[RegisterBankInfo] Constify the member of the XXXMapping maps.

This makes it obvious that items in those maps behave like statically
created objects.

llvm-svn: 282327

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp b/llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp
index 52963caa8bf..bac9ba860bf 100644
--- a/llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp
@@ -344,7 +344,7 @@ RegisterBankInfo::getPartialMapping(unsigned StartIdx, unsigned Length,
 
   ++NumPartialMappingsCreated;
 
-  PartialMapping *&PartMapping = MapOfPartialMappings[Hash];
+  const PartialMapping *&PartMapping = MapOfPartialMappings[Hash];
   PartMapping = new PartialMapping{StartIdx, Length, RegBank};
   return *PartMapping;
 }
@@ -376,7 +376,7 @@ RegisterBankInfo::getValueMapping(const PartialMapping *BreakDown,
 
   ++NumValueMappingsCreated;
 
-  ValueMapping *&ValMapping = MapOfValueMappings[Hash];
+  const ValueMapping *&ValMapping = MapOfValueMappings[Hash];
   ValMapping = new ValueMapping{BreakDown, NumBreakDowns};
   return *ValMapping;
 }