; 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 @r8_is_int(double noundef %0) #1 {
  %2 = alloca double, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store double %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 2147483647, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  %5 = load double, ptr %2, align 8, !tbaa !5
  %6 = fcmp olt double 0x41DFFFFFFFC00000, %5
  br i1 %6, label %7, label %8

7:                                                ; preds = %1
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %22

8:                                                ; preds = %1
  %9 = load double, ptr %2, align 8, !tbaa !5
  %10 = fcmp olt double %9, 0xC1DFFFFFFFC00000
  br i1 %10, label %11, label %12

11:                                               ; preds = %8
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %21

12:                                               ; preds = %8
  %13 = load double, ptr %2, align 8, !tbaa !5
  %14 = load double, ptr %2, align 8, !tbaa !5
  %15 = fptosi double %14 to i32
  %16 = sitofp i32 %15 to double
  %17 = fcmp oeq double %13, %16
  br i1 %17, label %18, label %19

18:                                               ; preds = %12
  store i32 1, ptr %4, align 4, !tbaa !9
  br label %20

19:                                               ; preds = %12
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %20

20:                                               ; preds = %19, %18
  br label %21

21:                                               ; preds = %20, %11
  br label %22

22:                                               ; preds = %21, %7
  %23 = load i32, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i32 %23
}

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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local range(i32 0, 2) i32 @r8_is_int(double noundef %0) local_unnamed_addr #0 {
  %2 = tail call double @llvm.fabs.f64(double %0)
  %or.cond = fcmp ule double %2, 0x41DFFFFFFFC00000
  %3 = fptosi double %0 to i32
  %4 = sitofp i32 %3 to double
  %5 = fcmp oeq double %4, %0
  %narrow = select i1 %or.cond, i1 %5, i1 false
  %.0 = zext i1 %narrow to i32
  ret i32 %.0
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fabs.f64(double) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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)"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass