; LLVM IR from lolosssss/leetcode :: c (155_min_stack)

; 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.MinStack = type { ptr, ptr, i32, i32, i32 }

; Function Attrs: nounwind uwtable
define dso_local void @minStackPush(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %5 = load ptr, ptr %3, align 8, !tbaa !5
  %6 = getelementptr inbounds %struct.MinStack, ptr %5, i32 0, i32 2
  %7 = load i32, ptr %6, align 8, !tbaa !11
  %8 = add nsw i32 %7, 1
  store i32 %8, ptr %6, align 8, !tbaa !11
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.MinStack, ptr %9, i32 0, i32 2
  %11 = load i32, ptr %10, align 8, !tbaa !11
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.MinStack, ptr %12, i32 0, i32 4
  %14 = load i32, ptr %13, align 8, !tbaa !13
  %15 = icmp sge i32 %11, %14
  br i1 %15, label %16, label %21

16:                                               ; preds = %2
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.MinStack, ptr %17, i32 0, i32 2
  %19 = load i32, ptr %18, align 8, !tbaa !11
  %20 = add nsw i32 %19, -1
  store i32 %20, ptr %18, align 8, !tbaa !11
  br label %58

21:                                               ; preds = %2
  %22 = load i32, ptr %4, align 4, !tbaa !9
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.MinStack, ptr %23, i32 0, i32 0
  %25 = load ptr, ptr %24, align 8, !tbaa !14
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.MinStack, ptr %26, i32 0, i32 2
  %28 = load i32, ptr %27, align 8, !tbaa !11
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds i32, ptr %25, i64 %29
  store i32 %22, ptr %30, align 4, !tbaa !9
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.MinStack, ptr %31, i32 0, i32 3
  %33 = load i32, ptr %32, align 4, !tbaa !15
  %34 = icmp slt i32 %33, 0
  br i1 %34, label %47, label %35

35:                                               ; preds = %21
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.MinStack, ptr %36, i32 0, i32 1
  %38 = load ptr, ptr %37, align 8, !tbaa !16
  %39 = load ptr, ptr %3, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.MinStack, ptr %39, i32 0, i32 3
  %41 = load i32, ptr %40, align 4, !tbaa !15
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds i32, ptr %38, i64 %42
  %44 = load i32, ptr %43, align 4, !tbaa !9
  %45 = load i32, ptr %4, align 4, !tbaa !9
  %46 = icmp sge i32 %44, %45
  br i1 %46, label %47, label %58

47:                                               ; preds = %35, %21
  %48 = load i32, ptr %4, align 4, !tbaa !9
  %49 = load ptr, ptr %3, align 8, !tbaa !5
  %50 = getelementptr inbounds %struct.MinStack, ptr %49, i32 0, i32 1
  %51 = load ptr, ptr %50, align 8, !tbaa !16
  %52 = load ptr, ptr %3, align 8, !tbaa !5
  %53 = getelementptr inbounds %struct.MinStack, ptr %52, i32 0, i32 3
  %54 = load i32, ptr %53, align 4, !tbaa !15
  %55 = add nsw i32 %54, 1
  store i32 %55, ptr %53, align 4, !tbaa !15
  %56 = sext i32 %55 to i64
  %57 = getelementptr inbounds i32, ptr %51, i64 %56
  store i32 %48, ptr %57, align 4, !tbaa !9
  br label %58

58:                                               ; preds = %47, %35, %16
  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" }

!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 = !{!"", !6, i64 0, !6, i64 8, !10, i64 16, !10, i64 20, !10, i64 24}
!13 = !{!12, !10, i64 24}
!14 = !{!12, !6, i64 0}
!15 = !{!12, !10, i64 20}
!16 = !{!12, !6, i64 8}


; 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(readwrite, inaccessiblemem: none) uwtable
define dso_local void @minStackPush(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load i32, ptr %3, align 8, !tbaa !5
  %5 = add nsw i32 %4, 1
  store i32 %5, ptr %3, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 24
  %7 = load i32, ptr %6, align 8, !tbaa !11
  %.not = icmp slt i32 %5, %7
  br i1 %.not, label %9, label %8

8:                                                ; preds = %2
  store i32 %4, ptr %3, align 8, !tbaa !5
  br label %23

9:                                                ; preds = %2
  %10 = load ptr, ptr %0, align 8, !tbaa !12
  %11 = sext i32 %5 to i64
  %12 = getelementptr inbounds i32, ptr %10, i64 %11
  store i32 %1, ptr %12, align 4, !tbaa !13
  %13 = getelementptr inbounds i8, ptr %0, i64 20
  %14 = load i32, ptr %13, align 4, !tbaa !14
  %15 = icmp slt i32 %14, 0
  %.phi.trans.insert = getelementptr inbounds i8, ptr %0, i64 8
  %.pre = load ptr, ptr %.phi.trans.insert, align 8, !tbaa !15
  br i1 %15, label %._crit_edge, label %16

16:                                               ; preds = %9
  %17 = zext nneg i32 %14 to i64
  %18 = getelementptr inbounds i32, ptr %.pre, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !13
  %.not14 = icmp slt i32 %19, %1
  br i1 %.not14, label %23, label %._crit_edge

._crit_edge:                                      ; preds = %9, %16
  %20 = add nsw i32 %14, 1
  store i32 %20, ptr %13, align 4, !tbaa !14
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds i32, ptr %.pre, i64 %21
  store i32 %1, ptr %22, align 4, !tbaa !13
  br label %23

23:                                               ; preds = %._crit_edge, %16, %8
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, inaccessiblemem: none) 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, !10, i64 16}
!6 = !{!"", !7, i64 0, !7, i64 8, !10, i64 16, !10, i64 20, !10, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !10, i64 24}
!12 = !{!6, !7, i64 0}
!13 = !{!10, !10, i64 0}
!14 = !{!6, !10, i64 20}
!15 = !{!6, !7, i64 8}


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