From b15b97ef9ad80ae57dbd22414ef677888dd4e430 Mon Sep 17 00:00:00 2001
From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Wed, 3 Oct 2012 20:58:04 +0000
Subject: [PATCH] Always initialize FPContractable.

false is used as a baseline here, we may want to allow contraction in some of
the cases.  Found by valgrind.

llvm-svn: 165156
---
 clang/lib/CodeGen/CGExprScalar.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/clang/lib/CodeGen/CGExprScalar.cpp b/clang/lib/CodeGen/CGExprScalar.cpp
index 6d25642..0d68ff5 100644
--- a/clang/lib/CodeGen/CGExprScalar.cpp
+++ b/clang/lib/CodeGen/CGExprScalar.cpp
@@ -1261,6 +1261,7 @@ EmitAddConsiderOverflowBehavior(const UnaryOperator *E,
     BinOp.RHS = NextVal;
     BinOp.Ty = E->getType();
     BinOp.Opcode = BO_Add;
+    BinOp.FPContractable = false;
     BinOp.E = E;
     return EmitOverflowCheckedBinOp(BinOp);
   }
@@ -1446,6 +1447,7 @@ Value *ScalarExprEmitter::VisitUnaryMinus(const UnaryOperator *E) {
     BinOp.LHS = llvm::Constant::getNullValue(BinOp.RHS->getType());
   BinOp.Ty = E->getType();
   BinOp.Opcode = BO_Sub;
+  BinOp.FPContractable = false;
   BinOp.E = E;
   return EmitSub(BinOp);
 }
@@ -1681,6 +1683,7 @@ LValue ScalarExprEmitter::EmitCompoundAssignLValue(
   OpInfo.RHS = Visit(E->getRHS());
   OpInfo.Ty = E->getComputationResultType();
   OpInfo.Opcode = E->getOpcode();
+  OpInfo.FPContractable = false;
   OpInfo.E = E;
   // Load/convert the LHS.
   LValue LHSLV = EmitCheckedLValue(E->getLHS(), CodeGenFunction::TCK_Store);
-- 
2.7.4