From b4b54153ad760c69a00a08531abef4ed434a5092 Mon Sep 17 00:00:00 2001
From: Tony Linthicum <tlinth@codeaurora.org>
Date: Mon, 12 Dec 2011 21:14:40 +0000
Subject: Hexagon backend support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146412 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Hexagon/HexagonSelectionDAGInfo.cpp | 46 ++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 lib/Target/Hexagon/HexagonSelectionDAGInfo.cpp

(limited to 'lib/Target/Hexagon/HexagonSelectionDAGInfo.cpp')

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();
+}
-- 
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