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

; 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 void @vec_iter(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = icmp ne ptr %8, null
  br i1 %9, label %10, label %15

10:                                               ; preds = %2
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.s_vec, ptr %11, i32 0, i32 0
  %13 = load ptr, ptr %12, align 8, !tbaa !9
  %14 = icmp ne ptr %13, null
  br i1 %14, label %16, label %15

15:                                               ; preds = %10, %2
  store i32 1, ptr %7, align 4
  br label %32

16:                                               ; preds = %10
  store i64 0, ptr %6, align 8, !tbaa !12
  br label %17

17:                                               ; preds = %23, %16
  %18 = load i64, ptr %6, align 8, !tbaa !12
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.s_vec, ptr %19, i32 0, i32 3
  %21 = load i64, ptr %20, align 8, !tbaa !13
  %22 = icmp ult i64 %18, %21
  br i1 %22, label %23, label %31

23:                                               ; preds = %17
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  %25 = load i64, ptr %6, align 8, !tbaa !12
  %26 = call ptr @vec_get(ptr noundef %24, i64 noundef %25)
  store ptr %26, ptr %5, align 8, !tbaa !5
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  call void %27(ptr noundef %28)
  %29 = load i64, ptr %6, align 8, !tbaa !12
  %30 = add i64 %29, 1
  store i64 %30, ptr %6, align 8, !tbaa !12
  br label %17, !llvm.loop !14

31:                                               ; preds = %17
  store i32 0, ptr %7, align 4
  br label %32

32:                                               ; preds = %31, %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  %33 = load i32, ptr %7, align 4
  switch i32 %33, label %35 [
    i32 0, label %34
    i32 1, label %34
  ]

34:                                               ; preds = %32, %32
  ret void

35:                                               ; preds = %32
  unreachable
}

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 void @vec_iter(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
  %.not9 = icmp eq ptr %4, null
  br i1 %.not9, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %3
  %5 = getelementptr inbounds i8, ptr %0, i64 24
  %6 = load i64, ptr %5, align 8, !tbaa !11
  %.not11 = icmp eq i64 %6, 0
  br i1 %.not11, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %.010 = phi i64 [ %8, %.lr.ph ], [ 0, %.preheader ]
  %7 = tail call ptr @vec_get(ptr noundef nonnull %0, i64 noundef %.010)
  tail call void %1(ptr noundef %7) #1
  %8 = add nuw i64 %.010, 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

.loopexit:                                        ; preds = %.lr.ph, %.preheader, %2, %3
  ret void
}

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