Handle another case exposed on X86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25949 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index 24640a9..24457b4 100644
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -274,6 +274,10 @@
/// specified physreg. If CanClobber is true, the physreg can be modified at
/// any time without changing the semantics of the program.
void addAvailable(int Slot, unsigned Reg, bool CanClobber = true) {
+ // If this stack slot is thought to be available in some other physreg,
+ // remove its record.
+ ModifyStackSlot(Slot);
+
PhysRegsAvailable.insert(std::make_pair(Reg, Slot));
SpillSlotsAvailable[Slot] = (Reg << 1) | CanClobber;