; LLVM IR from introlab/odas :: src/signal (tau)

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

@.str = external hidden unnamed_addr constant [9 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.2 = 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 @taus_printf(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %5

5:                                                ; preds = %55, %1
  %6 = load i32, ptr %3, align 4, !tbaa !9
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.taus_obj, ptr %7, i32 0, i32 0
  %9 = load i32, ptr %8, align 8, !tbaa !11
  %10 = icmp ult i32 %6, %9
  br i1 %10, label %11, label %58

11:                                               ; preds = %5
  %12 = load i32, ptr %3, align 4, !tbaa !9
  %13 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %12)
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %50, %11
  %15 = load i32, ptr %4, align 4, !tbaa !9
  %16 = load ptr, ptr %2, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.taus_obj, ptr %16, i32 0, i32 1
  %18 = load i32, ptr %17, align 4, !tbaa !13
  %19 = icmp ult i32 %15, %18
  br i1 %19, label %20, label %53

20:                                               ; preds = %14
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.taus_obj, ptr %21, i32 0, i32 2
  %23 = load ptr, ptr %22, align 8, !tbaa !14
  %24 = load i32, ptr %3, align 4, !tbaa !9
  %25 = load ptr, ptr %2, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.taus_obj, ptr %25, i32 0, i32 1
  %27 = load i32, ptr %26, align 4, !tbaa !13
  %28 = mul i32 %24, %27
  %29 = load i32, ptr %4, align 4, !tbaa !9
  %30 = add i32 %28, %29
  %31 = zext i32 %30 to i64
  %32 = getelementptr inbounds float, ptr %23, i64 %31
  %33 = load float, ptr %32, align 4, !tbaa !15
  %34 = fpext float %33 to double
  %35 = load ptr, ptr %2, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.taus_obj, ptr %35, i32 0, i32 3
  %37 = load ptr, ptr %36, align 8, !tbaa !17
  %38 = load i32, ptr %3, align 4, !tbaa !9
  %39 = load ptr, ptr %2, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.taus_obj, ptr %39, i32 0, i32 1
  %41 = load i32, ptr %40, align 4, !tbaa !13
  %42 = mul i32 %38, %41
  %43 = load i32, ptr %4, align 4, !tbaa !9
  %44 = add i32 %42, %43
  %45 = zext i32 %44 to i64
  %46 = getelementptr inbounds float, ptr %37, i64 %45
  %47 = load float, ptr %46, align 4, !tbaa !15
  %48 = fpext float %47 to double
  %49 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, double noundef %34, double noundef %48)
  br label %50

50:                                               ; preds = %20
  %51 = load i32, ptr %4, align 4, !tbaa !9
  %52 = add i32 %51, 1
  store i32 %52, ptr %4, align 4, !tbaa !9
  br label %14, !llvm.loop !18

53:                                               ; preds = %14
  %54 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %55

55:                                               ; preds = %53
  %56 = load i32, ptr %3, align 4, !tbaa !9
  %57 = add i32 %56, 1
  store i32 %57, ptr %3, align 4, !tbaa !9
  br label %5, !llvm.loop !20

58:                                               ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret void
}

declare i32 @printf(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 = { "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 = !{!"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 0}
!12 = !{!"taus_obj", !10, i64 0, !10, i64 4, !6, i64 8, !6, i64 16}
!13 = !{!12, !10, i64 4}
!14 = !{!12, !6, i64 8}
!15 = !{!16, !16, i64 0}
!16 = !{!"float", !7, i64 0}
!17 = !{!12, !6, i64 16}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}
!20 = distinct !{!20, !19}


; 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 [9 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local void @taus_printf(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i32, ptr %0, align 8, !tbaa !5
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %._crit_edge20, label %.lr.ph19

.lr.ph19:                                         ; preds = %1
  %3 = getelementptr inbounds i8, ptr %0, i64 4
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  br label %6

6:                                                ; preds = %.lr.ph19, %._crit_edge
  %.01417 = phi i32 [ 0, %.lr.ph19 ], [ %26, %._crit_edge ]
  %7 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %.01417)
  %8 = load i32, ptr %3, align 4, !tbaa !11
  %.not21 = icmp eq i32 %8, 0
  br i1 %.not21, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %6, %.lr.ph
  %9 = phi i32 [ %23, %.lr.ph ], [ %8, %6 ]
  %.016 = phi i32 [ %22, %.lr.ph ], [ 0, %6 ]
  %10 = load ptr, ptr %4, align 8, !tbaa !12
  %11 = mul i32 %9, %.01417
  %12 = add i32 %11, %.016
  %13 = zext i32 %12 to i64
  %14 = getelementptr inbounds float, ptr %10, i64 %13
  %15 = load float, ptr %14, align 4, !tbaa !13
  %16 = fpext float %15 to double
  %17 = load ptr, ptr %5, align 8, !tbaa !15
  %18 = getelementptr inbounds float, ptr %17, i64 %13
  %19 = load float, ptr %18, align 4, !tbaa !13
  %20 = fpext float %19 to double
  %21 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, double noundef %16, double noundef %20)
  %22 = add nuw i32 %.016, 1
  %23 = load i32, ptr %3, align 4, !tbaa !11
  %24 = icmp ult i32 %22, %23
  br i1 %24, label %.lr.ph, label %._crit_edge, !llvm.loop !16

._crit_edge:                                      ; preds = %.lr.ph, %6
  %25 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  %26 = add nuw i32 %.01417, 1
  %27 = load i32, ptr %0, align 8, !tbaa !5
  %28 = icmp ult i32 %26, %27
  br i1 %28, label %6, label %._crit_edge20, !llvm.loop !18

._crit_edge20:                                    ; preds = %._crit_edge, %1
  ret void
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(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" }

!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 0}
!6 = !{!"taus_obj", !7, i64 0, !7, i64 4, !10, i64 8, !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 4}
!12 = !{!6, !10, i64 8}
!13 = !{!14, !14, i64 0}
!14 = !{!"float", !8, i64 0}
!15 = !{!6, !10, i64 16}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}
!18 = distinct !{!18, !17}


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