Add an OtherPreserved field to the CalleeSaved TableGen class.

This field specifies registers that are preserved across function calls,
but that should not be included in the generates SaveList array.

This can be used ot generate regmasks for architectures that save
registers through other means, like SPARC's register windows.

llvm-svn: 189084

1 files changed, 6 insertions, 2 deletions

diff --git a/llvm/lib/Target/Sparc/SparcRegisterInfo.cpp b/llvm/lib/Target/Sparc/SparcRegisterInfo.cpp
index dc97f06b7ca..0b0fe2d4fe8 100644
--- a/llvm/lib/Target/Sparc/SparcRegisterInfo.cpp
+++ b/llvm/lib/Target/Sparc/SparcRegisterInfo.cpp
@@ -40,8 +40,12 @@ SparcRegisterInfo::SparcRegisterInfo(SparcSubtarget &st)
 
 const uint16_t* SparcRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF)
                                                                          const {
-  static const uint16_t CalleeSavedRegs[] = { 0 };
-  return CalleeSavedRegs;
+  return CSR_SaveList;
+}
+
+const uint32_t*
+SparcRegisterInfo::getCallPreservedMask(CallingConv::ID CC) const {
+  return CSR_RegMask;
 }
 
 BitVector SparcRegisterInfo::getReservedRegs(const MachineFunction &MF) const {