Add support to locate local variables in frames (early version.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26994 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 0 deletions

diff --git a/lib/Target/Alpha/AlphaRegisterInfo.cpp b/lib/Target/Alpha/AlphaRegisterInfo.cpp
index 31b20da392..f5c6dd67f5 100644
--- a/lib/Target/Alpha/AlphaRegisterInfo.cpp
+++ b/lib/Target/Alpha/AlphaRegisterInfo.cpp
@@ -21,6 +21,7 @@
 #include "llvm/CodeGen/MachineInstrBuilder.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineLocation.h"
 #include "llvm/Target/TargetFrameInfo.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetOptions.h"
@@ -353,6 +354,18 @@ void AlphaRegisterInfo::emitEpilogue(MachineFunction &MF,
      }
 }
 
+void AlphaRegisterInfo::getLocation(MachineFunction &MF, unsigned Index,
+                                    MachineLocation &ML) const {
+  assert(0 && "Needs to be defined for target");
+  MachineFrameInfo *MFI = MF.getFrameInfo();
+  bool FP = hasFP(MF);
+  
+  // FIXME - Needs to handle register variables.
+  // FIXME - Faking that llvm number is same as gcc numbering.
+  ML.set((FP ? Alpha::R15 : Alpha::R30) - Alpha::R0,
+         MFI->getObjectOffset(Index) + MFI->getStackSize());
+}
+
 #include "AlphaGenRegisterInfo.inc"
 
 std::string AlphaRegisterInfo::getPrettyName(unsigned reg)