; LLVM IR from sympiler/nasoq :: src/QP/nasoq_utils.ll (ZN5nasoq19scale_sparse_matrixEPNS_12sympiler_CSCEd)

; 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.nasoq::sympiler_CSC" = type { i64, i64, i64, ptr, ptr, ptr, ptr, ptr, i32, i32, i32, i32, i32, 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: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN5nasoq19scale_sparse_matrixEPNS_12sympiler_CSCEd(ptr noundef %0, double noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca double, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store double %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = getelementptr inbounds %"struct.nasoq::sympiler_CSC", ptr %7, i32 0, i32 2
  %9 = load i64, ptr %8, align 8, !tbaa !11
  store i64 %9, ptr %5, align 8, !tbaa !15
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !16
  br label %10

10:                                               ; preds = %32, %2
  %11 = load i32, ptr %6, align 4, !tbaa !16
  %12 = sext i32 %11 to i64
  %13 = load i64, ptr %5, align 8, !tbaa !15
  %14 = icmp ult i64 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %35

16:                                               ; preds = %10
  %17 = load double, ptr %4, align 8, !tbaa !9
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %"struct.nasoq::sympiler_CSC", ptr %18, i32 0, i32 6
  %20 = load ptr, ptr %19, align 8, !tbaa !17
  %21 = load i32, ptr %6, align 4, !tbaa !16
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds double, ptr %20, i64 %22
  %24 = load double, ptr %23, align 8, !tbaa !9
  %25 = fmul double %17, %24
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = getelementptr inbounds %"struct.nasoq::sympiler_CSC", ptr %26, i32 0, i32 6
  %28 = load ptr, ptr %27, align 8, !tbaa !17
  %29 = load i32, ptr %6, align 4, !tbaa !16
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds double, ptr %28, i64 %30
  store double %25, ptr %31, align 8, !tbaa !9
  br label %32

32:                                               ; preds = %16
  %33 = load i32, ptr %6, align 4, !tbaa !16
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %6, align 4, !tbaa !16
  br label %10, !llvm.loop !18

35:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret i32 1
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = !{!12, !13, i64 16}
!12 = !{!"_ZTSN5nasoq12sympiler_CSCE", !13, i64 0, !13, i64 8, !13, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48, !6, i64 56, !14, i64 64, !14, i64 68, !14, i64 72, !14, i64 76, !14, i64 80, !14, i64 84}
!13 = !{!"long", !7, i64 0}
!14 = !{!"int", !7, i64 0}
!15 = !{!13, !13, i64 0}
!16 = !{!14, !14, i64 0}
!17 = !{!12, !6, i64 48}
!18 = distinct !{!18, !19}
!19 = !{!"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 norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local noundef i32 @_ZN5nasoq19scale_sparse_matrixEPNS_12sympiler_CSCEd(ptr nocapture noundef readonly %0, double noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %.not = icmp eq i64 %4, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %5 = getelementptr inbounds i8, ptr %0, i64 48
  %6 = load ptr, ptr %5, align 8, !tbaa !12
  %min.iters.check = icmp ult i64 %4, 4
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.ph

scalar.ph.preheader:                              ; preds = %middle.block, %.lr.ph
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph ], [ %n.vec, %middle.block ]
  br label %scalar.ph

vector.ph:                                        ; preds = %.lr.ph
  %n.vec = and i64 %4, -4
  %broadcast.splatinsert = insertelement <2 x double> poison, double %1, i64 0
  %broadcast.splat = shufflevector <2 x double> %broadcast.splatinsert, <2 x double> poison, <2 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %7 = getelementptr inbounds double, ptr %6, i64 %index
  %8 = getelementptr inbounds i8, ptr %7, i64 16
  %wide.load = load <2 x double>, ptr %7, align 8, !tbaa !13
  %wide.load11 = load <2 x double>, ptr %8, align 8, !tbaa !13
  %9 = fmul <2 x double> %wide.load, %broadcast.splat
  %10 = fmul <2 x double> %wide.load11, %broadcast.splat
  store <2 x double> %9, ptr %7, align 8, !tbaa !13
  store <2 x double> %10, ptr %8, align 8, !tbaa !13
  %index.next = add nuw i64 %index, 4
  %11 = icmp eq i64 %index.next, %n.vec
  br i1 %11, label %middle.block, label %vector.body, !llvm.loop !15

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %4, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %scalar.ph.preheader

._crit_edge:                                      ; preds = %scalar.ph, %middle.block, %2
  ret i32 1

scalar.ph:                                        ; preds = %scalar.ph.preheader, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %scalar.ph ], [ %indvars.iv.ph, %scalar.ph.preheader ]
  %12 = getelementptr inbounds double, ptr %6, i64 %indvars.iv
  %13 = load double, ptr %12, align 8, !tbaa !13
  %14 = fmul double %13, %1
  store double %14, ptr %12, align 8, !tbaa !13
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %4
  br i1 %exitcond.not, label %._crit_edge, label %scalar.ph, !llvm.loop !19
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) 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" }

!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, !7, i64 16}
!6 = !{!"_ZTSN5nasoq12sympiler_CSCE", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !10, i64 48, !10, i64 56, !11, i64 64, !11, i64 68, !11, i64 72, !11, i64 76, !11, i64 80, !11, i64 84}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = !{!6, !10, i64 48}
!13 = !{!14, !14, i64 0}
!14 = !{!"double", !8, i64 0}
!15 = distinct !{!15, !16, !17, !18}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!"llvm.loop.isvectorized", i32 1}
!18 = !{!"llvm.loop.unroll.runtime.disable"}
!19 = distinct !{!19, !16, !18, !17}


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