[flang] [llvm] [OpenMP][Flang] Fix atomic operations on complex types (PR #165366)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp b/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp
index c49e69ae2..8d2382f88 100644
--- a/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp
+++ b/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp
@@ -4548,16 +4548,16 @@ TEST_F(OpenMPIRBuilderTest, OMPAtomicRWStructType) {
                                           EntryBB->getFirstInsertionPt());
 
   LLVMContext &Ctx = M->getContext();
-  
+
   // Create a struct type {double, double} to simulate complex(8) - 16 bytes
   StructType *Complex8Ty = StructType::create(
       Ctx, {Type::getDoubleTy(Ctx), Type::getDoubleTy(Ctx)}, "complex");
-  
+
   AllocaInst *XVal = Builder.CreateAlloca(Complex8Ty);
   XVal->setName("AtomicVar");
   OpenMPIRBuilder::AtomicOpValue X = {XVal, Complex8Ty, false, false};
   AtomicOrdering AO = AtomicOrdering::SequentiallyConsistent;
-  
+
   // Create value to write: {1.0, 1.0}
   Constant *Real = ConstantFP::get(Type::getDoubleTy(Ctx), 1.0);
   Constant *Imag = ConstantFP::get(Type::getDoubleTy(Ctx), 1.0);
@@ -4572,7 +4572,7 @@ TEST_F(OpenMPIRBuilderTest, OMPAtomicRWStructType) {
   VVal->setName("ReadDest");
   OpenMPIRBuilder::AtomicOpValue V = {VVal, Complex8Ty, false, false};
   Value *ReadResult = nullptr;
-  
+
   Builder.restoreIP(
       OMPBuilder.createAtomicRead(Loc, X, ReadResult, AO, AllocaIP));
 
@@ -4583,7 +4583,7 @@ TEST_F(OpenMPIRBuilderTest, OMPAtomicRWStructType) {
   // Verify that __atomic_store and __atomic_load are called with size 16
   bool FoundAtomicStore = false;
   bool FoundAtomicLoad = false;
-  
+
   for (Function &Fn : *M) {
     if (Fn.getName().starts_with("__atomic_store")) {
       // Check that first call to __atomic_store has size argument = 16
@@ -4610,7 +4610,7 @@ TEST_F(OpenMPIRBuilderTest, OMPAtomicRWStructType) {
       }
     }
   }
-  
+
   EXPECT_TRUE(FoundAtomicStore) << "Did not find __atomic_store call";
   EXPECT_TRUE(FoundAtomicLoad) << "Did not find __atomic_load call";
 }

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https://github.com/llvm/llvm-project/pull/165366