; LLVM IR from jgaeddert/liquid-dsp :: src/dotprod/src (dotprod_crcf)

; 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.dotprod_crcf_s = type { ptr, i32 }

; 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 allocsize(0)
declare noalias ptr @malloc(i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @dotprod_crcf_create_rev(ptr noundef %0, i32 noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %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 8, ptr %5) #3
  %7 = call noalias ptr @malloc(i64 noundef 16) #4
  store ptr %7, ptr %5, align 8, !tbaa !5
  %8 = load i32, ptr %4, align 4, !tbaa !9
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.dotprod_crcf_s, ptr %9, i32 0, i32 1
  store i32 %8, ptr %10, align 8, !tbaa !11
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.dotprod_crcf_s, ptr %11, i32 0, i32 1
  %13 = load i32, ptr %12, align 8, !tbaa !11
  %14 = zext i32 %13 to i64
  %15 = mul i64 %14, 4
  %16 = call noalias ptr @malloc(i64 noundef %15) #4
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.dotprod_crcf_s, ptr %17, i32 0, i32 0
  store ptr %16, ptr %18, align 8, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %38, %2
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = load i32, ptr %4, align 4, !tbaa !9
  %22 = icmp ult i32 %20, %21
  br i1 %22, label %23, label %41

23:                                               ; preds = %19
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  %25 = load i32, ptr %4, align 4, !tbaa !9
  %26 = load i32, ptr %6, align 4, !tbaa !9
  %27 = sub i32 %25, %26
  %28 = sub i32 %27, 1
  %29 = zext i32 %28 to i64
  %30 = getelementptr inbounds float, ptr %24, i64 %29
  %31 = load float, ptr %30, align 4, !tbaa !14
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.dotprod_crcf_s, ptr %32, i32 0, i32 0
  %34 = load ptr, ptr %33, align 8, !tbaa !13
  %35 = load i32, ptr %6, align 4, !tbaa !9
  %36 = zext i32 %35 to i64
  %37 = getelementptr inbounds float, ptr %34, i64 %36
  store float %31, ptr %37, align 4, !tbaa !14
  br label %38

38:                                               ; preds = %23
  %39 = load i32, ptr %6, align 4, !tbaa !9
  %40 = add i32 %39, 1
  store i32 %40, ptr %6, align 4, !tbaa !9
  br label %19, !llvm.loop !16

41:                                               ; preds = %19
  %42 = load ptr, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret ptr %42
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind allocsize(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 = { 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 }
attributes #4 = { nounwind allocsize(0) }

!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 8}
!12 = !{!"dotprod_crcf_s", !6, i64 0, !10, i64 8}
!13 = !{!12, !6, i64 0}
!14 = !{!15, !15, i64 0}
!15 = !{!"float", !7, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"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 nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind memory(write, argmem: read, inaccessiblemem: readwrite) uwtable
define dso_local noalias noundef ptr @dotprod_crcf_create_rev(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #1 {
  %3 = tail call noalias dereferenceable_or_null(16) ptr @malloc(i64 noundef 16) #2
  %4 = getelementptr inbounds i8, ptr %3, i64 8
  store i32 %1, ptr %4, align 8, !tbaa !5
  %5 = zext i32 %1 to i64
  %6 = shl nuw nsw i64 %5, 2
  %7 = tail call noalias ptr @malloc(i64 noundef %6) #2
  store ptr %7, ptr %3, align 8, !tbaa !11
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %min.iters.check = icmp ult i32 %1, 16
  br i1 %min.iters.check, label %.lr.ph.preheader17, label %vector.scevcheck

vector.scevcheck:                                 ; preds = %.lr.ph.preheader
  %8 = add nsw i64 %5, -1
  %9 = add i32 %1, -1
  %10 = trunc i64 %8 to i32
  %11 = icmp ult i32 %9, %10
  %12 = icmp ugt i64 %8, 4294967295
  %13 = or i1 %11, %12
  br i1 %13, label %.lr.ph.preheader17, label %vector.ph

vector.ph:                                        ; preds = %vector.scevcheck
  %n.vec = and i64 %5, 4294967288
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %14 = trunc i64 %index to i32
  %15 = xor i32 %14, -1
  %16 = add i32 %15, %1
  %17 = zext i32 %16 to i64
  %18 = getelementptr inbounds float, ptr %0, i64 %17
  %19 = getelementptr inbounds i8, ptr %18, i64 -12
  %20 = getelementptr inbounds i8, ptr %18, i64 -28
  %wide.load = load <4 x float>, ptr %19, align 4, !tbaa !12
  %reverse = shufflevector <4 x float> %wide.load, <4 x float> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
  %wide.load15 = load <4 x float>, ptr %20, align 4, !tbaa !12
  %reverse16 = shufflevector <4 x float> %wide.load15, <4 x float> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
  %21 = getelementptr inbounds float, ptr %7, i64 %index
  %22 = getelementptr inbounds i8, ptr %21, i64 16
  store <4 x float> %reverse, ptr %21, align 4, !tbaa !12
  store <4 x float> %reverse16, ptr %22, align 4, !tbaa !12
  %index.next = add nuw i64 %index, 8
  %23 = icmp eq i64 %index.next, %n.vec
  br i1 %23, label %middle.block, label %vector.body, !llvm.loop !14

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %5
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader17

.lr.ph.preheader17:                               ; preds = %middle.block, %vector.scevcheck, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 0, %vector.scevcheck ], [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %5, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader17, %.lr.ph.prol
  %indvars.iv.prol = phi i64 [ %indvars.iv.next.prol, %.lr.ph.prol ], [ %indvars.iv.ph, %.lr.ph.preheader17 ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader17 ]
  %24 = trunc nuw i64 %indvars.iv.prol to i32
  %25 = xor i32 %24, -1
  %26 = add i32 %25, %1
  %27 = zext i32 %26 to i64
  %28 = getelementptr inbounds float, ptr %0, i64 %27
  %29 = load float, ptr %28, align 4, !tbaa !12
  %30 = getelementptr inbounds float, ptr %7, i64 %indvars.iv.prol
  store float %29, ptr %30, align 4, !tbaa !12
  %indvars.iv.next.prol = add nuw nsw i64 %indvars.iv.prol, 1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !18

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader17
  %indvars.iv.unr = phi i64 [ %indvars.iv.ph, %.lr.ph.preheader17 ], [ %indvars.iv.next.prol, %.lr.ph.prol ]
  %31 = sub nsw i64 %indvars.iv.ph, %5
  %32 = icmp ugt i64 %31, -4
  br i1 %32, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next.3, %.lr.ph ], [ %indvars.iv.unr, %.lr.ph.prol.loopexit ]
  %33 = trunc nuw i64 %indvars.iv to i32
  %34 = xor i32 %33, -1
  %35 = add i32 %34, %1
  %36 = zext i32 %35 to i64
  %37 = getelementptr inbounds float, ptr %0, i64 %36
  %38 = load float, ptr %37, align 4, !tbaa !12
  %39 = getelementptr inbounds float, ptr %7, i64 %indvars.iv
  store float %38, ptr %39, align 4, !tbaa !12
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %40 = trunc nuw i64 %indvars.iv.next to i32
  %41 = xor i32 %40, -1
  %42 = add i32 %41, %1
  %43 = zext i32 %42 to i64
  %44 = getelementptr inbounds float, ptr %0, i64 %43
  %45 = load float, ptr %44, align 4, !tbaa !12
  %46 = getelementptr inbounds float, ptr %7, i64 %indvars.iv.next
  store float %45, ptr %46, align 4, !tbaa !12
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %47 = trunc nuw i64 %indvars.iv.next.1 to i32
  %48 = xor i32 %47, -1
  %49 = add i32 %48, %1
  %50 = zext i32 %49 to i64
  %51 = getelementptr inbounds float, ptr %0, i64 %50
  %52 = load float, ptr %51, align 4, !tbaa !12
  %53 = getelementptr inbounds float, ptr %7, i64 %indvars.iv.next.1
  store float %52, ptr %53, align 4, !tbaa !12
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %54 = trunc nuw i64 %indvars.iv.next.2 to i32
  %55 = xor i32 %54, -1
  %56 = add i32 %55, %1
  %57 = zext i32 %56 to i64
  %58 = getelementptr inbounds float, ptr %0, i64 %57
  %59 = load float, ptr %58, align 4, !tbaa !12
  %60 = getelementptr inbounds float, ptr %7, i64 %indvars.iv.next.2
  store float %59, ptr %60, align 4, !tbaa !12
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %exitcond.not.3 = icmp eq i64 %indvars.iv.next.3, %5
  br i1 %exitcond.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !20

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %middle.block, %2
  ret ptr %3
}

attributes #0 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 memory(write, argmem: read, inaccessiblemem: readwrite) 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 = { nounwind allocsize(0) }

!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, !10, i64 8}
!6 = !{!"dotprod_crcf_s", !7, i64 0, !10, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"float", !8, i64 0}
!14 = distinct !{!14, !15, !16, !17}
!15 = !{!"llvm.loop.mustprogress"}
!16 = !{!"llvm.loop.isvectorized", i32 1}
!17 = !{!"llvm.loop.unroll.runtime.disable"}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.unroll.disable"}
!20 = distinct !{!20, !15, !16}


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