vendor/llvm/llvm-r135360

1 files changed, 16 insertions, 6 deletions

diff --git a/lib/Target/SystemZ/SystemZRegisterInfo.cpp b/lib/Target/SystemZ/SystemZRegisterInfo.cpp
index ed62cfff08aa..59692e883366 100644
--- a/lib/Target/SystemZ/SystemZRegisterInfo.cpp
+++ b/lib/Target/SystemZ/SystemZRegisterInfo.cpp
@@ -25,12 +25,15 @@
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetOptions.h"
 #include "llvm/ADT/BitVector.h"
+
+#define GET_REGINFO_TARGET_DESC
+#include "SystemZGenRegisterInfo.inc"
+
 using namespace llvm;
 
 SystemZRegisterInfo::SystemZRegisterInfo(SystemZTargetMachine &tm,
                                          const SystemZInstrInfo &tii)
-  : SystemZGenRegisterInfo(SystemZ::ADJCALLSTACKUP, SystemZ::ADJCALLSTACKDOWN),
-    TM(tm), TII(tii) {
+  : SystemZGenRegisterInfo(), TM(tm), TII(tii) {
 }
 
 const unsigned*
@@ -51,10 +54,20 @@ BitVector SystemZRegisterInfo::getReservedRegs(const MachineFunction &MF) const
   BitVector Reserved(getNumRegs());
   const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering();
 
-  if (TFI->hasFP(MF))
+  if (TFI->hasFP(MF)) {
+    // R11D is the frame pointer. Reserve all aliases.
     Reserved.set(SystemZ::R11D);
+    Reserved.set(SystemZ::R11W);
+    Reserved.set(SystemZ::R10P);
+    Reserved.set(SystemZ::R10Q);
+  }
+
   Reserved.set(SystemZ::R14D);
   Reserved.set(SystemZ::R15D);
+  Reserved.set(SystemZ::R14W);
+  Reserved.set(SystemZ::R15W);
+  Reserved.set(SystemZ::R14P);
+  Reserved.set(SystemZ::R14Q);
   return Reserved;
 }
 
@@ -143,6 +156,3 @@ int SystemZRegisterInfo::getLLVMRegNum(unsigned DwarfRegNo, bool isEH) const {
   assert(0 && "What is the dwarf register number");
   return -1;
 }
-
-
-#include "SystemZGenRegisterInfo.inc"