diff options
Diffstat (limited to 'llvm/lib/Transforms/IPO/PassManagerBuilder.cpp')
| -rw-r--r-- | llvm/lib/Transforms/IPO/PassManagerBuilder.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp index fb56088d361..8d5d14af64b 100644 --- a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp +++ b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp @@ -70,6 +70,10 @@ static cl::opt<bool> UseCFLAA("use-cfl-aa", cl::init(false), cl::Hidden, cl::desc("Enable the new, experimental CFL alias analysis")); +static cl::opt<bool> +EnableMLSM("mlsm", cl::desc("Enable motion of merged load and store"), + cl::init(true)); + PassManagerBuilder::PassManagerBuilder() { OptLevel = 2; SizeLevel = 0; @@ -228,7 +232,8 @@ void PassManagerBuilder::populateModulePassManager(PassManagerBase &MPM) { addExtensionsToPM(EP_LoopOptimizerEnd, MPM); if (OptLevel > 1) { - MPM.add(createMergedLoadStoreMotionPass()); // Merge load/stores in diamond + if (EnableMLSM) + MPM.add(createMergedLoadStoreMotionPass()); // Merge ld/st in diamonds MPM.add(createGVNPass(DisableGVNLoadPRE)); // Remove redundancies } MPM.add(createMemCpyOptPass()); // Remove memcpy / form memset @@ -388,7 +393,8 @@ void PassManagerBuilder::addLTOOptimizationPasses(PassManagerBase &PM) { PM.add(createGlobalsModRefPass()); // IP alias analysis. PM.add(createLICMPass()); // Hoist loop invariants. - PM.add(createMergedLoadStoreMotionPass()); // Merge load/stores in diamonds + if (EnableMLSM) + PM.add(createMergedLoadStoreMotionPass()); // Merge ld/st in diamonds. PM.add(createGVNPass(DisableGVNLoadPRE)); // Remove redundancies. PM.add(createMemCpyOptPass()); // Remove dead memcpys. |
