; LLVM IR from Slingshot-Physics/slingshot-community :: common/math/src/heap_matrix.ll (ZNK10HeapMatrix6hasNanEv)

; 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.HeapMatrix = type { i32, i32, i32, i32, i32, [12 x i8], ptr, [8 x i8] }

; 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 noundef zeroext i1 @_ZNK10HeapMatrix6hasNanEv(ptr noundef nonnull align 16 dereferenceable(40) %0) #1 align 2 {
  %2 = alloca i1, align 1
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %23, %1
  %8 = load i32, ptr %4, align 4, !tbaa !9
  %9 = getelementptr inbounds %class.HeapMatrix, ptr %6, i32 0, i32 4
  %10 = load i32, ptr %9, align 16, !tbaa !11
  %11 = icmp ult i32 %8, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %7
  store i32 2, ptr %5, align 4
  br label %26

13:                                               ; preds = %7
  %14 = getelementptr inbounds %class.HeapMatrix, ptr %6, i32 0, i32 6
  %15 = load ptr, ptr %14, align 16, !tbaa !13
  %16 = load i32, ptr %4, align 4, !tbaa !9
  %17 = zext i32 %16 to i64
  %18 = getelementptr inbounds float, ptr %15, i64 %17
  %19 = load float, ptr %18, align 4, !tbaa !14
  %20 = call noundef zeroext i1 @_ZSt5isnanf(float noundef %19)
  br i1 %20, label %21, label %22

21:                                               ; preds = %13
  store i1 true, ptr %2, align 1
  store i32 1, ptr %5, align 4
  br label %26

22:                                               ; preds = %13
  br label %23

23:                                               ; preds = %22
  %24 = load i32, ptr %4, align 4, !tbaa !9
  %25 = add i32 %24, 1
  store i32 %25, ptr %4, align 4, !tbaa !9
  br label %7, !llvm.loop !16

26:                                               ; preds = %21, %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  %27 = load i32, ptr %5, align 4
  switch i32 %27, label %31 [
    i32 2, label %28
    i32 1, label %29
  ]

28:                                               ; preds = %26
  store i1 false, ptr %2, align 1
  br label %29

29:                                               ; preds = %28, %26
  %30 = load i1, ptr %2, align 1
  ret i1 %30

31:                                               ; preds = %26
  unreachable
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZSt5isnanf(float 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, !10, i64 16}
!12 = !{!"_ZTS10HeapMatrix", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !10, i64 16, !6, i64 32}
!13 = !{!12, !6, i64 32}
!14 = !{!15, !15, i64 0}
!15 = !{!"float", !7, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"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 noundef zeroext i1 @_ZNK10HeapMatrix6hasNanEv(ptr nocapture noundef nonnull readonly align 16 dereferenceable(40) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 16
  %3 = load i32, ptr %2, align 16, !tbaa !5
  %.not7.not = icmp eq i32 %3, 0
  br i1 %.not7.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 32
  br label %8

5:                                                ; preds = %8
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %6 = load i32, ptr %2, align 16, !tbaa !5
  %7 = zext i32 %6 to i64
  %.not = icmp ult i64 %indvars.iv.next, %7
  br i1 %.not, label %8, label %._crit_edge, !llvm.loop !11

8:                                                ; preds = %.lr.ph, %5
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %5 ]
  %9 = load ptr, ptr %4, align 16, !tbaa !13
  %10 = getelementptr inbounds float, ptr %9, i64 %indvars.iv
  %11 = load float, ptr %10, align 4, !tbaa !14
  %12 = tail call noundef zeroext i1 @_ZSt5isnanf(float noundef %11)
  br i1 %12, label %._crit_edge, label %5

._crit_edge:                                      ; preds = %5, %8, %1
  %.not.lcssa = phi i1 [ false, %1 ], [ %12, %8 ], [ %12, %5 ]
  ret i1 %.not.lcssa
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZSt5isnanf(float 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, !7, i64 16}
!6 = !{!"_ZTS10HeapMatrix", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !7, i64 16, !10, i64 32}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!6, !10, i64 32}
!14 = !{!15, !15, i64 0}
!15 = !{!"float", !8, i64 0}


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