; LLVM IR from bondhugula/pluto :: examples/dct (dct)

; 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"

@block = external dso_local global [1024 x [1067 x double]], align 16
@stdout = external global ptr, align 8
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1

; 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 @print_array() #1 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 0, ptr %1, align 4, !tbaa !5
  br label %3

3:                                                ; preds = %33, %0
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = icmp slt i32 %4, 1024
  br i1 %5, label %6, label %36

6:                                                ; preds = %3
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %27, %6
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = icmp slt i32 %8, 1024
  br i1 %9, label %10, label %30

10:                                               ; preds = %7
  %11 = load ptr, ptr @stdout, align 8, !tbaa !9
  %12 = load i32, ptr %1, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [1024 x [1067 x double]], ptr @block, i64 0, i64 %13
  %15 = load i32, ptr %2, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [1067 x double], ptr %14, i64 0, i64 %16
  %18 = load double, ptr %17, align 8, !tbaa !11
  %19 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %11, ptr noundef @.str, double noundef %18) #3
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = srem i32 %20, 80
  %22 = icmp eq i32 %21, 79
  br i1 %22, label %23, label %26

23:                                               ; preds = %10
  %24 = load ptr, ptr @stdout, align 8, !tbaa !9
  %25 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %24, ptr noundef @.str.1) #3
  br label %26

26:                                               ; preds = %23, %10
  br label %27

27:                                               ; preds = %26
  %28 = load i32, ptr %2, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %2, align 4, !tbaa !5
  br label %7, !llvm.loop !13

30:                                               ; preds = %7
  %31 = load ptr, ptr @stdout, align 8, !tbaa !9
  %32 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %31, ptr noundef @.str.1) #3
  br label %33

33:                                               ; preds = %30
  %34 = load i32, ptr %1, align 4, !tbaa !5
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %1, align 4, !tbaa !5
  br label %3, !llvm.loop !15

36:                                               ; preds = %3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  ret void
}

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #2

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 "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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"

@block = external dso_local local_unnamed_addr global [1024 x [1067 x double]], align 16
@stdout = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local void @print_array() local_unnamed_addr #0 {
  br label %.preheader

.preheader:                                       ; preds = %0, %12
  %indvars.iv11 = phi i64 [ 0, %0 ], [ %indvars.iv.next12, %12 ]
  br label %1

1:                                                ; preds = %.preheader, %11
  %indvars.iv = phi i64 [ 0, %.preheader ], [ %indvars.iv.next, %11 ]
  %2 = load ptr, ptr @stdout, align 8, !tbaa !5
  %3 = getelementptr inbounds [1024 x [1067 x double]], ptr @block, i64 0, i64 %indvars.iv11, i64 %indvars.iv
  %4 = load double, ptr %3, align 8, !tbaa !9
  %5 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %2, ptr noundef nonnull @.str, double noundef %4) #2
  %.lhs.trunc = trunc i64 %indvars.iv to i16
  %6 = urem i16 %.lhs.trunc, 80
  %7 = icmp eq i16 %6, 79
  br i1 %7, label %8, label %11

8:                                                ; preds = %1
  %9 = load ptr, ptr @stdout, align 8, !tbaa !5
  %10 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %9, ptr noundef nonnull @.str.1) #2
  br label %11

11:                                               ; preds = %1, %8
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, 1024
  br i1 %exitcond.not, label %12, label %1, !llvm.loop !11

12:                                               ; preds = %11
  %13 = load ptr, ptr @stdout, align 8, !tbaa !5
  %14 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %13, ptr noundef nonnull @.str.1) #2
  %indvars.iv.next12 = add nuw nsw i64 %indvars.iv11, 1
  %exitcond14.not = icmp eq i64 %indvars.iv.next12, 1024
  br i1 %exitcond14.not, label %15, label %.preheader, !llvm.loop !13

15:                                               ; preds = %12
  ret void
}

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #1

attributes #0 = { nofree 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 = { nofree 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 #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 = !{!"double", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LICMPass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass