; LLVM IR from JessonYue/LeetCodeLearning :: BaseDataStructure/stack/BinaryStack.ll (Z8scaleFunPci)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z8scaleFunPci(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = call i64 @strlen(ptr noundef %9) #6
  %11 = trunc i64 %10 to i32
  %12 = sub nsw i32 %11, 1
  store i32 %12, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  %13 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %13, ptr %7, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %63, %2
  %15 = load i32, ptr %7, align 4, !tbaa !9
  %16 = icmp sge i32 %15, 0
  br i1 %16, label %17, label %66

17:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = load i32, ptr %7, align 4, !tbaa !9
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds i8, ptr %18, i64 %20
  %22 = load i8, ptr %21, align 1, !tbaa !11
  %23 = sext i8 %22 to i32
  %24 = icmp sge i32 %23, 48
  br i1 %24, label %25, label %41

25:                                               ; preds = %17
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds i8, ptr %26, i64 %28
  %30 = load i8, ptr %29, align 1, !tbaa !11
  %31 = sext i8 %30 to i32
  %32 = icmp sle i32 %31, 57
  br i1 %32, label %33, label %41

33:                                               ; preds = %25
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = load i32, ptr %7, align 4, !tbaa !9
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds i8, ptr %34, i64 %36
  %38 = load i8, ptr %37, align 1, !tbaa !11
  %39 = sext i8 %38 to i32
  %40 = sub nsw i32 %39, 48
  store i32 %40, ptr %8, align 4, !tbaa !9
  br label %49

41:                                               ; preds = %25, %17
  %42 = load ptr, ptr %3, align 8, !tbaa !5
  %43 = load i32, ptr %7, align 4, !tbaa !9
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds i8, ptr %42, i64 %44
  %46 = load i8, ptr %45, align 1, !tbaa !11
  %47 = sext i8 %46 to i32
  %48 = sub nsw i32 %47, 55
  store i32 %48, ptr %8, align 4, !tbaa !9
  br label %49

49:                                               ; preds = %41, %33
  %50 = load i32, ptr %8, align 4, !tbaa !9
  %51 = sitofp i32 %50 to double
  %52 = load i32, ptr %4, align 4, !tbaa !9
  %53 = sitofp i32 %52 to double
  %54 = load i32, ptr %5, align 4, !tbaa !9
  %55 = load i32, ptr %7, align 4, !tbaa !9
  %56 = sub nsw i32 %54, %55
  %57 = sitofp i32 %56 to double
  %58 = call double @pow(double noundef %53, double noundef %57) #5
  %59 = load i32, ptr %6, align 4, !tbaa !9
  %60 = sitofp i32 %59 to double
  %61 = call double @llvm.fmuladd.f64(double %51, double %58, double %60)
  %62 = fptosi double %61 to i32
  store i32 %62, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  br label %63

63:                                               ; preds = %49
  %64 = load i32, ptr %7, align 4, !tbaa !9
  %65 = add nsw i32 %64, -1
  store i32 %65, ptr %7, align 4, !tbaa !9
  br label %14, !llvm.loop !12

66:                                               ; preds = %14
  %67 = load i32, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  ret i32 %67
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #2

; Function Attrs: nounwind
declare double @pow(double noundef, double noundef) #3

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind willreturn memory(read) "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #5 = { nounwind }
attributes #6 = { nounwind willreturn memory(read) }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: mustprogress nofree nounwind memory(write, argmem: readwrite) uwtable
define dso_local noundef i32 @_Z8scaleFunPci(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %0) #4
  %4 = trunc i64 %3 to i32
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %6 = add i64 %3, 4294967295
  %7 = sitofp i32 %1 to double
  %8 = and i64 %6, 4294967295
  br label %9

9:                                                ; preds = %.lr.ph, %9
  %indvars.iv = phi i64 [ %8, %.lr.ph ], [ %indvars.iv.next, %9 ]
  %.01820 = phi i32 [ 0, %.lr.ph ], [ %23, %9 ]
  %10 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv
  %11 = load i8, ptr %10, align 1, !tbaa !5
  %12 = add i8 %11, -48
  %or.cond = icmp ult i8 %12, 10
  %13 = zext nneg i8 %12 to i32
  %14 = sext i8 %11 to i32
  %15 = add nsw i32 %14, -55
  %.0 = select i1 %or.cond, i32 %13, i32 %15
  %16 = sitofp i32 %.0 to double
  %17 = sub i64 %6, %indvars.iv
  %18 = trunc i64 %17 to i32
  %19 = sitofp i32 %18 to double
  %20 = tail call double @pow(double noundef %7, double noundef %19) #5
  %21 = sitofp i32 %.01820 to double
  %22 = tail call double @llvm.fmuladd.f64(double %16, double %20, double %21)
  %23 = fptosi double %22 to i32
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %.not = icmp eq i64 %indvars.iv, 0
  br i1 %.not, label %._crit_edge, label %9, !llvm.loop !8

._crit_edge:                                      ; preds = %9, %2
  %.018.lcssa = phi i32 [ 0, %2 ], [ %23, %9 ]
  ret i32 %.018.lcssa
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nofree nounwind willreturn memory(write)
declare double @pow(double noundef, double noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #3

attributes #0 = { mustprogress nofree nounwind memory(write, argmem: readwrite) uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nofree nounwind willreturn memory(argmem: read) "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { mustprogress nofree nounwind willreturn memory(write) "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { nounwind willreturn memory(read) }
attributes #5 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass