; 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"

; Function Attrs: nounwind uwtable
declare dso_local double @num(double noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local double @car(double noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local double @cdr(double noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @not(double noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local double @evlis(ptr noundef, ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local double @f_sub(ptr noundef %0, ptr noundef %1) #0 {
  %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 ptr, ptr %3, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = call double @evlis(ptr noundef %7, ptr noundef %8)
  store double %9, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %10 = load double, ptr %5, align 8, !tbaa !9
  %11 = call double @cdr(double noundef %10)
  %12 = call i32 @not(double noundef %11)
  %13 = icmp ne i32 %12, 0
  br i1 %13, label %14, label %18

14:                                               ; preds = %2
  %15 = load double, ptr %5, align 8, !tbaa !9
  %16 = call double @car(double noundef %15)
  %17 = fneg double %16
  br label %21

18:                                               ; preds = %2
  %19 = load double, ptr %5, align 8, !tbaa !9
  %20 = call double @car(double noundef %19)
  br label %21

21:                                               ; preds = %18, %14
  %22 = phi double [ %17, %14 ], [ %20, %18 ]
  store double %22, ptr %6, align 8, !tbaa !9
  br label %23

23:                                               ; preds = %29, %21
  %24 = load double, ptr %5, align 8, !tbaa !9
  %25 = call double @cdr(double noundef %24)
  store double %25, ptr %5, align 8, !tbaa !9
  %26 = call i32 @not(double noundef %25)
  %27 = icmp ne i32 %26, 0
  %28 = xor i1 %27, true
  br i1 %28, label %29, label %34

29:                                               ; preds = %23
  %30 = load double, ptr %5, align 8, !tbaa !9
  %31 = call double @car(double noundef %30)
  %32 = load double, ptr %6, align 8, !tbaa !9
  %33 = fsub double %32, %31
  store double %33, ptr %6, align 8, !tbaa !9
  br label %23, !llvm.loop !11

34:                                               ; preds = %23
  %35 = load double, ptr %6, align 8, !tbaa !9
  %36 = call double @num(double noundef %35)
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret double %36
}

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = distinct !{!11, !12}
!12 = !{!"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: nounwind uwtable
declare dso_local double @num(double noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local double @car(double noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local double @cdr(double noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @not(double noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local double @evlis(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local double @f_sub(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = tail call double @evlis(ptr noundef %0, ptr noundef %1)
  %4 = tail call double @cdr(double noundef %3)
  %5 = tail call i32 @not(double noundef %4)
  %.not = icmp eq i32 %5, 0
  %6 = tail call double @car(double noundef %3)
  %7 = fneg double %6
  %8 = select i1 %.not, double %6, double %7
  %9 = tail call double @cdr(double noundef %3)
  %10 = tail call i32 @not(double noundef %9)
  %.not1011 = icmp eq i32 %10, 0
  br i1 %.not1011, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %.lr.ph
  %11 = phi double [ %14, %.lr.ph ], [ %9, %2 ]
  %.012 = phi double [ %13, %.lr.ph ], [ %8, %2 ]
  %12 = tail call double @car(double noundef %11)
  %13 = fsub double %.012, %12
  %14 = tail call double @cdr(double noundef %11)
  %15 = tail call i32 @not(double noundef %14)
  %.not10 = icmp eq i32 %15, 0
  br i1 %.not10, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %2
  %.0.lcssa = phi double [ %8, %2 ], [ %13, %.lr.ph ]
  %16 = tail call double @num(double noundef %.0.lcssa)
  ret double %16
}

attributes #0 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass