; LLVM IR from reworks-org/galaxy :: deps/sfml_deps/flac-src/src/libFLAC/window.ll_FLAC (window_bartlett_hann)

; 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"

; 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 @FLAC__window_bartlett_hann(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = sub nsw i32 %7, 1
  store i32 %8, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %36, %2
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = load i32, ptr %4, align 4, !tbaa !9
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %13, label %39

13:                                               ; preds = %9
  %14 = load i32, ptr %6, align 4, !tbaa !9
  %15 = sitofp i32 %14 to float
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = sitofp i32 %16 to float
  %18 = fdiv float %15, %17
  %19 = fsub float %18, 5.000000e-01
  %20 = call float @llvm.fabs.f32(float %19)
  %21 = call float @llvm.fmuladd.f32(float 0xBFDEB851E0000000, float %20, float 0x3FE3D70A40000000)
  %22 = load i32, ptr %6, align 4, !tbaa !9
  %23 = sitofp i32 %22 to float
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = sitofp i32 %24 to float
  %26 = fdiv float %23, %25
  %27 = fpext float %26 to double
  %28 = fmul double 0x401921FB54442D18, %27
  %29 = fptrunc double %28 to float
  %30 = call float @cosf(float noundef %29) #4
  %31 = call float @llvm.fmuladd.f32(float 0xBFD851EB80000000, float %30, float %21)
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = load i32, ptr %6, align 4, !tbaa !9
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds float, ptr %32, i64 %34
  store float %31, ptr %35, align 4, !tbaa !11
  br label %36

36:                                               ; preds = %13
  %37 = load i32, ptr %6, align 4, !tbaa !9
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %6, align 4, !tbaa !9
  br label %9, !llvm.loop !13

39:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fabs.f32(float) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #2

; Function Attrs: nounwind
declare float @cosf(float noundef) #3

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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { 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 #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 = !{!"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, !12, i64 0}
!12 = !{!"float", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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: nofree nounwind memory(write) uwtable
define dso_local void @FLAC__window_bartlett_hann(ptr nocapture noundef writeonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 0
  br i1 %3, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %4 = add nsw i32 %1, -1
  %5 = uitofp nneg i32 %4 to float
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %6

6:                                                ; preds = %.lr.ph, %6
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %6 ]
  %7 = trunc nuw nsw i64 %indvars.iv to i32
  %8 = uitofp nneg i32 %7 to float
  %9 = fdiv float %8, %5
  %10 = fadd float %9, -5.000000e-01
  %11 = tail call float @llvm.fabs.f32(float %10)
  %12 = tail call float @llvm.fmuladd.f32(float %11, float 0xBFDEB851E0000000, float 0x3FE3D70A40000000)
  %13 = fpext float %9 to double
  %14 = fmul double %13, 0x401921FB54442D18
  %15 = fptrunc double %14 to float
  %16 = tail call float @cosf(float noundef %15) #3
  %17 = tail call float @llvm.fmuladd.f32(float %16, float 0xBFD851EB80000000, float %12)
  %18 = getelementptr inbounds float, ptr %0, i64 %indvars.iv
  store float %17, ptr %18, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %6, !llvm.loop !9

._crit_edge:                                      ; preds = %6, %2
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fabs.f32(float) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #1

; Function Attrs: mustprogress nofree nounwind willreturn memory(write)
declare float @cosf(float noundef) local_unnamed_addr #2

attributes #0 = { nofree nounwind memory(write) 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 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { mustprogress nofree nounwind willreturn memory(write) "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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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