; LLVM IR from mesbahamin/star-sim :: src (sim)

; 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.OffscreenBuffer = type { ptr, i32, i32, i32 }

; 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: nounwind uwtable
define dso_local void @sim_set_pixel(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  store i32 %3, ptr %8, align 4, !tbaa !9
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = icmp ne ptr %11, null
  br i1 %12, label %14, label %13

13:                                               ; preds = %4
  br label %44

14:                                               ; preds = %4
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.OffscreenBuffer, ptr %16, i32 0, i32 1
  %18 = load i32, ptr %17, align 8, !tbaa !11
  %19 = icmp ult i32 %15, %18
  br i1 %19, label %20, label %44

20:                                               ; preds = %14
  %21 = load i32, ptr %7, align 4, !tbaa !9
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.OffscreenBuffer, ptr %22, i32 0, i32 2
  %24 = load i32, ptr %23, align 4, !tbaa !13
  %25 = icmp ult i32 %21, %24
  br i1 %25, label %26, label %44

26:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.OffscreenBuffer, ptr %27, i32 0, i32 0
  %29 = load ptr, ptr %28, align 8, !tbaa !14
  store ptr %29, ptr %9, align 8, !tbaa !5
  %30 = load i32, ptr %6, align 4, !tbaa !9
  %31 = mul i32 4, %30
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.OffscreenBuffer, ptr %32, i32 0, i32 3
  %34 = load i32, ptr %33, align 8, !tbaa !15
  %35 = load i32, ptr %7, align 4, !tbaa !9
  %36 = mul i32 %34, %35
  %37 = add i32 %31, %36
  %38 = load ptr, ptr %9, align 8, !tbaa !5
  %39 = zext i32 %37 to i64
  %40 = getelementptr inbounds i8, ptr %38, i64 %39
  store ptr %40, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  %41 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %41, ptr %10, align 8, !tbaa !5
  %42 = load i32, ptr %8, align 4, !tbaa !9
  %43 = load ptr, ptr %10, align 8, !tbaa !5
  store i32 %42, ptr %43, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  br label %44

44:                                               ; preds = %26, %20, %14, %13
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 8}
!12 = !{!"OffscreenBuffer", !6, i64 0, !10, i64 8, !10, i64 12, !10, i64 16}
!13 = !{!12, !10, i64 12}
!14 = !{!12, !6, i64 0}
!15 = !{!12, !10, i64 16}


; 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(write, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local void @sim_set_pixel(ptr noundef readonly %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %22, label %5

5:                                                ; preds = %4
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  %7 = load i32, ptr %6, align 8, !tbaa !5
  %8 = icmp ugt i32 %7, %1
  br i1 %8, label %9, label %22

9:                                                ; preds = %5
  %10 = getelementptr inbounds i8, ptr %0, i64 12
  %11 = load i32, ptr %10, align 4, !tbaa !11
  %12 = icmp ugt i32 %11, %2
  br i1 %12, label %13, label %22

13:                                               ; preds = %9
  %14 = load ptr, ptr %0, align 8, !tbaa !12
  %15 = shl i32 %1, 2
  %16 = getelementptr inbounds i8, ptr %0, i64 16
  %17 = load i32, ptr %16, align 8, !tbaa !13
  %18 = mul i32 %17, %2
  %19 = add i32 %18, %15
  %20 = zext i32 %19 to i64
  %21 = getelementptr inbounds i8, ptr %14, i64 %20
  store i32 %3, ptr %21, align 4, !tbaa !14
  br label %22

22:                                               ; preds = %4, %13, %9, %5
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: readwrite, inaccessiblemem: 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 = !{!6, !10, i64 8}
!6 = !{!"OffscreenBuffer", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !10, i64 12}
!12 = !{!6, !7, i64 0}
!13 = !{!6, !10, i64 16}
!14 = !{!10, !10, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass