From b9a905781ee8ee49660c6733530d42dece94d12a Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Mon, 25 Feb 2008 03:57:32 +0000 Subject: [PATCH] Temporarily reverting 46959. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47542 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Analysis/ScalarEvolution.cpp | 4 ++-- test/Analysis/ScalarEvolution/2008-02-11-ReversedCondition.ll | 1 + 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp index 876ebd474b3..0db02d98c20 100644 --- a/lib/Analysis/ScalarEvolution.cpp +++ b/lib/Analysis/ScalarEvolution.cpp @@ -1919,8 +1919,8 @@ SCEVHandle ScalarEvolutionsImpl::ComputeIterationCount(const Loop *L) { // At this point, we would like to compute how many iterations of the // loop the predicate will return true for these inputs. - if (LHS->isLoopInvariant(L) && !RHS->isLoopInvariant(L)) { - // If there is a loop-invariant, force it into the RHS. + if (isa(LHS) && !isa(RHS)) { + // If there is a constant, force it into the RHS. std::swap(LHS, RHS); Cond = ICmpInst::getSwappedPredicate(Cond); } diff --git a/test/Analysis/ScalarEvolution/2008-02-11-ReversedCondition.ll b/test/Analysis/ScalarEvolution/2008-02-11-ReversedCondition.ll index e191b35c498..3f88b0130f9 100644 --- a/test/Analysis/ScalarEvolution/2008-02-11-ReversedCondition.ll +++ b/test/Analysis/ScalarEvolution/2008-02-11-ReversedCondition.ll @@ -1,4 +1,5 @@ ; RUN: llvm-as < %s | opt -scalar-evolution -analyze | grep {Loop header: ( 0 smax %n) iterations!} +; XFAIL: * define void @foo(i32 %n) { entry: -- 2.34.1