; LLVM IR from OpenFAST/openfast :: modules/map/src/bstring (bstraux)

; 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"

%struct.tagbstring = type { i32, i32, ptr }

declare ptr @bstrcpy(ptr noundef) #0

declare ptr @bmidstr(ptr noundef, i32 noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local ptr @bHead(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = icmp eq ptr %6, null
  br i1 %7, label %24, label %8

8:                                                ; preds = %2
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = icmp slt i32 %9, 0
  br i1 %10, label %24, label %11

11:                                               ; preds = %8
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.tagbstring, ptr %12, i32 0, i32 0
  %14 = load i32, ptr %13, align 8, !tbaa !11
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.tagbstring, ptr %15, i32 0, i32 1
  %17 = load i32, ptr %16, align 4, !tbaa !13
  %18 = icmp slt i32 %14, %17
  br i1 %18, label %19, label %25

19:                                               ; preds = %11
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.tagbstring, ptr %20, i32 0, i32 0
  %22 = load i32, ptr %21, align 8, !tbaa !11
  %23 = icmp sgt i32 %22, 0
  br i1 %23, label %24, label %25

24:                                               ; preds = %19, %8, %2
  store ptr null, ptr %3, align 8
  br label %38

25:                                               ; preds = %19, %11
  %26 = load i32, ptr %5, align 4, !tbaa !9
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.tagbstring, ptr %27, i32 0, i32 1
  %29 = load i32, ptr %28, align 4, !tbaa !13
  %30 = icmp sge i32 %26, %29
  br i1 %30, label %31, label %34

31:                                               ; preds = %25
  %32 = load ptr, ptr %4, align 8, !tbaa !5
  %33 = call ptr @bstrcpy(ptr noundef %32)
  store ptr %33, ptr %3, align 8
  br label %38

34:                                               ; preds = %25
  %35 = load ptr, ptr %4, align 8, !tbaa !5
  %36 = load i32, ptr %5, align 4, !tbaa !9
  %37 = call ptr @bmidstr(ptr noundef %35, i32 noundef 0, i32 noundef %36)
  store ptr %37, ptr %3, align 8
  br label %38

38:                                               ; preds = %34, %31, %24
  %39 = load ptr, ptr %3, align 8
  ret ptr %39
}

attributes #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 = { 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" }

!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 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"tagbstring", !10, i64 0, !10, i64 4, !6, i64 8}
!13 = !{!12, !10, i64 4}


; 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"

declare ptr @bstrcpy(ptr noundef) local_unnamed_addr #0

declare ptr @bmidstr(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local ptr @bHead(ptr noundef %0, i32 noundef %1) local_unnamed_addr #1 {
  %3 = icmp eq ptr %0, null
  %4 = icmp slt i32 %1, 0
  %or.cond = or i1 %3, %4
  br i1 %or.cond, label %16, label %5

5:                                                ; preds = %2
  %6 = load i32, ptr %0, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %0, i64 4
  %8 = load i32, ptr %7, align 4, !tbaa !11
  %9 = icmp slt i32 %6, %8
  %10 = icmp sgt i32 %6, 0
  %or.cond14 = and i1 %10, %9
  br i1 %or.cond14, label %16, label %11

11:                                               ; preds = %5
  %.not = icmp sgt i32 %8, %1
  br i1 %.not, label %14, label %12

12:                                               ; preds = %11
  %13 = tail call ptr @bstrcpy(ptr noundef nonnull %0) #2
  br label %16

14:                                               ; preds = %11
  %15 = tail call ptr @bmidstr(ptr noundef nonnull %0, i32 noundef 0, i32 noundef %1) #2
  br label %16

16:                                               ; preds = %2, %5, %14, %12
  %.0 = phi ptr [ %13, %12 ], [ %15, %14 ], [ null, %5 ], [ null, %2 ]
  ret ptr %.0
}

attributes #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 = { 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, !7, i64 0}
!6 = !{!"tagbstring", !7, i64 0, !7, i64 4, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 4}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass