Add an unwind_to field to basic blocks, making them Users instead of Values.
This is the first checkin for PR1269, the new EH infrastructure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47802 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AsmParser/LLLexer.cpp b/lib/AsmParser/LLLexer.cpp
index f78079b..18b774b 100644
--- a/lib/AsmParser/LLLexer.cpp
+++ b/lib/AsmParser/LLLexer.cpp
@@ -474,6 +474,7 @@
   KEYWORD("asm", ASM_TOK);
   KEYWORD("sideeffect", SIDEEFFECT);
   KEYWORD("gc", GC);
+  KEYWORD("unwind_to", UNWIND_TO);
 
   KEYWORD("cc", CC_TOK);
   KEYWORD("ccc", CCC_TOK);