From: Craig Topper <craig.topper@gmail.com>
Date: Thu, 4 May 2017 21:45:49 +0000 (+0000)
Subject: [JumpThreading] When processing compares, explicitly check that the result type is... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=195a2d9be0a76a7531e1a1614045664814ea309b;p=llvm

[JumpThreading] When processing compares, explicitly check that the result type is not a vector rather than check for it being an integer.

Compares always return a scalar integer or vector of integers. isIntegerTy returns false for vectors, but that's not completely obvious. So using isVectorTy is less confusing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302198 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/JumpThreading.cpp b/lib/Transforms/Scalar/JumpThreading.cpp
index c7ac955cde0..ae353ea4459 100644
--- a/lib/Transforms/Scalar/JumpThreading.cpp
+++ b/lib/Transforms/Scalar/JumpThreading.cpp
@@ -580,7 +580,7 @@ bool JumpThreadingPass::ComputeValueKnownInPredecessors(
 
     // If comparing a live-in value against a constant, see if we know the
     // live-in value on any predecessors.
-    if (isa<Constant>(Cmp->getOperand(1)) && Cmp->getType()->isIntegerTy()) {
+    if (isa<Constant>(Cmp->getOperand(1)) && !Cmp->getType()->isVectorTy()) {
       Constant *CmpConst = cast<Constant>(Cmp->getOperand(1));
 
       if (!isa<Instruction>(Cmp->getOperand(0)) ||