[CodeGen] Run machine optimizations once

1 files changed, 1 insertions, 20 deletions

diff --git a/backend/lib/CodeGen/MachinePeepholeOptimizer.cpp b/backend/lib/CodeGen/MachinePeepholeOptimizer.cpp
index 16c935d..ae39334 100644
--- a/backend/lib/CodeGen/MachinePeepholeOptimizer.cpp
+++ b/backend/lib/CodeGen/MachinePeepholeOptimizer.cpp
@@ -4,13 +4,10 @@
 
 #include "rcc/CodeGen/MachineBasicBlock.h"
 #include "rcc/CodeGen/MachineFunction.h"
-#include "rcc/CodeGen/MachineFunctionCloner.h"
 #include "rcc/CodeGen/MachineInstr.h"
 #include "rcc/CodeGen/TargetDescription.h"
 #include "rcc/CodeGen/TargetInstrInfo.h"
 
-#include <optional>
-
 namespace rcc {
 namespace {
 
@@ -41,23 +38,7 @@ const MachinePassContract &MachinePeepholeOptimizerPass::contract() const noexce
 Expected<MachinePassResult> MachinePeepholeOptimizerPass::run(MachineFunction &Function,
                                                               const TargetDescription &Target,
                                                               MachineFunctionAnalysisManager &) {
-  auto Trial = cloneMachineFunction(
-      Function, Target,
-      MachineFunctionCloneOptions{.NewStableID = Function.stableID(), .NewName = std::nullopt});
-  if (!Trial) {
-    return std::unexpected(
-        withErrorContext(Trial.error(), "machine peephole transaction setup failed: "));
-  }
-  auto TrialResult = runImplementation(*Trial->ClonedFunction, Target);
-  if (!TrialResult)
-    return std::unexpected(TrialResult.error());
-
-  auto Result = runImplementation(Function, Target);
-  if (!Result) {
-    return std::unexpected(withErrorContext(
-        Result.error(), "machine peephole diverged after a successful transaction preflight: "));
-  }
-  return Result;
+  return runImplementation(Function, Target);
 }
 
 Expected<MachinePassResult>