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

; 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: nounwind uwtable
declare dso_local i32 @vec_new(ptr noundef, i64 noundef, i64 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @vec_from(ptr noundef %0, ptr noundef %1, i64 noundef %2, i64 noundef %3) #0 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store i64 %2, ptr %8, align 8, !tbaa !9
  store i64 %3, ptr %9, align 8, !tbaa !9
  %10 = load ptr, ptr %6, align 8, !tbaa !5
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %18

12:                                               ; preds = %4
  %13 = load ptr, ptr %7, align 8, !tbaa !5
  %14 = icmp ne ptr %13, null
  br i1 %14, label %15, label %18

15:                                               ; preds = %12
  %16 = load i64, ptr %9, align 8, !tbaa !9
  %17 = icmp eq i64 %16, 0
  br i1 %17, label %18, label %19

18:                                               ; preds = %15, %12, %4
  store i32 -1, ptr %5, align 4
  br label %38

19:                                               ; preds = %15
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = load i64, ptr %8, align 8, !tbaa !9
  %22 = load i64, ptr %9, align 8, !tbaa !9
  %23 = call i32 @vec_new(ptr noundef %20, i64 noundef %21, i64 noundef %22)
  %24 = icmp slt i32 %23, 0
  br i1 %24, label %25, label %26

25:                                               ; preds = %19
  store i32 -1, ptr %5, align 4
  br label %38

26:                                               ; preds = %19
  br label %27

27:                                               ; preds = %26
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.s_vec, ptr %28, i32 0, i32 0
  %30 = load ptr, ptr %29, align 8, !tbaa !11
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  %32 = load ptr, ptr %6, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.s_vec, ptr %32, i32 0, i32 2
  %34 = load i64, ptr %33, align 8, !tbaa !13
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %30, ptr align 1 %31, i64 %34, i1 false)
  %35 = load i64, ptr %8, align 8, !tbaa !9
  %36 = load ptr, ptr %6, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.s_vec, ptr %36, i32 0, i32 3
  store i64 %35, ptr %37, align 8, !tbaa !14
  store i32 1, ptr %5, align 4
  br label %38

38:                                               ; preds = %27, %25, %18
  %39 = load i32, ptr %5, align 4
  ret i32 %39
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }

!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 = !{!"long", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"s_vec", !6, i64 0, !10, i64 8, !10, i64 16, !10, i64 24}
!13 = !{!12, !10, i64 16}
!14 = !{!12, !10, i64 24}


; 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 i32 @vec_new(ptr noundef, i64 noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @vec_from(ptr noundef %0, ptr noundef readonly %1, i64 noundef %2, i64 noundef %3) local_unnamed_addr #0 {
  %5 = icmp eq ptr %0, null
  %6 = icmp eq ptr %1, null
  %or.cond.not16 = or i1 %5, %6
  %7 = icmp eq i64 %3, 0
  %or.cond3 = or i1 %or.cond.not16, %7
  br i1 %or.cond3, label %16, label %8

8:                                                ; preds = %4
  %9 = tail call i32 @vec_new(ptr noundef nonnull %0, i64 noundef %2, i64 noundef %3)
  %10 = icmp slt i32 %9, 0
  br i1 %10, label %16, label %11

11:                                               ; preds = %8
  %12 = load ptr, ptr %0, align 8, !tbaa !5
  %13 = getelementptr inbounds i8, ptr %0, i64 16
  %14 = load i64, ptr %13, align 8, !tbaa !11
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 1 %12, ptr nonnull align 1 %1, i64 %14, i1 false)
  %15 = getelementptr inbounds i8, ptr %0, i64 24
  store i64 %2, ptr %15, align 8, !tbaa !12
  br label %16

16:                                               ; preds = %8, %4, %11
  %.0 = phi i32 [ 1, %11 ], [ -1, %4 ], [ -1, %8 ]
  ret i32 %.0
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }

!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 16}
!12 = !{!6, !10, i64 24}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass