; LLVM IR from kala13x/libxutils :: src/crypt (hmac)

; 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: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @XHMAC_MD5(ptr noundef, i64 noundef, ptr noundef, i64 noundef, ptr noundef, i64 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local ptr @XHMAC_MD5_NEW(ptr noundef %0, i64 noundef %1, ptr noundef %2, i64 noundef %3) #2 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  %10 = alloca i64, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i64 %1, ptr %7, align 8, !tbaa !9
  store ptr %2, ptr %8, align 8, !tbaa !5
  store i64 %3, ptr %9, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  store i64 33, ptr %10, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #3
  %13 = load i64, ptr %10, align 8, !tbaa !9
  %14 = call noalias ptr @malloc(i64 noundef %13) #4
  store ptr %14, ptr %11, align 8, !tbaa !5
  %15 = load ptr, ptr %11, align 8, !tbaa !5
  %16 = icmp eq ptr %15, null
  br i1 %16, label %17, label %18

17:                                               ; preds = %4
  store ptr null, ptr %5, align 8
  store i32 1, ptr %12, align 4
  br label %27

18:                                               ; preds = %4
  %19 = load ptr, ptr %11, align 8, !tbaa !5
  %20 = load i64, ptr %10, align 8, !tbaa !9
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = load i64, ptr %7, align 8, !tbaa !9
  %23 = load ptr, ptr %8, align 8, !tbaa !5
  %24 = load i64, ptr %9, align 8, !tbaa !9
  %25 = call i32 @XHMAC_MD5(ptr noundef %19, i64 noundef %20, ptr noundef %21, i64 noundef %22, ptr noundef %23, i64 noundef %24)
  %26 = load ptr, ptr %11, align 8, !tbaa !5
  store ptr %26, ptr %5, align 8
  store i32 1, ptr %12, align 4
  br label %27

27:                                               ; preds = %18, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  %28 = load ptr, ptr %5, align 8
  ret ptr %28
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind allocsize(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 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 #3 = { nounwind }
attributes #4 = { nounwind allocsize(0) }

!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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !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 nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @XHMAC_MD5(ptr noundef, i64 noundef, ptr noundef, i64 noundef, ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @XHMAC_MD5_NEW(ptr noundef %0, i64 noundef %1, ptr noundef %2, i64 noundef %3) local_unnamed_addr #1 {
  %5 = tail call noalias dereferenceable_or_null(33) ptr @malloc(i64 noundef 33) #2
  %6 = icmp eq ptr %5, null
  br i1 %6, label %9, label %7

7:                                                ; preds = %4
  %8 = tail call i32 @XHMAC_MD5(ptr noundef nonnull %5, i64 noundef 33, ptr noundef %0, i64 noundef %1, ptr noundef %2, i64 noundef %3)
  br label %9

9:                                                ; preds = %4, %7
  ret ptr %5
}

attributes #0 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { 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 allocsize(0) }

!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)"}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass