Local spiller kills a store if the folded restore is turned into a copy.

But this is incorrect if the spilled value live range extends beyond the
current BB.
It is currently controlled by a temporary option -spiller-check-liveout.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28024 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/CodeGen/VirtRegMap.h b/lib/CodeGen/VirtRegMap.h
index d8c371c6dd..343a4e066a 100644
--- a/lib/CodeGen/VirtRegMap.h
+++ b/lib/CodeGen/VirtRegMap.h
@@ -26,7 +26,7 @@ namespace llvm {
 
   class VirtRegMap {
   public:
-    enum ModRef { isRef = 1, isMod = 2, isModRef = 3 };
+    enum ModRef { isRef = 1, isMod = 2, isModRef = 3, isLiveOut = 4 };
     typedef std::multimap<MachineInstr*,
                           std::pair<unsigned, ModRef> > MI2VirtMapTy;
 
@@ -128,7 +128,7 @@ namespace llvm {
     /// folded into newMI machine instruction.  The OpNum argument indicates the
     /// operand number of OldMI that is folded.
     void virtFolded(unsigned VirtReg, MachineInstr *OldMI, unsigned OpNum,
-                    MachineInstr *NewMI);
+                    MachineInstr *NewMI, bool LiveOut);
 
     /// @brief returns the virtual registers' values folded in memory
     /// operands of this instruction