[Hexagon] Start using regmasks on calls

All the cool targets are doing it...

llvm-svn: 295371

1 files changed, 9 insertions, 3 deletions

diff --git a/llvm/lib/Target/Hexagon/HexagonRegisterInfo.cpp b/llvm/lib/Target/Hexagon/HexagonRegisterInfo.cpp
index 42568db4a13..a6af751d5f5 100644
--- a/llvm/lib/Target/Hexagon/HexagonRegisterInfo.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonRegisterInfo.cpp
@@ -36,6 +36,9 @@
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetOptions.h"
 
+#define GET_REGINFO_TARGET_DESC
+#include "HexagonGenRegisterInfo.inc"
+
 using namespace llvm;
 
 HexagonRegisterInfo::HexagonRegisterInfo()
@@ -134,6 +137,12 @@ HexagonRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
 }
 
 
+const uint32_t *HexagonRegisterInfo::getCallPreservedMask(
+      const MachineFunction &MF, CallingConv::ID) const {
+  return HexagonCSR_RegMask;
+}
+
+
 BitVector HexagonRegisterInfo::getReservedRegs(const MachineFunction &MF)
   const {
   BitVector Reserved(getNumRegs());
@@ -284,6 +293,3 @@ unsigned HexagonRegisterInfo::getFirstCallerSavedNonParamReg() const {
   return Hexagon::R6;
 }
 
-
-#define GET_REGINFO_TARGET_DESC
-#include "HexagonGenRegisterInfo.inc"