Reorganized the Sparc backend to be more modular -- each different
implementation of a Target{RegInfo, InstrInfo, Machine, etc} now has a separate
header and a separate implementation file.
This means that instead of a massive SparcInternals.h that forces a
recompilation of the whole target whenever a minor detail is changed, you should
only recompile a few files.
Note that SparcInternals.h is still around; its contents should be minimized.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10500 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/SparcV9/SparcV9FrameInfo.cpp b/lib/Target/SparcV9/SparcV9FrameInfo.cpp
new file mode 100644
index 0000000..d283e94
--- /dev/null
+++ b/lib/Target/SparcV9/SparcV9FrameInfo.cpp
@@ -0,0 +1,65 @@
+//===-- Sparc.cpp - General implementation file for the Sparc Target ------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Interface to stack frame layout info for the UltraSPARC. Starting offsets
+// for each area of the stack frame are aligned at a multiple of
+// getStackFrameSizeAlignment().
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineFunctionInfo.h"
+#include "llvm/Target/TargetFrameInfo.h"
+#include "SparcFrameInfo.h"
+
+using namespace llvm;
+
+int
+SparcFrameInfo::getFirstAutomaticVarOffset(MachineFunction&, bool& pos) const {
+ pos = false; // static stack area grows downwards
+ return StaticAreaOffsetFromFP;
+}
+
+int
+SparcFrameInfo::getRegSpillAreaOffset(MachineFunction& mcInfo, bool& pos) const
+{
+ // ensure no more auto vars are added
+ mcInfo.getInfo()->freezeAutomaticVarsArea();
+
+ pos = false; // static stack area grows downwards
+ unsigned autoVarsSize = mcInfo.getInfo()->getAutomaticVarsSize();
+ return StaticAreaOffsetFromFP - autoVarsSize;
+}
+
+int SparcFrameInfo::getTmpAreaOffset(MachineFunction& mcInfo, bool& pos) const {
+ MachineFunctionInfo *MFI = mcInfo.getInfo();
+ MFI->freezeAutomaticVarsArea(); // ensure no more auto vars are added
+ MFI->freezeSpillsArea(); // ensure no more spill slots are added
+
+ pos = false; // static stack area grows downwards
+ unsigned autoVarsSize = MFI->getAutomaticVarsSize();
+ unsigned spillAreaSize = MFI->getRegSpillsSize();
+ int offset = autoVarsSize + spillAreaSize;
+ return StaticAreaOffsetFromFP - offset;
+}
+
+int
+SparcFrameInfo::getDynamicAreaOffset(MachineFunction& mcInfo, bool& pos) const {
+ // Dynamic stack area grows downwards starting at top of opt-args area.
+ // The opt-args, required-args, and register-save areas are empty except
+ // during calls and traps, so they are shifted downwards on each
+ // dynamic-size alloca.
+ pos = false;
+ unsigned optArgsSize = mcInfo.getInfo()->getMaxOptionalArgsSize();
+ if (int extra = optArgsSize % getStackFrameSizeAlignment())
+ optArgsSize += (getStackFrameSizeAlignment() - extra);
+ int offset = optArgsSize + FirstOptionalOutgoingArgOffsetFromSP;
+ assert((offset - OFFSET) % getStackFrameSizeAlignment() == 0);
+ return offset;
+}