Hexagon backend support
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146412 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Hexagon/HexagonSelectionDAGInfo.cpp b/lib/Target/Hexagon/HexagonSelectionDAGInfo.cpp
new file mode 100644
index 0000000..a52c604
--- /dev/null
+++ b/lib/Target/Hexagon/HexagonSelectionDAGInfo.cpp
@@ -0,0 +1,46 @@
+//===-- HexagonSelectionDAGInfo.cpp - Hexagon SelectionDAG Info -----------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the HexagonSelectionDAGInfo class.
+//
+//===----------------------------------------------------------------------===//
+
+#define DEBUG_TYPE "hexagon-selectiondag-info"
+#include "HexagonTargetMachine.h"
+using namespace llvm;
+
+bool llvm::flag_aligned_memcpy;
+
+HexagonSelectionDAGInfo::HexagonSelectionDAGInfo(const HexagonTargetMachine
+ &TM)
+ : TargetSelectionDAGInfo(TM) {
+}
+
+HexagonSelectionDAGInfo::~HexagonSelectionDAGInfo() {
+}
+
+SDValue
+HexagonSelectionDAGInfo::
+EmitTargetCodeForMemcpy(SelectionDAG &DAG, DebugLoc dl, SDValue Chain,
+ SDValue Dst, SDValue Src, SDValue Size, unsigned Align,
+ bool isVolatile, bool AlwaysInline,
+ MachinePointerInfo DstPtrInfo,
+ MachinePointerInfo SrcPtrInfo) const {
+ flag_aligned_memcpy = false;
+ if ((Align & 0x3) == 0) {
+ ConstantSDNode *ConstantSize = dyn_cast<ConstantSDNode>(Size);
+ if (ConstantSize) {
+ uint64_t SizeVal = ConstantSize->getZExtValue();
+ if ((SizeVal > 32) && ((SizeVal % 8) == 0))
+ flag_aligned_memcpy = true;
+ }
+ }
+
+ return SDValue();
+}