; LLVM IR from jingweizhanghuai/Morn :: test (test_message3)

; 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: nounwind uwtable
define dso_local void @func(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  store ptr %4, ptr %3, align 8, !tbaa !5
  br label %5

5:                                                ; preds = %44, %1
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = load i8, ptr %6, align 1, !tbaa !9
  %8 = icmp ne i8 %7, 0
  br i1 %8, label %10, label %9

9:                                                ; preds = %5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  br label %47

10:                                               ; preds = %5
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = load i8, ptr %11, align 1, !tbaa !9
  %13 = sext i8 %12 to i32
  %14 = icmp sge i32 %13, 97
  br i1 %14, label %15, label %26

15:                                               ; preds = %10
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = load i8, ptr %16, align 1, !tbaa !9
  %18 = sext i8 %17 to i32
  %19 = icmp sle i32 %18, 122
  br i1 %19, label %20, label %26

20:                                               ; preds = %15
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = load i8, ptr %21, align 1, !tbaa !9
  %23 = sext i8 %22 to i32
  %24 = add nsw i32 %23, -32
  %25 = trunc i32 %24 to i8
  store i8 %25, ptr %21, align 1, !tbaa !9
  br label %43

26:                                               ; preds = %15, %10
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = load i8, ptr %27, align 1, !tbaa !9
  %29 = sext i8 %28 to i32
  %30 = icmp sge i32 %29, 65
  br i1 %30, label %31, label %42

31:                                               ; preds = %26
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = load i8, ptr %32, align 1, !tbaa !9
  %34 = sext i8 %33 to i32
  %35 = icmp sle i32 %34, 90
  br i1 %35, label %36, label %42

36:                                               ; preds = %31
  %37 = load ptr, ptr %3, align 8, !tbaa !5
  %38 = load i8, ptr %37, align 1, !tbaa !9
  %39 = sext i8 %38 to i32
  %40 = add nsw i32 %39, 32
  %41 = trunc i32 %40 to i8
  store i8 %41, ptr %37, align 1, !tbaa !9
  br label %42

42:                                               ; preds = %36, %31, %26
  br label %43

43:                                               ; preds = %42, %20
  br label %44

44:                                               ; preds = %43
  %45 = load ptr, ptr %3, align 8, !tbaa !5
  %46 = getelementptr inbounds i8, ptr %45, i32 1
  store ptr %46, ptr %3, align 8, !tbaa !5
  br label %5, !llvm.loop !10

47:                                               ; preds = %9
  ret void
}

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

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

attributes #0 = { 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 }

!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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"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: nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @func(ptr nocapture noundef %0) local_unnamed_addr #0 {
  %2 = load i8, ptr %0, align 1, !tbaa !5
  %.not13 = icmp eq i8 %2, 0
  br i1 %.not13, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %10, %1
  ret void

.lr.ph:                                           ; preds = %1, %10
  %3 = phi i8 [ %12, %10 ], [ %2, %1 ]
  %.014 = phi ptr [ %11, %10 ], [ %0, %1 ]
  %4 = add i8 %3, -97
  %or.cond = icmp ult i8 %4, 26
  br i1 %or.cond, label %5, label %6

5:                                                ; preds = %.lr.ph
  %narrow = add nsw i8 %3, -32
  br label %.sink.split

6:                                                ; preds = %.lr.ph
  %7 = add i8 %3, -65
  %or.cond12 = icmp ult i8 %7, 26
  br i1 %or.cond12, label %8, label %10

8:                                                ; preds = %6
  %9 = or disjoint i8 %3, 32
  br label %.sink.split

.sink.split:                                      ; preds = %8, %5
  %narrow.sink = phi i8 [ %narrow, %5 ], [ %9, %8 ]
  store i8 %narrow.sink, ptr %.014, align 1, !tbaa !5
  br label %10

10:                                               ; preds = %.sink.split, %6
  %11 = getelementptr inbounds i8, ptr %.014, i64 1
  %12 = load i8, ptr %11, align 1, !tbaa !5
  %.not = icmp eq i8 %12, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !8
}

attributes #0 = { nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) 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/C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass