; LLVM IR from stonne-simulator/omega :: omega-code/stonne/src/utility.ll (Z21generatePrunnedMatrixPKfjf)

; 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"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.29 = external hidden unnamed_addr constant [14 x i8], align 1

; 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: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #1

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_Z21generatePrunnedMatrixPKfjf(ptr noundef %0, i32 noundef %1, float noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca float, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca ptr, align 8
  %13 = alloca float, align 4
  %14 = alloca i32, align 4
  %15 = alloca float, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store float %2, ptr %6, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #7
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = zext i32 %16 to i64
  %18 = call { i64, i1 } @llvm.umul.with.overflow.i64(i64 %17, i64 4)
  %19 = extractvalue { i64, i1 } %18, 1
  %20 = extractvalue { i64, i1 } %18, 0
  %21 = select i1 %19, i64 -1, i64 %20
  %22 = call noalias noundef nonnull ptr @_Znam(i64 noundef %21) #8
  store ptr %22, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #7
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %23

23:                                               ; preds = %39, %3
  %24 = load i32, ptr %8, align 4, !tbaa !9
  %25 = load i32, ptr %5, align 4, !tbaa !9
  %26 = icmp ult i32 %24, %25
  br i1 %26, label %28, label %27

27:                                               ; preds = %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #7
  br label %42

28:                                               ; preds = %23
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = load i32, ptr %8, align 4, !tbaa !9
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds float, ptr %29, i64 %31
  %33 = load float, ptr %32, align 4, !tbaa !11
  %34 = call noundef float @_ZSt4fabsf(float noundef %33)
  %35 = load ptr, ptr %7, align 8, !tbaa !5
  %36 = load i32, ptr %8, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds float, ptr %35, i64 %37
  store float %34, ptr %38, align 4, !tbaa !11
  br label %39

39:                                               ; preds = %28
  %40 = load i32, ptr %8, align 4, !tbaa !9
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %8, align 4, !tbaa !9
  br label %23, !llvm.loop !13

42:                                               ; preds = %27
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #7
  %43 = load i32, ptr %5, align 4, !tbaa !9
  %44 = uitofp i32 %43 to float
  %45 = load float, ptr %6, align 4, !tbaa !11
  %46 = fmul float %44, %45
  %47 = fptosi float %46 to i32
  store i32 %47, ptr %9, align 4, !tbaa !9
  %48 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.29)
  %49 = load i32, ptr %9, align 4, !tbaa !9
  %50 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %48, i32 noundef %49)
  %51 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %50, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #7
  %52 = load ptr, ptr %7, align 8, !tbaa !5
  store ptr %52, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #7
  %53 = load ptr, ptr %10, align 8, !tbaa !5
  %54 = load i32, ptr %5, align 4, !tbaa !9
  %55 = zext i32 %54 to i64
  %56 = getelementptr inbounds float, ptr %53, i64 %55
  store ptr %56, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #7
  %57 = load ptr, ptr %10, align 8, !tbaa !5
  %58 = load i32, ptr %9, align 4, !tbaa !9
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds float, ptr %57, i64 %59
  store ptr %60, ptr %12, align 8, !tbaa !5
  %61 = load ptr, ptr %10, align 8, !tbaa !5
  %62 = load ptr, ptr %12, align 8, !tbaa !5
  %63 = load ptr, ptr %11, align 8, !tbaa !5
  call void @_ZSt11nth_elementIPfEvT_S1_S1_(ptr noundef %61, ptr noundef %62, ptr noundef %63)
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #7
  %64 = load ptr, ptr %7, align 8, !tbaa !5
  %65 = load i32, ptr %9, align 4, !tbaa !9
  %66 = sext i32 %65 to i64
  %67 = getelementptr inbounds float, ptr %64, i64 %66
  %68 = load float, ptr %67, align 4, !tbaa !11
  store float %68, ptr %13, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #7
  store i32 0, ptr %14, align 4, !tbaa !9
  br label %69

69:                                               ; preds = %100, %42
  %70 = load i32, ptr %14, align 4, !tbaa !9
  %71 = load i32, ptr %5, align 4, !tbaa !9
  %72 = icmp ult i32 %70, %71
  br i1 %72, label %74, label %73

73:                                               ; preds = %69
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #7
  br label %103

74:                                               ; preds = %69
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #7
  %75 = load ptr, ptr %4, align 8, !tbaa !5
  %76 = load i32, ptr %14, align 4, !tbaa !9
  %77 = sext i32 %76 to i64
  %78 = getelementptr inbounds float, ptr %75, i64 %77
  %79 = load float, ptr %78, align 4, !tbaa !11
  %80 = call noundef float @_ZSt4fabsf(float noundef %79)
  store float %80, ptr %15, align 4, !tbaa !11
  %81 = load float, ptr %15, align 4, !tbaa !11
  %82 = load float, ptr %13, align 4, !tbaa !11
  %83 = fcmp olt float %81, %82
  br i1 %83, label %84, label %89

84:                                               ; preds = %74
  %85 = load ptr, ptr %7, align 8, !tbaa !5
  %86 = load i32, ptr %14, align 4, !tbaa !9
  %87 = sext i32 %86 to i64
  %88 = getelementptr inbounds float, ptr %85, i64 %87
  store float 0.000000e+00, ptr %88, align 4, !tbaa !11
  br label %99

89:                                               ; preds = %74
  %90 = load ptr, ptr %4, align 8, !tbaa !5
  %91 = load i32, ptr %14, align 4, !tbaa !9
  %92 = sext i32 %91 to i64
  %93 = getelementptr inbounds float, ptr %90, i64 %92
  %94 = load float, ptr %93, align 4, !tbaa !11
  %95 = load ptr, ptr %7, align 8, !tbaa !5
  %96 = load i32, ptr %14, align 4, !tbaa !9
  %97 = sext i32 %96 to i64
  %98 = getelementptr inbounds float, ptr %95, i64 %97
  store float %94, ptr %98, align 4, !tbaa !11
  br label %99

99:                                               ; preds = %89, %84
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #7
  br label %100

100:                                              ; preds = %99
  %101 = load i32, ptr %14, align 4, !tbaa !9
  %102 = add nsw i32 %101, 1
  store i32 %102, ptr %14, align 4, !tbaa !9
  br label %69, !llvm.loop !15

103:                                              ; preds = %73
  %104 = load ptr, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #7
  ret ptr %104
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare { i64, i1 } @llvm.umul.with.overflow.i64(i64, i64) #3

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) #4

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef float @_ZSt4fabsf(float noundef) #5

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #6

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt11nth_elementIPfEvT_S1_S1_(ptr noundef, ptr noundef, ptr noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { nobuiltin allocsize(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 #5 = { 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 #6 = { "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 #7 = { nounwind }
attributes #8 = { builtin allocsize(0) }

!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 = !{!"float", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.29 = external hidden unnamed_addr constant [14 x i8], align 1

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull ptr @_Z21generatePrunnedMatrixPKfjf(ptr nocapture noundef readonly %0, i32 noundef %1, float noundef %2) local_unnamed_addr #1 {
  %4 = zext i32 %1 to i64
  %5 = shl nuw nsw i64 %4, 2
  %6 = tail call noalias noundef nonnull ptr @_Znam(i64 noundef %5) #5
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %3
  %7 = uitofp i32 %1 to float
  %8 = fmul float %7, %2
  %9 = fptosi float %8 to i32
  %10 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.29)
  %11 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %10, i32 noundef %9)
  %12 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %11, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %13 = getelementptr inbounds float, ptr %6, i64 %4
  %14 = sext i32 %9 to i64
  %15 = getelementptr inbounds float, ptr %6, i64 %14
  tail call void @_ZSt11nth_elementIPfEvT_S1_S1_(ptr noundef nonnull %6, ptr noundef nonnull %15, ptr noundef nonnull %13)
  %16 = load float, ptr %15, align 4, !tbaa !5
  br i1 %.not, label %._crit_edge40, label %.lr.ph39

.lr.ph:                                           ; preds = %3, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %3 ]
  %17 = getelementptr inbounds float, ptr %0, i64 %indvars.iv
  %18 = load float, ptr %17, align 4, !tbaa !5
  %19 = tail call noundef float @_ZSt4fabsf(float noundef %18)
  %20 = getelementptr inbounds float, ptr %6, i64 %indvars.iv
  store float %19, ptr %20, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %4
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge40:                                    ; preds = %27, %._crit_edge
  ret ptr %6

.lr.ph39:                                         ; preds = %._crit_edge, %27
  %indvars.iv43 = phi i64 [ %indvars.iv.next44, %27 ], [ 0, %._crit_edge ]
  %21 = getelementptr inbounds float, ptr %0, i64 %indvars.iv43
  %22 = load float, ptr %21, align 4, !tbaa !5
  %23 = tail call noundef float @_ZSt4fabsf(float noundef %22)
  %24 = fcmp olt float %23, %16
  br i1 %24, label %27, label %25

25:                                               ; preds = %.lr.ph39
  %26 = load float, ptr %21, align 4, !tbaa !5
  br label %27

27:                                               ; preds = %.lr.ph39, %25
  %.sink = phi float [ %26, %25 ], [ 0.000000e+00, %.lr.ph39 ]
  %28 = getelementptr inbounds float, ptr %6, i64 %indvars.iv43
  store float %.sink, ptr %28, align 4
  %indvars.iv.next44 = add nuw nsw i64 %indvars.iv43, 1
  %exitcond47.not = icmp eq i64 %indvars.iv.next44, %4
  br i1 %exitcond47.not, label %._crit_edge40, label %.lr.ph39, !llvm.loop !11
}

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) local_unnamed_addr #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef float @_ZSt4fabsf(float noundef) local_unnamed_addr #3

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #4

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt11nth_elementIPfEvT_S1_S1_(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

attributes #0 = { inlinehint 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 #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 = { nobuiltin allocsize(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 = { 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 #4 = { "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 #5 = { builtin allocsize(0) }

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


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