; LLVM IR from ERGO-Code/HiGHS :: src/util/HighsSort.ll (Z11maxHeapsortPdPii)

; 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: 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: mustprogress uwtable
define dso_local void @_Z11maxHeapsortPdPii(ptr noundef %0, ptr noundef %1, i32 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca double, align 8
  %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 i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %10 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %10, ptr %8, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %49, %3
  %12 = load i32, ptr %8, align 4, !tbaa !9
  %13 = icmp sge i32 %12, 2
  br i1 %13, label %14, label %52

14:                                               ; preds = %11
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = load i32, ptr %8, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds double, ptr %15, i64 %17
  %19 = load double, ptr %18, align 8, !tbaa !11
  store double %19, ptr %7, align 8, !tbaa !11
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds double, ptr %20, i64 1
  %22 = load double, ptr %21, align 8, !tbaa !11
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = load i32, ptr %8, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds double, ptr %23, i64 %25
  store double %22, ptr %26, align 8, !tbaa !11
  %27 = load double, ptr %7, align 8, !tbaa !11
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds double, ptr %28, i64 1
  store double %27, ptr %29, align 8, !tbaa !11
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = load i32, ptr %8, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds i32, ptr %30, i64 %32
  %34 = load i32, ptr %33, align 4, !tbaa !9
  store i32 %34, ptr %9, align 4, !tbaa !9
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  %36 = getelementptr inbounds i32, ptr %35, i64 1
  %37 = load i32, ptr %36, align 4, !tbaa !9
  %38 = load ptr, ptr %5, align 8, !tbaa !5
  %39 = load i32, ptr %8, align 4, !tbaa !9
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds i32, ptr %38, i64 %40
  store i32 %37, ptr %41, align 4, !tbaa !9
  %42 = load i32, ptr %9, align 4, !tbaa !9
  %43 = load ptr, ptr %5, align 8, !tbaa !5
  %44 = getelementptr inbounds i32, ptr %43, i64 1
  store i32 %42, ptr %44, align 4, !tbaa !9
  %45 = load ptr, ptr %4, align 8, !tbaa !5
  %46 = load ptr, ptr %5, align 8, !tbaa !5
  %47 = load i32, ptr %8, align 4, !tbaa !9
  %48 = sub nsw i32 %47, 1
  call void @_Z10maxHeapifyPdPiii(ptr noundef %45, ptr noundef %46, i32 noundef 1, i32 noundef %48)
  br label %49

49:                                               ; preds = %14
  %50 = load i32, ptr %8, align 4, !tbaa !9
  %51 = add nsw i32 %50, -1
  store i32 %51, ptr %8, align 4, !tbaa !9
  br label %11, !llvm.loop !13

52:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z10maxHeapifyPdPiii(ptr noundef, ptr noundef, i32 noundef, i32 noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 = { mustprogress 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 #3 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!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: mustprogress nounwind uwtable
define dso_local void @_Z11maxHeapsortPdPii(ptr noundef %0, ptr noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = icmp sgt i32 %2, 1
  br i1 %4, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  %6 = getelementptr inbounds i8, ptr %1, i64 4
  %7 = zext nneg i32 %2 to i64
  br label %8

8:                                                ; preds = %.lr.ph, %8
  %indvars.iv = phi i64 [ %7, %.lr.ph ], [ %indvars.iv.next, %8 ]
  %9 = getelementptr inbounds double, ptr %0, i64 %indvars.iv
  %10 = load double, ptr %9, align 8, !tbaa !5
  %11 = load double, ptr %5, align 8, !tbaa !5
  store double %11, ptr %9, align 8, !tbaa !5
  store double %10, ptr %5, align 8, !tbaa !5
  %12 = getelementptr inbounds i32, ptr %1, i64 %indvars.iv
  %13 = load i32, ptr %12, align 4, !tbaa !9
  %14 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %14, ptr %12, align 4, !tbaa !9
  store i32 %13, ptr %6, align 4, !tbaa !9
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %15 = trunc nuw nsw i64 %indvars.iv.next to i32
  tail call void @_Z10maxHeapifyPdPiii(ptr noundef %0, ptr noundef %1, i32 noundef 1, i32 noundef %15)
  %16 = icmp ugt i64 %indvars.iv, 2
  br i1 %16, label %8, label %._crit_edge, !llvm.loop !11

._crit_edge:                                      ; preds = %8, %3
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z10maxHeapifyPdPiii(ptr noundef, ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

attributes #0 = { mustprogress 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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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