This patch adds a new NVPTX back-end to LLVM which supports code generation for NVIDI...

[oota-llvm.git] / lib / Target / NVPTX / NVPTXAllocaHoisting.h

diff --git a/lib/Target/NVPTX/NVPTXAllocaHoisting.h b/lib/Target/NVPTX/NVPTXAllocaHoisting.h
new file mode 100644 (file)
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+++ b/lib/Target/NVPTX/NVPTXAllocaHoisting.h
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+//===-- AllocaHoisting.h - Hosist allocas to the entry block ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Hoist the alloca instructions in the non-entry blocks to the entry blocks.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef NVPTX_ALLOCA_HOISTING_H_
+#define NVPTX_ALLOCA_HOISTING_H_
+
+#include "llvm/CodeGen/MachineFunctionAnalysis.h"
+#include "llvm/Pass.h"
+#include "llvm/Target/TargetData.h"
+
+namespace llvm {
+
+class FunctionPass;
+class Function;
+
+// Hoisting the alloca instructions in the non-entry blocks to the entry
+// block.
+class NVPTXAllocaHoisting : public FunctionPass {
+public:
+  static char ID; // Pass ID
+  NVPTXAllocaHoisting() : FunctionPass(ID) {}
+
+  void getAnalysisUsage(AnalysisUsage &AU) const {
+    AU.addRequired<TargetData>();
+    AU.addPreserved<MachineFunctionAnalysis>();
+  }
+
+  virtual const char *getPassName() const {
+    return "NVPTX specific alloca hoisting";
+  }
+
+  virtual bool runOnFunction(Function &function);
+};
+
+extern FunctionPass *createAllocaHoisting();
+
+} // end namespace llvm
+
+#endif // NVPTX_ALLOCA_HOISTING_H_