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Temporarily reverting 46959.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47542 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1919,8 +1919,8 @@ SCEVHandle ScalarEvolutionsImpl::ComputeIterationCount(const Loop *L) {
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// At this point, we would like to compute how many iterations of the
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// At this point, we would like to compute how many iterations of the
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// loop the predicate will return true for these inputs.
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// loop the predicate will return true for these inputs.
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if (LHS->isLoopInvariant(L) && !RHS->isLoopInvariant(L)) {
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if (isa<SCEVConstant>(LHS) && !isa<SCEVConstant>(RHS)) {
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// If there is a loop-invariant, force it into the RHS.
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// If there is a constant, force it into the RHS.
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std::swap(LHS, RHS);
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std::swap(LHS, RHS);
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Cond = ICmpInst::getSwappedPredicate(Cond);
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Cond = ICmpInst::getSwappedPredicate(Cond);
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}
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}
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@ -1,4 +1,5 @@
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; RUN: llvm-as < %s | opt -scalar-evolution -analyze | grep {Loop header: ( 0 smax %n) iterations!}
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; RUN: llvm-as < %s | opt -scalar-evolution -analyze | grep {Loop header: ( 0 smax %n) iterations!}
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; XFAIL: *
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define void @foo(i32 %n) {
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define void @foo(i32 %n) {
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entry:
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entry:
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