; LLVM IR from suxiaojack/sapDecoder :: src/hrtf.ll (ZN4HRTF25ConvertShortToFloatVectorEPKsiPSt6vectorIfSaIfEE)

; 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.2 = external hidden unnamed_addr constant [68 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [12 x i8], align 1
@__PRETTY_FUNCTION__._ZN4HRTF25ConvertShortToFloatVectorEPKsiPSt6vectorIfSaIfEE = external hidden unnamed_addr constant [81 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [15 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: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4HRTF25ConvertShortToFloatVectorEPKsiPSt6vectorIfSaIfEE(ptr noundef %0, i32 noundef %1, ptr noundef %2) #2 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  %9 = load ptr, ptr %6, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %12

11:                                               ; preds = %3
  br label %14

12:                                               ; preds = %3
  call void @__assert_fail(ptr noundef @.str.5, ptr noundef @.str.2, i32 noundef 153, ptr noundef @__PRETTY_FUNCTION__._ZN4HRTF25ConvertShortToFloatVectorEPKsiPSt6vectorIfSaIfEE) #4
  unreachable

13:                                               ; No predecessors!
  br label %14

14:                                               ; preds = %13, %11
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = icmp ne ptr %15, null
  br i1 %16, label %17, label %18

17:                                               ; preds = %14
  br label %20

18:                                               ; preds = %14
  call void @__assert_fail(ptr noundef @.str.6, ptr noundef @.str.2, i32 noundef 154, ptr noundef @__PRETTY_FUNCTION__._ZN4HRTF25ConvertShortToFloatVectorEPKsiPSt6vectorIfSaIfEE) #4
  unreachable

19:                                               ; No predecessors!
  br label %20

20:                                               ; preds = %19, %17
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  call void @_ZNSt6vectorIfSaIfEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) %21, i64 noundef %23)
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %24, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %25

25:                                               ; preds = %40, %20
  %26 = load i32, ptr %8, align 4, !tbaa !9
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = icmp slt i32 %26, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  br label %45

30:                                               ; preds = %25
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  %32 = load i16, ptr %31, align 2, !tbaa !11
  %33 = sext i16 %32 to i32
  %34 = sitofp i32 %33 to float
  %35 = fdiv float %34, 3.276700e+04
  %36 = load ptr, ptr %6, align 8, !tbaa !5
  %37 = load i32, ptr %8, align 4, !tbaa !9
  %38 = sext i32 %37 to i64
  %39 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIfSaIfEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %36, i64 noundef %38) #5
  store float %35, ptr %39, align 4, !tbaa !13
  br label %40

40:                                               ; preds = %30
  %41 = load i32, ptr %8, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %8, align 4, !tbaa !9
  %43 = load ptr, ptr %7, align 8, !tbaa !5
  %44 = getelementptr inbounds i16, ptr %43, i32 1
  store ptr %44, ptr %7, align 8, !tbaa !5
  br label %25, !llvm.loop !15

45:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIfSaIfEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIfSaIfEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { noreturn 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 = { mustprogress 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 #3 = { mustprogress 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 #4 = { noreturn nounwind }
attributes #5 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"short", !7, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"float", !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"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.2 = external hidden unnamed_addr constant [68 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [12 x i8], align 1
@__PRETTY_FUNCTION__._ZN4HRTF25ConvertShortToFloatVectorEPKsiPSt6vectorIfSaIfEE = external hidden unnamed_addr constant [81 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [15 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4HRTF25ConvertShortToFloatVectorEPKsiPSt6vectorIfSaIfEE(ptr noundef readonly %0, i32 noundef %1, ptr noundef %2) local_unnamed_addr #1 align 2 {
  %.not = icmp eq ptr %2, null
  br i1 %.not, label %4, label %5

4:                                                ; preds = %3
  tail call void @__assert_fail(ptr noundef nonnull @.str.5, ptr noundef nonnull @.str.2, i32 noundef 153, ptr noundef nonnull @__PRETTY_FUNCTION__._ZN4HRTF25ConvertShortToFloatVectorEPKsiPSt6vectorIfSaIfEE) #3
  unreachable

5:                                                ; preds = %3
  %.not14 = icmp eq ptr %0, null
  br i1 %.not14, label %6, label %7

6:                                                ; preds = %5
  tail call void @__assert_fail(ptr noundef nonnull @.str.6, ptr noundef nonnull @.str.2, i32 noundef 154, ptr noundef nonnull @__PRETTY_FUNCTION__._ZN4HRTF25ConvertShortToFloatVectorEPKsiPSt6vectorIfSaIfEE) #3
  unreachable

7:                                                ; preds = %5
  %8 = sext i32 %1 to i64
  tail call void @_ZNSt6vectorIfSaIfEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %8)
  %9 = icmp sgt i32 %1, 0
  br i1 %9, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %7
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %7
  ret void

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %.01115 = phi ptr [ %0, %.lr.ph.preheader ], [ %14, %.lr.ph ]
  %10 = load i16, ptr %.01115, align 2, !tbaa !5
  %11 = sitofp i16 %10 to float
  %12 = fdiv float %11, 3.276700e+04
  %13 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIfSaIfEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #4
  store float %12, ptr %13, align 4, !tbaa !9
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %14 = getelementptr inbounds i8, ptr %.01115, i64 2
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIfSaIfEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIfSaIfEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

attributes #0 = { noreturn 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 #1 = { mustprogress 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 = { mustprogress 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 #3 = { noreturn nounwind }
attributes #4 = { 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 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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