It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86MachineFunctionInfo.h b/lib/Target/X86/X86MachineFunctionInfo.h
new file mode 100644
index 0000000..7a21fb2
--- /dev/null
+++ b/lib/Target/X86/X86MachineFunctionInfo.h
@@ -0,0 +1,74 @@
+//====- X86MachineFuctionInfo.h - X86 machine function info -----*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the Evan Cheng and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares X86-specific per-machine-function information.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef X86MACHINEFUNCTIONINFO_H
+#define X86MACHINEFUNCTIONINFO_H
+
+#include "llvm/CodeGen/MachineFunction.h"
+
+namespace llvm {
+
+enum NameDecorationStyle {
+ None,
+ StdCall,
+ FastCall
+};
+
+/// X86MachineFunctionInfo - This class is derived from MachineFunction private
+/// X86 target-specific information for each MachineFunction.
+class X86MachineFunctionInfo : public MachineFunctionInfo {
+ /// ForceFramePointer - True if the function is required to use of frame
+ /// pointer for reasons other than it containing dynamic allocation or
+ /// that FP eliminatation is turned off. For example, Cygwin main function
+ /// contains stack pointer re-alignment code which requires FP.
+ bool ForceFramePointer;
+
+ /// CalleeSavedFrameSize - Size of the callee-saved register portion of the
+ /// stack frame in bytes.
+ unsigned CalleeSavedFrameSize;
+
+ /// BytesToPopOnReturn - amount of bytes function pops on return.
+ /// Used on windows platform for stdcall & fastcall name decoration
+ unsigned BytesToPopOnReturn;
+
+ /// If the function requires additional name decoration, DecorationStyle holds
+ /// the right way to do so.
+ NameDecorationStyle DecorationStyle;
+
+public:
+ X86MachineFunctionInfo() : ForceFramePointer(false),
+ CalleeSavedFrameSize(0),
+ BytesToPopOnReturn(0),
+ DecorationStyle(None) {}
+
+ X86MachineFunctionInfo(MachineFunction &MF) : ForceFramePointer(false),
+ CalleeSavedFrameSize(0),
+ BytesToPopOnReturn(0),
+ DecorationStyle(None) {}
+
+ bool getForceFramePointer() const { return ForceFramePointer;}
+ void setForceFramePointer(bool forceFP) { ForceFramePointer = forceFP; }
+
+ unsigned getCalleeSavedFrameSize() const { return CalleeSavedFrameSize; }
+ void setCalleeSavedFrameSize(unsigned bytes) { CalleeSavedFrameSize = bytes; }
+
+ unsigned getBytesToPopOnReturn() const { return BytesToPopOnReturn; }
+ void setBytesToPopOnReturn (unsigned bytes) { BytesToPopOnReturn = bytes;}
+
+ NameDecorationStyle getDecorationStyle() const { return DecorationStyle; }
+ void setDecorationStyle(NameDecorationStyle style) { DecorationStyle = style;}
+
+};
+} // End llvm namespace
+
+#endif