; LLVM IR from aap/librw :: src/d3d/xboxvfmt.ll (ZN2rw4xbox13makeVertexFmtEij)

; 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: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN2rw4xbox13makeVertexFmtEij(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  %7 = load i32, ptr %4, align 4, !tbaa !5
  %8 = icmp ugt i32 %7, 4
  br i1 %8, label %9, label %10

9:                                                ; preds = %2
  store i32 4, ptr %4, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %9, %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 5, ptr %5, align 4, !tbaa !5
  %11 = load i32, ptr %3, align 4, !tbaa !5
  %12 = and i32 %11, 16
  %13 = icmp ne i32 %12, 0
  br i1 %13, label %14, label %17

14:                                               ; preds = %10
  %15 = load i32, ptr %5, align 4, !tbaa !5
  %16 = or i32 %15, 64
  store i32 %16, ptr %5, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %14, %10
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %18

18:                                               ; preds = %29, %17
  %19 = load i32, ptr %6, align 4, !tbaa !5
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = icmp ult i32 %19, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %32

23:                                               ; preds = %18
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = mul i32 %24, 4
  %26 = shl i32 1280, %25
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = or i32 %27, %26
  store i32 %28, ptr %5, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %23
  %30 = load i32, ptr %6, align 4, !tbaa !5
  %31 = add i32 %30, 1
  store i32 %31, ptr %6, align 4, !tbaa !5
  br label %18, !llvm.loop !9

32:                                               ; preds = %22
  %33 = load i32, ptr %3, align 4, !tbaa !5
  %34 = and i32 %33, 8
  %35 = icmp ne i32 %34, 0
  br i1 %35, label %36, label %39

36:                                               ; preds = %32
  %37 = load i32, ptr %5, align 4, !tbaa !5
  %38 = or i32 %37, 16777216
  store i32 %38, ptr %5, align 4, !tbaa !5
  br label %39

39:                                               ; preds = %36, %32
  %40 = load i32, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %40
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple 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: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef i32 @_ZN2rw4xbox13makeVertexFmtEij(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = and i32 %0, 16
  %.not = icmp eq i32 %3, 0
  %spec.select = select i1 %.not, i32 5, i32 69
  %.not16 = icmp eq i32 %1, 0
  br i1 %.not16, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph.2, %.lr.ph, %.lr.ph.1, %2
  %.1.lcssa = phi i32 [ %spec.select, %2 ], [ %6, %.lr.ph ], [ %7, %.lr.ph.1 ], [ %spec.select17, %.lr.ph.2 ]
  %4 = shl i32 %0, 21
  %5 = and i32 %4, 16777216
  %spec.select13 = or i32 %.1.lcssa, %5
  ret i32 %spec.select13

.lr.ph:                                           ; preds = %2
  %6 = or disjoint i32 %spec.select, 1280
  %exitcond.not = icmp eq i32 %1, 1
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph.1, !llvm.loop !5

.lr.ph.1:                                         ; preds = %.lr.ph
  %7 = or disjoint i32 %spec.select, 21760
  %exitcond.not.1 = icmp eq i32 %1, 2
  br i1 %exitcond.not.1, label %._crit_edge, label %.lr.ph.2, !llvm.loop !5

.lr.ph.2:                                         ; preds = %.lr.ph.1
  %8 = or disjoint i32 %spec.select, 349440
  %exitcond.not.2 = icmp eq i32 %1, 3
  %9 = or disjoint i32 %spec.select, 5592320
  %spec.select17 = select i1 %exitcond.not.2, i32 %8, i32 %9
  br label %._crit_edge, !llvm.loop !5
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) 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: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalDCEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass