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-rw-r--r--lib/Passes/PassBuilder.cpp6
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/Passes/PassBuilder.cpp b/lib/Passes/PassBuilder.cpp
index 1f638e7683078..afd66f55720a5 100644
--- a/lib/Passes/PassBuilder.cpp
+++ b/lib/Passes/PassBuilder.cpp
@@ -160,6 +160,10 @@ static cl::opt<bool>
cl::Hidden, cl::ZeroOrMore,
cl::desc("Run NewGVN instead of GVN"));
+static cl::opt<bool> EnableEarlyCSEMemSSA(
+ "enable-npm-earlycse-memssa", cl::init(false), cl::Hidden,
+ cl::desc("Enable the EarlyCSE w/ MemorySSA pass for the new PM (default = off)"));
+
static cl::opt<bool> EnableGVNHoist(
"enable-npm-gvn-hoist", cl::init(false), cl::Hidden,
cl::desc("Enable the GVN hoisting pass for the new PM (default = off)"));
@@ -312,7 +316,7 @@ PassBuilder::buildFunctionSimplificationPipeline(OptimizationLevel Level,
FPM.addPass(SROA());
// Catch trivial redundancies
- FPM.addPass(EarlyCSEPass());
+ FPM.addPass(EarlyCSEPass(EnableEarlyCSEMemSSA));
// Hoisting of scalars and load expressions.
if (EnableGVNHoist)