; LLVM IR from LeetCode-in-C/LeetCode-in-C :: src/main/c/g0001_0100/s0011_container_with_most_water (Solution)

; 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 @maxArea(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 -1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %9 = load i32, ptr %4, align 4, !tbaa !9
  %10 = sub nsw i32 %9, 1
  store i32 %10, ptr %7, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %72, %2
  %12 = load i32, ptr %6, align 4, !tbaa !9
  %13 = load i32, ptr %7, align 4, !tbaa !9
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %15, label %73

15:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds i32, ptr %16, i64 %18
  %20 = load i32, ptr %19, align 4, !tbaa !9
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = load i32, ptr %7, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds i32, ptr %21, i64 %23
  %25 = load i32, ptr %24, align 4, !tbaa !9
  %26 = icmp slt i32 %20, %25
  br i1 %26, label %27, label %37

27:                                               ; preds = %15
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = load i32, ptr %6, 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
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = load i32, ptr %6, align 4, !tbaa !9
  %35 = sub nsw i32 %33, %34
  %36 = mul nsw i32 %32, %35
  br label %47

37:                                               ; preds = %15
  %38 = load ptr, ptr %3, align 8, !tbaa !5
  %39 = load i32, ptr %7, align 4, !tbaa !9
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds i32, ptr %38, i64 %40
  %42 = load i32, ptr %41, align 4, !tbaa !9
  %43 = load i32, ptr %7, align 4, !tbaa !9
  %44 = load i32, ptr %6, align 4, !tbaa !9
  %45 = sub nsw i32 %43, %44
  %46 = mul nsw i32 %42, %45
  br label %47

47:                                               ; preds = %37, %27
  %48 = phi i32 [ %36, %27 ], [ %46, %37 ]
  store i32 %48, ptr %8, align 4, !tbaa !9
  %49 = load i32, ptr %8, align 4, !tbaa !9
  %50 = load i32, ptr %5, align 4, !tbaa !9
  %51 = icmp sgt i32 %49, %50
  br i1 %51, label %52, label %54

52:                                               ; preds = %47
  %53 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %53, ptr %5, align 4, !tbaa !9
  br label %54

54:                                               ; preds = %52, %47
  %55 = load ptr, ptr %3, align 8, !tbaa !5
  %56 = load i32, ptr %6, align 4, !tbaa !9
  %57 = sext i32 %56 to i64
  %58 = getelementptr inbounds i32, ptr %55, i64 %57
  %59 = load i32, ptr %58, align 4, !tbaa !9
  %60 = load ptr, ptr %3, align 8, !tbaa !5
  %61 = load i32, ptr %7, align 4, !tbaa !9
  %62 = sext i32 %61 to i64
  %63 = getelementptr inbounds i32, ptr %60, i64 %62
  %64 = load i32, ptr %63, align 4, !tbaa !9
  %65 = icmp slt i32 %59, %64
  br i1 %65, label %66, label %69

66:                                               ; preds = %54
  %67 = load i32, ptr %6, align 4, !tbaa !9
  %68 = add nsw i32 %67, 1
  store i32 %68, ptr %6, align 4, !tbaa !9
  br label %72

69:                                               ; preds = %54
  %70 = load i32, ptr %7, align 4, !tbaa !9
  %71 = add nsw i32 %70, -1
  store i32 %71, ptr %7, align 4, !tbaa !9
  br label %72

72:                                               ; preds = %69, %66
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %11, !llvm.loop !11

73:                                               ; preds = %11
  %74 = load i32, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %74
}

; 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: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local range(i32 -1, -2147483648) i32 @maxArea(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 1
  br i1 %3, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %4 = add nsw i32 %1, -1
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.033 = phi i32 [ %.1, %.lr.ph ], [ -1, %.lr.ph.preheader ]
  %.02432 = phi i32 [ %.125, %.lr.ph ], [ %4, %.lr.ph.preheader ]
  %.02631 = phi i32 [ %.127, %.lr.ph ], [ 0, %.lr.ph.preheader ]
  %5 = zext nneg i32 %.02631 to i64
  %6 = getelementptr inbounds i32, ptr %0, i64 %5
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = sext i32 %.02432 to i64
  %9 = getelementptr inbounds i32, ptr %0, i64 %8
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = icmp slt i32 %7, %10
  %12 = sub nsw i32 %.02432, %.02631
  %.v = tail call i32 @llvm.smin.i32(i32 %7, i32 %10)
  %13 = mul nsw i32 %.v, %12
  %.1 = tail call i32 @llvm.smax.i32(i32 %13, i32 %.033)
  %14 = zext i1 %11 to i32
  %.127 = add nuw nsw i32 %.02631, %14
  %not. = xor i1 %11, true
  %15 = sext i1 %not. to i32
  %.125 = add nsw i32 %.02432, %15
  %16 = icmp slt i32 %.127, %.125
  br i1 %16, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %2
  %.0.lcssa = phi i32 [ -1, %2 ], [ %.1, %.lr.ph ]
  ret i32 %.0.lcssa
}

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

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.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, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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