
class OffsetSizeAndStrideOpInterface;
bool isEqualConstantInt(OpFoldResult ofr, int64_t value);
namespace detail {
LogicalResult verifyOffsetSizeAndStrideOp(OffsetSizeAndStrideOpInterface op);

4
mlir/include/mlir/Interfaces/ViewLikeInterface.td
View File

@ -444,7 +444,7 @@ def OffsetSizeAndStrideOpInterface : OpInterface<"OffsetSizeAndStrideOpInterface
/*methodBody=*/"",
/*defaultImplementation=*/[{
return ::llvm::all_of(getMixedStrides(), [](OpFoldResult ofr) {
return ::mlir::isEqualConstantInt(ofr, 1);
return ::mlir::getConstantIntValue(ofr) == static_cast<int64_t>(1);
});
}]
>,
@ -456,7 +456,7 @@ def OffsetSizeAndStrideOpInterface : OpInterface<"OffsetSizeAndStrideOpInterface
/*methodBody=*/"",
/*defaultImplementation=*/[{
return ::llvm::all_of(getMixedOffsets(), [](OpFoldResult ofr) {
return ::mlir::isEqualConstantInt(ofr, 0);
return ::mlir::getConstantIntValue(ofr) == static_cast<int64_t>(0);
});
}]
>,

9
mlir/lib/Conversion/StandardToLLVM/StandardToLLVM.cpp
View File

@ -20,6 +20,7 @@
#include "mlir/Dialect/Math/IR/Math.h"
#include "mlir/Dialect/MemRef/IR/MemRef.h"
#include "mlir/Dialect/StandardOps/IR/Ops.h"
#include "mlir/Dialect/Utils/StaticValueUtils.h"
#include "mlir/IR/Attributes.h"
#include "mlir/IR/BlockAndValueMapping.h"
#include "mlir/IR/Builders.h"
@ -3388,14 +3389,6 @@ struct SplatNdOpLowering : public ConvertOpToLLVMPattern<SplatOp> {
}
};
/// Helper function extracts int64_t from the assumedArrayAttr of IntegerAttr.
static 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();
}));
}
/// Conversion pattern that transforms a subview op into:
/// 1. An `llvm.mlir.undef` operation to create a memref descriptor
/// 2. Updates to the descriptor to introduce the data ptr, offset, size

27
mlir/lib/Dialect/Linalg/IR/LinalgOps.cpp
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@ -17,6 +17,7 @@
#include "mlir/Dialect/MemRef/IR/MemRef.h"
#include "mlir/Dialect/StandardOps/IR/Ops.h"
#include "mlir/Dialect/Tensor/IR/Tensor.h"
#include "mlir/Dialect/Utils/StaticValueUtils.h"
#include "mlir/IR/AffineExprVisitor.h"
#include "mlir/IR/Matchers.h"
#include "mlir/IR/OpImplementation.h"
@ -116,24 +117,6 @@ static SmallVector<Value> getAsValues(OpBuilder &b, Location loc,
}));
}
/// 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.
static 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());
}
/// This is a common class used for patterns of the form
/// ```
/// someop(memrefcast(%src)) -> someop(%src)
@ -819,14 +802,6 @@ LogicalResult InitTensorOp::reifyReturnTypeShapesPerResultDim(
// PadTensorOp
//===----------------------------------------------------------------------===//
/// Extract int64_t values from the assumed ArrayAttr of IntegerAttr.
static 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();
}));
}
static LogicalResult verify(PadTensorOp op) {
auto sourceType = op.source().getType().cast<RankedTensorType>();
auto resultType = op.result().getType().cast<RankedTensorType>();

1
mlir/lib/Dialect/Linalg/Transforms/ComprehensiveBufferize.cpp
View File

@ -110,6 +110,7 @@
#include "mlir/Dialect/Linalg/Passes.h"
#include "mlir/Dialect/MemRef/IR/MemRef.h"
#include "mlir/Dialect/SCF/SCF.h"
#include "mlir/Dialect/Utils/StaticValueUtils.h"
#include "mlir/Dialect/Vector/VectorOps.h"
#include "mlir/IR/Operation.h"
#include "mlir/Pass/Pass.h"

10
mlir/lib/Dialect/Linalg/Transforms/Vectorization.cpp
View File

@ -814,8 +814,8 @@ struct GenericPadTensorOpVectorizationPattern
readInBounds.push_back(false);
// Write is out-of-bounds if low padding > 0.
writeInBounds.push_back(
isEqualConstantIntOrValue(padOp.getMixedLowPad()[i],
rewriter.getIndexAttr(0)));
getConstantIntValue(padOp.getMixedLowPad()[i]) ==
static_cast<int64_t>(0));
} else {
// Neither source nor result dim of padOp is static. Cannot vectorize
// the copy.
@ -1098,9 +1098,9 @@ struct PadTensorOpVectorizationWithInsertSlicePattern
SmallVector<int64_t> expectedSizes(tensorRank - vecRank, 1);
expectedSizes.append(vecType.getShape().begin(), vecType.getShape().end());
if (!llvm::all_of(
llvm::zip(insertOp.getMixedSizes(), expectedSizes),
[](auto it) { return isEqualConstantInt(std::get<0>(it),
std::get<1>(it)); }))
llvm::zip(insertOp.getMixedSizes(), expectedSizes), [](auto it) {
return getConstantIntValue(std::get<0>(it)) == std::get<1>(it);
}))
return failure();
// Generate TransferReadOp: Read entire source tensor and add high padding.

1
mlir/lib/Dialect/MemRef/IR/CMakeLists.txt
View File

@ -14,6 +14,7 @@ add_mlir_dialect_library(MLIRMemRef
LINK_LIBS PUBLIC
MLIRDialect
MLIRDialectUtils
MLIRInferTypeOpInterface
MLIRIR
MLIRMemRefUtils

35
mlir/lib/Dialect/MemRef/IR/MemRefOps.cpp
View File

@ -11,6 +11,7 @@
#include "mlir/Dialect/StandardOps/IR/Ops.h"
#include "mlir/Dialect/StandardOps/Utils/Utils.h"
#include "mlir/Dialect/Tensor/IR/Tensor.h"
#include "mlir/Dialect/Utils/StaticValueUtils.h"
#include "mlir/IR/AffineMap.h"
#include "mlir/IR/Builders.h"
#include "mlir/IR/BuiltinTypes.h"
@ -32,40 +33,6 @@ Operation *MemRefDialect::materializeConstant(OpBuilder &builder,
return builder.create<mlir::ConstantOp>(loc, type, value);
}
/// Extract int64_t values from the assumed ArrayAttr of IntegerAttr.
static 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();
}));
}
/// 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.
static 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());
}
static void dispatchIndexOpFoldResults(ArrayRef<OpFoldResult> ofrs,
SmallVectorImpl<Value> &dynamicVec,
SmallVectorImpl<int64_t> &staticVec,
int64_t sentinel) {
for (auto ofr : ofrs)
dispatchIndexOpFoldResult(ofr, dynamicVec, staticVec, sentinel);
}
//===----------------------------------------------------------------------===//
// Common canonicalization pattern support logic
//===----------------------------------------------------------------------===//

32
mlir/lib/Dialect/StandardOps/IR/Ops.cpp
View File

@ -33,38 +33,6 @@
using namespace mlir;
/// If ofr is a constant integer, i.e., an IntegerAttr or a ConstantOp with an
/// IntegerAttr, return the integer.
llvm::Optional<int64_t> mlir::getConstantIntValue(OpFoldResult ofr) {
Attribute attr = ofr.dyn_cast<Attribute>();
// Note: isa+cast-like pattern allows writing the condition below as 1 line.
if (!attr && ofr.get<Value>().getDefiningOp<ConstantOp>())
attr = ofr.get<Value>().getDefiningOp<ConstantOp>().getValue();
if (auto intAttr = attr.dyn_cast_or_null<IntegerAttr>())
return intAttr.getValue().getSExtValue();
return llvm::None;
}
/// Return true if ofr and value are the same integer.
/// Ignore integer bitwidth and type mismatch that come from the fact there is
/// no IndexAttr and that IndexType has no bitwidth.
bool mlir::isEqualConstantInt(OpFoldResult ofr, int64_t value) {
auto ofrValue = getConstantIntValue(ofr);
return ofrValue && *ofrValue == value;
}
/// 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 mlir::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 && v2 && v1 == v2;
}
//===----------------------------------------------------------------------===//
// StandardOpsDialect Interfaces
//===----------------------------------------------------------------------===//

1
mlir/lib/Dialect/Tensor/IR/CMakeLists.txt
View File

@ -13,6 +13,7 @@ add_mlir_dialect_library(MLIRTensor
LINK_LIBS PUBLIC
MLIRCastInterfaces
MLIRDialectUtils
MLIRIR
MLIRSideEffectInterfaces
MLIRSupport

42
mlir/lib/Dialect/Tensor/IR/TensorOps.cpp
View File

@ -8,6 +8,7 @@
#include "mlir/Dialect/StandardOps/Utils/Utils.h"
#include "mlir/Dialect/Tensor/IR/Tensor.h"
#include "mlir/Dialect/Utils/StaticValueUtils.h"
#include "mlir/IR/BlockAndValueMapping.h"
#include "mlir/IR/Builders.h"
#include "mlir/IR/Matchers.h"
@ -516,32 +517,6 @@ static LogicalResult verify(ReshapeOp op) {
// ExtractSliceOp
//===----------------------------------------------------------------------===//
/// 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.
static 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());
}
static void dispatchIndexOpFoldResults(ArrayRef<OpFoldResult> ofrs,
SmallVectorImpl<Value> &dynamicVec,
SmallVectorImpl<int64_t> &staticVec,
int64_t sentinel) {
for (auto ofr : ofrs)
dispatchIndexOpFoldResult(ofr, dynamicVec, staticVec, sentinel);
}
/// An extract_slice op result type can be fully inferred from the source type
/// and the static representation of offsets, sizes and strides. Special
/// sentinels encode the dynamic case.
@ -563,14 +538,6 @@ Type ExtractSliceOp::inferResultType(RankedTensorType sourceRankedTensorType,
sourceRankedTensorType.getElementType());
}
/// Extract int64_t values from the assumed ArrayAttr of IntegerAttr.
static 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();
}));
}
Type ExtractSliceOp::inferResultType(
RankedTensorType sourceRankedTensorType,
ArrayRef<OpFoldResult> leadingStaticOffsets,
@ -890,17 +857,16 @@ foldIdentityOffsetSizeAndStrideOpInterface(OffsetSizeAndStrideOpInterface op,
ShapedType shapedType) {
OpBuilder b(op.getContext());
for (OpFoldResult ofr : op.getMixedOffsets())
if (!isEqualConstantIntOrValue(ofr, b.getIndexAttr(0)))
if (getConstantIntValue(ofr) != static_cast<int64_t>(0))
return failure();
// Rank-reducing noops only need to inspect the leading dimensions: llvm::zip
// is appropriate.
auto shape = shapedType.getShape();
for (auto it : llvm::zip(op.getMixedSizes(), shape))
if (!isEqualConstantIntOrValue(std::get<0>(it),
b.getIndexAttr(std::get<1>(it))))
if (getConstantIntValue(std::get<0>(it)) != std::get<1>(it))
return failure();
for (OpFoldResult ofr : op.getMixedStrides())
if (!isEqualConstantIntOrValue(ofr, b.getIndexAttr(1)))
if (getConstantIntValue(ofr) != static_cast<int64_t>(1))
return failure();
return success();
}

1
mlir/lib/Dialect/Utils/CMakeLists.txt
View File

@ -1,5 +1,6 @@
add_mlir_library(MLIRDialectUtils
StructuredOpsUtils.cpp
StaticValueUtils.cpp
LINK_LIBS PUBLIC
MLIRIR

79
mlir/lib/Dialect/Utils/StaticValueUtils.cpp Normal file
View File

@ -0,0 +1,79 @@
//===- 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();
}));
}
/// 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