; LLVM IR from ERGO-Code/HiGHS :: src/presolve/HPresolve.ll (ZNK8presolve9HPresolve15getMaxAbsColValEi)

; 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.HighsTripletListSlice = type { %class.HighsMatrixSlice.base.391, [4 x i8] }
%class.HighsMatrixSlice.base.391 = type <{ ptr, ptr, ptr, i32 }>
%"class.HighsMatrixSlice<HighsTripletListSlice>::iterator" = type <{ %class.HighsSliceNonzero, ptr, i32, [4 x i8] }>
%class.HighsSliceNonzero = type { ptr, ptr }

; 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 nounwind uwtable
declare dso_local noundef double @_ZNK17HighsSliceNonzero5valueEv(ptr noundef nonnull align 8 dereferenceable(16)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt3absd(double noundef) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK8presolve9HPresolve15getColumnVectorEi(ptr dead_on_unwind noalias writable sret(%struct.HighsTripletListSlice) align 8, ptr noundef nonnull align 8 dereferenceable(1720), i32 noundef) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE5beginEv(ptr dead_on_unwind noalias writable sret(%"class.HighsMatrixSlice<HighsTripletListSlice>::iterator") align 8, ptr noundef nonnull align 8 dereferenceable(28)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE3endEv(ptr dead_on_unwind noalias writable sret(%"class.HighsMatrixSlice<HighsTripletListSlice>::iterator") align 8, ptr noundef nonnull align 8 dereferenceable(28)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE8iteratorneERKS2_(ptr noundef nonnull align 8 dereferenceable(28), ptr noundef nonnull align 8 dereferenceable(28)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZN16HighsMatrixSliceI21HighsTripletListSliceE8iteratordeEv(ptr noundef nonnull align 8 dereferenceable(28)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(28) ptr @_ZN16HighsMatrixSliceI21HighsTripletListSliceE8iteratorppEv(ptr noundef nonnull align 8 dereferenceable(28)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef double @_ZNK8presolve9HPresolve15getMaxAbsColValEi(ptr noundef nonnull align 8 dereferenceable(1720) %0, i32 noundef %1) #3 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca double, align 8
  %6 = alloca ptr, align 8
  %7 = alloca %struct.HighsTripletListSlice, align 8
  %8 = alloca %"class.HighsMatrixSlice<HighsTripletListSlice>::iterator", align 8
  %9 = alloca %"class.HighsMatrixSlice<HighsTripletListSlice>::iterator", align 8
  %10 = alloca ptr, align 8
  %11 = alloca double, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %12 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  store double 0.000000e+00, ptr %5, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.start.p0(i64 32, ptr %7) #4
  %13 = load i32, ptr %4, align 4, !tbaa !9
  call void @_ZNK8presolve9HPresolve15getColumnVectorEi(ptr dead_on_unwind writable sret(%struct.HighsTripletListSlice) align 8 %7, ptr noundef nonnull align 8 dereferenceable(1720) %12, i32 noundef %13)
  store ptr %7, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 32, ptr %8) #4
  %14 = load ptr, ptr %6, align 8, !tbaa !5
  call void @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE5beginEv(ptr dead_on_unwind writable sret(%"class.HighsMatrixSlice<HighsTripletListSlice>::iterator") align 8 %8, ptr noundef nonnull align 8 dereferenceable(28) %14)
  call void @llvm.lifetime.start.p0(i64 32, ptr %9) #4
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  call void @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE3endEv(ptr dead_on_unwind writable sret(%"class.HighsMatrixSlice<HighsTripletListSlice>::iterator") align 8 %9, ptr noundef nonnull align 8 dereferenceable(28) %15)
  br label %16

16:                                               ; preds = %26, %2
  %17 = call noundef zeroext i1 @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE8iteratorneERKS2_(ptr noundef nonnull align 8 dereferenceable(28) %8, ptr noundef nonnull align 8 dereferenceable(28) %9)
  br i1 %17, label %19, label %18

18:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br label %28

19:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #4
  %20 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZN16HighsMatrixSliceI21HighsTripletListSliceE8iteratordeEv(ptr noundef nonnull align 8 dereferenceable(28) %8)
  store ptr %20, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  %21 = load ptr, ptr %10, align 8, !tbaa !5
  %22 = call noundef double @_ZNK17HighsSliceNonzero5valueEv(ptr noundef nonnull align 8 dereferenceable(16) %21)
  %23 = call noundef double @_ZSt3absd(double noundef %22)
  store double %23, ptr %11, align 8, !tbaa !11
  %24 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3maxIdERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %11, ptr noundef nonnull align 8 dereferenceable(8) %5)
  %25 = load double, ptr %24, align 8, !tbaa !11
  store double %25, ptr %5, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #4
  br label %26

26:                                               ; preds = %19
  %27 = call noundef nonnull align 8 dereferenceable(28) ptr @_ZN16HighsMatrixSliceI21HighsTripletListSliceE8iteratorppEv(ptr noundef nonnull align 8 dereferenceable(28) %8)
  br label %16

28:                                               ; preds = %18
  %29 = load double, ptr %5, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  ret double %29
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3maxIdERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { inlinehint 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 = { 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 #4 = { 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}


; 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"

%struct.HighsTripletListSlice = type { %class.HighsMatrixSlice.base.391, [4 x i8] }
%class.HighsMatrixSlice.base.391 = type <{ ptr, ptr, ptr, i32 }>
%"class.HighsMatrixSlice<HighsTripletListSlice>::iterator" = type <{ %class.HighsSliceNonzero, ptr, i32, [4 x i8] }>
%class.HighsSliceNonzero = type { ptr, ptr }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef double @_ZNK17HighsSliceNonzero5valueEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt3absd(double noundef) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK8presolve9HPresolve15getColumnVectorEi(ptr dead_on_unwind noalias writable sret(%struct.HighsTripletListSlice) align 8, ptr noundef nonnull align 8 dereferenceable(1720), i32 noundef) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE5beginEv(ptr dead_on_unwind noalias writable sret(%"class.HighsMatrixSlice<HighsTripletListSlice>::iterator") align 8, ptr noundef nonnull align 8 dereferenceable(28)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE3endEv(ptr dead_on_unwind noalias writable sret(%"class.HighsMatrixSlice<HighsTripletListSlice>::iterator") align 8, ptr noundef nonnull align 8 dereferenceable(28)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE8iteratorneERKS2_(ptr noundef nonnull align 8 dereferenceable(28), ptr noundef nonnull align 8 dereferenceable(28)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZN16HighsMatrixSliceI21HighsTripletListSliceE8iteratordeEv(ptr noundef nonnull align 8 dereferenceable(28)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(28) ptr @_ZN16HighsMatrixSliceI21HighsTripletListSliceE8iteratorppEv(ptr noundef nonnull align 8 dereferenceable(28)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef double @_ZNK8presolve9HPresolve15getMaxAbsColValEi(ptr noundef nonnull align 8 dereferenceable(1720) %0, i32 noundef %1) local_unnamed_addr #3 align 2 {
  %3 = alloca double, align 8
  %4 = alloca %struct.HighsTripletListSlice, align 8
  %5 = alloca %"class.HighsMatrixSlice<HighsTripletListSlice>::iterator", align 8
  %6 = alloca %"class.HighsMatrixSlice<HighsTripletListSlice>::iterator", align 8
  %7 = alloca double, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  store double 0.000000e+00, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #4
  call void @_ZNK8presolve9HPresolve15getColumnVectorEi(ptr dead_on_unwind nonnull writable sret(%struct.HighsTripletListSlice) align 8 %4, ptr noundef nonnull align 8 dereferenceable(1720) %0, i32 noundef %1)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %5) #4
  call void @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE5beginEv(ptr dead_on_unwind nonnull writable sret(%"class.HighsMatrixSlice<HighsTripletListSlice>::iterator") align 8 %5, ptr noundef nonnull align 8 dereferenceable(28) %4)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %6) #4
  call void @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE3endEv(ptr dead_on_unwind nonnull writable sret(%"class.HighsMatrixSlice<HighsTripletListSlice>::iterator") align 8 %6, ptr noundef nonnull align 8 dereferenceable(28) %4)
  %8 = call noundef zeroext i1 @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE8iteratorneERKS2_(ptr noundef nonnull align 8 dereferenceable(28) %5, ptr noundef nonnull align 8 dereferenceable(28) %6)
  br i1 %8, label %.lr.ph, label %._crit_edge

._crit_edge.loopexit:                             ; preds = %.lr.ph
  %.pre = load double, ptr %3, align 8, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %2
  %9 = phi double [ %.pre, %._crit_edge.loopexit ], [ 0.000000e+00, %2 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  ret double %9

.lr.ph:                                           ; preds = %2, %.lr.ph
  %10 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZN16HighsMatrixSliceI21HighsTripletListSliceE8iteratordeEv(ptr noundef nonnull align 8 dereferenceable(28) %5)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #4
  %11 = call noundef double @_ZNK17HighsSliceNonzero5valueEv(ptr noundef nonnull align 8 dereferenceable(16) %10)
  %12 = call noundef double @_ZSt3absd(double noundef %11)
  store double %12, ptr %7, align 8, !tbaa !5
  %13 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3maxIdERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %7, ptr noundef nonnull align 8 dereferenceable(8) %3)
  %14 = load double, ptr %13, align 8, !tbaa !5
  store double %14, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #4
  %15 = call noundef nonnull align 8 dereferenceable(28) ptr @_ZN16HighsMatrixSliceI21HighsTripletListSliceE8iteratorppEv(ptr noundef nonnull align 8 dereferenceable(28) %5)
  %16 = call noundef zeroext i1 @_ZNK16HighsMatrixSliceI21HighsTripletListSliceE8iteratorneERKS2_(ptr noundef nonnull align 8 dereferenceable(28) %5, ptr noundef nonnull align 8 dereferenceable(28) %6)
  br i1 %16, label %.lr.ph, label %._crit_edge.loopexit
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3maxIdERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { inlinehint 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 = { 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 #4 = { 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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass