Make reinterpret not allocate in some cases (#224)

Co-authored-by: Gabriel Baraldi <[email protected]>

Author: d-netto

src/pipeline.cpp

@@ -459,6 +459,13 @@ static void buildScalarOptimizerPipeline(FunctionPassManager &FPM, PassBuilder *
         FPM.addPass(IRCEPass());
         FPM.addPass(InstCombinePass());
         FPM.addPass(JumpThreadingPass());
+    } else if (O.getSpeedupLevel() >= 1) {
+        JULIA_PASS(FPM.addPass(AllocOptPass()));
+        FPM.addPass(SROAPass());
+        FPM.addPass(MemCpyOptPass());
+        FPM.addPass(SCCPPass());
+        FPM.addPass(InstCombinePass());
+        FPM.addPass(ADCEPass());
     }
     if (O.getSpeedupLevel() >= 3) {
         FPM.addPass(GVNPass());