[MemorySSA] Teach LoopSimplify to preserve MemorySSA.
Summary:
Preserve MemorySSA in LoopSimplify, in the old pass manager, if the analysis is available.
Do not preserve it in the new pass manager.
Update tests.
Subscribers: nemanjai, jlebar, javed.absar, Prazek, kbarton, zzheng, jsji, llvm-commits, george.burgess.iv, chandlerc
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D60833
llvm-svn: 360270
diff --git a/llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp b/llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
index 64a97f8..0e672f1 100644
--- a/llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
+++ b/llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
@@ -1545,7 +1545,7 @@
// This function canonicalizes the loop into Loop-Simplify and LCSSA forms.
auto CanonicalizeLoop = [&] (Loop *L, bool IsOriginalLoop) {
formLCSSARecursively(*L, DT, &LI, &SE);
- simplifyLoop(L, &DT, &LI, &SE, nullptr, true);
+ simplifyLoop(L, &DT, &LI, &SE, nullptr, nullptr, true);
// Pre/post loops are slow paths, we do not need to perform any loop
// optimizations on them.
if (!IsOriginalLoop)