; LLVM IR from Robert-van-Engelen/tinylisp :: src (tinylisp-commented)

; 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 @car(double noundef) #0

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

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

; Function Attrs: nounwind uwtable
declare dso_local i32 @let(double noundef) #0

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

; Function Attrs: nounwind uwtable
define dso_local double @f_leta(double noundef %0, double noundef %1) #0 {
  %3 = alloca double, align 8
  %4 = alloca double, align 8
  store double %0, ptr %3, align 8, !tbaa !5
  store double %1, ptr %4, align 8, !tbaa !5
  br label %5

5:                                                ; preds = %21, %2
  %6 = load double, ptr %3, align 8, !tbaa !5
  %7 = call i32 @let(double noundef %6)
  %8 = icmp ne i32 %7, 0
  br i1 %8, label %9, label %24

9:                                                ; preds = %5
  %10 = load double, ptr %3, align 8, !tbaa !5
  %11 = call double @car(double noundef %10)
  %12 = call double @car(double noundef %11)
  %13 = load double, ptr %3, align 8, !tbaa !5
  %14 = call double @car(double noundef %13)
  %15 = call double @cdr(double noundef %14)
  %16 = call double @car(double noundef %15)
  %17 = load double, ptr %4, align 8, !tbaa !5
  %18 = call double @eval(double noundef %16, double noundef %17)
  %19 = load double, ptr %4, align 8, !tbaa !5
  %20 = call double @pair(double noundef %12, double noundef %18, double noundef %19)
  store double %20, ptr %4, align 8, !tbaa !5
  br label %21

21:                                               ; preds = %9
  %22 = load double, ptr %3, align 8, !tbaa !5
  %23 = call double @cdr(double noundef %22)
  store double %23, ptr %3, align 8, !tbaa !5
  br label %5, !llvm.loop !9

24:                                               ; preds = %5
  %25 = load double, ptr %3, align 8, !tbaa !5
  %26 = call double @car(double noundef %25)
  %27 = load double, ptr %4, align 8, !tbaa !5
  %28 = call double @eval(double noundef %26, double noundef %27)
  ret double %28
}

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 = !{!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"}


; 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 @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 double @pair(double noundef, double noundef, double noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @let(double noundef) local_unnamed_addr #0

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

; Function Attrs: nounwind uwtable
define dso_local double @f_leta(double noundef %0, double noundef %1) local_unnamed_addr #0 {
  %3 = tail call i32 @let(double noundef %0)
  %.not9 = icmp eq i32 %3, 0
  br i1 %.not9, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.011 = phi double [ %10, %.lr.ph ], [ %1, %2 ]
  %.0810 = phi double [ %11, %.lr.ph ], [ %0, %2 ]
  %4 = tail call double @car(double noundef %.0810)
  %5 = tail call double @car(double noundef %4)
  %6 = tail call double @car(double noundef %.0810)
  %7 = tail call double @cdr(double noundef %6)
  %8 = tail call double @car(double noundef %7)
  %9 = tail call double @eval(double noundef %8, double noundef %.011)
  %10 = tail call double @pair(double noundef %5, double noundef %9, double noundef %.011)
  %11 = tail call double @cdr(double noundef %.0810)
  %12 = tail call i32 @let(double noundef %11)
  %.not = icmp eq i32 %12, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %2
  %.08.lcssa = phi double [ %0, %2 ], [ %11, %.lr.ph ]
  %.0.lcssa = phi double [ %1, %2 ], [ %10, %.lr.ph ]
  %13 = tail call double @car(double noundef %.08.lcssa)
  %14 = tail call double @eval(double noundef %13, double noundef %.0.lcssa)
  ret double %14
}

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,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass