; LLVM IR from goldest-star/seawave-animation :: src/vcl/wrapper/perlin/perlin.ll (ZN3vcl6perlinEffiff)

; 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 speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef float @_ZN3vcl6perlinEffiff(float noundef %0, float noundef %1, i32 noundef %2, float noundef %3, float noundef %4) #2 {
  %6 = alloca float, align 4
  %7 = alloca float, align 4
  %8 = alloca i32, align 4
  %9 = alloca float, align 4
  %10 = alloca float, align 4
  %11 = alloca float, align 4
  %12 = alloca float, align 4
  %13 = alloca float, align 4
  %14 = alloca i32, align 4
  %15 = alloca float, align 4
  store float %0, ptr %6, align 4, !tbaa !5
  store float %1, ptr %7, align 4, !tbaa !5
  store i32 %2, ptr %8, align 4, !tbaa !9
  store float %3, ptr %9, align 4, !tbaa !5
  store float %4, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #4
  store float 0.000000e+00, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  store float 1.000000e+00, ptr %12, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #4
  store float 1.000000e+00, ptr %13, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #4
  store i32 0, ptr %14, align 4, !tbaa !9
  br label %16

16:                                               ; preds = %43, %5
  %17 = load i32, ptr %14, align 4, !tbaa !9
  %18 = load i32, ptr %8, align 4, !tbaa !9
  %19 = icmp slt i32 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  br label %46

21:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #4
  %22 = load float, ptr %6, align 4, !tbaa !5
  %23 = load float, ptr %13, align 4, !tbaa !5
  %24 = fmul float %22, %23
  %25 = fpext float %24 to double
  %26 = load float, ptr %7, align 4, !tbaa !5
  %27 = load float, ptr %13, align 4, !tbaa !5
  %28 = fmul float %26, %27
  %29 = fpext float %28 to double
  %30 = call noundef double @_Z7snoise2dd(double noundef %25, double noundef %29)
  %31 = fptrunc double %30 to float
  store float %31, ptr %15, align 4, !tbaa !5
  %32 = load float, ptr %12, align 4, !tbaa !5
  %33 = load float, ptr %15, align 4, !tbaa !5
  %34 = call float @llvm.fmuladd.f32(float 5.000000e-01, float %33, float 5.000000e-01)
  %35 = load float, ptr %11, align 4, !tbaa !5
  %36 = call float @llvm.fmuladd.f32(float %32, float %34, float %35)
  store float %36, ptr %11, align 4, !tbaa !5
  %37 = load float, ptr %10, align 4, !tbaa !5
  %38 = load float, ptr %13, align 4, !tbaa !5
  %39 = fmul float %38, %37
  store float %39, ptr %13, align 4, !tbaa !5
  %40 = load float, ptr %9, align 4, !tbaa !5
  %41 = load float, ptr %12, align 4, !tbaa !5
  %42 = fmul float %41, %40
  store float %42, ptr %12, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #4
  br label %43

43:                                               ; preds = %21
  %44 = load i32, ptr %14, align 4, !tbaa !9
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %14, align 4, !tbaa !9
  br label %16, !llvm.loop !11

46:                                               ; preds = %20
  %47 = load float, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #4
  ret float %47
}

declare noundef double @_Z7snoise2dd(double noundef, double noundef) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = { "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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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"

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef float @_ZN3vcl6perlinEffiff(float noundef %0, float noundef %1, i32 noundef %2, float noundef %3, float noundef %4) local_unnamed_addr #1 {
  %6 = icmp sgt i32 %2, 0
  br i1 %6, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %5
  %.0.lcssa = phi float [ 0.000000e+00, %5 ], [ %14, %.lr.ph ]
  ret float %.0.lcssa

.lr.ph:                                           ; preds = %5, %.lr.ph
  %.020 = phi float [ %14, %.lr.ph ], [ 0.000000e+00, %5 ]
  %.01419 = phi i32 [ %17, %.lr.ph ], [ 0, %5 ]
  %.01518 = phi float [ %15, %.lr.ph ], [ 1.000000e+00, %5 ]
  %.01617 = phi float [ %16, %.lr.ph ], [ 1.000000e+00, %5 ]
  %7 = fmul float %.01518, %0
  %8 = fpext float %7 to double
  %9 = fmul float %.01518, %1
  %10 = fpext float %9 to double
  %11 = tail call noundef double @_Z7snoise2dd(double noundef %8, double noundef %10)
  %12 = fptrunc double %11 to float
  %13 = tail call float @llvm.fmuladd.f32(float %12, float 5.000000e-01, float 5.000000e-01)
  %14 = tail call float @llvm.fmuladd.f32(float %.01617, float %13, float %.020)
  %15 = fmul float %.01518, %4
  %16 = fmul float %.01617, %3
  %17 = add nuw nsw i32 %.01419, 1
  %exitcond.not = icmp eq i32 %17, %2
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5
}

declare noundef double @_Z7snoise2dd(double noundef, double noundef) local_unnamed_addr #2

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = { "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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass