; LLVM IR from rcliftonharvey/dspfilters4juce :: DSPFilters4JUCEDemo/JuceLibraryCode/juce_cryptography.ll (ZN4juce8BlowFish5unpadEPKvm)

; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN4juce8BlowFish5unpadEPKvm(ptr noundef %0, i64 noundef %1) #1 align 2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i8, align 1
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  %8 = load i64, ptr %5, align 8, !tbaa !9
  %9 = icmp eq i64 %8, 0
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store i32 -1, ptr %3, align 4
  br label %37

11:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #2
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = load i64, ptr %5, align 8, !tbaa !9
  %14 = sub i64 %13, 1
  %15 = getelementptr inbounds i8, ptr %12, i64 %14
  %16 = load i8, ptr %15, align 1, !tbaa !11
  store i8 %16, ptr %6, align 1, !tbaa !11
  %17 = load i8, ptr %6, align 1, !tbaa !11
  %18 = zext i8 %17 to i32
  %19 = icmp eq i32 %18, 0
  br i1 %19, label %29, label %20

20:                                               ; preds = %11
  %21 = load i8, ptr %6, align 1, !tbaa !11
  %22 = zext i8 %21 to i32
  %23 = icmp sgt i32 %22, 8
  br i1 %23, label %29, label %24

24:                                               ; preds = %20
  %25 = load i8, ptr %6, align 1, !tbaa !11
  %26 = zext i8 %25 to i64
  %27 = load i64, ptr %5, align 8, !tbaa !9
  %28 = icmp ugt i64 %26, %27
  br i1 %28, label %29, label %30

29:                                               ; preds = %24, %20, %11
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %36

30:                                               ; preds = %24
  %31 = load i64, ptr %5, align 8, !tbaa !9
  %32 = load i8, ptr %6, align 1, !tbaa !11
  %33 = zext i8 %32 to i64
  %34 = sub i64 %31, %33
  %35 = trunc i64 %34 to i32
  store i32 %35, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %36

36:                                               ; preds = %30, %29
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #2
  br label %37

37:                                               ; preds = %36, %10
  %38 = load i32, ptr %3, align 4
  ret i32 %38
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!7, !7, i64 0}


; 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 norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef i32 @_ZN4juce8BlowFish5unpadEPKvm(ptr nocapture noundef readonly %0, i64 noundef %1) local_unnamed_addr #0 align 2 {
  %3 = icmp eq i64 %1, 0
  br i1 %3, label %15, label %4

4:                                                ; preds = %2
  %5 = getelementptr i8, ptr %0, i64 %1
  %6 = getelementptr i8, ptr %5, i64 -1
  %7 = load i8, ptr %6, align 1, !tbaa !5
  %8 = add i8 %7, -9
  %or.cond = icmp ult i8 %8, -8
  br i1 %or.cond, label %15, label %9

9:                                                ; preds = %4
  %10 = zext nneg i8 %7 to i64
  %11 = icmp ugt i64 %10, %1
  br i1 %11, label %15, label %12

12:                                               ; preds = %9
  %13 = sub i64 %1, %10
  %14 = trunc i64 %13 to i32
  br label %15

15:                                               ; preds = %12, %9, %4, %2
  %.1 = phi i32 [ -1, %2 ], [ %14, %12 ], [ -1, %9 ], [ -1, %4 ]
  ret i32 %.1
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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" }

!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"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass