; LLVM IR from caryll/otfcc :: lib/table (LTSH)

; 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.table_LTSH = type { i16, i16, ptr }

; 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
define dso_local ptr @otfcc_buildLTSH(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i16, align 2
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %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 %41

11:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %12 = call ptr (...) @bufnew()
  store ptr %12, ptr %6, align 8, !tbaa !5
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  call void @bufwrite16b(ptr noundef %13, i16 noundef zeroext 0)
  %14 = load ptr, ptr %6, align 8, !tbaa !5
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.table_LTSH, ptr %15, i32 0, i32 1
  %17 = load i16, ptr %16, align 2, !tbaa !9
  call void @bufwrite16b(ptr noundef %14, i16 noundef zeroext %17)
  call void @llvm.lifetime.start.p0(i64 2, ptr %7) #3
  store i16 0, ptr %7, align 2, !tbaa !12
  br label %18

18:                                               ; preds = %36, %11
  %19 = load i16, ptr %7, align 2, !tbaa !12
  %20 = zext i16 %19 to i32
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.table_LTSH, ptr %21, i32 0, i32 1
  %23 = load i16, ptr %22, align 2, !tbaa !9
  %24 = zext i16 %23 to i32
  %25 = icmp slt i32 %20, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 2, ptr %7) #3
  br label %39

27:                                               ; preds = %18
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.table_LTSH, ptr %29, i32 0, i32 2
  %31 = load ptr, ptr %30, align 8, !tbaa !13
  %32 = load i16, ptr %7, align 2, !tbaa !12
  %33 = zext i16 %32 to i64
  %34 = getelementptr inbounds i8, ptr %31, i64 %33
  %35 = load i8, ptr %34, align 1, !tbaa !14
  call void @bufwrite8(ptr noundef %28, i8 noundef zeroext %35)
  br label %36

36:                                               ; preds = %27
  %37 = load i16, ptr %7, align 2, !tbaa !12
  %38 = add i16 %37, 1
  store i16 %38, ptr %7, align 2, !tbaa !12
  br label %18, !llvm.loop !15

39:                                               ; preds = %26
  %40 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %40, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %41

41:                                               ; preds = %39, %10
  %42 = load ptr, ptr %3, align 8
  ret ptr %42
}

declare ptr @bufnew(...) #2

declare void @bufwrite16b(ptr noundef, i16 noundef zeroext) #2

declare void @bufwrite8(ptr noundef, i8 noundef zeroext) #2

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 = { "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 }

!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, !11, i64 2}
!10 = !{!"", !11, i64 0, !11, i64 2, !6, i64 8}
!11 = !{!"short", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !6, i64 8}
!14 = !{!7, !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"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
define dso_local noundef ptr @otfcc_buildLTSH(ptr noundef readonly %0, ptr nocapture noundef readnone %1) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %.loopexit, label %3

3:                                                ; preds = %2
  %4 = tail call ptr (...) @bufnew() #2
  tail call void @bufwrite16b(ptr noundef %4, i16 noundef zeroext 0) #2
  %5 = getelementptr inbounds i8, ptr %0, i64 2
  %6 = load i16, ptr %5, align 2, !tbaa !5
  tail call void @bufwrite16b(ptr noundef %4, i16 noundef zeroext %6) #2
  %7 = load i16, ptr %5, align 2, !tbaa !5
  %.not14 = icmp eq i16 %7, 0
  br i1 %.not14, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %8 = getelementptr inbounds i8, ptr %0, i64 8
  br label %9

9:                                                ; preds = %.lr.ph, %9
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %9 ]
  %10 = load ptr, ptr %8, align 8, !tbaa !11
  %11 = getelementptr inbounds i8, ptr %10, i64 %indvars.iv
  %12 = load i8, ptr %11, align 1, !tbaa !12
  tail call void @bufwrite8(ptr noundef %4, i8 noundef zeroext %12) #2
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %13 = load i16, ptr %5, align 2, !tbaa !5
  %14 = zext i16 %13 to i64
  %15 = icmp ult i64 %indvars.iv.next, %14
  br i1 %15, label %9, label %.loopexit, !llvm.loop !13

.loopexit:                                        ; preds = %9, %3, %2
  %.011 = phi ptr [ null, %2 ], [ %4, %3 ], [ %4, %9 ]
  ret ptr %.011
}

declare ptr @bufnew(...) local_unnamed_addr #1

declare void @bufwrite16b(ptr noundef, i16 noundef zeroext) local_unnamed_addr #1

declare void @bufwrite8(ptr noundef, i8 noundef zeroext) local_unnamed_addr #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 = { "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 2}
!6 = !{!"", !7, i64 0, !7, i64 2, !10, i64 8}
!7 = !{!"short", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!8, !8, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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