; LLVM IR from Lut1n/ImpGears :: src/ImpGears/Core/Matrix4.ll (ZN3imp7Matrix415perspectiveProjEffff)

; 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.imp::Matrix4" = type { %"class.imp::Matrix" }
%"class.imp::Matrix" = type { %"class.imp::Object", [16 x float] }
%"class.imp::Object" = type { ptr, %"class.std::shared_ptr" }
%"class.std::shared_ptr" = type { %"class.std::__shared_ptr" }
%"class.std::__shared_ptr" = type { ptr, %"class.std::__shared_count" }
%"class.std::__shared_count" = type { ptr }

; 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 void @_ZN3imp7Matrix415perspectiveProjEffff(ptr dead_on_unwind noalias writable sret(%"class.imp::Matrix4") align 8 %0, float noundef %1, float noundef %2, float noundef %3, float noundef %4) #1 align 2 {
  %6 = alloca ptr, align 8
  %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 [16 x float], align 16
  store ptr %0, ptr %6, align 8
  store float %1, ptr %7, align 4, !tbaa !5
  store float %2, ptr %8, align 4, !tbaa !5
  store float %3, ptr %9, align 4, !tbaa !5
  store float %4, ptr %10, align 4, !tbaa !5
  %16 = load float, ptr %7, align 4, !tbaa !5
  %17 = fmul float %16, 0x3F91DF45C0000000
  store float %17, ptr %7, align 4, !tbaa !5
  %18 = load float, ptr %7, align 4, !tbaa !5
  %19 = fdiv float %18, 2.000000e+00
  store float %19, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %20 = load float, ptr %7, align 4, !tbaa !5
  %21 = call float @tanf(float noundef %20) #3
  %22 = fdiv float 1.000000e+00, %21
  store float %22, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %23 = load float, ptr %11, align 4, !tbaa !5
  %24 = load float, ptr %8, align 4, !tbaa !5
  %25 = fmul float %23, %24
  store float %25, ptr %12, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #3
  %26 = load float, ptr %10, align 4, !tbaa !5
  %27 = load float, ptr %9, align 4, !tbaa !5
  %28 = fadd float %26, %27
  %29 = fneg float %28
  %30 = load float, ptr %10, align 4, !tbaa !5
  %31 = load float, ptr %9, align 4, !tbaa !5
  %32 = fsub float %30, %31
  %33 = fdiv float %29, %32
  store float %33, ptr %13, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #3
  %34 = load float, ptr %10, align 4, !tbaa !5
  %35 = load float, ptr %9, align 4, !tbaa !5
  %36 = fmul float %34, %35
  %37 = fmul float -2.000000e+00, %36
  %38 = load float, ptr %10, align 4, !tbaa !5
  %39 = load float, ptr %9, align 4, !tbaa !5
  %40 = fsub float %38, %39
  %41 = fdiv float %37, %40
  store float %41, ptr %14, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 64, ptr %15) #3
  %42 = load float, ptr %11, align 4, !tbaa !5
  store float %42, ptr %15, align 4, !tbaa !5
  %43 = getelementptr inbounds float, ptr %15, i64 1
  store float 0.000000e+00, ptr %43, align 4, !tbaa !5
  %44 = getelementptr inbounds float, ptr %15, i64 2
  store float 0.000000e+00, ptr %44, align 4, !tbaa !5
  %45 = getelementptr inbounds float, ptr %15, i64 3
  store float 0.000000e+00, ptr %45, align 4, !tbaa !5
  %46 = getelementptr inbounds float, ptr %15, i64 4
  store float 0.000000e+00, ptr %46, align 4, !tbaa !5
  %47 = getelementptr inbounds float, ptr %15, i64 5
  %48 = load float, ptr %12, align 4, !tbaa !5
  store float %48, ptr %47, align 4, !tbaa !5
  %49 = getelementptr inbounds float, ptr %15, i64 6
  store float 0.000000e+00, ptr %49, align 4, !tbaa !5
  %50 = getelementptr inbounds float, ptr %15, i64 7
  store float 0.000000e+00, ptr %50, align 4, !tbaa !5
  %51 = getelementptr inbounds float, ptr %15, i64 8
  store float 0.000000e+00, ptr %51, align 4, !tbaa !5
  %52 = getelementptr inbounds float, ptr %15, i64 9
  store float 0.000000e+00, ptr %52, align 4, !tbaa !5
  %53 = getelementptr inbounds float, ptr %15, i64 10
  %54 = load float, ptr %13, align 4, !tbaa !5
  store float %54, ptr %53, align 4, !tbaa !5
  %55 = getelementptr inbounds float, ptr %15, i64 11
  %56 = load float, ptr %14, align 4, !tbaa !5
  store float %56, ptr %55, align 4, !tbaa !5
  %57 = getelementptr inbounds float, ptr %15, i64 12
  store float 0.000000e+00, ptr %57, align 4, !tbaa !5
  %58 = getelementptr inbounds float, ptr %15, i64 13
  store float 0.000000e+00, ptr %58, align 4, !tbaa !5
  %59 = getelementptr inbounds float, ptr %15, i64 14
  store float -1.000000e+00, ptr %59, align 4, !tbaa !5
  %60 = getelementptr inbounds float, ptr %15, i64 15
  store float 0.000000e+00, ptr %60, align 4, !tbaa !5
  %61 = getelementptr inbounds [16 x float], ptr %15, i64 0, i64 0
  call void @_ZN3imp7Matrix4C1EPKfb(ptr noundef nonnull align 8 dereferenceable(88) %0, ptr noundef %61, i1 noundef zeroext true)
  call void @llvm.lifetime.end.p0(i64 64, ptr %15) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  ret void
}

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

declare void @_ZN3imp7Matrix4C1EPKfb(ptr, ptr, i1)

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


; 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.imp::Matrix4" = type { %"class.imp::Matrix" }
%"class.imp::Matrix" = type { %"class.imp::Object", [16 x float] }
%"class.imp::Object" = type { ptr, %"class.std::shared_ptr" }
%"class.std::shared_ptr" = type { %"class.std::__shared_ptr" }
%"class.std::__shared_ptr" = type { ptr, %"class.std::__shared_count" }
%"class.std::__shared_count" = type { ptr }

; 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 void @_ZN3imp7Matrix415perspectiveProjEffff(ptr dead_on_unwind noalias writable sret(%"class.imp::Matrix4") align 8 %0, float noundef %1, float noundef %2, float noundef %3, float noundef %4) local_unnamed_addr #1 align 2 {
  %6 = alloca [16 x float], align 16
  %7 = fmul float %1, 0x3F91DF45C0000000
  %8 = fmul float %7, 5.000000e-01
  %9 = tail call float @tanf(float noundef %8) #4
  %10 = fdiv float 1.000000e+00, %9
  %11 = fmul float %10, %2
  %12 = fadd float %3, %4
  %13 = fneg float %12
  %14 = fsub float %4, %3
  %15 = fmul float %3, %4
  %16 = fmul float %15, -2.000000e+00
  call void @llvm.lifetime.start.p0(i64 64, ptr nonnull %6) #4
  store float %10, ptr %6, align 16, !tbaa !5
  %17 = getelementptr inbounds i8, ptr %6, i64 4
  %18 = getelementptr inbounds i8, ptr %6, i64 20
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(16) %17, i8 0, i64 16, i1 false)
  store float %11, ptr %18, align 4, !tbaa !5
  %19 = getelementptr inbounds i8, ptr %6, i64 24
  %20 = getelementptr inbounds i8, ptr %6, i64 40
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %19, i8 0, i64 16, i1 false)
  %21 = insertelement <2 x float> poison, float %13, i64 0
  %22 = insertelement <2 x float> %21, float %16, i64 1
  %23 = insertelement <2 x float> poison, float %14, i64 0
  %24 = shufflevector <2 x float> %23, <2 x float> poison, <2 x i32> zeroinitializer
  %25 = fdiv <2 x float> %22, %24
  store <2 x float> %25, ptr %20, align 8, !tbaa !5
  %26 = 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 %26, align 16, !tbaa !5
  call void @_ZN3imp7Matrix4C1EPKfb(ptr noundef nonnull align 8 dereferenceable(88) %0, ptr noundef nonnull %6, i1 noundef zeroext true)
  call void @llvm.lifetime.end.p0(i64 64, ptr nonnull %6) #4
  ret void
}

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

declare void @_ZN3imp7Matrix4C1EPKfb(ptr, ptr, i1) local_unnamed_addr

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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,MemCpyOptPass,ReassociatePass,SLPVectorizerPass,SROAPass,TailCallElimPass