; LLVM IR from ThePhysicsGuys/Physics3D :: Physics3D/math/linalg/trigonometry.ll (ZN3P3D11perspectiveEffff)

; 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.P3D::Matrix" = type { [16 x 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: inlinehint mustprogress uwtable
declare dso_local void @_ZN3P3D6MatrixIfLm4ELm4EEC2ESt16initializer_listIfE(ptr noundef nonnull align 4 dereferenceable(64), ptr, i64) unnamed_addr #1 align 2

; 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 void @_ZN3P3D11perspectiveEffff(ptr dead_on_unwind noalias writable sret(%"class.P3D::Matrix") align 4 %0, float noundef %1, float noundef %2, float noundef %3, float noundef %4) #2 {
  %6 = alloca float, align 4
  %7 = alloca float, align 4
  %8 = alloca float, align 4
  %9 = alloca float, align 4
  %10 = alloca float, align 4
  %11 = alloca float, align 4
  %12 = alloca float, align 4
  %13 = alloca float, align 4
  %14 = alloca float, align 4
  %15 = alloca float, align 4
  %16 = alloca %"class.std::initializer_list", align 8
  %17 = alloca [16 x float], align 4
  store float %1, ptr %6, align 4, !tbaa !5
  store float %2, ptr %7, align 4, !tbaa !5
  store float %3, ptr %8, align 4, !tbaa !5
  store float %4, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  %18 = load float, ptr %6, align 4, !tbaa !5
  %19 = fdiv float %18, 2.000000e+00
  %20 = fpext float %19 to double
  %21 = call double @tan(double noundef %20) #4
  %22 = fptrunc double %21 to float
  store float %22, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #4
  %23 = load float, ptr %10, align 4, !tbaa !5
  %24 = load float, ptr %7, align 4, !tbaa !5
  %25 = fmul float %23, %24
  %26 = fdiv float 1.000000e+00, %25
  store float %26, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  %27 = load float, ptr %10, align 4, !tbaa !5
  %28 = fdiv float 1.000000e+00, %27
  store float %28, ptr %12, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #4
  %29 = load float, ptr %9, align 4, !tbaa !5
  %30 = load float, ptr %8, align 4, !tbaa !5
  %31 = fadd float %29, %30
  %32 = load float, ptr %8, align 4, !tbaa !5
  %33 = load float, ptr %9, align 4, !tbaa !5
  %34 = fsub float %32, %33
  %35 = fdiv float %31, %34
  store float %35, ptr %13, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #4
  %36 = load float, ptr %9, align 4, !tbaa !5
  %37 = load float, ptr %9, align 4, !tbaa !5
  %38 = fadd float %36, %37
  %39 = load float, ptr %8, align 4, !tbaa !5
  %40 = fmul float %38, %39
  %41 = load float, ptr %8, align 4, !tbaa !5
  %42 = load float, ptr %9, align 4, !tbaa !5
  %43 = fsub float %41, %42
  %44 = fdiv float %40, %43
  store float %44, ptr %14, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #4
  store float -1.000000e+00, ptr %15, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 64, ptr %17) #4
  %45 = load float, ptr %11, align 4, !tbaa !5
  store float %45, ptr %17, align 4, !tbaa !5
  %46 = getelementptr inbounds float, ptr %17, i64 1
  store float 0.000000e+00, ptr %46, align 4, !tbaa !5
  %47 = getelementptr inbounds float, ptr %17, i64 2
  store float 0.000000e+00, ptr %47, align 4, !tbaa !5
  %48 = getelementptr inbounds float, ptr %17, i64 3
  store float 0.000000e+00, ptr %48, align 4, !tbaa !5
  %49 = getelementptr inbounds float, ptr %17, i64 4
  store float 0.000000e+00, ptr %49, align 4, !tbaa !5
  %50 = getelementptr inbounds float, ptr %17, i64 5
  %51 = load float, ptr %12, align 4, !tbaa !5
  store float %51, ptr %50, align 4, !tbaa !5
  %52 = getelementptr inbounds float, ptr %17, i64 6
  store float 0.000000e+00, ptr %52, align 4, !tbaa !5
  %53 = getelementptr inbounds float, ptr %17, i64 7
  store float 0.000000e+00, ptr %53, align 4, !tbaa !5
  %54 = getelementptr inbounds float, ptr %17, i64 8
  store float 0.000000e+00, ptr %54, align 4, !tbaa !5
  %55 = getelementptr inbounds float, ptr %17, i64 9
  store float 0.000000e+00, ptr %55, align 4, !tbaa !5
  %56 = getelementptr inbounds float, ptr %17, i64 10
  %57 = load float, ptr %13, align 4, !tbaa !5
  store float %57, ptr %56, align 4, !tbaa !5
  %58 = getelementptr inbounds float, ptr %17, i64 11
  %59 = load float, ptr %14, align 4, !tbaa !5
  store float %59, ptr %58, align 4, !tbaa !5
  %60 = getelementptr inbounds float, ptr %17, i64 12
  store float 0.000000e+00, ptr %60, align 4, !tbaa !5
  %61 = getelementptr inbounds float, ptr %17, i64 13
  store float 0.000000e+00, ptr %61, align 4, !tbaa !5
  %62 = getelementptr inbounds float, ptr %17, i64 14
  %63 = load float, ptr %15, align 4, !tbaa !5
  store float %63, ptr %62, align 4, !tbaa !5
  %64 = getelementptr inbounds float, ptr %17, i64 15
  store float 0.000000e+00, ptr %64, align 4, !tbaa !5
  %65 = getelementptr inbounds %"class.std::initializer_list", ptr %16, i32 0, i32 0
  store ptr %17, ptr %65, align 8, !tbaa !9
  %66 = getelementptr inbounds %"class.std::initializer_list", ptr %16, i32 0, i32 1
  store i64 16, ptr %66, align 8, !tbaa !13
  %67 = getelementptr inbounds { ptr, i64 }, ptr %16, i32 0, i32 0
  %68 = load ptr, ptr %67, align 8
  %69 = getelementptr inbounds { ptr, i64 }, ptr %16, i32 0, i32 1
  %70 = load i64, ptr %69, align 8
  call void @_ZN3P3D6MatrixIfLm4ELm4EEC2ESt16initializer_listIfE(ptr noundef nonnull align 4 dereferenceable(64) %0, ptr %68, i64 %70)
  call void @llvm.lifetime.end.p0(i64 64, ptr %17) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  ret void
}

; Function Attrs: nounwind
declare double @tan(double noundef) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint mustprogress 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 = { mustprogress 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 #3 = { 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 #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"

%"class.P3D::Matrix" = type { [16 x 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: inlinehint mustprogress uwtable
declare dso_local void @_ZN3P3D6MatrixIfLm4ELm4EEC2ESt16initializer_listIfE(ptr noundef nonnull align 4 dereferenceable(64), ptr, i64) unnamed_addr #1 align 2

; 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 void @_ZN3P3D11perspectiveEffff(ptr dead_on_unwind noalias nonnull writable sret(%"class.P3D::Matrix") align 4 %0, float noundef %1, float noundef %2, float noundef %3, float noundef %4) local_unnamed_addr #2 {
  %6 = alloca [16 x float], align 4
  %7 = fmul float %1, 5.000000e-01
  %8 = fpext float %7 to double
  %9 = tail call double @tan(double noundef %8) #5
  %10 = fptrunc double %9 to float
  %11 = fmul float %10, %2
  %12 = fdiv float 1.000000e+00, %11
  %13 = fdiv float 1.000000e+00, %10
  %14 = fadd float %3, %4
  %15 = fsub float %3, %4
  %16 = fadd float %4, %4
  %17 = fmul float %16, %3
  call void @llvm.lifetime.start.p0(i64 64, ptr nonnull %6) #5
  store float %12, ptr %6, align 4, !tbaa !5
  %18 = getelementptr inbounds i8, ptr %6, i64 4
  %19 = getelementptr inbounds i8, ptr %6, i64 20
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(16) %18, i8 0, i64 16, i1 false)
  store float %13, ptr %19, align 4, !tbaa !5
  %20 = getelementptr inbounds i8, ptr %6, i64 24
  %21 = getelementptr inbounds i8, ptr %6, i64 40
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(16) %20, i8 0, i64 16, i1 false)
  %22 = insertelement <2 x float> poison, float %14, i64 0
  %23 = insertelement <2 x float> %22, float %17, i64 1
  %24 = insertelement <2 x float> poison, float %15, i64 0
  %25 = shufflevector <2 x float> %24, <2 x float> poison, <2 x i32> zeroinitializer
  %26 = fdiv <2 x float> %23, %25
  store <2 x float> %26, ptr %21, align 4, !tbaa !5
  %27 = getelementptr inbounds i8, ptr %6, i64 48
  store <4 x float> <float 0.000000e+00, float 0.000000e+00, float -1.000000e+00, float 0.000000e+00>, ptr %27, align 4, !tbaa !5
  call void @_ZN3P3D6MatrixIfLm4ELm4EEC2ESt16initializer_listIfE(ptr noundef nonnull align 4 dereferenceable(64) %0, ptr nonnull %6, i64 16)
  call void @llvm.lifetime.end.p0(i64 64, ptr nonnull %6) #5
  ret void
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(write)
declare double @tan(double noundef) local_unnamed_addr #3

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint mustprogress 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 = { mustprogress 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 #3 = { 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 #4 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { 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,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,ReassociatePass,SLPVectorizerPass,SROAPass,TailCallElimPass