; LLVM IR from aacoppa/flaming-flamingos :: src/matrix (matrix)

; 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.matrix = type { i32, i32, ptr }

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

10:                                               ; preds = %36, %3
  %11 = load i32, ptr %6, align 4, !tbaa !9
  %12 = getelementptr inbounds %struct.matrix, ptr %4, i32 0, i32 0
  %13 = load i32, ptr %12, align 8, !tbaa !11
  %14 = icmp slt i32 %11, %13
  br i1 %14, label %15, label %39

15:                                               ; preds = %10
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %16

16:                                               ; preds = %32, %15
  %17 = load i32, ptr %7, align 4, !tbaa !9
  %18 = getelementptr inbounds %struct.matrix, ptr %4, i32 0, i32 1
  %19 = load i32, ptr %18, align 4, !tbaa !14
  %20 = icmp slt i32 %17, %19
  br i1 %20, label %21, label %35

21:                                               ; preds = %16
  %22 = load double, ptr %5, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.matrix, ptr %4, i32 0, i32 2
  %24 = load ptr, ptr %23, align 8, !tbaa !15
  %25 = load i32, ptr %6, align 4, !tbaa !9
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds ptr, ptr %24, i64 %26
  %28 = load ptr, ptr %27, align 8, !tbaa !16
  %29 = load i32, ptr %7, align 4, !tbaa !9
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds double, ptr %28, i64 %30
  store double %22, ptr %31, align 8, !tbaa !5
  br label %32

32:                                               ; preds = %21
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %7, align 4, !tbaa !9
  br label %16, !llvm.loop !17

35:                                               ; preds = %16
  br label %36

36:                                               ; preds = %35
  %37 = load i32, ptr %6, align 4, !tbaa !9
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %6, align 4, !tbaa !9
  br label %10, !llvm.loop !19

39:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  ret void
}

; 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

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"double", !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 0}
!12 = !{!"", !10, i64 0, !10, i64 4, !13, i64 8}
!13 = !{!"any pointer", !7, i64 0}
!14 = !{!12, !10, i64 4}
!15 = !{!12, !13, i64 8}
!16 = !{!13, !13, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}
!19 = distinct !{!19, !18}


; 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: nofree norecurse nosync nounwind memory(write, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local void @fill_matrix(i64 %0, ptr nocapture readonly %1, double noundef %2) local_unnamed_addr #0 {
  %.sroa.0.0.extract.trunc = trunc i64 %0 to i32
  %.sroa.2.0.extract.shift = lshr i64 %0, 32
  %4 = icmp sgt i32 %.sroa.0.0.extract.trunc, 0
  %.sroa.2.0.extract.trunc = trunc nuw i64 %.sroa.2.0.extract.shift to i32
  %5 = icmp sgt i32 %.sroa.2.0.extract.trunc, 0
  %or.cond = select i1 %4, i1 %5, i1 false
  br i1 %or.cond, label %.preheader.us.preheader, label %._crit_edge9

.preheader.us.preheader:                          ; preds = %3
  %wide.trip.count15 = and i64 %0, 2147483647
  %min.iters.check = icmp ult i64 %0, 17179869184
  %n.vec = and i64 %.sroa.2.0.extract.shift, 2147483644
  %broadcast.splatinsert = insertelement <2 x double> poison, double %2, i64 0
  %broadcast.splat = shufflevector <2 x double> %broadcast.splatinsert, <2 x double> poison, <2 x i32> zeroinitializer
  %cmp.n = icmp eq i64 %.sroa.2.0.extract.shift, %n.vec
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge.us
  %indvars.iv12 = phi i64 [ 0, %.preheader.us.preheader ], [ %indvars.iv.next13, %._crit_edge.us ]
  %6 = getelementptr inbounds ptr, ptr %1, i64 %indvars.iv12
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.body

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

middle.block:                                     ; preds = %vector.body
  br i1 %cmp.n, label %._crit_edge.us, label %scalar.ph.preheader

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

scalar.ph:                                        ; preds = %scalar.ph.preheader, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %scalar.ph ], [ %indvars.iv.ph, %scalar.ph.preheader ]
  %11 = getelementptr inbounds double, ptr %7, i64 %indvars.iv
  store double %2, ptr %11, align 8, !tbaa !9
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %.sroa.2.0.extract.shift
  br i1 %exitcond.not, label %._crit_edge.us, label %scalar.ph, !llvm.loop !15

._crit_edge.us:                                   ; preds = %scalar.ph, %middle.block
  %indvars.iv.next13 = add nuw nsw i64 %indvars.iv12, 1
  %exitcond16.not = icmp eq i64 %indvars.iv.next13, %wide.trip.count15
  br i1 %exitcond16.not, label %._crit_edge9, label %.preheader.us, !llvm.loop !16

._crit_edge9:                                     ; preds = %._crit_edge.us, %3
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(write, argmem: 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, !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 = !{!"double", !7, i64 0}
!11 = distinct !{!11, !12, !13, !14}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!"llvm.loop.isvectorized", i32 1}
!14 = !{!"llvm.loop.unroll.runtime.disable"}
!15 = distinct !{!15, !12, !14, !13}
!16 = distinct !{!16, !12}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass