; LLVM IR from mausimus/rtdoom :: rtdoom/MathCache.ll (ZNK6rtdoom9MathCache3CosEf)

; 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.rtdoom::MathCache" = type { %"struct.std::array", %"struct.std::array", %"struct.std::array", %"struct.std::array" }
%"struct.std::array" = type { [16385 x float] }

; 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 nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayIfLm16385EEixEm(ptr noundef nonnull align 4 dereferenceable(65540), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef float @_ZNK6rtdoom9MathCache3CosEf(ptr noundef nonnull align 4 dereferenceable(262160) %0, float noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca float, align 4
  %5 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store float %1, ptr %4, align 4, !tbaa !9
  %6 = load ptr, ptr %3, align 8
  br label %7

7:                                                ; preds = %10, %2
  %8 = load float, ptr %4, align 4, !tbaa !9
  %9 = fcmp olt float %8, 0x401921FB60000000
  br i1 %9, label %10, label %13

10:                                               ; preds = %7
  %11 = load float, ptr %4, align 4, !tbaa !9
  %12 = fadd float %11, 0x401921FB60000000
  store float %12, ptr %4, align 4, !tbaa !9
  br label %7, !llvm.loop !11

13:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %14 = load float, ptr %4, align 4, !tbaa !9
  %15 = fdiv float %14, 0x401921FB60000000
  %16 = fmul float %15, 1.638400e+04
  %17 = fptoui float %16 to i64
  store i64 %17, ptr %5, align 8, !tbaa !13
  %18 = getelementptr inbounds %"class.rtdoom::MathCache", ptr %6, i32 0, i32 2
  %19 = load i64, ptr %5, align 8, !tbaa !13
  %20 = urem i64 %19, 16385
  %21 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayIfLm16385EEixEm(ptr noundef nonnull align 4 dereferenceable(65540) %18, i64 noundef %20) #2
  %22 = load float, ptr %21, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret float %22
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!14, !14, i64 0}
!14 = !{!"long", !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 nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayIfLm16385EEixEm(ptr noundef nonnull align 4 dereferenceable(65540), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef float @_ZNK6rtdoom9MathCache3CosEf(ptr noundef nonnull align 4 dereferenceable(262160) %0, float noundef %1) local_unnamed_addr #0 align 2 {
  %3 = fcmp olt float %1, 0x401921FB60000000
  br i1 %3, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.04 = phi float [ %4, %.lr.ph ], [ %1, %2 ]
  %4 = fadd float %.04, 0x401921FB60000000
  %5 = fcmp olt float %4, 0x401921FB60000000
  br i1 %5, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %2
  %.0.lcssa = phi float [ %1, %2 ], [ %4, %.lr.ph ]
  %6 = fdiv float %.0.lcssa, 0x401921FB60000000
  %7 = fmul float %6, 1.638400e+04
  %8 = fptoui float %7 to i64
  %9 = getelementptr inbounds i8, ptr %0, i64 131080
  %10 = urem i64 %8, 16385
  %11 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayIfLm16385EEixEm(ptr noundef nonnull align 4 dereferenceable(65540) %9, i64 noundef %10) #1
  %12 = load float, ptr %11, align 4, !tbaa !7
  ret float %12
}

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" }
attributes #1 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!8, !8, i64 0}
!8 = !{!"float", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}


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