From 75f50e15bf8fff6fba1d4678adedd33ef6a945e5 Mon Sep 17 00:00:00 2001
From: Zhengyang Liu <liuz@cs.utah.edu>
Date: Tue, 24 Nov 2020 14:55:24 -0700
Subject: Adding PoisonValue for representing poison value explicitly in IR

Define ConstantData::PoisonValue.
Add support for poison value to LLLexer/LLParser/BitcodeReader/BitcodeWriter.
Add support for poison value to llvm-c interface.
Add support for poison value to OCaml binding.
Add m_Poison in PatternMatch.

Differential Revision: https://reviews.llvm.org/D71126
---
 llvm/lib/AsmParser/LLLexer.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'llvm/lib/AsmParser/LLLexer.cpp')

diff --git a/llvm/lib/AsmParser/LLLexer.cpp b/llvm/lib/AsmParser/LLLexer.cpp
index b7e3a12..baabd55 100644
--- a/llvm/lib/AsmParser/LLLexer.cpp
+++ b/llvm/lib/AsmParser/LLLexer.cpp
@@ -531,6 +531,7 @@ lltok::Kind LLLexer::LexIdentifier() {
   KEYWORD(undef);
   KEYWORD(null);
   KEYWORD(none);
+  KEYWORD(poison);
   KEYWORD(to);
   KEYWORD(caller);
   KEYWORD(within);
-- 
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