[Mlir-commits] [mlir] [mlir][loops] Add getters for multi dim loop variables in `LoopLikeOpInterface` (PR #94516)

llvmlistbot at llvm.org llvmlistbot at llvm.org
Wed Jun 5 18:56:50 PDT 2024


https://github.com/srcarroll updated https://github.com/llvm/llvm-project/pull/94516

>From 5020e498440b0016adef7e99806aa55c4837b441 Mon Sep 17 00:00:00 2001
From: Sam <srcarroll314 at gmail.com>
Date: Wed, 5 Jun 2024 13:08:22 -0500
Subject: [PATCH 1/3] Add getters for multi dim loop variables in
 LoopLikeOpInterface

---
 .../mlir/Dialect/Affine/IR/AffineOps.td       |  4 +-
 mlir/include/mlir/Dialect/SCF/IR/SCFOps.td    | 37 ++--------
 .../mlir/Interfaces/LoopLikeInterface.td      | 65 +++++++++++------
 mlir/lib/Dialect/Affine/IR/AffineOps.cpp      | 20 +++---
 mlir/lib/Dialect/SCF/IR/SCF.cpp               | 70 +++++++------------
 .../Dialect/SCF/LoopLikeSCFOpsTest.cpp        |  8 +++
 6 files changed, 97 insertions(+), 107 deletions(-)

diff --git a/mlir/include/mlir/Dialect/Affine/IR/AffineOps.td b/mlir/include/mlir/Dialect/Affine/IR/AffineOps.td
index 3640055ea8da8..bb2c29b5733b8 100644
--- a/mlir/include/mlir/Dialect/Affine/IR/AffineOps.td
+++ b/mlir/include/mlir/Dialect/Affine/IR/AffineOps.td
@@ -118,8 +118,8 @@ def AffineForOp : Affine_Op<"for",
     [AttrSizedOperandSegments, AutomaticAllocationScope,
      ImplicitAffineTerminator, ConditionallySpeculatable,
      RecursiveMemoryEffects, DeclareOpInterfaceMethods<LoopLikeOpInterface,
-     ["getSingleInductionVar", "getSingleLowerBound", "getSingleStep",
-      "getSingleUpperBound", "getYieldedValuesMutable",
+     ["getInductionVars", "getMixedLowerBound", "getMixedStep",
+      "getMixedUpperBound", "getYieldedValuesMutable",
       "replaceWithAdditionalYields"]>,
      DeclareOpInterfaceMethods<RegionBranchOpInterface,
      ["getEntrySuccessorOperands"]>]> {
diff --git a/mlir/include/mlir/Dialect/SCF/IR/SCFOps.td b/mlir/include/mlir/Dialect/SCF/IR/SCFOps.td
index 0b063aa772bab..3b28ca8b21d0f 100644
--- a/mlir/include/mlir/Dialect/SCF/IR/SCFOps.td
+++ b/mlir/include/mlir/Dialect/SCF/IR/SCFOps.td
@@ -136,8 +136,8 @@ def ExecuteRegionOp : SCF_Op<"execute_region", [
 def ForOp : SCF_Op<"for",
       [AutomaticAllocationScope, DeclareOpInterfaceMethods<LoopLikeOpInterface,
        ["getInitsMutable", "getLoopResults", "getRegionIterArgs",
-        "getSingleInductionVar", "getSingleLowerBound", "getSingleStep",
-        "getSingleUpperBound", "getYieldedValuesMutable",
+        "getInductionVars", "getMixedLowerBound", "getMixedStep",
+        "getMixedUpperBound", "getYieldedValuesMutable",
         "promoteIfSingleIteration", "replaceWithAdditionalYields",
         "yieldTiledValuesAndReplace"]>,
        AllTypesMatch<["lowerBound", "upperBound", "step"]>,
@@ -301,8 +301,8 @@ def ForallOp : SCF_Op<"forall", [
        AttrSizedOperandSegments,
        AutomaticAllocationScope,
        DeclareOpInterfaceMethods<LoopLikeOpInterface,
-          ["getInitsMutable", "getRegionIterArgs", "getSingleInductionVar", 
-           "getSingleLowerBound", "getSingleUpperBound", "getSingleStep",
+          ["getInitsMutable", "getRegionIterArgs", "getInductionVars", 
+           "getMixedLowerBound", "getMixedUpperBound", "getMixedStep",
            "promoteIfSingleIteration", "yieldTiledValuesAndReplace"]>,
        RecursiveMemoryEffects,
        SingleBlockImplicitTerminator<"scf::InParallelOp">,
@@ -510,24 +510,6 @@ def ForallOp : SCF_Op<"forall", [
   ];
 
   let extraClassDeclaration = [{
-    // Get lower bounds as OpFoldResult.
-    SmallVector<OpFoldResult> getMixedLowerBound() {
-      Builder b(getOperation()->getContext());
-      return getMixedValues(getStaticLowerBound(), getDynamicLowerBound(), b);
-    }
-
-    // Get upper bounds as OpFoldResult.
-    SmallVector<OpFoldResult> getMixedUpperBound() {
-      Builder b(getOperation()->getContext());
-      return getMixedValues(getStaticUpperBound(), getDynamicUpperBound(), b);
-    }
-
-    // Get steps as OpFoldResult.
-    SmallVector<OpFoldResult> getMixedStep() {
-      Builder b(getOperation()->getContext());
-      return getMixedValues(getStaticStep(), getDynamicStep(), b);
-    }
-
     /// Get lower bounds as values.
     SmallVector<Value> getLowerBound(OpBuilder &b) {
       return getValueOrCreateConstantIndexOp(b, getLoc(), getMixedLowerBound());
@@ -584,10 +566,6 @@ def ForallOp : SCF_Op<"forall", [
                                     getNumDynamicControlOperands() + getRank());
     }
 
-    ::mlir::ValueRange getInductionVars() {
-      return getBody()->getArguments().take_front(getRank());
-    }
-
     ::mlir::Value getInductionVar(int64_t idx) {
       return getInductionVars()[idx];
     }
@@ -765,8 +743,8 @@ def IfOp : SCF_Op<"if", [DeclareOpInterfaceMethods<RegionBranchOpInterface, [
 def ParallelOp : SCF_Op<"parallel",
     [AutomaticAllocationScope,
      AttrSizedOperandSegments,
-     DeclareOpInterfaceMethods<LoopLikeOpInterface, ["getSingleInductionVar",
-          "getSingleLowerBound", "getSingleUpperBound", "getSingleStep"]>,
+     DeclareOpInterfaceMethods<LoopLikeOpInterface, ["getInductionVars",
+          "getMixedLowerBound", "getMixedUpperBound", "getMixedStep"]>,
      RecursiveMemoryEffects,
      DeclareOpInterfaceMethods<RegionBranchOpInterface>,
      SingleBlockImplicitTerminator<"scf::ReduceOp">,
@@ -846,9 +824,6 @@ def ParallelOp : SCF_Op<"parallel",
   ];
 
   let extraClassDeclaration = [{
-    ValueRange getInductionVars() {
-      return getBody()->getArguments();
-    }
     unsigned getNumLoops() { return getStep().size(); }
     unsigned getNumReductions() { return getInitVals().size(); }
   }];
diff --git a/mlir/include/mlir/Interfaces/LoopLikeInterface.td b/mlir/include/mlir/Interfaces/LoopLikeInterface.td
index f0dc6e60eba58..813779c852027 100644
--- a/mlir/include/mlir/Interfaces/LoopLikeInterface.td
+++ b/mlir/include/mlir/Interfaces/LoopLikeInterface.td
@@ -93,51 +93,47 @@ def LoopLikeOpInterface : OpInterface<"LoopLikeOpInterface"> {
       }]
     >,
     InterfaceMethod<[{
-        If there is a single induction variable return it, otherwise return
-        std::nullopt.
+        Return all induction variables.
       }],
-      /*retTy=*/"::std::optional<::mlir::Value>",
-      /*methodName=*/"getSingleInductionVar",
+      /*retTy=*/"::mlir::ValueRange",
+      /*methodName=*/"getInductionVars",
       /*args=*/(ins),
       /*methodBody=*/"",
       /*defaultImplementation=*/[{
-        return std::nullopt;
+        return {};
       }]
     >,
     InterfaceMethod<[{
-        Return the single lower bound value or attribute if it exists, otherwise
-        return std::nullopt.
+        Return all lower bounds.
       }],
-      /*retTy=*/"::std::optional<::mlir::OpFoldResult>",
-      /*methodName=*/"getSingleLowerBound",
+      /*retTy=*/"::llvm::SmallVector<::mlir::OpFoldResult>",
+      /*methodName=*/"getMixedLowerBound",
       /*args=*/(ins),
       /*methodBody=*/"",
       /*defaultImplementation=*/[{
-        return std::nullopt;
+        return {};
       }]
     >,
     InterfaceMethod<[{
-        Return the single step value or attribute if it exists, otherwise
-        return std::nullopt.
+        Return all steps.
       }],
-      /*retTy=*/"::std::optional<::mlir::OpFoldResult>",
-      /*methodName=*/"getSingleStep",
+      /*retTy=*/"::llvm::SmallVector<::mlir::OpFoldResult>",
+      /*methodName=*/"getMixedStep",
       /*args=*/(ins),
       /*methodBody=*/"",
       /*defaultImplementation=*/[{
-        return std::nullopt;
+        return {};
       }]
     >,
     InterfaceMethod<[{
-        Return the single upper bound value or attribute if it exists, otherwise
-        return std::nullopt.
+        Return all upper bounds.
       }],
-      /*retTy=*/"::std::optional<::mlir::OpFoldResult>",
-      /*methodName=*/"getSingleUpperBound",
+      /*retTy=*/"::llvm::SmallVector<::mlir::OpFoldResult>",
+      /*methodName=*/"getMixedUpperBound",
       /*args=*/(ins),
       /*methodBody=*/"",
       /*defaultImplementation=*/[{
-        return std::nullopt;
+        return {};
       }]
     >,
     InterfaceMethod<[{
@@ -235,6 +231,35 @@ def LoopLikeOpInterface : OpInterface<"LoopLikeOpInterface"> {
   }];
 
   let extraSharedClassDeclaration = [{
+    /// If there is a single induction variable return it, otherwise return
+    /// std::nullopt.
+    ::std::optional<::mlir::Value> getSingleInductionVar() {
+      if (this->getInductionVars().size() == 1)
+          return this->getInductionVars()[0];
+        return std::nullopt;
+    }
+    /// Return the single lower bound value or attribute if it exists, otherwise
+    /// return std::nullopt.
+    ::std::optional<::mlir::OpFoldResult> getSingleLowerBound() {
+      if (this->getMixedLowerBound().size() == 1)
+          return this->getMixedLowerBound()[0];
+        return std::nullopt;
+    }
+    /// Return the single step value or attribute if it exists, otherwise
+    /// return std::nullopt.
+    ::std::optional<::mlir::OpFoldResult> getSingleStep() {
+      if (this->getMixedStep().size() == 1)
+          return this->getMixedStep()[0];
+        return std::nullopt;
+    }
+    /// Return the single upper bound value or attribute if it exists, otherwise
+    /// return std::nullopt.
+    ::std::optional<::mlir::OpFoldResult> getSingleUpperBound() {
+      if (this->getMixedUpperBound().size() == 1)
+          return this->getMixedUpperBound()[0];
+        return std::nullopt;
+    }
+
     /// Append the specified additional "init" operands: replace this loop with
     /// a new loop that has the additional init operands. The loop body of this
     /// loop is moved over to the new loop.
diff --git a/mlir/lib/Dialect/Affine/IR/AffineOps.cpp b/mlir/lib/Dialect/Affine/IR/AffineOps.cpp
index 2e31487bd55a0..746a9c919560c 100644
--- a/mlir/lib/Dialect/Affine/IR/AffineOps.cpp
+++ b/mlir/lib/Dialect/Affine/IR/AffineOps.cpp
@@ -2454,27 +2454,25 @@ bool AffineForOp::matchingBoundOperandList() {
 
 SmallVector<Region *> AffineForOp::getLoopRegions() { return {&getRegion()}; }
 
-std::optional<Value> AffineForOp::getSingleInductionVar() {
-  return getInductionVar();
-}
+ValueRange AffineForOp::getInductionVars() { return {getInductionVar()}; }
 
-std::optional<OpFoldResult> AffineForOp::getSingleLowerBound() {
+SmallVector<OpFoldResult> AffineForOp::getMixedLowerBound() {
   if (!hasConstantLowerBound())
-    return std::nullopt;
+    return {};
   OpBuilder b(getContext());
-  return OpFoldResult(b.getI64IntegerAttr(getConstantLowerBound()));
+  return {OpFoldResult(b.getI64IntegerAttr(getConstantLowerBound()))};
 }
 
-std::optional<OpFoldResult> AffineForOp::getSingleStep() {
+SmallVector<OpFoldResult> AffineForOp::getMixedStep() {
   OpBuilder b(getContext());
-  return OpFoldResult(b.getI64IntegerAttr(getStepAsInt()));
+  return {OpFoldResult(b.getI64IntegerAttr(getStepAsInt()))};
 }
 
-std::optional<OpFoldResult> AffineForOp::getSingleUpperBound() {
+SmallVector<OpFoldResult> AffineForOp::getMixedUpperBound() {
   if (!hasConstantUpperBound())
-    return std::nullopt;
+    return {};
   OpBuilder b(getContext());
-  return OpFoldResult(b.getI64IntegerAttr(getConstantUpperBound()));
+  return {OpFoldResult(b.getI64IntegerAttr(getConstantUpperBound()))};
 }
 
 FailureOr<LoopLikeOpInterface> AffineForOp::replaceWithAdditionalYields(
diff --git a/mlir/lib/Dialect/SCF/IR/SCF.cpp b/mlir/lib/Dialect/SCF/IR/SCF.cpp
index 107fd0690f193..e275ff1849c10 100644
--- a/mlir/lib/Dialect/SCF/IR/SCF.cpp
+++ b/mlir/lib/Dialect/SCF/IR/SCF.cpp
@@ -378,20 +378,18 @@ LogicalResult ForOp::verifyRegions() {
   return success();
 }
 
-std::optional<Value> ForOp::getSingleInductionVar() {
-  return getInductionVar();
-}
+ValueRange ForOp::getInductionVars() { return {getInductionVar()}; }
 
-std::optional<OpFoldResult> ForOp::getSingleLowerBound() {
-  return OpFoldResult(getLowerBound());
+SmallVector<OpFoldResult> ForOp::getMixedLowerBound() {
+  return {OpFoldResult(getLowerBound())};
 }
 
-std::optional<OpFoldResult> ForOp::getSingleStep() {
-  return OpFoldResult(getStep());
+SmallVector<OpFoldResult> ForOp::getMixedStep() {
+  return {OpFoldResult(getStep())};
 }
 
-std::optional<OpFoldResult> ForOp::getSingleUpperBound() {
-  return OpFoldResult(getUpperBound());
+SmallVector<OpFoldResult> ForOp::getMixedUpperBound() {
+  return {OpFoldResult(getUpperBound())};
 }
 
 std::optional<ResultRange> ForOp::getLoopResults() { return getResults(); }
@@ -1428,28 +1426,26 @@ SmallVector<Operation *> ForallOp::getCombiningOps(BlockArgument bbArg) {
   return storeOps;
 }
 
-std::optional<Value> ForallOp::getSingleInductionVar() {
-  if (getRank() != 1)
-    return std::nullopt;
-  return getInductionVar(0);
+ValueRange ForallOp::getInductionVars() {
+  return getBody()->getArguments().take_front(getRank());
 }
 
-std::optional<OpFoldResult> ForallOp::getSingleLowerBound() {
-  if (getRank() != 1)
-    return std::nullopt;
-  return getMixedLowerBound()[0];
+// Get lower bounds as OpFoldResult.
+SmallVector<OpFoldResult> ForallOp::getMixedLowerBound() {
+  Builder b(getOperation()->getContext());
+  return getMixedValues(getStaticLowerBound(), getDynamicLowerBound(), b);
 }
 
-std::optional<OpFoldResult> ForallOp::getSingleUpperBound() {
-  if (getRank() != 1)
-    return std::nullopt;
-  return getMixedUpperBound()[0];
+// Get upper bounds as OpFoldResult.
+SmallVector<OpFoldResult> ForallOp::getMixedUpperBound() {
+  Builder b(getOperation()->getContext());
+  return getMixedValues(getStaticUpperBound(), getDynamicUpperBound(), b);
 }
 
-std::optional<OpFoldResult> ForallOp::getSingleStep() {
-  if (getRank() != 1)
-    return std::nullopt;
-  return getMixedStep()[0];
+// Get steps as OpFoldResult.
+SmallVector<OpFoldResult> ForallOp::getMixedStep() {
+  Builder b(getOperation()->getContext());
+  return getMixedValues(getStaticStep(), getDynamicStep(), b);
 }
 
 ForallOp mlir::scf::getForallOpThreadIndexOwner(Value val) {
@@ -3008,29 +3004,17 @@ void ParallelOp::print(OpAsmPrinter &p) {
 
 SmallVector<Region *> ParallelOp::getLoopRegions() { return {&getRegion()}; }
 
-std::optional<Value> ParallelOp::getSingleInductionVar() {
-  if (getNumLoops() != 1)
-    return std::nullopt;
-  return getBody()->getArgument(0);
-}
+ValueRange ParallelOp::getInductionVars() { return getBody()->getArguments(); }
 
-std::optional<OpFoldResult> ParallelOp::getSingleLowerBound() {
-  if (getNumLoops() != 1)
-    return std::nullopt;
-  return getLowerBound()[0];
+SmallVector<OpFoldResult> ParallelOp::getMixedLowerBound() {
+  return getLowerBound();
 }
 
-std::optional<OpFoldResult> ParallelOp::getSingleUpperBound() {
-  if (getNumLoops() != 1)
-    return std::nullopt;
-  return getUpperBound()[0];
+SmallVector<OpFoldResult> ParallelOp::getMixedUpperBound() {
+  return getUpperBound();
 }
 
-std::optional<OpFoldResult> ParallelOp::getSingleStep() {
-  if (getNumLoops() != 1)
-    return std::nullopt;
-  return getStep()[0];
-}
+SmallVector<OpFoldResult> ParallelOp::getMixedStep() { return getStep(); }
 
 ParallelOp mlir::scf::getParallelForInductionVarOwner(Value val) {
   auto ivArg = llvm::dyn_cast<BlockArgument>(val);
diff --git a/mlir/unittests/Dialect/SCF/LoopLikeSCFOpsTest.cpp b/mlir/unittests/Dialect/SCF/LoopLikeSCFOpsTest.cpp
index 6bc0fd6113b9b..d8cdb213070da 100644
--- a/mlir/unittests/Dialect/SCF/LoopLikeSCFOpsTest.cpp
+++ b/mlir/unittests/Dialect/SCF/LoopLikeSCFOpsTest.cpp
@@ -36,6 +36,10 @@ class SCFLoopLikeTest : public ::testing::Test {
     std::optional<OpFoldResult> maybeIndVar =
         loopLikeOp.getSingleInductionVar();
     EXPECT_TRUE(maybeIndVar.has_value());
+    EXPECT_EQ(loopLikeOp.getInductionVars().size(), 1u);
+    EXPECT_EQ(loopLikeOp.getMixedLowerBound().size(), 1u);
+    EXPECT_EQ(loopLikeOp.getMixedStep().size(), 1u);
+    EXPECT_EQ(loopLikeOp.getMixedLowerBound().size(), 1u);
   }
 
   void checkMultidimensional(LoopLikeOpInterface loopLikeOp) {
@@ -48,6 +52,10 @@ class SCFLoopLikeTest : public ::testing::Test {
     std::optional<OpFoldResult> maybeIndVar =
         loopLikeOp.getSingleInductionVar();
     EXPECT_FALSE(maybeIndVar.has_value());
+    EXPECT_EQ(loopLikeOp.getInductionVars().size(), 2u);
+    EXPECT_EQ(loopLikeOp.getMixedLowerBound().size(), 2u);
+    EXPECT_EQ(loopLikeOp.getMixedStep().size(), 2u);
+    EXPECT_EQ(loopLikeOp.getMixedLowerBound().size(), 2u);
   }
 
   MLIRContext context;

>From 7d995815064cb25e47ec8e400de3692fbe5fdfba Mon Sep 17 00:00:00 2001
From: Sam <srcarroll314 at gmail.com>
Date: Wed, 5 Jun 2024 14:37:57 -0500
Subject: [PATCH 2/3] address review comment

---
 .../mlir/Interfaces/LoopLikeInterface.td      | 20 +++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/mlir/include/mlir/Interfaces/LoopLikeInterface.td b/mlir/include/mlir/Interfaces/LoopLikeInterface.td
index 813779c852027..5cf3eba0bd9ed 100644
--- a/mlir/include/mlir/Interfaces/LoopLikeInterface.td
+++ b/mlir/include/mlir/Interfaces/LoopLikeInterface.td
@@ -234,29 +234,33 @@ def LoopLikeOpInterface : OpInterface<"LoopLikeOpInterface"> {
     /// If there is a single induction variable return it, otherwise return
     /// std::nullopt.
     ::std::optional<::mlir::Value> getSingleInductionVar() {
-      if (this->getInductionVars().size() == 1)
-          return this->getInductionVars()[0];
+      auto inductionVars = this->getInductionVars();
+      if (inductionVars.size() == 1)
+          return inductionVars[0];
         return std::nullopt;
     }
     /// Return the single lower bound value or attribute if it exists, otherwise
     /// return std::nullopt.
     ::std::optional<::mlir::OpFoldResult> getSingleLowerBound() {
-      if (this->getMixedLowerBound().size() == 1)
-          return this->getMixedLowerBound()[0];
+      auto lowerBounds = this->getMixedLowerBound();
+      if (lowerBounds.size() == 1)
+          return lowerBounds[0];
         return std::nullopt;
     }
     /// Return the single step value or attribute if it exists, otherwise
     /// return std::nullopt.
     ::std::optional<::mlir::OpFoldResult> getSingleStep() {
-      if (this->getMixedStep().size() == 1)
-          return this->getMixedStep()[0];
+      auto steps = this->getMixedStep(); 
+      if (steps.size() == 1)
+          return steps[0];
         return std::nullopt;
     }
     /// Return the single upper bound value or attribute if it exists, otherwise
     /// return std::nullopt.
     ::std::optional<::mlir::OpFoldResult> getSingleUpperBound() {
-      if (this->getMixedUpperBound().size() == 1)
-          return this->getMixedUpperBound()[0];
+      auto upperBounds = this->getMixedUpperBound();
+      if (upperBounds.size() == 1)
+          return upperBounds[0];
         return std::nullopt;
     }
 

>From a5fa3b3c4903c344847ee544cd9812b6f0c70571 Mon Sep 17 00:00:00 2001
From: Sam <srcarroll314 at gmail.com>
Date: Wed, 5 Jun 2024 20:56:02 -0500
Subject: [PATCH 3/3] Make return types optional and change names

---
 .../mlir/Dialect/Affine/IR/AffineOps.td       | 10 +--
 mlir/include/mlir/Dialect/SCF/IR/SCFOps.td    | 29 +++++++--
 .../mlir/Interfaces/LoopLikeInterface.td      | 42 ++++++-------
 .../AffineToStandard/AffineToStandard.cpp     |  4 +-
 .../SCFToControlFlow/SCFToControlFlow.cpp     |  9 +--
 mlir/lib/Dialect/Affine/IR/AffineOps.cpp      | 27 ++++----
 mlir/lib/Dialect/Affine/Utils/Utils.cpp       |  2 +-
 mlir/lib/Dialect/SCF/IR/SCF.cpp               | 26 ++++----
 .../Dialect/SCF/Transforms/ForallToFor.cpp    |  9 +--
 .../Dialect/SCF/LoopLikeSCFOpsTest.cpp        | 62 +++++++++++++------
 10 files changed, 131 insertions(+), 89 deletions(-)

diff --git a/mlir/include/mlir/Dialect/Affine/IR/AffineOps.td b/mlir/include/mlir/Dialect/Affine/IR/AffineOps.td
index bb2c29b5733b8..4c032e66f7a83 100644
--- a/mlir/include/mlir/Dialect/Affine/IR/AffineOps.td
+++ b/mlir/include/mlir/Dialect/Affine/IR/AffineOps.td
@@ -118,8 +118,8 @@ def AffineForOp : Affine_Op<"for",
     [AttrSizedOperandSegments, AutomaticAllocationScope,
      ImplicitAffineTerminator, ConditionallySpeculatable,
      RecursiveMemoryEffects, DeclareOpInterfaceMethods<LoopLikeOpInterface,
-     ["getInductionVars", "getMixedLowerBound", "getMixedStep",
-      "getMixedUpperBound", "getYieldedValuesMutable",
+     ["getInductionVars", "getLowerBounds", "getSteps",
+      "getUpperBounds", "getYieldedValuesMutable",
       "replaceWithAdditionalYields"]>,
      DeclareOpInterfaceMethods<RegionBranchOpInterface,
      ["getEntrySuccessorOperands"]>]> {
@@ -671,7 +671,7 @@ def AffineParallelOp : Affine_Op<"parallel",
      I32ElementsAttr:$lowerBoundsGroups,
      AffineMapAttr:$upperBoundsMap,
      I32ElementsAttr:$upperBoundsGroups,
-     I64SmallVectorArrayAttr:$steps,
+     I64SmallVectorArrayAttr:$step,
      Variadic<Index>:$mapOperands);
   let results = (outs Variadic<AnyType>:$results);
   let regions = (region SizedRegion<1>:$region);
@@ -682,7 +682,7 @@ def AffineParallelOp : Affine_Op<"parallel",
     OpBuilder<(ins "TypeRange":$resultTypes,
       "ArrayRef<arith::AtomicRMWKind>":$reductions, "ArrayRef<AffineMap>":$lbMaps,
       "ValueRange":$lbArgs, "ArrayRef<AffineMap>":$ubMaps, "ValueRange":$ubArgs,
-      "ArrayRef<int64_t>":$steps)>
+      "ArrayRef<int64_t>":$step)>
   ];
 
   let extraClassDeclaration = [{
@@ -727,7 +727,7 @@ def AffineParallelOp : Affine_Op<"parallel",
     static StringRef getUpperBoundsGroupsAttrStrName() {
       return "upperBoundsGroups";
     }
-    static StringRef getStepsAttrStrName() { return "steps"; }
+    static StringRef getStepsAttrStrName() { return "step"; }
 
     /// Returns `true` if the loop bounds have min/max expressions.
     bool hasMinMaxBounds() {
diff --git a/mlir/include/mlir/Dialect/SCF/IR/SCFOps.td b/mlir/include/mlir/Dialect/SCF/IR/SCFOps.td
index 3b28ca8b21d0f..66b478f141b32 100644
--- a/mlir/include/mlir/Dialect/SCF/IR/SCFOps.td
+++ b/mlir/include/mlir/Dialect/SCF/IR/SCFOps.td
@@ -136,8 +136,8 @@ def ExecuteRegionOp : SCF_Op<"execute_region", [
 def ForOp : SCF_Op<"for",
       [AutomaticAllocationScope, DeclareOpInterfaceMethods<LoopLikeOpInterface,
        ["getInitsMutable", "getLoopResults", "getRegionIterArgs",
-        "getInductionVars", "getMixedLowerBound", "getMixedStep",
-        "getMixedUpperBound", "getYieldedValuesMutable",
+        "getInductionVars", "getLowerBounds", "getSteps",
+        "getUpperBounds", "getYieldedValuesMutable",
         "promoteIfSingleIteration", "replaceWithAdditionalYields",
         "yieldTiledValuesAndReplace"]>,
        AllTypesMatch<["lowerBound", "upperBound", "step"]>,
@@ -302,7 +302,7 @@ def ForallOp : SCF_Op<"forall", [
        AutomaticAllocationScope,
        DeclareOpInterfaceMethods<LoopLikeOpInterface,
           ["getInitsMutable", "getRegionIterArgs", "getInductionVars", 
-           "getMixedLowerBound", "getMixedUpperBound", "getMixedStep",
+           "getLowerBounds", "getUpperBounds", "getSteps",
            "promoteIfSingleIteration", "yieldTiledValuesAndReplace"]>,
        RecursiveMemoryEffects,
        SingleBlockImplicitTerminator<"scf::InParallelOp">,
@@ -510,6 +510,27 @@ def ForallOp : SCF_Op<"forall", [
   ];
 
   let extraClassDeclaration = [{
+    // Get lower bounds as OpFoldResult.
+    SmallVector<OpFoldResult> getMixedLowerBound() {
+      auto maybeLowerBounds = getLowerBounds();
+      assert(maybeLowerBounds.has_value() && "expected values");
+      return *maybeLowerBounds;
+    }
+
+    // Get upper bounds as OpFoldResult.
+    SmallVector<OpFoldResult> getMixedUpperBound() {
+      auto maybeUpperBounds = getUpperBounds();
+      assert(maybeUpperBounds.has_value() && "expected values");
+      return *maybeUpperBounds;
+    }
+
+    // Get steps as OpFoldResult.
+    SmallVector<OpFoldResult> getMixedStep() {
+      auto maybeSteps = getSteps();
+      assert(maybeSteps.has_value() && "expected values");
+      return *maybeSteps;
+    }
+
     /// Get lower bounds as values.
     SmallVector<Value> getLowerBound(OpBuilder &b) {
       return getValueOrCreateConstantIndexOp(b, getLoc(), getMixedLowerBound());
@@ -744,7 +765,7 @@ def ParallelOp : SCF_Op<"parallel",
     [AutomaticAllocationScope,
      AttrSizedOperandSegments,
      DeclareOpInterfaceMethods<LoopLikeOpInterface, ["getInductionVars",
-          "getMixedLowerBound", "getMixedUpperBound", "getMixedStep"]>,
+          "getLowerBounds", "getUpperBounds", "getSteps"]>,
      RecursiveMemoryEffects,
      DeclareOpInterfaceMethods<RegionBranchOpInterface>,
      SingleBlockImplicitTerminator<"scf::ReduceOp">,
diff --git a/mlir/include/mlir/Interfaces/LoopLikeInterface.td b/mlir/include/mlir/Interfaces/LoopLikeInterface.td
index 5cf3eba0bd9ed..cc79d026c8d4e 100644
--- a/mlir/include/mlir/Interfaces/LoopLikeInterface.td
+++ b/mlir/include/mlir/Interfaces/LoopLikeInterface.td
@@ -106,34 +106,34 @@ def LoopLikeOpInterface : OpInterface<"LoopLikeOpInterface"> {
     InterfaceMethod<[{
         Return all lower bounds.
       }],
-      /*retTy=*/"::llvm::SmallVector<::mlir::OpFoldResult>",
-      /*methodName=*/"getMixedLowerBound",
+      /*retTy=*/"::std::optional<::llvm::SmallVector<::mlir::OpFoldResult>>",
+      /*methodName=*/"getLowerBounds",
       /*args=*/(ins),
       /*methodBody=*/"",
       /*defaultImplementation=*/[{
-        return {};
+        return std::nullopt;
       }]
     >,
     InterfaceMethod<[{
         Return all steps.
       }],
-      /*retTy=*/"::llvm::SmallVector<::mlir::OpFoldResult>",
-      /*methodName=*/"getMixedStep",
+      /*retTy=*/"std::optional<::llvm::SmallVector<::mlir::OpFoldResult>>",
+      /*methodName=*/"getSteps",
       /*args=*/(ins),
       /*methodBody=*/"",
       /*defaultImplementation=*/[{
-        return {};
+        return std::nullopt;
       }]
     >,
     InterfaceMethod<[{
         Return all upper bounds.
       }],
-      /*retTy=*/"::llvm::SmallVector<::mlir::OpFoldResult>",
-      /*methodName=*/"getMixedUpperBound",
+      /*retTy=*/"::std::optional<::llvm::SmallVector<::mlir::OpFoldResult>>",
+      /*methodName=*/"getUpperBounds",
       /*args=*/(ins),
       /*methodBody=*/"",
       /*defaultImplementation=*/[{
-        return {};
+        return std::nullopt;
       }]
     >,
     InterfaceMethod<[{
@@ -242,26 +242,26 @@ def LoopLikeOpInterface : OpInterface<"LoopLikeOpInterface"> {
     /// Return the single lower bound value or attribute if it exists, otherwise
     /// return std::nullopt.
     ::std::optional<::mlir::OpFoldResult> getSingleLowerBound() {
-      auto lowerBounds = this->getMixedLowerBound();
-      if (lowerBounds.size() == 1)
-          return lowerBounds[0];
-        return std::nullopt;
+      auto lowerBounds = this->getLowerBounds();
+      if (lowerBounds.has_value() && (*lowerBounds).size() == 1)
+          return (*lowerBounds)[0];
+      return std::nullopt;
     }
     /// Return the single step value or attribute if it exists, otherwise
     /// return std::nullopt.
     ::std::optional<::mlir::OpFoldResult> getSingleStep() {
-      auto steps = this->getMixedStep(); 
-      if (steps.size() == 1)
-          return steps[0];
-        return std::nullopt;
+      auto steps = this->getSteps(); 
+      if (steps.has_value() && (*steps).size() == 1)
+          return (*steps)[0];
+      return std::nullopt;
     }
     /// Return the single upper bound value or attribute if it exists, otherwise
     /// return std::nullopt.
     ::std::optional<::mlir::OpFoldResult> getSingleUpperBound() {
-      auto upperBounds = this->getMixedUpperBound();
-      if (upperBounds.size() == 1)
-          return upperBounds[0];
-        return std::nullopt;
+      auto upperBounds = this->getUpperBounds();
+      if (upperBounds.has_value() && (*upperBounds).size() == 1)
+          return (*upperBounds)[0];
+      return std::nullopt;
     }
 
     /// Append the specified additional "init" operands: replace this loop with
diff --git a/mlir/lib/Conversion/AffineToStandard/AffineToStandard.cpp b/mlir/lib/Conversion/AffineToStandard/AffineToStandard.cpp
index 10ccd5c97783b..20487b32e3fe0 100644
--- a/mlir/lib/Conversion/AffineToStandard/AffineToStandard.cpp
+++ b/mlir/lib/Conversion/AffineToStandard/AffineToStandard.cpp
@@ -196,8 +196,8 @@ class AffineParallelLowering : public OpRewritePattern<AffineParallelOp> {
         return rewriter.notifyMatchFailure(op, "couldn't convert upper bounds");
       upperBoundTuple.push_back(upper);
     }
-    steps.reserve(op.getSteps().size());
-    for (int64_t step : op.getSteps())
+    steps.reserve(op.getStep().size());
+    for (int64_t step : op.getStep())
       steps.push_back(rewriter.create<arith::ConstantIndexOp>(loc, step));
 
     // Get the terminator op.
diff --git a/mlir/lib/Conversion/SCFToControlFlow/SCFToControlFlow.cpp b/mlir/lib/Conversion/SCFToControlFlow/SCFToControlFlow.cpp
index 9eb8a289d7d65..48e1d88c1c75e 100644
--- a/mlir/lib/Conversion/SCFToControlFlow/SCFToControlFlow.cpp
+++ b/mlir/lib/Conversion/SCFToControlFlow/SCFToControlFlow.cpp
@@ -695,12 +695,9 @@ LogicalResult ForallLowering::matchAndRewrite(ForallOp forallOp,
         "only fully bufferized scf.forall ops can be lowered to scf.parallel");
 
   // Convert mixed bounds and steps to SSA values.
-  SmallVector<Value> lbs = getValueOrCreateConstantIndexOp(
-      rewriter, loc, forallOp.getMixedLowerBound());
-  SmallVector<Value> ubs = getValueOrCreateConstantIndexOp(
-      rewriter, loc, forallOp.getMixedUpperBound());
-  SmallVector<Value> steps =
-      getValueOrCreateConstantIndexOp(rewriter, loc, forallOp.getMixedStep());
+  SmallVector<Value> lbs = forallOp.getLowerBound(rewriter);
+  SmallVector<Value> ubs = forallOp.getUpperBound(rewriter);
+  SmallVector<Value> steps = forallOp.getStep(rewriter);
 
   // Create empty scf.parallel op.
   auto parallelOp = rewriter.create<ParallelOp>(loc, lbs, ubs, steps);
diff --git a/mlir/lib/Dialect/Affine/IR/AffineOps.cpp b/mlir/lib/Dialect/Affine/IR/AffineOps.cpp
index 746a9c919560c..d3f034a0660ba 100644
--- a/mlir/lib/Dialect/Affine/IR/AffineOps.cpp
+++ b/mlir/lib/Dialect/Affine/IR/AffineOps.cpp
@@ -2456,23 +2456,26 @@ SmallVector<Region *> AffineForOp::getLoopRegions() { return {&getRegion()}; }
 
 ValueRange AffineForOp::getInductionVars() { return {getInductionVar()}; }
 
-SmallVector<OpFoldResult> AffineForOp::getMixedLowerBound() {
+std::optional<SmallVector<OpFoldResult>> AffineForOp::getLowerBounds() {
   if (!hasConstantLowerBound())
-    return {};
+    return std::nullopt;
   OpBuilder b(getContext());
-  return {OpFoldResult(b.getI64IntegerAttr(getConstantLowerBound()))};
+  return SmallVector<OpFoldResult>{
+      OpFoldResult(b.getI64IntegerAttr(getConstantLowerBound()))};
 }
 
-SmallVector<OpFoldResult> AffineForOp::getMixedStep() {
+std::optional<SmallVector<OpFoldResult>> AffineForOp::getSteps() {
   OpBuilder b(getContext());
-  return {OpFoldResult(b.getI64IntegerAttr(getStepAsInt()))};
+  return SmallVector<OpFoldResult>{
+      OpFoldResult(b.getI64IntegerAttr(getStepAsInt()))};
 }
 
-SmallVector<OpFoldResult> AffineForOp::getMixedUpperBound() {
+std::optional<SmallVector<OpFoldResult>> AffineForOp::getUpperBounds() {
   if (!hasConstantUpperBound())
     return {};
   OpBuilder b(getContext());
-  return {OpFoldResult(b.getI64IntegerAttr(getConstantUpperBound()))};
+  return SmallVector<OpFoldResult>{
+      OpFoldResult(b.getI64IntegerAttr(getConstantUpperBound()))};
 }
 
 FailureOr<LoopLikeOpInterface> AffineForOp::replaceWithAdditionalYields(
@@ -3753,7 +3756,7 @@ SmallVector<Region *> AffineParallelOp::getLoopRegions() {
   return {&getRegion()};
 }
 
-unsigned AffineParallelOp::getNumDims() { return getSteps().size(); }
+unsigned AffineParallelOp::getNumDims() { return getStep().size(); }
 
 AffineParallelOp::operand_range AffineParallelOp::getLowerBoundsOperands() {
   return getOperands().take_front(getLowerBoundsMap().getNumInputs());
@@ -3838,7 +3841,7 @@ void AffineParallelOp::setUpperBounds(ValueRange ubOperands, AffineMap map) {
 }
 
 void AffineParallelOp::setSteps(ArrayRef<int64_t> newSteps) {
-  setStepsAttr(getBodyBuilder().getI64ArrayAttr(newSteps));
+  setStepAttr(getBodyBuilder().getI64ArrayAttr(newSteps));
 }
 
 // check whether resultType match op or not in affine.parallel
@@ -3888,14 +3891,14 @@ LogicalResult AffineParallelOp::verify() {
   auto numDims = getNumDims();
   if (getLowerBoundsGroups().getNumElements() != numDims ||
       getUpperBoundsGroups().getNumElements() != numDims ||
-      getSteps().size() != numDims || getBody()->getNumArguments() != numDims) {
+      getStep().size() != numDims || getBody()->getNumArguments() != numDims) {
     return emitOpError() << "the number of region arguments ("
                          << getBody()->getNumArguments()
                          << ") and the number of map groups for lower ("
                          << getLowerBoundsGroups().getNumElements()
                          << ") and upper bound ("
                          << getUpperBoundsGroups().getNumElements()
-                         << "), and the number of steps (" << getSteps().size()
+                         << "), and the number of steps (" << getStep().size()
                          << ") must all match";
   }
 
@@ -4013,7 +4016,7 @@ void AffineParallelOp::print(OpAsmPrinter &p) {
   printMinMaxBound(p, getUpperBoundsMapAttr(), getUpperBoundsGroupsAttr(),
                    getUpperBoundsOperands(), "min");
   p << ')';
-  SmallVector<int64_t, 8> steps = getSteps();
+  SmallVector<int64_t, 8> steps = getStep();
   bool elideSteps = llvm::all_of(steps, [](int64_t step) { return step == 1; });
   if (!elideSteps) {
     p << " step (";
diff --git a/mlir/lib/Dialect/Affine/Utils/Utils.cpp b/mlir/lib/Dialect/Affine/Utils/Utils.cpp
index f46381403bc52..a652ee4a488d1 100644
--- a/mlir/lib/Dialect/Affine/Utils/Utils.cpp
+++ b/mlir/lib/Dialect/Affine/Utils/Utils.cpp
@@ -494,7 +494,7 @@ void mlir::affine::normalizeAffineParallel(AffineParallelOp op) {
     return;
 
   AffineMap lbMap = op.getLowerBoundsMap();
-  SmallVector<int64_t, 8> steps = op.getSteps();
+  SmallVector<int64_t, 8> steps = op.getStep();
   // No need to do any work if the parallel op is already normalized.
   bool isAlreadyNormalized =
       llvm::all_of(llvm::zip(steps, lbMap.getResults()), [](auto tuple) {
diff --git a/mlir/lib/Dialect/SCF/IR/SCF.cpp b/mlir/lib/Dialect/SCF/IR/SCF.cpp
index e275ff1849c10..281d73afee4a8 100644
--- a/mlir/lib/Dialect/SCF/IR/SCF.cpp
+++ b/mlir/lib/Dialect/SCF/IR/SCF.cpp
@@ -380,16 +380,16 @@ LogicalResult ForOp::verifyRegions() {
 
 ValueRange ForOp::getInductionVars() { return {getInductionVar()}; }
 
-SmallVector<OpFoldResult> ForOp::getMixedLowerBound() {
-  return {OpFoldResult(getLowerBound())};
+std::optional<SmallVector<OpFoldResult>> ForOp::getLowerBounds() {
+  return SmallVector<OpFoldResult, 1>{OpFoldResult(getLowerBound())};
 }
 
-SmallVector<OpFoldResult> ForOp::getMixedStep() {
-  return {OpFoldResult(getStep())};
+std::optional<SmallVector<OpFoldResult>> ForOp::getSteps() {
+  return SmallVector<OpFoldResult, 1>{OpFoldResult(getStep())};
 }
 
-SmallVector<OpFoldResult> ForOp::getMixedUpperBound() {
-  return {OpFoldResult(getUpperBound())};
+std::optional<SmallVector<OpFoldResult>> ForOp::getUpperBounds() {
+  return SmallVector<OpFoldResult, 1>{OpFoldResult(getUpperBound())};
 }
 
 std::optional<ResultRange> ForOp::getLoopResults() { return getResults(); }
@@ -1431,19 +1431,19 @@ ValueRange ForallOp::getInductionVars() {
 }
 
 // Get lower bounds as OpFoldResult.
-SmallVector<OpFoldResult> ForallOp::getMixedLowerBound() {
+std::optional<SmallVector<OpFoldResult>> ForallOp::getLowerBounds() {
   Builder b(getOperation()->getContext());
   return getMixedValues(getStaticLowerBound(), getDynamicLowerBound(), b);
 }
 
 // Get upper bounds as OpFoldResult.
-SmallVector<OpFoldResult> ForallOp::getMixedUpperBound() {
+std::optional<SmallVector<OpFoldResult>> ForallOp::getUpperBounds() {
   Builder b(getOperation()->getContext());
   return getMixedValues(getStaticUpperBound(), getDynamicUpperBound(), b);
 }
 
 // Get steps as OpFoldResult.
-SmallVector<OpFoldResult> ForallOp::getMixedStep() {
+std::optional<SmallVector<OpFoldResult>> ForallOp::getSteps() {
   Builder b(getOperation()->getContext());
   return getMixedValues(getStaticStep(), getDynamicStep(), b);
 }
@@ -3006,15 +3006,17 @@ SmallVector<Region *> ParallelOp::getLoopRegions() { return {&getRegion()}; }
 
 ValueRange ParallelOp::getInductionVars() { return getBody()->getArguments(); }
 
-SmallVector<OpFoldResult> ParallelOp::getMixedLowerBound() {
+std::optional<SmallVector<OpFoldResult>> ParallelOp::getLowerBounds() {
   return getLowerBound();
 }
 
-SmallVector<OpFoldResult> ParallelOp::getMixedUpperBound() {
+std::optional<SmallVector<OpFoldResult>> ParallelOp::getUpperBounds() {
   return getUpperBound();
 }
 
-SmallVector<OpFoldResult> ParallelOp::getMixedStep() { return getStep(); }
+std::optional<SmallVector<OpFoldResult>> ParallelOp::getSteps() {
+  return getStep();
+}
 
 ParallelOp mlir::scf::getParallelForInductionVarOwner(Value val) {
   auto ivArg = llvm::dyn_cast<BlockArgument>(val);
diff --git a/mlir/lib/Dialect/SCF/Transforms/ForallToFor.cpp b/mlir/lib/Dialect/SCF/Transforms/ForallToFor.cpp
index 198cb2e6cc69e..5da1b76e929be 100644
--- a/mlir/lib/Dialect/SCF/Transforms/ForallToFor.cpp
+++ b/mlir/lib/Dialect/SCF/Transforms/ForallToFor.cpp
@@ -34,12 +34,9 @@ mlir::scf::forallToForLoop(RewriterBase &rewriter, scf::ForallOp forallOp,
   rewriter.setInsertionPoint(forallOp);
 
   Location loc = forallOp.getLoc();
-  SmallVector<Value> lbs = getValueOrCreateConstantIndexOp(
-      rewriter, loc, forallOp.getMixedLowerBound());
-  SmallVector<Value> ubs = getValueOrCreateConstantIndexOp(
-      rewriter, loc, forallOp.getMixedUpperBound());
-  SmallVector<Value> steps =
-      getValueOrCreateConstantIndexOp(rewriter, loc, forallOp.getMixedStep());
+  SmallVector<Value> lbs = forallOp.getLowerBound(rewriter);
+  SmallVector<Value> ubs = forallOp.getUpperBound(rewriter);
+  SmallVector<Value> steps = forallOp.getStep(rewriter);
   LoopNest loopNest = scf::buildLoopNest(rewriter, loc, lbs, ubs, steps);
 
   SmallVector<Value> ivs = llvm::map_to_vector(
diff --git a/mlir/unittests/Dialect/SCF/LoopLikeSCFOpsTest.cpp b/mlir/unittests/Dialect/SCF/LoopLikeSCFOpsTest.cpp
index d8cdb213070da..07504a99fecd3 100644
--- a/mlir/unittests/Dialect/SCF/LoopLikeSCFOpsTest.cpp
+++ b/mlir/unittests/Dialect/SCF/LoopLikeSCFOpsTest.cpp
@@ -27,35 +27,57 @@ class SCFLoopLikeTest : public ::testing::Test {
   }
 
   void checkUnidimensional(LoopLikeOpInterface loopLikeOp) {
-    std::optional<OpFoldResult> maybeLb = loopLikeOp.getSingleLowerBound();
+    std::optional<OpFoldResult> maybeSingleLb =
+        loopLikeOp.getSingleLowerBound();
+    EXPECT_TRUE(maybeSingleLb.has_value());
+    std::optional<OpFoldResult> maybeSingleUb =
+        loopLikeOp.getSingleUpperBound();
+    EXPECT_TRUE(maybeSingleUb.has_value());
+    std::optional<OpFoldResult> maybeSingleStep = loopLikeOp.getSingleStep();
+    EXPECT_TRUE(maybeSingleStep.has_value());
+    std::optional<OpFoldResult> maybeSingleIndVar =
+        loopLikeOp.getSingleInductionVar();
+    EXPECT_TRUE(maybeSingleIndVar.has_value());
+
+    std::optional<SmallVector<OpFoldResult>> maybeLb =
+        loopLikeOp.getLowerBounds();
     EXPECT_TRUE(maybeLb.has_value());
-    std::optional<OpFoldResult> maybeUb = loopLikeOp.getSingleUpperBound();
+    EXPECT_EQ((*maybeLb).size(), 1u);
+    std::optional<SmallVector<OpFoldResult>> maybeUb =
+        loopLikeOp.getUpperBounds();
     EXPECT_TRUE(maybeUb.has_value());
-    std::optional<OpFoldResult> maybeStep = loopLikeOp.getSingleStep();
+    EXPECT_EQ((*maybeUb).size(), 1u);
+    std::optional<SmallVector<OpFoldResult>> maybeStep = loopLikeOp.getSteps();
     EXPECT_TRUE(maybeStep.has_value());
-    std::optional<OpFoldResult> maybeIndVar =
-        loopLikeOp.getSingleInductionVar();
-    EXPECT_TRUE(maybeIndVar.has_value());
+    EXPECT_EQ((*maybeStep).size(), 1u);
     EXPECT_EQ(loopLikeOp.getInductionVars().size(), 1u);
-    EXPECT_EQ(loopLikeOp.getMixedLowerBound().size(), 1u);
-    EXPECT_EQ(loopLikeOp.getMixedStep().size(), 1u);
-    EXPECT_EQ(loopLikeOp.getMixedLowerBound().size(), 1u);
   }
 
   void checkMultidimensional(LoopLikeOpInterface loopLikeOp) {
-    std::optional<OpFoldResult> maybeLb = loopLikeOp.getSingleLowerBound();
-    EXPECT_FALSE(maybeLb.has_value());
-    std::optional<OpFoldResult> maybeUb = loopLikeOp.getSingleUpperBound();
-    EXPECT_FALSE(maybeUb.has_value());
-    std::optional<OpFoldResult> maybeStep = loopLikeOp.getSingleStep();
-    EXPECT_FALSE(maybeStep.has_value());
-    std::optional<OpFoldResult> maybeIndVar =
+    std::optional<OpFoldResult> maybeSingleLb =
+        loopLikeOp.getSingleLowerBound();
+    EXPECT_FALSE(maybeSingleLb.has_value());
+    std::optional<OpFoldResult> maybeSingleUb =
+        loopLikeOp.getSingleUpperBound();
+    EXPECT_FALSE(maybeSingleUb.has_value());
+    std::optional<OpFoldResult> maybeSingleStep = loopLikeOp.getSingleStep();
+    EXPECT_FALSE(maybeSingleStep.has_value());
+    std::optional<OpFoldResult> maybeSingleIndVar =
         loopLikeOp.getSingleInductionVar();
-    EXPECT_FALSE(maybeIndVar.has_value());
+    EXPECT_FALSE(maybeSingleIndVar.has_value());
+
+    std::optional<SmallVector<OpFoldResult>> maybeLb =
+        loopLikeOp.getLowerBounds();
+    EXPECT_TRUE(maybeLb.has_value());
+    EXPECT_EQ((*maybeLb).size(), 2u);
+    std::optional<SmallVector<OpFoldResult>> maybeUb =
+        loopLikeOp.getUpperBounds();
+    EXPECT_TRUE(maybeUb.has_value());
+    EXPECT_EQ((*maybeUb).size(), 2u);
+    std::optional<SmallVector<OpFoldResult>> maybeStep = loopLikeOp.getSteps();
+    EXPECT_TRUE(maybeStep.has_value());
+    EXPECT_EQ((*maybeStep).size(), 2u);
     EXPECT_EQ(loopLikeOp.getInductionVars().size(), 2u);
-    EXPECT_EQ(loopLikeOp.getMixedLowerBound().size(), 2u);
-    EXPECT_EQ(loopLikeOp.getMixedStep().size(), 2u);
-    EXPECT_EQ(loopLikeOp.getMixedLowerBound().size(), 2u);
   }
 
   MLIRContext context;



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