; LLVM IR from TyrantLucifer/DataStructure :: Graph/C (Dijkstra)

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

; Function Attrs: nounwind uwtable
define dso_local i32 @getMin(ptr noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 32767, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %40, %3
  %11 = load i32, ptr %9, align 4, !tbaa !9
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.Graph, ptr %12, i32 0, i32 2
  %14 = load i32, ptr %13, align 8, !tbaa !11
  %15 = icmp slt i32 %11, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %43

17:                                               ; preds = %10
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = load i32, ptr %9, align 4, !tbaa !9
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds i32, ptr %18, i64 %20
  %22 = load i32, ptr %21, align 4, !tbaa !9
  %23 = icmp ne i32 %22, 0
  br i1 %23, label %39, label %24

24:                                               ; preds = %17
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = load i32, ptr %9, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds i32, ptr %25, i64 %27
  %29 = load i32, ptr %28, align 4, !tbaa !9
  %30 = load i32, ptr %7, align 4, !tbaa !9
  %31 = icmp slt i32 %29, %30
  br i1 %31, label %32, label %39

32:                                               ; preds = %24
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = load i32, ptr %9, align 4, !tbaa !9
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds i32, ptr %33, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !9
  store i32 %37, ptr %7, align 4, !tbaa !9
  %38 = load i32, ptr %9, align 4, !tbaa !9
  store i32 %38, ptr %8, align 4, !tbaa !9
  br label %39

39:                                               ; preds = %32, %24, %17
  br label %40

40:                                               ; preds = %39
  %41 = load i32, ptr %9, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %9, align 4, !tbaa !9
  br label %10, !llvm.loop !13

43:                                               ; preds = %16
  %44 = load i32, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret i32 %44
}

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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 16}
!12 = !{!"Graph", !6, i64 0, !6, i64 8, !10, i64 16, !10, i64 20}
!13 = distinct !{!13, !14}
!14 = !{!"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: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local i32 @getMin(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1, ptr nocapture noundef readonly %2) local_unnamed_addr #0 {
  %4 = getelementptr inbounds i8, ptr %2, i64 16
  %5 = load i32, ptr %4, align 8, !tbaa !5
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %3
  %wide.trip.count = zext nneg i32 %5 to i64
  %xtraiter = and i64 %wide.trip.count, 1
  %7 = icmp eq i32 %5, 1
  br i1 %7, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 2147483646
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %29, %.lr.ph.preheader
  %.1.lcssa.ph = phi i32 [ poison, %.lr.ph.preheader ], [ %.1.1, %29 ]
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.1, %29 ]
  %.01117.unr = phi i32 [ undef, %.lr.ph.preheader ], [ %.1.1, %29 ]
  %.01216.unr = phi i32 [ 32767, %.lr.ph.preheader ], [ %.113.1, %29 ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa
  %8 = getelementptr inbounds i32, ptr %1, i64 %indvars.iv.unr
  %9 = load i32, ptr %8, align 4, !tbaa !11
  %.not.epil = icmp eq i32 %9, 0
  br i1 %.not.epil, label %10, label %._crit_edge

10:                                               ; preds = %.lr.ph.epil
  %11 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.unr
  %12 = load i32, ptr %11, align 4, !tbaa !11
  %13 = icmp slt i32 %12, %.01216.unr
  %14 = trunc nuw nsw i64 %indvars.iv.unr to i32
  %spec.select15.epil = select i1 %13, i32 %14, i32 %.01117.unr
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %10, %.lr.ph.epil, %3
  %.011.lcssa = phi i32 [ undef, %3 ], [ %.1.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %.01117.unr, %.lr.ph.epil ], [ %spec.select15.epil, %10 ]
  ret i32 %.011.lcssa

.lr.ph:                                           ; preds = %29, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.1, %29 ]
  %.01117 = phi i32 [ undef, %.lr.ph.preheader.new ], [ %.1.1, %29 ]
  %.01216 = phi i32 [ 32767, %.lr.ph.preheader.new ], [ %.113.1, %29 ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %29 ]
  %15 = getelementptr inbounds i32, ptr %1, i64 %indvars.iv
  %16 = load i32, ptr %15, align 4, !tbaa !11
  %.not = icmp eq i32 %16, 0
  br i1 %.not, label %17, label %.lr.ph.1

17:                                               ; preds = %.lr.ph
  %18 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %19 = load i32, ptr %18, align 4, !tbaa !11
  %20 = icmp slt i32 %19, %.01216
  %spec.select = tail call i32 @llvm.smin.i32(i32 %19, i32 %.01216)
  %21 = trunc nuw nsw i64 %indvars.iv to i32
  %spec.select15 = select i1 %20, i32 %21, i32 %.01117
  br label %.lr.ph.1

.lr.ph.1:                                         ; preds = %17, %.lr.ph
  %.113 = phi i32 [ %.01216, %.lr.ph ], [ %spec.select, %17 ]
  %.1 = phi i32 [ %.01117, %.lr.ph ], [ %spec.select15, %17 ]
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %22 = getelementptr inbounds i32, ptr %1, i64 %indvars.iv.next
  %23 = load i32, ptr %22, align 4, !tbaa !11
  %.not.1 = icmp eq i32 %23, 0
  br i1 %.not.1, label %24, label %29

24:                                               ; preds = %.lr.ph.1
  %25 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.next
  %26 = load i32, ptr %25, align 4, !tbaa !11
  %27 = icmp slt i32 %26, %.113
  %spec.select.1 = tail call i32 @llvm.smin.i32(i32 %26, i32 %.113)
  %28 = trunc nuw nsw i64 %indvars.iv.next to i32
  %spec.select15.1 = select i1 %27, i32 %28, i32 %.1
  br label %29

29:                                               ; preds = %24, %.lr.ph.1
  %.113.1 = phi i32 [ %.113, %.lr.ph.1 ], [ %spec.select.1, %24 ]
  %.1.1 = phi i32 [ %.1, %.lr.ph.1 ], [ %spec.select15.1, %24 ]
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !12
}

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

attributes #0 = { nofree norecurse nosync nounwind 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, !10, i64 16}
!6 = !{!"Graph", !7, i64 0, !7, i64 8, !10, i64 16, !10, i64 20}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!10, !10, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass