[mlir] Use llvm::less_first (NFC)

[kazutakahirata]

No description provided.

[llvmbot]

@llvm/pr-subscribers-mlir-sparse

@llvm/pr-subscribers-mlir

Author: Kazu Hirata (kazutakahirata)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/136398.diff

1 Files Affected:

• (modified) mlir/lib/Dialect/SparseTensor/Transforms/Utils/LoopEmitter.cpp (+1-2)

diff --git a/mlir/lib/Dialect/SparseTensor/Transforms/Utils/LoopEmitter.cpp b/mlir/lib/Dialect/SparseTensor/Transforms/Utils/LoopEmitter.cpp
index ea5533dfc6bac..6e816dc0661a1 100644
--- a/mlir/lib/Dialect/SparseTensor/Transforms/Utils/LoopEmitter.cpp
+++ b/mlir/lib/Dialect/SparseTensor/Transforms/Utils/LoopEmitter.cpp
@@ -352,8 +352,7 @@ void LoopEmitter::initSubSectIterator(OpBuilder &builder, Location loc) {
     if (depRedOrder.empty())
       continue;
 
-    std::sort(depRedOrder.begin(), depRedOrder.end(),
-              [](auto &l, auto &r) { return std::get<0>(l) < std::get<0>(r); });
+    llvm::sort(depRedOrder, llvm::less_first());
 
     SmallVector<SparseIterator *> lastIter(tensors.size(), nullptr);
     for (auto [loop, t, lvl] : depRedOrder) {