Don't dereference the end() iterator. Thanks to

ENABLE_EXPENSIVE_CHECKS for finding this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57181 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index f03db748973e18c6dfe6914069534f63dc257ad2..26d019b284167f18fa77e16bc54944eb5778f5f4 100644 (file)
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -143,7 +143,7 @@ int VirtRegMap::getEmergencySpillSlot(const TargetRegisterClass *RC) {
     LowSpillSlot = SS;
   if (HighSpillSlot == NO_STACK_SLOT || SS > HighSpillSlot)
     HighSpillSlot = SS;
-  I->second = SS;
+  EmergencySpillSlots[RC] = SS;
   return SS;
 }