AArch64: Implement lneg Evaluator

Implemented lneg Evaluator under Unary Evaluator Signed-off-by: marufunb <mrahma15@unb.ca>
eclipse · Jan 17, 2019 · 6ed4e65 · 6ed4e65
1 parent 232007f
commit 6ed4e65
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Showing 2 changed files with 9 additions and 6 deletions.
diff --git a/compiler/aarch64/codegen/TreeEvaluatorTable.hpp b/compiler/aarch64/codegen/TreeEvaluatorTable.hpp
@@ -139,7 +139,7 @@
     TR::TreeEvaluator::unImpOpEvaluator ,        // TODO:ARM64: Enable when Implemented: TR::TreeEvaluator::sremEvaluator ,	// TR::srem		// remainder of 2 short integers          (child1 % child2)
     TR::TreeEvaluator::unImpOpEvaluator ,        // TODO:ARM64: Enable when Implemented: TR::TreeEvaluator::iuremEvaluator ,	// TR::iurem		// remainder of 2 unsigned integers       (child1 % child2)
     TR::TreeEvaluator::inegEvaluator, // TR::ineg		// negate an integer
-    TR::TreeEvaluator::unImpOpEvaluator ,        // TODO:ARM64: Enable when Implemented: TR::TreeEvaluator::lnegEvaluator ,	// TR::lneg		// negate a long integer
+    TR::TreeEvaluator::lnegEvaluator, // TR::lneg		// negate a long integer
     TR::TreeEvaluator::unImpOpEvaluator ,        // TODO:ARM64: Enable when Implemented: TR::TreeEvaluator::fnegEvaluator ,	// TR::fneg		// negate a float
     TR::TreeEvaluator::unImpOpEvaluator ,        // TODO:ARM64: Enable when Implemented: TR::TreeEvaluator::dnegEvaluator ,	// TR::dneg		// negate a double
     TR::TreeEvaluator::unImpOpEvaluator ,        // TODO:ARM64: Enable when Implemented: TR::TreeEvaluator::bnegEvaluator ,	// TR::bneg		// negate a bytes

diff --git a/compiler/aarch64/codegen/UnaryEvaluator.cpp b/compiler/aarch64/codegen/UnaryEvaluator.cpp
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2018, 2018 IBM Corp. and others
+ * Copyright (c) 2018, 2019 IBM Corp. and others
  *
  * This program and the accompanying materials are made available under
  * the terms of the Eclipse Public License 2.0 which accompanies this
@@ -78,10 +78,13 @@ TR::Register *OMR::ARM64::TreeEvaluator::inegEvaluator(TR::Node *node, TR::CodeG
    }
 
 TR::Register *OMR::ARM64::TreeEvaluator::lnegEvaluator(TR::Node *node, TR::CodeGenerator *cg)
-	{
-	// TODO:ARM64: Enable TR::TreeEvaluator::lnegEvaluator in compiler/aarch64/codegen/TreeEvaluatorTable.hpp when Implemented.
-	return OMR::ARM64::TreeEvaluator::unImpOpEvaluator(node, cg);
-	}
+   {
+   TR::Node *firstChild = node->getFirstChild();
+   TR::Register *tempReg = cg->gprClobberEvaluate(firstChild);
+   generateNegInstruction(cg, node, tempReg, tempReg);
+   firstChild->decReferenceCount();
+   return node->setRegister(tempReg);
+   }
 
 static TR::Register *commonIntegerAbsEvaluator(TR::Node *node, TR::CodeGenerator *cg)
    {