From 72235d084dceac9126d793bb0bd8c1a07a050f16 Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Fri, 28 Apr 2017 21:48:03 +0000
Subject: [PATCH] [ConstantRange] Use const references to prevent a couple
 APInt copies. NFC

llvm-svn: 301694
---
 llvm/lib/IR/ConstantRange.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/IR/ConstantRange.cpp b/llvm/lib/IR/ConstantRange.cpp
index 0cc38b0..a58a641 100644
--- a/llvm/lib/IR/ConstantRange.cpp
+++ b/llvm/lib/IR/ConstantRange.cpp
@@ -210,8 +210,8 @@ ConstantRange::makeGuaranteedNoWrapRegion(Instruction::BinaryOps BinOp,
                                               -Other.getUnsignedMax()));
 
   if (NoWrapKind & OBO::NoSignedWrap) {
-    APInt SignedMin = Other.getSignedMin();
-    APInt SignedMax = Other.getSignedMax();
+    const APInt &SignedMin = Other.getSignedMin();
+    const APInt &SignedMax = Other.getSignedMax();
 
     if (SignedMax.isStrictlyPositive())
       Result = SubsetIntersect(
-- 
2.7.4