; LLVM IR from ESPboy-edu/ESPboy_tinyphysicsengine :: programs (hello2)

; 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"

@screen = external dso_local global [512 x i8], align 16

; 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 @clearScreen() #1 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #2
  store i32 0, ptr %1, align 4, !tbaa !5
  br label %2

2:                                                ; preds = %31, %0
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %4 = icmp slt i32 %3, 512
  br i1 %4, label %6, label %5

5:                                                ; preds = %2
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #2
  br label %34

6:                                                ; preds = %2
  %7 = load i32, ptr %1, align 4, !tbaa !5
  %8 = icmp slt i32 %7, 32
  br i1 %8, label %12, label %9

9:                                                ; preds = %6
  %10 = load i32, ptr %1, align 4, !tbaa !5
  %11 = icmp sge i32 %10, 480
  br i1 %11, label %12, label %13

12:                                               ; preds = %9, %6
  br label %25

13:                                               ; preds = %9
  %14 = load i32, ptr %1, align 4, !tbaa !5
  %15 = srem i32 %14, 32
  %16 = icmp eq i32 %15, 0
  br i1 %16, label %21, label %17

17:                                               ; preds = %13
  %18 = load i32, ptr %1, align 4, !tbaa !5
  %19 = srem i32 %18, 32
  %20 = icmp eq i32 %19, 31
  br label %21

21:                                               ; preds = %17, %13
  %22 = phi i1 [ true, %13 ], [ %20, %17 ]
  %23 = zext i1 %22 to i64
  %24 = select i1 %22, i32 124, i32 32
  br label %25

25:                                               ; preds = %21, %12
  %26 = phi i32 [ 45, %12 ], [ %24, %21 ]
  %27 = trunc i32 %26 to i8
  %28 = load i32, ptr %1, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [512 x i8], ptr @screen, i64 0, i64 %29
  store i8 %27, ptr %30, align 1, !tbaa !9
  br label %31

31:                                               ; preds = %25
  %32 = load i32, ptr %1, align 4, !tbaa !5
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %1, align 4, !tbaa !5
  br label %2, !llvm.loop !10

34:                                               ; preds = %5
  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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"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"

@screen = external dso_local local_unnamed_addr global [512 x i8], align 16

; Function Attrs: nofree norecurse nosync nounwind memory(write, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @clearScreen() local_unnamed_addr #0 {
vector.ph:
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.ind = phi <16 x i32> [ <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>, %vector.ph ], [ %vec.ind.next, %vector.body ]
  %vec.ind11 = phi <16 x i32> [ <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>, %vector.ph ], [ %vec.ind.next12, %vector.body ]
  %0 = add <16 x i32> %vec.ind, <i32 -480, i32 -480, i32 -480, i32 -480, i32 -480, i32 -480, i32 -480, i32 -480, i32 -480, i32 -480, i32 -480, i32 -480, i32 -480, i32 -480, i32 -480, i32 -480>
  %1 = icmp ult <16 x i32> %0, <i32 -448, i32 -448, i32 -448, i32 -448, i32 -448, i32 -448, i32 -448, i32 -448, i32 -448, i32 -448, i32 -448, i32 -448, i32 -448, i32 -448, i32 -448, i32 -448>
  %2 = and <16 x i32> %vec.ind11, <i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31>
  %3 = icmp eq <16 x i32> %2, zeroinitializer
  %4 = icmp eq <16 x i32> %2, <i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31, i32 31>
  %5 = or <16 x i1> %3, %4
  %6 = select <16 x i1> %5, <16 x i8> <i8 124, i8 124, i8 124, i8 124, i8 124, i8 124, i8 124, i8 124, i8 124, i8 124, i8 124, i8 124, i8 124, i8 124, i8 124, i8 124>, <16 x i8> <i8 32, i8 32, i8 32, i8 32, i8 32, i8 32, i8 32, i8 32, i8 32, i8 32, i8 32, i8 32, i8 32, i8 32, i8 32, i8 32>
  %predphi = select <16 x i1> %1, <16 x i8> <i8 45, i8 45, i8 45, i8 45, i8 45, i8 45, i8 45, i8 45, i8 45, i8 45, i8 45, i8 45, i8 45, i8 45, i8 45, i8 45>, <16 x i8> %6
  %7 = getelementptr inbounds [512 x i8], ptr @screen, i64 0, i64 %index
  store <16 x i8> %predphi, ptr %7, align 16, !tbaa !5
  %index.next = add nuw i64 %index, 16
  %vec.ind.next = add <16 x i32> %vec.ind, <i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
  %vec.ind.next12 = add <16 x i32> %vec.ind11, <i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
  %8 = icmp eq i64 %index.next, 512
  br i1 %8, label %middle.block, label %vector.body, !llvm.loop !8

middle.block:                                     ; preds = %vector.body
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(write, argmem: none, 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, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9, !10, !11}
!9 = !{!"llvm.loop.mustprogress"}
!10 = !{!"llvm.loop.isvectorized", i32 1}
!11 = !{!"llvm.loop.unroll.runtime.disable"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,LoopLoadEliminationPass,LoopRotatePass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass