Imported Upstream version 5.18.0.179

Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215

external/llvm/lib/Target/Mips/MipsFrameLowering.h

@@ -0,0 +1,54 @@
+//===-- MipsFrameLowering.h - Define frame lowering for Mips ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H
+#define LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H
+
+#include "Mips.h"
+#include "llvm/CodeGen/TargetFrameLowering.h"
+
+namespace llvm {
+  class MipsSubtarget;
+
+class MipsFrameLowering : public TargetFrameLowering {
+protected:
+  const MipsSubtarget &STI;
+
+public:
+  explicit MipsFrameLowering(const MipsSubtarget &sti, unsigned Alignment)
+    : TargetFrameLowering(StackGrowsDown, Alignment, 0, Alignment), STI(sti) {}
+
+  static const MipsFrameLowering *create(const MipsSubtarget &ST);
+
+  bool hasFP(const MachineFunction &MF) const override;
+
+  bool hasBP(const MachineFunction &MF) const;
+
+  bool isFPCloseToIncomingSP() const override { return false; }
+
+  MachineBasicBlock::iterator
+  eliminateCallFramePseudoInstr(MachineFunction &MF,
+                                MachineBasicBlock &MBB,
+                                MachineBasicBlock::iterator I) const override;
+
+protected:
+  uint64_t estimateStackSize(const MachineFunction &MF) const;
+};
+
+/// Create MipsFrameLowering objects.
+const MipsFrameLowering *createMips16FrameLowering(const MipsSubtarget &ST);
+const MipsFrameLowering *createMipsSEFrameLowering(const MipsSubtarget &ST);
+
+} // End llvm namespace
+
+#endif