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+/*
+ Copyright (c) 2012 Tampere University of Technology.
+ Copyright (c) 2013-2014, Texas Instruments Incorporated - http://www.ti.com/
+
+ Permission is hereby granted, free of charge, to any person obtaining a
+ copy of this software and associated documentation files (the "Software"),
+ to deal in the Software without restriction, including without limitation
+ the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ and/or sell copies of the Software, and to permit persons to whom the
+ Software is furnished to do so, subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ DEALINGS IN THE SOFTWARE.
+ */
+/**
+ * @file WorkItemAliasAnalysis.cc
+ *
+ * Definition of WorkItemAliasAnalysis class.
+ *
+ * @author VladimĂ­r Guzma 2012
+ */
+
+#include "config.h"
+#include <iostream>
+
+#include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/Passes.h"
+#include "llvm/Pass.h"
+#if (defined LLVM_3_1 or defined LLVM_3_2)
+#include "llvm/Metadata.h"
+#include "llvm/Constants.h"
+#else
+#include "llvm/IR/Metadata.h"
+#include "llvm/IR/Constants.h"
+#endif
+
+using namespace llvm;
+
+namespace pocl {
+/// WorkItemAliasAnalysis - This is a simple alias analysis
+/// implementation that uses pocl metadata to make sure memory accesses from
+/// different work items are not aliasing.
+class WorkItemAliasAnalysis : public llvm::ImmutablePass, public llvm::AliasAnalysis {
+public:
+ static char ID;
+ WorkItemAliasAnalysis() : ImmutablePass(ID) {}
+
+ /// getAdjustedAnalysisPointer - This method is used when a pass implements
+ /// an analysis interface through multiple inheritance. If needed, it
+ /// should override this to adjust the this pointer as needed for the
+ /// specified pass info.
+ virtual void *getAdjustedAnalysisPointer(AnalysisID PI) {
+ if (PI == &AliasAnalysis::ID)
+ return (AliasAnalysis*)this;
+ return this;
+ }
+ virtual void initializePass() {
+ InitializeAliasAnalysis(this);
+ }
+
+ private:
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const;
+ virtual AliasResult alias(const Location &LocA, const Location &LocB);
+
+ };
+}
+