Use pointers to the MCAsmInfo and MCRegInfo.

Someone may want to do something crazy, like replace these objects if they
change or something.

No functionality change intended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184175 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/COFFAsmParser.cpp b/lib/MC/MCParser/COFFAsmParser.cpp
index a50eab2..ad8f84c 100644
--- a/lib/MC/MCParser/COFFAsmParser.cpp
+++ b/lib/MC/MCParser/COFFAsmParser.cpp
@@ -453,7 +453,7 @@
 bool COFFAsmParser::ParseSEHRegisterNumber(unsigned &RegNo) {
   SMLoc startLoc = getLexer().getLoc();
   if (getLexer().is(AsmToken::Percent)) {
-    const MCRegisterInfo &MRI = getContext().getRegisterInfo();
+    const MCRegisterInfo *MRI = getContext().getRegisterInfo();
     SMLoc endLoc;
     unsigned LLVMRegNo;
     if (getParser().getTargetParser().ParseRegister(LLVMRegNo,startLoc,endLoc))
@@ -473,7 +473,7 @@
       return Error(startLoc, "expected non-volatile register");
 #endif
 
-    int SEHRegNo = MRI.getSEHRegNum(LLVMRegNo);
+    int SEHRegNo = MRI->getSEHRegNum(LLVMRegNo);
     if (SEHRegNo < 0)
       return Error(startLoc,"register can't be represented in SEH unwind info");
     RegNo = SEHRegNo;