; LLVM IR from KishanBGajera/2024-366-Days-Of-DSA :: Data Structures/Linear/Stack/Applications of Stack/Min Stack/C (main)

; 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 }
%struct.Stack = type { ptr, i32, i32 }

; Function Attrs: nounwind uwtable
declare dso_local void @push(ptr noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local void @pushToMinStack(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 0
  %7 = load ptr, ptr %6, align 8, !tbaa !11
  %8 = load i32, ptr %4, align 4, !tbaa !9
  call void @push(ptr noundef %7, i32 noundef %8)
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.MinStack, ptr %9, i32 0, i32 1
  %11 = load ptr, ptr %10, align 8, !tbaa !13
  %12 = getelementptr inbounds %struct.Stack, ptr %11, i32 0, i32 2
  %13 = load i32, ptr %12, align 4, !tbaa !14
  %14 = icmp eq i32 %13, -1
  br i1 %14, label %31, label %15

15:                                               ; preds = %2
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.MinStack, ptr %16, i32 0, i32 1
  %18 = load ptr, ptr %17, align 8, !tbaa !13
  %19 = getelementptr inbounds %struct.Stack, ptr %18, i32 0, i32 0
  %20 = load ptr, ptr %19, align 8, !tbaa !16
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.MinStack, ptr %21, i32 0, i32 1
  %23 = load ptr, ptr %22, align 8, !tbaa !13
  %24 = getelementptr inbounds %struct.Stack, ptr %23, i32 0, i32 2
  %25 = load i32, ptr %24, align 4, !tbaa !14
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds i32, ptr %20, i64 %26
  %28 = load i32, ptr %27, align 4, !tbaa !9
  %29 = load i32, ptr %4, align 4, !tbaa !9
  %30 = icmp sgt i32 %28, %29
  br i1 %30, label %31, label %36

31:                                               ; preds = %15, %2
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.MinStack, ptr %32, i32 0, i32 1
  %34 = load ptr, ptr %33, align 8, !tbaa !13
  %35 = load i32, ptr %4, align 4, !tbaa !9
  call void @push(ptr noundef %34, i32 noundef %35)
  br label %36

36:                                               ; preds = %31, %15
  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, !6, i64 0}
!12 = !{!"MinStack", !6, i64 0, !6, i64 8}
!13 = !{!12, !6, i64 8}
!14 = !{!15, !10, i64 12}
!15 = !{!"Stack", !6, i64 0, !10, i64 8, !10, i64 12}
!16 = !{!15, !6, i64 0}


; 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 void @push(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @pushToMinStack(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  tail call void @push(ptr noundef %3, i32 noundef %1)
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !10
  %6 = getelementptr inbounds i8, ptr %5, i64 12
  %7 = load i32, ptr %6, align 4, !tbaa !11
  %8 = icmp eq i32 %7, -1
  br i1 %8, label %15, label %9

9:                                                ; preds = %2
  %10 = load ptr, ptr %5, align 8, !tbaa !14
  %11 = sext i32 %7 to i64
  %12 = getelementptr inbounds i32, ptr %10, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !15
  %14 = icmp sgt i32 %13, %1
  br i1 %14, label %15, label %16

15:                                               ; preds = %9, %2
  tail call void @push(ptr noundef nonnull %5, i32 noundef %1)
  br label %16

16:                                               ; preds = %15, %9
  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, !7, i64 0}
!6 = !{!"MinStack", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 8}
!11 = !{!12, !13, i64 12}
!12 = !{!"Stack", !7, i64 0, !13, i64 8, !13, i64 12}
!13 = !{!"int", !8, i64 0}
!14 = !{!12, !7, i64 0}
!15 = !{!13, !13, i64 0}


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