; LLVM IR from mahendramahara/DSA-in-C-Programing :: GRAPH (Prims-Algirithm-Minimum-Spanning-Tree)

; 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"

; Function Attrs: nounwind uwtable
define dso_local i32 @minKey(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %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 4, ptr %5) #2
  store i32 2147483647, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %35, %2
  %9 = load i32, ptr %7, align 4, !tbaa !9
  %10 = icmp slt i32 %9, 5
  br i1 %10, label %12, label %11

11:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %38

12:                                               ; preds = %8
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = load i32, ptr %7, align 4, !tbaa !9
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds i32, ptr %13, i64 %15
  %17 = load i32, ptr %16, align 4, !tbaa !9
  %18 = icmp eq i32 %17, 0
  br i1 %18, label %19, label %34

19:                                               ; preds = %12
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = load i32, ptr %7, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i32, ptr %20, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !9
  %25 = load i32, ptr %5, align 4, !tbaa !9
  %26 = icmp slt i32 %24, %25
  br i1 %26, label %27, label %34

27:                                               ; preds = %19
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = load i32, ptr %7, align 4, !tbaa !9
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds i32, ptr %28, i64 %30
  %32 = load i32, ptr %31, align 4, !tbaa !9
  store i32 %32, ptr %5, align 4, !tbaa !9
  %33 = load i32, ptr %7, align 4, !tbaa !9
  store i32 %33, ptr %6, align 4, !tbaa !9
  br label %34

34:                                               ; preds = %27, %19, %12
  br label %35

35:                                               ; preds = %34
  %36 = load i32, ptr %7, align 4, !tbaa !9
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %7, align 4, !tbaa !9
  br label %8, !llvm.loop !11

38:                                               ; preds = %11
  %39 = load i32, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %39
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 nosync nounwind willreturn memory(argmem: readwrite) }
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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local i32 @minKey(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %4 = icmp eq i32 %3, 0
  br i1 %4, label %5, label %7

5:                                                ; preds = %2
  %6 = load i32, ptr %0, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %5, %2
  %.112 = phi i32 [ 2147483647, %2 ], [ %6, %5 ]
  %8 = getelementptr inbounds i8, ptr %1, i64 4
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %10 = icmp eq i32 %9, 0
  br i1 %10, label %11, label %15

11:                                               ; preds = %7
  %12 = getelementptr inbounds i8, ptr %0, i64 4
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = icmp slt i32 %13, %.112
  %spec.select.1 = tail call i32 @llvm.smin.i32(i32 %13, i32 %.112)
  %spec.select14.1 = zext i1 %14 to i32
  br label %15

15:                                               ; preds = %11, %7
  %.112.1 = phi i32 [ %.112, %7 ], [ %spec.select.1, %11 ]
  %.1.1 = phi i32 [ 0, %7 ], [ %spec.select14.1, %11 ]
  %16 = getelementptr inbounds i8, ptr %1, i64 8
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = icmp eq i32 %17, 0
  br i1 %18, label %19, label %23

19:                                               ; preds = %15
  %20 = getelementptr inbounds i8, ptr %0, i64 8
  %21 = load i32, ptr %20, align 4, !tbaa !5
  %22 = icmp slt i32 %21, %.112.1
  %spec.select.2 = tail call i32 @llvm.smin.i32(i32 %21, i32 %.112.1)
  %spec.select14.2 = select i1 %22, i32 2, i32 %.1.1
  br label %23

23:                                               ; preds = %19, %15
  %.112.2 = phi i32 [ %.112.1, %15 ], [ %spec.select.2, %19 ]
  %.1.2 = phi i32 [ %.1.1, %15 ], [ %spec.select14.2, %19 ]
  %24 = getelementptr inbounds i8, ptr %1, i64 12
  %25 = load i32, ptr %24, align 4, !tbaa !5
  %26 = icmp eq i32 %25, 0
  br i1 %26, label %27, label %31

27:                                               ; preds = %23
  %28 = getelementptr inbounds i8, ptr %0, i64 12
  %29 = load i32, ptr %28, align 4, !tbaa !5
  %30 = icmp slt i32 %29, %.112.2
  %spec.select.3 = tail call i32 @llvm.smin.i32(i32 %29, i32 %.112.2)
  %spec.select14.3 = select i1 %30, i32 3, i32 %.1.2
  br label %31

31:                                               ; preds = %27, %23
  %.112.3 = phi i32 [ %.112.2, %23 ], [ %spec.select.3, %27 ]
  %.1.3 = phi i32 [ %.1.2, %23 ], [ %spec.select14.3, %27 ]
  %32 = getelementptr inbounds i8, ptr %1, i64 16
  %33 = load i32, ptr %32, align 4, !tbaa !5
  %34 = icmp eq i32 %33, 0
  br i1 %34, label %35, label %39

35:                                               ; preds = %31
  %36 = getelementptr inbounds i8, ptr %0, i64 16
  %37 = load i32, ptr %36, align 4, !tbaa !5
  %38 = icmp slt i32 %37, %.112.3
  %spec.select14.4 = select i1 %38, i32 4, i32 %.1.3
  br label %39

39:                                               ; preds = %35, %31
  %.1.4 = phi i32 [ %.1.3, %31 ], [ %spec.select14.4, %35 ]
  ret i32 %.1.4
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smin.i32(i32, i32) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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 nosync nounwind speculatable willreturn memory(none) }

!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"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass