Use MemorySSA in LICM to do sinking and hoisting.
Summary:
Step 2 in using MemorySSA in LICM:
Use MemorySSA in LICM to do sinking and hoisting, all under "EnableMSSALoopDependency" flag.
Promotion is disabled.
Enable flag in LICM sink/hoist tests to test correctness of this change. Moved one test which
relied on promotion, in order to test all sinking tests.
Reviewers: sanjoy, davide, gberry, george.burgess.iv
Subscribers: llvm-commits, Prazek
Differential Revision: https://reviews.llvm.org/D40375
llvm-svn: 350879
diff --git a/llvm/lib/Transforms/Scalar/LoopSink.cpp b/llvm/lib/Transforms/Scalar/LoopSink.cpp
index 540d19f..2f7ad21 100644
--- a/llvm/lib/Transforms/Scalar/LoopSink.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopSink.cpp
@@ -304,7 +304,7 @@
// No need to check for instruction's operands are loop invariant.
assert(L.hasLoopInvariantOperands(I) &&
"Insts in a loop's preheader should have loop invariant operands!");
- if (!canSinkOrHoistInst(*I, &AA, &DT, &L, &CurAST, false))
+ if (!canSinkOrHoistInst(*I, &AA, &DT, &L, &CurAST, nullptr, false))
continue;
if (sinkInstruction(L, *I, ColdLoopBBs, LoopBlockNumber, LI, DT, BFI))
Changed = true;