; LLVM IR from CLASS-SZ/class_sz :: class-sz/tools (r8lib)

; 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: nounwind uwtable
define dso_local i32 @r8mat_in_01(i32 noundef %0, i32 noundef %1, ptr noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %48, %3
  %12 = load i32, ptr %9, align 4, !tbaa !5
  %13 = load i32, ptr %6, align 4, !tbaa !5
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %15, label %51

15:                                               ; preds = %11
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %44, %15
  %17 = load i32, ptr %8, align 4, !tbaa !5
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = icmp slt i32 %17, %18
  br i1 %19, label %20, label %47

20:                                               ; preds = %16
  %21 = load ptr, ptr %7, align 8, !tbaa !9
  %22 = load i32, ptr %8, align 4, !tbaa !5
  %23 = load i32, ptr %9, align 4, !tbaa !5
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = mul nsw i32 %23, %24
  %26 = add nsw i32 %22, %25
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds double, ptr %21, i64 %27
  %29 = load double, ptr %28, align 8, !tbaa !11
  %30 = fcmp olt double %29, 0.000000e+00
  br i1 %30, label %42, label %31

31:                                               ; preds = %20
  %32 = load ptr, ptr %7, align 8, !tbaa !9
  %33 = load i32, ptr %8, align 4, !tbaa !5
  %34 = load i32, ptr %9, align 4, !tbaa !5
  %35 = load i32, ptr %5, align 4, !tbaa !5
  %36 = mul nsw i32 %34, %35
  %37 = add nsw i32 %33, %36
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds double, ptr %32, i64 %38
  %40 = load double, ptr %39, align 8, !tbaa !11
  %41 = fcmp olt double 1.000000e+00, %40
  br i1 %41, label %42, label %43

42:                                               ; preds = %31, %20
  store i32 0, ptr %4, align 4
  store i32 1, ptr %10, align 4
  br label %52

43:                                               ; preds = %31
  br label %44

44:                                               ; preds = %43
  %45 = load i32, ptr %8, align 4, !tbaa !5
  %46 = add nsw i32 %45, 1
  store i32 %46, ptr %8, align 4, !tbaa !5
  br label %16, !llvm.loop !13

47:                                               ; preds = %16
  br label %48

48:                                               ; preds = %47
  %49 = load i32, ptr %9, align 4, !tbaa !5
  %50 = add nsw i32 %49, 1
  store i32 %50, ptr %9, align 4, !tbaa !5
  br label %11, !llvm.loop !15

51:                                               ; preds = %11
  store i32 1, ptr %4, align 4
  store i32 1, ptr %10, align 4
  br label %52

52:                                               ; preds = %51, %42
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %53 = load i32, ptr %4, align 4
  ret i32 %53
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !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"

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local range(i32 0, 2) i32 @r8mat_in_01(i32 noundef %0, i32 noundef %1, ptr nocapture noundef readonly %2) local_unnamed_addr #0 {
  %4 = icmp sgt i32 %1, 0
  %5 = icmp sgt i32 %0, 0
  %or.cond = and i1 %4, %5
  br i1 %or.cond, label %.preheader.us.preheader, label %.loopexit

.preheader.us.preheader:                          ; preds = %3
  %6 = zext nneg i32 %0 to i64
  %wide.trip.count27 = zext nneg i32 %1 to i64
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge.us
  %indvars.iv24 = phi i64 [ 0, %.preheader.us.preheader ], [ %indvars.iv.next25, %._crit_edge.us ]
  %7 = mul nuw nsw i64 %indvars.iv24, %6
  %invariant.gep = getelementptr inbounds double, ptr %2, i64 %7
  br label %9

8:                                                ; preds = %9
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %6
  br i1 %exitcond.not, label %._crit_edge.us, label %9, !llvm.loop !5

9:                                                ; preds = %.preheader.us, %8
  %indvars.iv = phi i64 [ 0, %.preheader.us ], [ %indvars.iv.next, %8 ]
  %gep = getelementptr inbounds double, ptr %invariant.gep, i64 %indvars.iv
  %10 = load double, ptr %gep, align 8, !tbaa !7
  %11 = fcmp olt double %10, 0.000000e+00
  %12 = fcmp ogt double %10, 1.000000e+00
  %or.cond.us = or i1 %11, %12
  br i1 %or.cond.us, label %.loopexit, label %8

._crit_edge.us:                                   ; preds = %8
  %indvars.iv.next25 = add nuw nsw i64 %indvars.iv24, 1
  %exitcond28.not = icmp eq i64 %indvars.iv.next25, %wide.trip.count27
  br i1 %exitcond28.not, label %.loopexit, label %.preheader.us, !llvm.loop !11

.loopexit:                                        ; preds = %._crit_edge.us, %9, %3
  %.015 = phi i32 [ 1, %3 ], [ 0, %9 ], [ 1, %._crit_edge.us ]
  ret i32 %.015
}

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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!8, !8, i64 0}
!8 = !{!"double", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = distinct !{!11, !6}


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