[PM] MLSM has been enabled for a way. Reclaim a cl::opt.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293401 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/IPO/PassManagerBuilder.cpp b/lib/Transforms/IPO/PassManagerBuilder.cpp
index 88de06c4d2a101e307b572c876e2c29e777bf468..3c862d55697722abcc39293c17287fce0244989b 100644 (file)
--- a/lib/Transforms/IPO/PassManagerBuilder.cpp
+++ b/lib/Transforms/IPO/PassManagerBuilder.cpp
@@ -93,10 +93,6 @@ static cl::opt<CFLAAType>
                         clEnumValN(CFLAAType::Both, "both",
                                    "Enable both variants of CFL-AA")));
 
-static cl::opt<bool>
-EnableMLSM("mlsm", cl::init(true), cl::Hidden,
-           cl::desc("Enable motion of merged load and store"));
-
 static cl::opt<bool> EnableLoopInterchange(
     "enable-loopinterchange", cl::init(false), cl::Hidden,
     cl::desc("Enable the new, experimental LoopInterchange Pass"));
@@ -328,8 +324,7 @@ void PassManagerBuilder::addFunctionSimplificationPasses(
   addExtensionsToPM(EP_LoopOptimizerEnd, MPM);
 
   if (OptLevel > 1) {
-    if (EnableMLSM)
-      MPM.add(createMergedLoadStoreMotionPass()); // Merge ld/st in diamonds
+    MPM.add(createMergedLoadStoreMotionPass()); // Merge ld/st in diamonds
     MPM.add(NewGVN ? createNewGVNPass()
                    : createGVNPass(DisableGVNLoadPRE)); // Remove redundancies
   }
@@ -761,8 +756,7 @@ void PassManagerBuilder::addLTOOptimizationPasses(legacy::PassManagerBase &PM) {
   PM.add(createGlobalsAAWrapperPass()); // IP alias analysis.
 
   PM.add(createLICMPass());                 // Hoist loop invariants.
-  if (EnableMLSM)
-    PM.add(createMergedLoadStoreMotionPass()); // Merge ld/st in diamonds.
+  PM.add(createMergedLoadStoreMotionPass()); // Merge ld/st in diamonds.
   PM.add(NewGVN ? createNewGVNPass()
                 : createGVNPass(DisableGVNLoadPRE)); // Remove redundancies.
   PM.add(createMemCpyOptPass());            // Remove dead memcpys.