From cd847a8f3059d87cc6c5343d2dae7b25aacac322 Mon Sep 17 00:00:00 2001
From: Adam Nemet <anemet@apple.com>
Date: Tue, 28 Mar 2017 20:11:52 +0000
Subject: [IR] Add AllowContract to FastMathFlags

-ffp-contract=fast does not currently work with LTO because it's passed as a
TargetOption to the backend rather than in the IR. This adds it to
FastMathFlags.

This is toward fixing PR25721

Differential Revision: https://reviews.llvm.org/D31164

llvm-svn: 298939
---
 llvm/lib/AsmParser/LLLexer.cpp | 1 +
 llvm/lib/AsmParser/LLParser.h  | 4 ++++
 llvm/lib/AsmParser/LLToken.h   | 1 +
 3 files changed, 6 insertions(+)

(limited to 'llvm/lib/AsmParser')

diff --git a/llvm/lib/AsmParser/LLLexer.cpp b/llvm/lib/AsmParser/LLLexer.cpp
index 752942fc9fc..49a8ce4bed0 100644
--- a/llvm/lib/AsmParser/LLLexer.cpp
+++ b/llvm/lib/AsmParser/LLLexer.cpp
@@ -548,6 +548,7 @@ lltok::Kind LLLexer::LexIdentifier() {
   KEYWORD(ninf);
   KEYWORD(nsz);
   KEYWORD(arcp);
+  KEYWORD(contract);
   KEYWORD(fast);
   KEYWORD(nuw);
   KEYWORD(nsw);
diff --git a/llvm/lib/AsmParser/LLParser.h b/llvm/lib/AsmParser/LLParser.h
index 7dae33480ed..3a794142172 100644
--- a/llvm/lib/AsmParser/LLParser.h
+++ b/llvm/lib/AsmParser/LLParser.h
@@ -193,6 +193,10 @@ namespace llvm {
         case lltok::kw_ninf: FMF.setNoInfs();          Lex.Lex(); continue;
         case lltok::kw_nsz:  FMF.setNoSignedZeros();   Lex.Lex(); continue;
         case lltok::kw_arcp: FMF.setAllowReciprocal(); Lex.Lex(); continue;
+        case lltok::kw_contract:
+          FMF.setAllowContract(true);
+          Lex.Lex();
+          continue;
         default: return FMF;
         }
       return FMF;
diff --git a/llvm/lib/AsmParser/LLToken.h b/llvm/lib/AsmParser/LLToken.h
index 048aeee90b3..33f8e63daa0 100644
--- a/llvm/lib/AsmParser/LLToken.h
+++ b/llvm/lib/AsmParser/LLToken.h
@@ -98,6 +98,7 @@ enum Kind {
   kw_ninf,
   kw_nsz,
   kw_arcp,
+  kw_contract,
   kw_fast,
   kw_nuw,
   kw_nsw,
-- 
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