From: Florian Hahn <flo@fhahn.com>
Date: Sat, 2 Mar 2019 01:57:28 +0000 (+0000)
Subject: [SCEV] Remove undef check for SCEVConstant (NFC)
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d56d7c48aabe04ce5a25b5cd64abdbe41a0befb3;p=llvm

[SCEV] Remove undef check for SCEVConstant (NFC)

The value stored in SCEVConstant is of type ConstantInt*, which can
never be UndefValue. So we should never hit that code.

Reviewers: mkazantsev, sanjoy

Reviewed By: sanjoy

Differential Revision: https://reviews.llvm.org/D58851

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@355257 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index cca425bf550..290e87a1f0f 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -10824,8 +10824,6 @@ static inline bool containsUndefs(const SCEV *S) {
   return SCEVExprContains(S, [](const SCEV *S) {
     if (const auto *SU = dyn_cast<SCEVUnknown>(S))
       return isa<UndefValue>(SU->getValue());
-    else if (const auto *SC = dyn_cast<SCEVConstant>(S))
-      return isa<UndefValue>(SC->getValue());
     return false;
   });
 }