Revert the previous commit. Go ahead and hoist rematerializable instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50990 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/MachineLICM.cpp b/lib/CodeGen/MachineLICM.cpp
index 829583054459cba8e38d3cf2d202383d83f94416..c2adb1e8b730957fd57d7a33ab369b614e3ec0b8 100644 (file)
--- a/lib/CodeGen/MachineLICM.cpp
+++ b/lib/CodeGen/MachineLICM.cpp
@@ -297,10 +297,6 @@ bool MachineLICM::IsLoopInvariantInst(MachineInstr &I) {
 void MachineLICM::Hoist(MachineInstr &MI) {
   if (!IsLoopInvariantInst(MI)) return;
 
-  // Hoisting things that are trivially rematerializable may result in worse
-  // code than before.
-  if (TII->isTriviallyReMaterializable(&MI)) return;
-
   std::vector<MachineBasicBlock*> Preds;
 
   // Non-back-edge predecessors.