; LLVM IR from Robert-van-Engelen/lisp-cheney :: src (lisp-cheney)

; 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"

@NIL = external dso_local global i64, align 8
@nil = external dso_local global double, align 8

; 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
declare dso_local double @car(double noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local double @cdr(double noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @not(double noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local void @var(i32 noundef, ...) #1

; Function Attrs: nounwind uwtable
declare dso_local double @ret(i32 noundef, double noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local double @eval(double noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local double @f_while(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca double, align 8
  %6 = alloca double, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %7 = load double, ptr @nil, align 8, !tbaa !9
  store double %7, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %8 = load double, ptr @nil, align 8, !tbaa !9
  store double %8, ptr %6, align 8, !tbaa !9
  call void (i32, ...) @var(i32 noundef 2, ptr noundef %5, ptr noundef %6)
  br label %9

9:                                                ; preds = %35, %2
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = load double, ptr %10, align 8, !tbaa !9
  %12 = call double @car(double noundef %11)
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = call double @eval(double noundef %12, ptr noundef %13)
  %15 = call i32 @not(double noundef %14)
  %16 = icmp ne i32 %15, 0
  %17 = xor i1 %16, true
  br i1 %17, label %18, label %36

18:                                               ; preds = %9
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = load double, ptr %19, align 8, !tbaa !9
  %21 = call double @cdr(double noundef %20)
  store double %21, ptr %5, align 8, !tbaa !9
  br label %22

22:                                               ; preds = %32, %18
  %23 = load i64, ptr %5, align 8, !tbaa !11
  %24 = lshr i64 %23, 48
  %25 = load i64, ptr @NIL, align 8, !tbaa !11
  %26 = icmp ne i64 %24, %25
  br i1 %26, label %27, label %35

27:                                               ; preds = %22
  %28 = load double, ptr %5, align 8, !tbaa !9
  %29 = call double @car(double noundef %28)
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = call double @eval(double noundef %29, ptr noundef %30)
  store double %31, ptr %6, align 8, !tbaa !9
  br label %32

32:                                               ; preds = %27
  %33 = load double, ptr %5, align 8, !tbaa !9
  %34 = call double @cdr(double noundef %33)
  store double %34, ptr %5, align 8, !tbaa !9
  br label %22, !llvm.loop !13

35:                                               ; preds = %22
  br label %9, !llvm.loop !15

36:                                               ; preds = %9
  %37 = load double, ptr %6, align 8, !tbaa !9
  %38 = call double @ret(i32 noundef 2, double noundef %37)
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret double %38
}

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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !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"

@NIL = external dso_local local_unnamed_addr global i64, align 8
@nil = external dso_local local_unnamed_addr global double, align 8

; 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: nounwind uwtable
declare dso_local double @car(double noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local double @cdr(double noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @not(double noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local void @var(i32 noundef, ...) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local double @ret(i32 noundef, double noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local double @eval(double noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local double @f_while(ptr nocapture noundef readonly %0, ptr noundef %1) local_unnamed_addr #1 {
  %3 = alloca double, align 8
  %4 = alloca double, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #2
  %5 = load double, ptr @nil, align 8, !tbaa !5
  store double %5, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #2
  store double %5, ptr %4, align 8, !tbaa !5
  call void (i32, ...) @var(i32 noundef 2, ptr noundef nonnull %3, ptr noundef nonnull %4)
  %6 = load double, ptr %0, align 8, !tbaa !5
  %7 = call double @car(double noundef %6)
  %8 = call double @eval(double noundef %7, ptr noundef %1)
  %9 = call i32 @not(double noundef %8)
  %.not8 = icmp eq i32 %9, 0
  br i1 %.not8, label %.lr.ph9, label %._crit_edge

.loopexit:                                        ; preds = %.lr.ph, %.lr.ph9
  %10 = load double, ptr %0, align 8, !tbaa !5
  %11 = call double @car(double noundef %10)
  %12 = call double @eval(double noundef %11, ptr noundef %1)
  %13 = call i32 @not(double noundef %12)
  %.not = icmp eq i32 %13, 0
  br i1 %.not, label %.lr.ph9, label %._crit_edge, !llvm.loop !9

.lr.ph9:                                          ; preds = %2, %.loopexit
  %14 = load double, ptr %0, align 8, !tbaa !5
  %15 = call double @cdr(double noundef %14)
  store double %15, ptr %3, align 8, !tbaa !5
  %.cast5 = bitcast double %15 to i64
  %16 = lshr i64 %.cast5, 48
  %17 = load i64, ptr @NIL, align 8, !tbaa !11
  %.not46 = icmp eq i64 %16, %17
  br i1 %.not46, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph9, %.lr.ph
  %storemerge7 = phi double [ %21, %.lr.ph ], [ %15, %.lr.ph9 ]
  %18 = call double @car(double noundef %storemerge7)
  %19 = call double @eval(double noundef %18, ptr noundef %1)
  store double %19, ptr %4, align 8, !tbaa !5
  %20 = load double, ptr %3, align 8, !tbaa !5
  %21 = call double @cdr(double noundef %20)
  store double %21, ptr %3, align 8, !tbaa !5
  %.cast = bitcast double %21 to i64
  %22 = lshr i64 %.cast, 48
  %23 = load i64, ptr @NIL, align 8, !tbaa !11
  %.not4 = icmp eq i64 %22, %23
  br i1 %.not4, label %.loopexit, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %.loopexit, %2
  %24 = load double, ptr %4, align 8, !tbaa !5
  %25 = call double @ret(i32 noundef 2, double noundef %24)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #2
  ret double %25
}

attributes #0 = { mustprogress 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !10}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass