; LLVM IR from chrxh/alien :: source/Base/Math.ll (ZN4Math17unitVectorOfAngleEf)

; 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"

%struct.RealVector2D = type { float, float }
%"class.std::initializer_list" = type { ptr, i64 }

; 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 uwtable
define dso_local <2 x float> @_ZN4Math17unitVectorOfAngleEf(float noundef %0) #1 align 2 {
  %2 = alloca %struct.RealVector2D, align 4
  %3 = alloca float, align 4
  %4 = alloca %"class.std::initializer_list", align 8
  %5 = alloca [2 x float], align 4
  store float %0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %6 = load float, ptr %3, align 4, !tbaa !5
  %7 = fmul float %6, 0x3F91DF46A0000000
  %8 = call float @sinf(float noundef %7) #4
  store float %8, ptr %5, align 4, !tbaa !5
  %9 = getelementptr inbounds float, ptr %5, i64 1
  %10 = load float, ptr %3, align 4, !tbaa !5
  %11 = fmul float %10, 0x3F91DF46A0000000
  %12 = call float @cosf(float noundef %11) #4
  %13 = fneg float %12
  store float %13, ptr %9, align 4, !tbaa !5
  %14 = getelementptr inbounds %"class.std::initializer_list", ptr %4, i32 0, i32 0
  store ptr %5, ptr %14, align 8, !tbaa !9
  %15 = getelementptr inbounds %"class.std::initializer_list", ptr %4, i32 0, i32 1
  store i64 2, ptr %15, align 8, !tbaa !13
  %16 = getelementptr inbounds { ptr, i64 }, ptr %4, i32 0, i32 0
  %17 = load ptr, ptr %16, align 8
  %18 = getelementptr inbounds { ptr, i64 }, ptr %4, i32 0, i32 1
  %19 = load i64, ptr %18, align 8
  call void @_ZN12RealVector2DC1ESt16initializer_listIfE(ptr noundef nonnull align 4 dereferenceable(8) %2, ptr %17, i64 %19)
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  %20 = load <2 x float>, ptr %2, align 4
  ret <2 x float> %20
}

; Function Attrs: nounwind
declare float @sinf(float noundef) #2

; Function Attrs: nounwind
declare float @cosf(float noundef) #2

declare void @_ZN12RealVector2DC1ESt16initializer_listIfE(ptr noundef nonnull align 4 dereferenceable(8), ptr, i64) unnamed_addr #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress uwtable "min-legal-vector-width"="64" "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 "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 #3 = { "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 #4 = { 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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"_ZTSSt16initializer_listIfE", !11, i64 0, !12, i64 8}
!11 = !{!"any pointer", !7, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!10, !12, i64 8}


; 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"

%struct.RealVector2D = type { float, float }

; 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: mustprogress uwtable
define dso_local <2 x float> @_ZN4Math17unitVectorOfAngleEf(float noundef %0) local_unnamed_addr #1 align 2 {
  %2 = alloca %struct.RealVector2D, align 8
  %3 = alloca [2 x float], align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %4 = fmul float %0, 0x3F91DF46A0000000
  %5 = tail call float @sinf(float noundef %4) #4
  store float %5, ptr %3, align 4, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %3, i64 4
  %7 = tail call float @cosf(float noundef %4) #4
  %8 = fneg float %7
  store float %8, ptr %6, align 4, !tbaa !5
  call void @_ZN12RealVector2DC1ESt16initializer_listIfE(ptr noundef nonnull align 4 dereferenceable(8) %2, ptr nonnull %3, i64 2)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  %9 = load <2 x float>, ptr %2, align 8
  ret <2 x float> %9
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(write)
declare float @sinf(float noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nofree nounwind willreturn memory(write)
declare float @cosf(float noundef) local_unnamed_addr #2

declare void @_ZN12RealVector2DC1ESt16initializer_listIfE(ptr noundef nonnull align 4 dereferenceable(8), ptr, i64) unnamed_addr #3

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress uwtable "min-legal-vector-width"="64" "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 = { mustprogress nofree nounwind willreturn memory(write) "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 #3 = { "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 #4 = { 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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,TailCallElimPass