1 files changed, 0 insertions, 70 deletions
diff --git a/lib/CodeGen/MaxStackAlignment.cpp b/lib/CodeGen/MaxStackAlignment.cpp
deleted file mode 100644
index d327cfa..0000000
--- a/lib/CodeGen/MaxStackAlignment.cpp
+++ /dev/null
@@ -1,70 +0,0 @@
-//===-- MaxStackAlignment.cpp - Compute the required stack alignment -- ---===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This pass looks for vector register usage and aligned local objects to
-// calculate the maximum required alignment for a function. This is used by
-// targets which support it to determine if dynamic stack realignment is
-// necessary.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/Passes.h"
-
-using namespace llvm;
-
-namespace {
-  struct MaximalStackAlignmentCalculator : public MachineFunctionPass {
-    static char ID;
-    MaximalStackAlignmentCalculator() : MachineFunctionPass(&ID) {}
-
-    virtual bool runOnMachineFunction(MachineFunction &MF) {
-      MachineFrameInfo *FFI = MF.getFrameInfo();
-      MachineRegisterInfo &RI = MF.getRegInfo();
-
-      // Calculate max stack alignment of all already allocated stack objects.
-      FFI->calculateMaxStackAlignment();
-      unsigned MaxAlign = FFI->getMaxAlignment();
-
-      // Be over-conservative: scan over all vreg defs and find whether vector
-      // registers are used. If yes, there is probability that vector registers
-      // will be spilled and thus the stack needs to be aligned properly.
-      // FIXME: It would be better to only do this if a spill actually
-      // happens rather than conseratively aligning the stack regardless.
-      for (unsigned RegNum = TargetRegisterInfo::FirstVirtualRegister;
-           RegNum < RI.getLastVirtReg(); ++RegNum)
-        MaxAlign = std::max(MaxAlign, RI.getRegClass(RegNum)->getAlignment());
-
-      if (FFI->getMaxAlignment() == MaxAlign)
-        return false;
-
-      FFI->setMaxAlignment(MaxAlign);
-      return true;
-    }
-
-    virtual const char *getPassName() const {
-      return "Stack Alignment Requirements Auto-Detector";
-    }
-
-    virtual void getAnalysisUsage(AnalysisUsage &AU) const {
-      AU.setPreservesCFG();
-      MachineFunctionPass::getAnalysisUsage(AU);
-    }
-  };
-
-  char MaximalStackAlignmentCalculator::ID = 0;
-}
-
-FunctionPass*
-llvm::createMaxStackAlignmentCalculatorPass() {
-  return new MaximalStackAlignmentCalculator();
-}
-