; LLVM IR from elarity/data-structure-php-clanguage :: clang.linear-list (update_element)

; 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.seq_list = type { [6 x i32], i32 }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @update_element(i32 noundef %0, i32 noundef %1, ptr noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !9
  %9 = load i32, ptr %5, align 4, !tbaa !5
  %10 = icmp slt i32 %9, 1
  br i1 %10, label %17, label %11

11:                                               ; preds = %3
  %12 = load i32, ptr %5, align 4, !tbaa !5
  %13 = load ptr, ptr %7, align 8, !tbaa !9
  %14 = getelementptr inbounds %struct.seq_list, ptr %13, i32 0, i32 1
  %15 = load i32, ptr %14, align 4, !tbaa !11
  %16 = icmp sgt i32 %12, %15
  br i1 %16, label %17, label %18

17:                                               ; preds = %11, %3
  store i32 -1, ptr %4, align 4
  br label %27

18:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %19 = load i32, ptr %5, align 4, !tbaa !5
  %20 = sub nsw i32 %19, 1
  store i32 %20, ptr %8, align 4, !tbaa !5
  %21 = load i32, ptr %6, align 4, !tbaa !5
  %22 = load ptr, ptr %7, align 8, !tbaa !9
  %23 = getelementptr inbounds %struct.seq_list, ptr %22, i32 0, i32 0
  %24 = load i32, ptr %8, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [6 x i32], ptr %23, i64 0, i64 %25
  store i32 %21, ptr %26, align 4, !tbaa !5
  store i32 1, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %27

27:                                               ; preds = %18, %17
  %28 = load i32, ptr %4, align 4
  ret i32 %28
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

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 = !{!"int", !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 = !{!12, !6, i64 24}
!12 = !{!"seq_list", !7, i64 0, !6, 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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local range(i32 -1, 2) i32 @update_element(i32 noundef %0, i32 noundef %1, ptr nocapture noundef %2) local_unnamed_addr #0 {
  %4 = icmp slt i32 %0, 1
  br i1 %4, label %13, label %5

5:                                                ; preds = %3
  %6 = getelementptr inbounds i8, ptr %2, i64 24
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = icmp slt i32 %7, %0
  br i1 %8, label %13, label %9

9:                                                ; preds = %5
  %10 = add nsw i32 %0, -1
  %11 = zext nneg i32 %10 to i64
  %12 = getelementptr inbounds [6 x i32], ptr %2, i64 0, i64 %11
  store i32 %1, ptr %12, align 4, !tbaa !10
  br label %13

13:                                               ; preds = %3, %5, %9
  %.0 = phi i32 [ 1, %9 ], [ -1, %5 ], [ -1, %3 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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, !9, i64 24}
!6 = !{!"seq_list", !7, i64 0, !9, i64 24}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!"int", !7, i64 0}
!10 = !{!9, !9, i64 0}


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