; LLVM IR from caryll/otfcc :: lib/bk (bkblock)

; 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 uwtable
declare dso_local void @bkblock_pushint(ptr noundef, i32 noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @bk_new_Block(i32 noundef, ...) #1

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

10:                                               ; preds = %2
  store ptr null, ptr %3, align 8
  br label %30

11:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %12 = call ptr (i32, ...) @bk_new_Block(i32 noundef 0)
  store ptr %12, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  store i64 0, ptr %7, align 8, !tbaa !5
  br label %13

13:                                               ; preds = %25, %11
  %14 = load i64, ptr %7, align 8, !tbaa !5
  %15 = load i64, ptr %4, align 8, !tbaa !5
  %16 = icmp ult i64 %14, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  br label %28

18:                                               ; preds = %13
  %19 = load ptr, ptr %6, align 8, !tbaa !9
  %20 = load ptr, ptr %5, align 8, !tbaa !9
  %21 = load i64, ptr %7, align 8, !tbaa !5
  %22 = getelementptr inbounds i8, ptr %20, i64 %21
  %23 = load i8, ptr %22, align 1, !tbaa !11
  %24 = sext i8 %23 to i32
  call void @bkblock_pushint(ptr noundef %19, i32 noundef 1, i32 noundef %24)
  br label %25

25:                                               ; preds = %18
  %26 = load i64, ptr %7, align 8, !tbaa !5
  %27 = add i64 %26, 1
  store i64 %27, ptr %7, align 8, !tbaa !5
  br label %13, !llvm.loop !12

28:                                               ; preds = %17
  %29 = load ptr, ptr %6, align 8, !tbaa !9
  store ptr %29, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %30

30:                                               ; preds = %28, %10
  %31 = load ptr, ptr %3, align 8
  ret ptr %31
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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, !6, i64 0}
!6 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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: nounwind uwtable
declare dso_local void @bkblock_pushint(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local ptr @bk_new_Block(i32 noundef, ...) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local ptr @bk_newBlockFromStringLen(i64 noundef %0, ptr noundef readonly %1) local_unnamed_addr #0 {
  %.not = icmp eq ptr %1, null
  br i1 %.not, label %.loopexit, label %3

3:                                                ; preds = %2
  %4 = tail call ptr (i32, ...) @bk_new_Block(i32 noundef 0)
  %.not11 = icmp eq i64 %0, 0
  br i1 %.not11, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.010 = phi i64 [ %8, %.lr.ph ], [ 0, %3 ]
  %5 = getelementptr inbounds i8, ptr %1, i64 %.010
  %6 = load i8, ptr %5, align 1, !tbaa !5
  %7 = sext i8 %6 to i32
  tail call void @bkblock_pushint(ptr noundef %4, i32 noundef 1, i32 noundef %7)
  %8 = add nuw i64 %.010, 1
  %exitcond.not = icmp eq i64 %8, %0
  br i1 %exitcond.not, label %.loopexit, label %.lr.ph, !llvm.loop !8

.loopexit:                                        ; preds = %.lr.ph, %3, %2
  %.08 = phi ptr [ null, %2 ], [ %4, %3 ], [ %4, %.lr.ph ]
  ret ptr %.08
}

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" }

!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,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass