[backports-1.10] Add passes to -O1 pipeline to reduce allocations in reinterpret (#57731)

Author: gbaraldi

src/pipeline.cpp

@@ -458,6 +458,13 @@ 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());