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

[llvmlistbot at llvm.org]

================
@@ -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>",
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MaheshRavishankar wrote:

`optional<SmallVector<OpFoldResult>>` makes sense to me. Should be true for all of the methods added here.

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