SCEV: Allow simple AddRec * Parameter products in delinearization
This patch also allows the -delinearize pass to delinearize expressions that do
not have an outermost SCEVAddRec expression. The SCEV::delinearize
infrastructure allowed this since r240952, but the -delinearize pass was not
updated yet.
llvm-svn: 250018
diff --git a/llvm/lib/Analysis/Delinearization.cpp b/llvm/lib/Analysis/Delinearization.cpp
index 8e65c4c..baee8b3 100644
--- a/llvm/lib/Analysis/Delinearization.cpp
+++ b/llvm/lib/Analysis/Delinearization.cpp
@@ -102,20 +102,14 @@
if (!BasePointer)
break;
AccessFn = SE->getMinusSCEV(AccessFn, BasePointer);
- const SCEVAddRecExpr *AR = dyn_cast<SCEVAddRecExpr>(AccessFn);
-
- // Do not try to delinearize memory accesses that are not AddRecs.
- if (!AR)
- break;
-
O << "\n";
O << "Inst:" << *Inst << "\n";
O << "In Loop with Header: " << L->getHeader()->getName() << "\n";
- O << "AddRec: " << *AR << "\n";
+ O << "AccessFunction: " << *AccessFn << "\n";
SmallVector<const SCEV *, 3> Subscripts, Sizes;
- SE->delinearize(AR, Subscripts, Sizes, SE->getElementSize(Inst));
+ SE->delinearize(AccessFn, Subscripts, Sizes, SE->getElementSize(Inst));
if (Subscripts.size() == 0 || Sizes.size() == 0 ||
Subscripts.size() != Sizes.size()) {
O << "failed to delinearize\n";