[CodeGen] Run machine optimizations once

1 files changed, 1 insertions, 19 deletions

diff --git a/backend/lib/CodeGen/MachineLICM.cpp b/backend/lib/CodeGen/MachineLICM.cpp
index 6d76d5d..6ab15dc 100644
--- a/backend/lib/CodeGen/MachineLICM.cpp
+++ b/backend/lib/CodeGen/MachineLICM.cpp
@@ -7,7 +7,6 @@
 #include "rcc/CodeGen/MachineAnalyses.h"
 #include "rcc/CodeGen/MachineBasicBlock.h"
 #include "rcc/CodeGen/MachineFunction.h"
-#include "rcc/CodeGen/MachineFunctionCloner.h"
 #include "rcc/CodeGen/MachineInstr.h"
 #include "rcc/CodeGen/MachineOperand.h"
 #include "rcc/CodeGen/MachineRegisterInfo.h"
@@ -321,24 +320,7 @@ const MachinePassContract &MachineLICMPass::contract() const noexcept {
 Expected<MachinePassResult> MachineLICMPass::run(MachineFunction &Function,
                                                  const TargetDescription &Target,
                                                  MachineFunctionAnalysisManager &Analyses) {
-  auto Trial = cloneMachineFunction(
-      Function, Target,
-      MachineFunctionCloneOptions{.NewStableID = Function.stableID(), .NewName = std::nullopt});
-  if (!Trial) {
-    return std::unexpected(
-        withErrorContext(Trial.error(), "machine LICM transaction setup failed: "));
-  }
-  MachineFunctionAnalysisManager TrialAnalyses;
-  auto TrialResult = runImplementation(*Trial->ClonedFunction, Target, TrialAnalyses);
-  if (!TrialResult)
-    return std::unexpected(TrialResult.error());
-
-  auto Result = runImplementation(Function, Target, Analyses);
-  if (!Result) {
-    return std::unexpected(withErrorContext(
-        Result.error(), "machine LICM diverged after a successful transaction preflight: "));
-  }
-  return Result;
+  return runImplementation(Function, Target, Analyses);
 }
 
 Expected<MachinePassResult>