; LLVM IR from jgaeddert/liquid-dsp :: src/matrix/src (matrixc)

; 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

declare { double, double } @__divdc3(double, double, double, double)

; Function Attrs: nounwind uwtable
define dso_local i32 @matrixc_pdiv(ptr noundef %0, ptr noundef %1, ptr noundef %2, i32 noundef %3, i32 noundef %4) #1 {
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store ptr %2, ptr %8, align 8, !tbaa !5
  store i32 %3, ptr %9, align 4, !tbaa !9
  store i32 %4, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  store i32 0, ptr %11, align 4, !tbaa !9
  br label %12

12:                                               ; preds = %44, %5
  %13 = load i32, ptr %11, align 4, !tbaa !9
  %14 = load i32, ptr %9, align 4, !tbaa !9
  %15 = load i32, ptr %10, align 4, !tbaa !9
  %16 = mul i32 %14, %15
  %17 = icmp ult i32 %13, %16
  br i1 %17, label %18, label %47

18:                                               ; preds = %12
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = load i32, ptr %11, align 4, !tbaa !9
  %21 = zext i32 %20 to i64
  %22 = getelementptr inbounds { double, double }, ptr %19, i64 %21
  %23 = getelementptr inbounds { double, double }, ptr %22, i32 0, i32 0
  %24 = load double, ptr %23, align 8
  %25 = getelementptr inbounds { double, double }, ptr %22, i32 0, i32 1
  %26 = load double, ptr %25, align 8
  %27 = load ptr, ptr %7, align 8, !tbaa !5
  %28 = load i32, ptr %11, align 4, !tbaa !9
  %29 = zext i32 %28 to i64
  %30 = getelementptr inbounds { double, double }, ptr %27, i64 %29
  %31 = getelementptr inbounds { double, double }, ptr %30, i32 0, i32 0
  %32 = load double, ptr %31, align 8
  %33 = getelementptr inbounds { double, double }, ptr %30, i32 0, i32 1
  %34 = load double, ptr %33, align 8
  %35 = call { double, double } @__divdc3(double noundef %24, double noundef %26, double noundef %32, double noundef %34) #2
  %36 = extractvalue { double, double } %35, 0
  %37 = extractvalue { double, double } %35, 1
  %38 = load ptr, ptr %8, align 8, !tbaa !5
  %39 = load i32, ptr %11, align 4, !tbaa !9
  %40 = zext i32 %39 to i64
  %41 = getelementptr inbounds { double, double }, ptr %38, i64 %40
  %42 = getelementptr inbounds { double, double }, ptr %41, i32 0, i32 0
  %43 = getelementptr inbounds { double, double }, ptr %41, i32 0, i32 1
  store double %36, ptr %42, align 8
  store double %37, ptr %43, align 8
  br label %44

44:                                               ; preds = %18
  %45 = load i32, ptr %11, align 4, !tbaa !9
  %46 = add i32 %45, 1
  store i32 %46, ptr %11, align 4, !tbaa !9
  br label %12, !llvm.loop !11

47:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  ret i32 0
}

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 = { 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 = 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"

declare { double, double } @__divdc3(double, double, double, double) local_unnamed_addr

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @matrixc_pdiv(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1, ptr nocapture noundef writeonly %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #0 {
  %6 = mul i32 %4, %3
  %.not = icmp eq i32 %6, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %5
  %wide.trip.count = zext i32 %6 to i64
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %7 = getelementptr inbounds { double, double }, ptr %0, i64 %indvars.iv
  %8 = load double, ptr %7, align 8
  %9 = getelementptr inbounds i8, ptr %7, i64 8
  %10 = load double, ptr %9, align 8
  %11 = getelementptr inbounds { double, double }, ptr %1, i64 %indvars.iv
  %12 = load double, ptr %11, align 8
  %13 = getelementptr inbounds i8, ptr %11, i64 8
  %14 = load double, ptr %13, align 8
  %15 = tail call { double, double } @__divdc3(double noundef %8, double noundef %10, double noundef %12, double noundef %14) #1
  %16 = extractvalue { double, double } %15, 0
  %17 = extractvalue { double, double } %15, 1
  %18 = getelementptr inbounds { double, double }, ptr %2, i64 %indvars.iv
  %19 = getelementptr inbounds i8, ptr %18, i64 8
  store double %16, ptr %18, align 8
  store double %17, ptr %19, align 8
  %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 %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %5
  ret i32 0
}

attributes #0 = { 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 #1 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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