; LLVM IR from juliuskoskela/c-vec :: vec (vec_find)

; 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.s_vec = type { ptr, i64, i64, i64 }

; 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 ptr @vec_get(ptr noundef, i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @vec_find(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 i64, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %16

11:                                               ; preds = %2
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.s_vec, ptr %12, i32 0, i32 0
  %14 = load ptr, ptr %13, align 8, !tbaa !9
  %15 = icmp ne ptr %14, null
  br i1 %15, label %17, label %16

16:                                               ; preds = %11, %2
  store ptr null, ptr %3, align 8
  store i32 1, ptr %8, align 4
  br label %39

17:                                               ; preds = %11
  store i64 0, ptr %7, align 8, !tbaa !12
  br label %18

18:                                               ; preds = %35, %17
  %19 = load i64, ptr %7, align 8, !tbaa !12
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.s_vec, ptr %20, i32 0, i32 3
  %22 = load i64, ptr %21, align 8, !tbaa !13
  %23 = icmp ult i64 %19, %22
  br i1 %23, label %24, label %38

24:                                               ; preds = %18
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = load i64, ptr %7, align 8, !tbaa !12
  %27 = call ptr @vec_get(ptr noundef %25, i64 noundef %26)
  store ptr %27, ptr %6, align 8, !tbaa !5
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = call zeroext i1 %28(ptr noundef %29)
  %31 = zext i1 %30 to i32
  %32 = icmp eq i32 %31, 1
  br i1 %32, label %33, label %35

33:                                               ; preds = %24
  %34 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %34, ptr %3, align 8
  store i32 1, ptr %8, align 4
  br label %39

35:                                               ; preds = %24
  %36 = load i64, ptr %7, align 8, !tbaa !12
  %37 = add i64 %36, 1
  store i64 %37, ptr %7, align 8, !tbaa !12
  br label %18, !llvm.loop !14

38:                                               ; preds = %18
  store ptr null, ptr %3, align 8
  store i32 1, ptr %8, align 4
  br label %39

39:                                               ; preds = %38, %33, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %40 = load ptr, ptr %3, align 8
  ret ptr %40
}

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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"s_vec", !6, i64 0, !11, i64 8, !11, i64 16, !11, i64 24}
!11 = !{!"long", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !11, i64 24}
!14 = distinct !{!14, !15}
!15 = !{!"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 ptr @vec_get(ptr noundef, i64 noundef) local_unnamed_addr #0

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

3:                                                ; preds = %2
  %4 = load ptr, ptr %0, align 8, !tbaa !5
  %.not12 = icmp eq ptr %4, null
  br i1 %.not12, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %3
  %5 = getelementptr inbounds i8, ptr %0, i64 24
  %6 = load i64, ptr %5, align 8, !tbaa !11
  %.not16 = icmp eq i64 %6, 0
  br i1 %.not16, label %.loopexit, label %.lr.ph

7:                                                ; preds = %.lr.ph
  %8 = add nuw i64 %.013, 1
  %9 = load i64, ptr %5, align 8, !tbaa !11
  %10 = icmp ult i64 %8, %9
  br i1 %10, label %.lr.ph, label %.loopexit, !llvm.loop !12

.lr.ph:                                           ; preds = %.preheader, %7
  %.013 = phi i64 [ %8, %7 ], [ 0, %.preheader ]
  %11 = tail call ptr @vec_get(ptr noundef nonnull %0, i64 noundef %.013)
  %12 = tail call zeroext i1 %1(ptr noundef %11) #1
  br i1 %12, label %.loopexit, label %7

.loopexit:                                        ; preds = %.lr.ph, %7, %.preheader, %2, %3
  %.010 = phi ptr [ null, %3 ], [ null, %2 ], [ null, %.preheader ], [ %11, %.lr.ph ], [ null, %7 ]
  ret ptr %.010
}

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 = { 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 = !{!"s_vec", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !10, i64 24}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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