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MLIR
20.0.0git
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#include "mlir/Analysis//FlatLinearValueConstraints.h"#include "mlir/Analysis/Presburger/LinearTransform.h"#include "mlir/Analysis/Presburger/PresburgerSpace.h"#include "mlir/Analysis/Presburger/Simplex.h"#include "mlir/Analysis/Presburger/Utils.h"#include "mlir/IR/AffineExprVisitor.h"#include "mlir/IR/Builders.h"#include "mlir/IR/IntegerSet.h"#include "mlir/Support/LLVM.h"#include "llvm/ADT/STLExtras.h"#include "llvm/ADT/SmallPtrSet.h"#include "llvm/ADT/SmallVector.h"#include "llvm/Support/Debug.h"#include "llvm/Support/raw_ostream.h"#include <optional>Go to the source code of this file.
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| #define | DEBUG_TYPE "flat-value-constraints" |
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| static LogicalResult | getFlattenedAffineExprs (ArrayRef< AffineExpr > exprs, unsigned numDims, unsigned numSymbols, std::vector< SmallVector< int64_t, 8 >> *flattenedExprs, FlatLinearConstraints *localVarCst, bool addConservativeSemiAffineBounds=false) |
| static bool | detectAsMod (const FlatLinearConstraints &cst, unsigned pos, unsigned offset, unsigned num, int64_t lbConst, int64_t ubConst, MLIRContext *context, SmallVectorImpl< AffineExpr > &memo) |
| static bool | detectAsFloorDiv (const FlatLinearConstraints &cst, unsigned pos, MLIRContext *context, SmallVectorImpl< AffineExpr > &exprs) |
Check if the pos^th variable can be expressed as a floordiv of an affine function of other variables (where the divisor is a positive constant) given the initial set of expressions in exprs. More... | |
| static bool | areVarsAligned (const FlatLinearValueConstraints &a, const FlatLinearValueConstraints &b) |
| Checks if two constraint systems are in the same space, i.e., if they are associated with the same set of variables, appearing in the same order. More... | |
| static bool LLVM_ATTRIBUTE_UNUSED | areVarsUnique (const FlatLinearValueConstraints &cst, unsigned start, unsigned end) |
Checks if the SSA values associated with cst's variables in range [start, end) are unique. More... | |
| static bool LLVM_ATTRIBUTE_UNUSED | areVarsUnique (const FlatLinearValueConstraints &cst) |
Checks if the SSA values associated with cst's variables are unique. More... | |
| static bool LLVM_ATTRIBUTE_UNUSED | areVarsUnique (const FlatLinearValueConstraints &cst, VarKind kind) |
Checks if the SSA values associated with cst's variables of kind kind are unique. More... | |
| static void | mergeAndAlignVars (unsigned offset, FlatLinearValueConstraints *a, FlatLinearValueConstraints *b) |
| Merge and align the variables of A and B starting at 'offset', so that both constraint systems get the union of the contained variables that is dimension-wise and symbol-wise unique; both constraint systems are updated so that they have the union of all variables, with A's original variables appearing first followed by any of B's variables that didn't appear in A. More... | |
| #define DEBUG_TYPE "flat-value-constraints" |
Definition at line 26 of file FlatLinearValueConstraints.cpp.
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Checks if two constraint systems are in the same space, i.e., if they are associated with the same set of variables, appearing in the same order.
Definition at line 970 of file FlatLinearValueConstraints.cpp.
References mlir::FlatLinearValueConstraints::getMaybeValues(), mlir::presburger::IntegerRelation::getNumDomainVars(), mlir::presburger::IntegerRelation::getNumRangeVars(), and mlir::presburger::IntegerRelation::getNumSymbolVars().
Referenced by mlir::FlatLinearValueConstraints::areVarsAlignedWithOther(), mergeAndAlignVars(), and mlir::FlatLinearValueConstraints::unionBoundingBox().
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Checks if the SSA values associated with cst's variables are unique.
Definition at line 1015 of file FlatLinearValueConstraints.cpp.
References areVarsUnique(), and mlir::presburger::IntegerRelation::getNumDimAndSymbolVars().
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Checks if the SSA values associated with cst's variables in range [start, end) are unique.
Definition at line 991 of file FlatLinearValueConstraints.cpp.
References mlir::FlatLinearValueConstraints::getMaybeValues(), and mlir::presburger::IntegerRelation::getNumDimAndSymbolVars().
Referenced by areVarsUnique().
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Checks if the SSA values associated with cst's variables of kind kind are unique.
Definition at line 1022 of file FlatLinearValueConstraints.cpp.
References areVarsUnique(), mlir::presburger::IntegerRelation::getNumDimAndSymbolVars(), and mlir::presburger::IntegerRelation::getNumDimVars().
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Check if the pos^th variable can be expressed as a floordiv of an affine function of other variables (where the divisor is a positive constant) given the initial set of expressions in exprs.
If it can be, the corresponding position in exprs is set as the detected affine expr. For eg: 4q <= i + j <= 4q + 3 <=> q = (i + j) floordiv 4. An equality can also yield a floordiv: eg. 4q = i + j <=> q = (i + j) floordiv 4. 32q + 28 <= i <= 32q + 31 => q = i floordiv 32.
Definition at line 418 of file FlatLinearValueConstraints.cpp.
References mlir::presburger::computeSingleVarRepr(), mlir::presburger::Equality, mlir::getAffineConstantExpr(), mlir::presburger::IntegerRelation::getNumCols(), mlir::presburger::IntegerRelation::getNumVars(), and mlir::presburger::None.
Referenced by mlir::FlatLinearConstraints::computeLocalVars(), and mlir::FlatLinearConstraints::getSliceBounds().
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Definition at line 302 of file FlatLinearValueConstraints.cpp.
Referenced by mlir::FlatLinearConstraints::getSliceBounds().
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Definition at line 136 of file FlatLinearValueConstraints.cpp.
References mlir::presburger::IntegerRelation::clearAndCopyFrom().
Referenced by mlir::getFlattenedAffineExprs().
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Merge and align the variables of A and B starting at 'offset', so that both constraint systems get the union of the contained variables that is dimension-wise and symbol-wise unique; both constraint systems are updated so that they have the union of all variables, with A's original variables appearing first followed by any of B's variables that didn't appear in A.
Local variables in B that have the same division representation as local variables in A are merged into one. We allow A and B to have non-unique values for their variables; in such cases, they are still aligned with the variables appearing first aligned with those appearing first in the other system from left to right.
Definition at line 1044 of file FlatLinearValueConstraints.cpp.
References mlir::FlatLinearValueConstraints::appendDimVar(), areVarsAligned(), mlir::FlatLinearValueConstraints::findVar(), mlir::FlatLinearValueConstraints::getMaybeValues(), mlir::presburger::IntegerRelation::getNumDimVars(), mlir::FlatLinearValueConstraints::getValue(), mlir::FlatLinearValueConstraints::getValues(), mlir::FlatLinearValueConstraints::insertDimVar(), mlir::presburger::IntegerRelation::mergeLocalVars(), mlir::FlatLinearValueConstraints::mergeSymbolVars(), and mlir::presburger::IntegerRelation::swapVar().
Referenced by mlir::FlatLinearValueConstraints::mergeAndAlignVarsWithOther(), and mlir::FlatLinearValueConstraints::unionBoundingBox().
1.9.1