; LLVM IR from jgaeddert/liquid-dsp :: examples (msequence_example)

; 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"

@.str = external hidden unnamed_addr constant [16 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [31 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %8 = call ptr @msequence_create_default(i32 noundef 5)
  store ptr %8, ptr %6, align 8, !tbaa !9
  %9 = load ptr, ptr %6, align 8, !tbaa !9
  %10 = call i32 @msequence_print(ptr noundef %9)
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %31, %2
  %12 = load i32, ptr %7, align 4, !tbaa !5
  %13 = load ptr, ptr %6, align 8, !tbaa !9
  %14 = call i32 @msequence_get_length(ptr noundef %13)
  %15 = icmp ult i32 %12, %14
  br i1 %15, label %16, label %34

16:                                               ; preds = %11
  %17 = load i32, ptr %7, align 4, !tbaa !5
  %18 = icmp ugt i32 %17, 0
  br i1 %18, label %19, label %25

19:                                               ; preds = %16
  %20 = load ptr, ptr %6, align 8, !tbaa !9
  %21 = call i32 @msequence_get_state(ptr noundef %20)
  %22 = icmp eq i32 %21, 1
  br i1 %22, label %23, label %25

23:                                               ; preds = %19
  %24 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  br label %34

25:                                               ; preds = %19, %16
  %26 = load ptr, ptr %6, align 8, !tbaa !9
  %27 = call i32 @msequence_get_state(ptr noundef %26)
  %28 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %27)
  %29 = load ptr, ptr %6, align 8, !tbaa !9
  %30 = call i32 @msequence_advance(ptr noundef %29)
  br label %31

31:                                               ; preds = %25
  %32 = load i32, ptr %7, align 4, !tbaa !5
  %33 = add i32 %32, 1
  store i32 %33, ptr %7, align 4, !tbaa !5
  br label %11, !llvm.loop !11

34:                                               ; preds = %23, %11
  %35 = load ptr, ptr %6, align 8, !tbaa !9
  %36 = call i32 @msequence_get_state(ptr noundef %35)
  %37 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %36)
  %38 = load ptr, ptr %6, align 8, !tbaa !9
  %39 = call i32 @msequence_destroy(ptr noundef %38)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  ret i32 0
}

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

declare ptr @msequence_create_default(i32 noundef) #2

declare i32 @msequence_print(ptr noundef) #2

declare i32 @msequence_get_length(ptr noundef) #2

declare i32 @msequence_get_state(ptr noundef) #2

declare i32 @printf(ptr noundef, ...) #2

declare i32 @msequence_advance(ptr noundef) #2

declare i32 @msequence_destroy(ptr noundef) #2

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

attributes #0 = { 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 = { "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 = distinct !{!11, !12}
!12 = !{!"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"

@.str = external hidden unnamed_addr constant [16 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [31 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #0 {
  %3 = tail call ptr @msequence_create_default(i32 noundef 5) #3
  %4 = tail call i32 @msequence_print(ptr noundef %3) #3
  %5 = tail call i32 @msequence_get_length(ptr noundef %3) #3
  %.not10 = icmp eq i32 %5, 0
  br i1 %.not10, label %.loopexit, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %6 = tail call i32 @msequence_get_state(ptr noundef %3) #3
  %7 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %6)
  %8 = tail call i32 @msequence_advance(ptr noundef %3) #3
  %9 = tail call i32 @msequence_get_length(ptr noundef %3) #3
  %10 = icmp ugt i32 %9, 1
  br i1 %10, label %.lr.ph.peel.next, label %.loopexit

.lr.ph.peel.next:                                 ; preds = %.lr.ph.preheader, %14
  %.09 = phi i32 [ %18, %14 ], [ 1, %.lr.ph.preheader ]
  %11 = tail call i32 @msequence_get_state(ptr noundef %3) #3
  %12 = icmp eq i32 %11, 1
  br i1 %12, label %.loopexit12, label %14

.loopexit12:                                      ; preds = %.lr.ph.peel.next
  %13 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  br label %.loopexit

14:                                               ; preds = %.lr.ph.peel.next
  %15 = tail call i32 @msequence_get_state(ptr noundef %3) #3
  %16 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %15)
  %17 = tail call i32 @msequence_advance(ptr noundef %3) #3
  %18 = add nuw i32 %.09, 1
  %19 = tail call i32 @msequence_get_length(ptr noundef %3) #3
  %20 = icmp ult i32 %18, %19
  br i1 %20, label %.lr.ph.peel.next, label %.loopexit, !llvm.loop !5

.loopexit:                                        ; preds = %14, %.lr.ph.preheader, %2, %.loopexit12
  %21 = tail call i32 @msequence_get_state(ptr noundef %3) #3
  %22 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %21)
  %23 = tail call i32 @msequence_destroy(ptr noundef %3) #3
  ret i32 0
}

declare ptr @msequence_create_default(i32 noundef) local_unnamed_addr #1

declare i32 @msequence_print(ptr noundef) local_unnamed_addr #1

declare i32 @msequence_get_length(ptr noundef) local_unnamed_addr #1

declare i32 @msequence_get_state(ptr noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

declare i32 @msequence_advance(ptr noundef) local_unnamed_addr #1

declare i32 @msequence_destroy(ptr noundef) local_unnamed_addr #1

attributes #0 = { 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 = { "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 = { 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 #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 = distinct !{!5, !6, !7}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!"llvm.loop.peeled.count", i32 1}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopFullUnrollPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass