[mlir] Use llvm::append_range (NFC)

[kazutakahirata]

This patch replaces:

llvm::copy(Src, std::back_inserter(Dst));

with:

llvm::append_range(Dst, Src);

for breavity.

One side benefit is that llvm::append_range eventually calls
llvm::SmallVector::reserve if Dst is of llvm::SmallVector.

[llvmbot]

@llvm/pr-subscribers-mlir-scf
@llvm/pr-subscribers-mlir-emitc

@llvm/pr-subscribers-mlir

Author: Kazu Hirata (kazutakahirata)

Changes

This patch replaces:

llvm::copy(Src, std::back_inserter(Dst));

with:

llvm::append_range(Dst, Src);

for breavity.

One side benefit is that llvm::append_range eventually calls
llvm::SmallVector::reserve if Dst is of llvm::SmallVector.

---

Full diff: https://github.com/llvm/llvm-project/pull/136257.diff

3 Files Affected:

• (modified) mlir/lib/Dialect/EmitC/IR/EmitC.cpp (+2-2)
• (modified) mlir/lib/Dialect/SCF/IR/SCF.cpp (+3-3)
• (modified) mlir/lib/Dialect/Traits.cpp (+2-2)

diff --git a/mlir/lib/Dialect/EmitC/IR/EmitC.cpp b/mlir/lib/Dialect/EmitC/IR/EmitC.cpp
index b4d7482554fbc..14cd8e4920259 100644
--- a/mlir/lib/Dialect/EmitC/IR/EmitC.cpp
+++ b/mlir/lib/Dialect/EmitC/IR/EmitC.cpp
@@ -1337,7 +1337,7 @@ Block &emitc::SwitchOp::getCaseBlock(unsigned idx) {
 
 void SwitchOp::getSuccessorRegions(
     RegionBranchPoint point, SmallVectorImpl<RegionSuccessor> &successors) {
-  llvm::copy(getRegions(), std::back_inserter(successors));
+  llvm::append_range(successors, getRegions());
 }
 
 void SwitchOp::getEntrySuccessorRegions(
@@ -1348,7 +1348,7 @@ void SwitchOp::getEntrySuccessorRegions(
   // If a constant was not provided, all regions are possible successors.
   auto arg = dyn_cast_or_null<IntegerAttr>(adaptor.getArg());
   if (!arg) {
-    llvm::copy(getRegions(), std::back_inserter(successors));
+    llvm::append_range(successors, getRegions());
     return;
   }
 
diff --git a/mlir/lib/Dialect/SCF/IR/SCF.cpp b/mlir/lib/Dialect/SCF/IR/SCF.cpp
index c454f342b4204..ad65a5fdfe4dc 100644
--- a/mlir/lib/Dialect/SCF/IR/SCF.cpp
+++ b/mlir/lib/Dialect/SCF/IR/SCF.cpp
@@ -758,7 +758,7 @@ LoopNest mlir::scf::buildLoopNest(
 
   // Return the loops.
   ValueVector nestResults;
-  llvm::copy(loops.front().getResults(), std::back_inserter(nestResults));
+  llvm::append_range(nestResults, loops.front().getResults());
   return LoopNest{std::move(loops), std::move(nestResults)};
 }
 
@@ -4281,7 +4281,7 @@ void IndexSwitchOp::getSuccessorRegions(
     return;
   }
 
-  llvm::copy(getRegions(), std::back_inserter(successors));
+  llvm::append_range(successors, getRegions());
 }
 
 void IndexSwitchOp::getEntrySuccessorRegions(
@@ -4292,7 +4292,7 @@ void IndexSwitchOp::getEntrySuccessorRegions(
   // If a constant was not provided, all regions are possible successors.
   auto arg = dyn_cast_or_null<IntegerAttr>(adaptor.getArg());
   if (!arg) {
-    llvm::copy(getRegions(), std::back_inserter(successors));
+    llvm::append_range(successors, getRegions());
     return;
   }
 
diff --git a/mlir/lib/Dialect/Traits.cpp b/mlir/lib/Dialect/Traits.cpp
index 6e62a33037eb8..2d43a1e52a0b1 100644
--- a/mlir/lib/Dialect/Traits.cpp
+++ b/mlir/lib/Dialect/Traits.cpp
@@ -70,9 +70,9 @@ bool OpTrait::util::getBroadcastedShape(ArrayRef<int64_t> shape1,
 
   resultShape.clear();
   if (shape1.size() > shape2.size()) {
-    std::copy(shape1.begin(), shape1.end(), std::back_inserter(resultShape));
+    llvm::append_range(resultShape, shape1);
   } else {
-    std::copy(shape2.begin(), shape2.end(), std::back_inserter(resultShape));
+    llvm::append_range(resultShape, shape2);
   }
 
   auto i1 = shape1.rbegin(), e1 = shape1.rend();