; LLVM IR from jgaeddert/liquid-dsp :: src/filter/src (filter_cccf)

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

; 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
declare dso_local i32 @rresamp_cccf_execute(ptr noundef, ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @rresamp_cccf_execute_block(ptr noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  store ptr %3, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %31, %4
  %11 = load i32, ptr %9, align 4, !tbaa !9
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = icmp ult i32 %11, %12
  br i1 %13, label %14, label %34

14:                                               ; preds = %10
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = load ptr, ptr %8, align 8, !tbaa !5
  %18 = call i32 @rresamp_cccf_execute(ptr noundef %15, ptr noundef %16, ptr noundef %17)
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.rresamp_cccf_s, ptr %19, i32 0, i32 1
  %21 = load i32, ptr %20, align 4, !tbaa !11
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = zext i32 %21 to i64
  %24 = getelementptr inbounds { float, float }, ptr %22, i64 %23
  store ptr %24, ptr %6, align 8, !tbaa !5
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.rresamp_cccf_s, ptr %25, i32 0, i32 0
  %27 = load i32, ptr %26, align 8, !tbaa !13
  %28 = load ptr, ptr %8, align 8, !tbaa !5
  %29 = zext i32 %27 to i64
  %30 = getelementptr inbounds { float, float }, ptr %28, i64 %29
  store ptr %30, ptr %8, align 8, !tbaa !5
  br label %31

31:                                               ; preds = %14
  %32 = load i32, ptr %9, align 4, !tbaa !9
  %33 = add i32 %32, 1
  store i32 %33, ptr %9, align 4, !tbaa !9
  br label %10, !llvm.loop !14

34:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  ret i32 0
}

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 4}
!12 = !{!"rresamp_cccf_s", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !6, i64 16}
!13 = !{!12, !10, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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: nounwind uwtable
declare dso_local i32 @rresamp_cccf_execute(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @rresamp_cccf_execute_block(ptr noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3) local_unnamed_addr #0 {
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %4
  %5 = getelementptr inbounds i8, ptr %0, i64 4
  br label %6

6:                                                ; preds = %.lr.ph, %6
  %.013 = phi i32 [ 0, %.lr.ph ], [ %14, %6 ]
  %.0912 = phi ptr [ %3, %.lr.ph ], [ %13, %6 ]
  %.01011 = phi ptr [ %1, %.lr.ph ], [ %10, %6 ]
  %7 = tail call i32 @rresamp_cccf_execute(ptr noundef %0, ptr noundef %.01011, ptr noundef %.0912)
  %8 = load i32, ptr %5, align 4, !tbaa !5
  %9 = zext i32 %8 to i64
  %10 = getelementptr inbounds { float, float }, ptr %.01011, i64 %9
  %11 = load i32, ptr %0, align 8, !tbaa !11
  %12 = zext i32 %11 to i64
  %13 = getelementptr inbounds { float, float }, ptr %.0912, i64 %12
  %14 = add nuw i32 %.013, 1
  %exitcond.not = icmp eq i32 %14, %2
  br i1 %exitcond.not, label %._crit_edge, label %6, !llvm.loop !12

._crit_edge:                                      ; preds = %6, %4
  ret i32 0
}

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" }

!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, !7, i64 4}
!6 = !{!"rresamp_cccf_s", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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