; LLVM IR from jgaeddert/liquid-dsp :: src/optim/src (utilities)

; 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 = external hidden unnamed_addr constant [80 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [54 x i8], align 1

declare i32 @liquid_error_fl(i32 noundef, ptr noundef, i32 noundef, ptr noundef, ...) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local float @liquid_invgauss(ptr noundef %0, ptr noundef %1, i32 noundef %2) #2 {
  %4 = alloca float, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca float, align 4
  %9 = alloca float, align 4
  %10 = 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
  %11 = load i32, ptr %7, align 4, !tbaa !9
  %12 = icmp eq i32 %11, 0
  br i1 %12, label %13, label %15

13:                                               ; preds = %3
  %14 = call i32 (i32, ptr, i32, ptr, ...) @liquid_error_fl(i32 noundef 3, ptr noundef @.str, i32 noundef 60, ptr noundef @.str.2)
  store float 0.000000e+00, ptr %4, align 4
  br label %50

15:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store float 0.000000e+00, ptr %8, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  store float 1.000000e+00, ptr %9, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %16

16:                                               ; preds = %42, %15
  %17 = load i32, ptr %10, align 4, !tbaa !9
  %18 = load i32, ptr %7, align 4, !tbaa !9
  %19 = icmp ult i32 %17, %18
  br i1 %19, label %20, label %45

20:                                               ; preds = %16
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = load i32, ptr %10, align 4, !tbaa !9
  %23 = zext i32 %22 to i64
  %24 = getelementptr inbounds float, ptr %21, i64 %23
  %25 = load float, ptr %24, align 4, !tbaa !11
  %26 = fsub float %25, 1.000000e+00
  %27 = load ptr, ptr %6, align 8, !tbaa !5
  %28 = load i32, ptr %10, align 4, !tbaa !9
  %29 = zext i32 %28 to i64
  %30 = getelementptr inbounds float, ptr %27, i64 %29
  %31 = load float, ptr %30, align 4, !tbaa !11
  %32 = fsub float %31, 1.000000e+00
  %33 = fmul float %26, %32
  %34 = load float, ptr %9, align 4, !tbaa !11
  %35 = load float, ptr %9, align 4, !tbaa !11
  %36 = fmul float %34, %35
  %37 = fdiv float %33, %36
  %38 = load float, ptr %8, align 4, !tbaa !11
  %39 = fadd float %38, %37
  store float %39, ptr %8, align 4, !tbaa !11
  %40 = load float, ptr %9, align 4, !tbaa !11
  %41 = fmul float %40, 1.500000e+00
  store float %41, ptr %9, align 4, !tbaa !11
  br label %42

42:                                               ; preds = %20
  %43 = load i32, ptr %10, align 4, !tbaa !9
  %44 = add i32 %43, 1
  store i32 %44, ptr %10, align 4, !tbaa !9
  br label %16, !llvm.loop !13

45:                                               ; preds = %16
  %46 = load float, ptr %8, align 4, !tbaa !11
  %47 = fneg float %46
  %48 = call float @expf(float noundef %47) #4, !tbaa !9
  %49 = fsub float 1.000000e+00, %48
  store float %49, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %50

50:                                               ; preds = %45, %13
  %51 = load float, ptr %4, align 4
  ret float %51
}

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

attributes #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 = { 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"

@.str = external hidden unnamed_addr constant [80 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [54 x i8], align 1

declare i32 @liquid_error_fl(i32 noundef, ptr noundef, i32 noundef, ptr noundef, ...) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local float @liquid_invgauss(ptr nocapture noundef readnone %0, ptr nocapture noundef readonly %1, i32 noundef %2) local_unnamed_addr #1 {
  %4 = icmp eq i32 %2, 0
  br i1 %4, label %6, label %.preheader.preheader

.preheader.preheader:                             ; preds = %3
  %wide.trip.count = zext i32 %2 to i64
  %xtraiter = and i64 %wide.trip.count, 1
  %5 = icmp eq i32 %2, 1
  br i1 %5, label %.unr-lcssa, label %.preheader.preheader.new

.preheader.preheader.new:                         ; preds = %.preheader.preheader
  %unroll_iter = and i64 %wide.trip.count, 4294967294
  br label %.preheader

6:                                                ; preds = %3
  %7 = tail call i32 (i32, ptr, i32, ptr, ...) @liquid_error_fl(i32 noundef 3, ptr noundef nonnull @.str, i32 noundef 60, ptr noundef nonnull @.str.2) #3
  br label %35

.preheader:                                       ; preds = %.preheader, %.preheader.preheader.new
  %indvars.iv = phi i64 [ 0, %.preheader.preheader.new ], [ %indvars.iv.next.1, %.preheader ]
  %.01318 = phi float [ 1.000000e+00, %.preheader.preheader.new ], [ %23, %.preheader ]
  %.01417 = phi float [ 0.000000e+00, %.preheader.preheader.new ], [ %22, %.preheader ]
  %niter = phi i64 [ 0, %.preheader.preheader.new ], [ %niter.next.1, %.preheader ]
  %8 = getelementptr inbounds float, ptr %1, i64 %indvars.iv
  %9 = load float, ptr %8, align 4, !tbaa !5
  %10 = fadd float %9, -1.000000e+00
  %11 = fmul float %10, %10
  %12 = fmul float %.01318, %.01318
  %13 = fdiv float %11, %12
  %14 = fadd float %.01417, %13
  %15 = fmul float %.01318, 1.500000e+00
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %16 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next
  %17 = load float, ptr %16, align 4, !tbaa !5
  %18 = fadd float %17, -1.000000e+00
  %19 = fmul float %18, %18
  %20 = fmul float %15, %15
  %21 = fdiv float %19, %20
  %22 = fadd float %14, %21
  %23 = fmul float %15, 1.500000e+00
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %.unr-lcssa, label %.preheader, !llvm.loop !9

.unr-lcssa:                                       ; preds = %.preheader, %.preheader.preheader
  %.lcssa.ph = phi float [ poison, %.preheader.preheader ], [ %22, %.preheader ]
  %indvars.iv.unr = phi i64 [ 0, %.preheader.preheader ], [ %indvars.iv.next.1, %.preheader ]
  %.01318.unr = phi float [ 1.000000e+00, %.preheader.preheader ], [ %23, %.preheader ]
  %.01417.unr = phi float [ 0.000000e+00, %.preheader.preheader ], [ %22, %.preheader ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %31, label %.preheader.epil

.preheader.epil:                                  ; preds = %.unr-lcssa
  %24 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.unr
  %25 = load float, ptr %24, align 4, !tbaa !5
  %26 = fadd float %25, -1.000000e+00
  %27 = fmul float %26, %26
  %28 = fmul float %.01318.unr, %.01318.unr
  %29 = fdiv float %27, %28
  %30 = fadd float %.01417.unr, %29
  br label %31

31:                                               ; preds = %.unr-lcssa, %.preheader.epil
  %.lcssa = phi float [ %.lcssa.ph, %.unr-lcssa ], [ %30, %.preheader.epil ]
  %32 = fneg float %.lcssa
  %33 = tail call float @expf(float noundef %32) #3, !tbaa !11
  %34 = fsub float 1.000000e+00, %33
  br label %35

35:                                               ; preds = %31, %6
  %.015 = phi float [ 0.000000e+00, %6 ], [ %34, %31 ]
  ret float %.015
}

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

attributes #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 = { 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 = { 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"}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass