; 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
declare dso_local { i64, ptr } @init_matrix(i32 noundef, i32 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 { i64, ptr } @copy_matrix(i64 %0, ptr %1) #0 {
  %3 = alloca %struct.matrix, align 8
  %4 = alloca %struct.matrix, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = getelementptr inbounds { i64, ptr }, ptr %4, i32 0, i32 0
  store i64 %0, ptr %7, align 8
  %8 = getelementptr inbounds { i64, ptr }, ptr %4, i32 0, i32 1
  store ptr %1, ptr %8, align 8
  %9 = getelementptr inbounds %struct.matrix, ptr %4, i32 0, i32 0
  %10 = load i32, ptr %9, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.matrix, ptr %4, i32 0, i32 1
  %12 = load i32, ptr %11, align 4, !tbaa !11
  %13 = call { i64, ptr } @init_matrix(i32 noundef %10, i32 noundef %12)
  %14 = getelementptr inbounds { i64, ptr }, ptr %3, i32 0, i32 0
  %15 = extractvalue { i64, ptr } %13, 0
  store i64 %15, ptr %14, align 8
  %16 = getelementptr inbounds { i64, ptr }, ptr %3, i32 0, i32 1
  %17 = extractvalue { i64, ptr } %13, 1
  store ptr %17, ptr %16, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %5, align 4, !tbaa !12
  br label %18

18:                                               ; preds = %53, %2
  %19 = load i32, ptr %5, align 4, !tbaa !12
  %20 = getelementptr inbounds %struct.matrix, ptr %3, i32 0, i32 0
  %21 = load i32, ptr %20, align 8, !tbaa !5
  %22 = icmp slt i32 %19, %21
  br i1 %22, label %23, label %56

23:                                               ; preds = %18
  store i32 0, ptr %6, align 4, !tbaa !12
  br label %24

24:                                               ; preds = %49, %23
  %25 = load i32, ptr %6, align 4, !tbaa !12
  %26 = getelementptr inbounds %struct.matrix, ptr %3, i32 0, i32 1
  %27 = load i32, ptr %26, align 4, !tbaa !11
  %28 = icmp slt i32 %25, %27
  br i1 %28, label %29, label %52

29:                                               ; preds = %24
  %30 = getelementptr inbounds %struct.matrix, ptr %4, i32 0, i32 2
  %31 = load ptr, ptr %30, align 8, !tbaa !13
  %32 = load i32, ptr %5, align 4, !tbaa !12
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds ptr, ptr %31, i64 %33
  %35 = load ptr, ptr %34, align 8, !tbaa !14
  %36 = load i32, ptr %6, align 4, !tbaa !12
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds double, ptr %35, i64 %37
  %39 = load double, ptr %38, align 8, !tbaa !15
  %40 = getelementptr inbounds %struct.matrix, ptr %3, i32 0, i32 2
  %41 = load ptr, ptr %40, align 8, !tbaa !13
  %42 = load i32, ptr %5, align 4, !tbaa !12
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds ptr, ptr %41, i64 %43
  %45 = load ptr, ptr %44, align 8, !tbaa !14
  %46 = load i32, ptr %6, align 4, !tbaa !12
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds double, ptr %45, i64 %47
  store double %39, ptr %48, align 8, !tbaa !15
  br label %49

49:                                               ; preds = %29
  %50 = load i32, ptr %6, align 4, !tbaa !12
  %51 = add nsw i32 %50, 1
  store i32 %51, ptr %6, align 4, !tbaa !12
  br label %24, !llvm.loop !17

52:                                               ; preds = %24
  br label %53

53:                                               ; preds = %52
  %54 = load i32, ptr %5, align 4, !tbaa !12
  %55 = add nsw i32 %54, 1
  store i32 %55, ptr %5, align 4, !tbaa !12
  br label %18, !llvm.loop !19

56:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  %57 = load { i64, ptr }, ptr %3, align 8
  ret { i64, ptr } %57
}

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, !7, i64 0}
!6 = !{!"", !7, i64 0, !7, i64 4, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 4}
!12 = !{!7, !7, i64 0}
!13 = !{!6, !10, i64 8}
!14 = !{!10, !10, i64 0}
!15 = !{!16, !16, i64 0}
!16 = !{!"double", !8, 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: nounwind uwtable
declare dso_local { i64, ptr } @init_matrix(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local { i64, ptr } @copy_matrix(i64 %0, ptr nocapture readonly %1) local_unnamed_addr #0 {
  %.sroa.0.0.extract.trunc = trunc i64 %0 to i32
  %.sroa.2.0.extract.shift = lshr i64 %0, 32
  %.sroa.2.0.extract.trunc = trunc nuw i64 %.sroa.2.0.extract.shift to i32
  %3 = tail call { i64, ptr } @init_matrix(i32 noundef %.sroa.0.0.extract.trunc, i32 noundef %.sroa.2.0.extract.trunc)
  %4 = extractvalue { i64, ptr } %3, 0
  %.sroa.08.0.extract.trunc = trunc i64 %4 to i32
  %.sroa.39.0.extract.shift = lshr i64 %4, 32
  %5 = extractvalue { i64, ptr } %3, 1
  %6 = icmp sgt i32 %.sroa.08.0.extract.trunc, 0
  %.sroa.39.0.extract.trunc = trunc nuw i64 %.sroa.39.0.extract.shift to i32
  %7 = icmp sgt i32 %.sroa.39.0.extract.trunc, 0
  %or.cond = select i1 %6, i1 %7, i1 false
  br i1 %or.cond, label %.preheader.us.preheader, label %._crit_edge13

.preheader.us.preheader:                          ; preds = %2
  %wide.trip.count19 = and i64 %4, 2147483647
  %min.iters.check = icmp ult i64 %4, 17179869184
  %n.vec = and i64 %.sroa.39.0.extract.shift, 2147483644
  %cmp.n = icmp eq i64 %.sroa.39.0.extract.shift, %n.vec
  %xtraiter = and i64 %.sroa.39.0.extract.shift, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge.us
  %indvars.iv16 = phi i64 [ 0, %.preheader.us.preheader ], [ %indvars.iv.next17, %._crit_edge.us ]
  %8 = getelementptr inbounds ptr, ptr %1, i64 %indvars.iv16
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  %10 = getelementptr inbounds ptr, ptr %5, i64 %indvars.iv16
  %11 = load ptr, ptr %10, align 8, !tbaa !5
  %12 = ptrtoint ptr %11 to i64
  %13 = ptrtoint ptr %9 to i64
  %14 = sub i64 %12, %13
  %diff.check = icmp ult i64 %14, 32
  %or.cond24 = select i1 %min.iters.check, i1 true, i1 %diff.check
  br i1 %or.cond24, label %scalar.ph.preheader, label %vector.body

vector.body:                                      ; preds = %.preheader.us, %vector.body
  %index = phi i64 [ %index.next, %vector.body ], [ 0, %.preheader.us ]
  %15 = getelementptr inbounds double, ptr %9, i64 %index
  %16 = getelementptr inbounds i8, ptr %15, i64 16
  %wide.load = load <2 x double>, ptr %15, align 8, !tbaa !9
  %wide.load21 = load <2 x double>, ptr %16, align 8, !tbaa !9
  %17 = getelementptr inbounds double, ptr %11, i64 %index
  %18 = getelementptr inbounds i8, ptr %17, i64 16
  store <2 x double> %wide.load, ptr %17, align 8, !tbaa !9
  store <2 x double> %wide.load21, ptr %18, align 8, !tbaa !9
  %index.next = add nuw i64 %index, 4
  %19 = icmp eq i64 %index.next, %n.vec
  br i1 %19, 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 i1 %lcmp.mod.not, label %scalar.ph.prol.loopexit, label %scalar.ph.prol

scalar.ph.prol:                                   ; preds = %scalar.ph.preheader, %scalar.ph.prol
  %indvars.iv.prol = phi i64 [ %indvars.iv.next.prol, %scalar.ph.prol ], [ %indvars.iv.ph, %scalar.ph.preheader ]
  %prol.iter = phi i64 [ %prol.iter.next, %scalar.ph.prol ], [ 0, %scalar.ph.preheader ]
  %20 = getelementptr inbounds double, ptr %9, i64 %indvars.iv.prol
  %21 = load double, ptr %20, align 8, !tbaa !9
  %22 = getelementptr inbounds double, ptr %11, i64 %indvars.iv.prol
  store double %21, ptr %22, align 8, !tbaa !9
  %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 %scalar.ph.prol.loopexit, label %scalar.ph.prol, !llvm.loop !15

scalar.ph.prol.loopexit:                          ; preds = %scalar.ph.prol, %scalar.ph.preheader
  %indvars.iv.unr = phi i64 [ %indvars.iv.ph, %scalar.ph.preheader ], [ %indvars.iv.next.prol, %scalar.ph.prol ]
  %23 = sub nsw i64 %indvars.iv.ph, %.sroa.39.0.extract.shift
  %24 = icmp ugt i64 %23, -4
  br i1 %24, label %._crit_edge.us, label %scalar.ph

scalar.ph:                                        ; preds = %scalar.ph.prol.loopexit, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next.3, %scalar.ph ], [ %indvars.iv.unr, %scalar.ph.prol.loopexit ]
  %25 = getelementptr inbounds double, ptr %9, i64 %indvars.iv
  %26 = load double, ptr %25, align 8, !tbaa !9
  %27 = getelementptr inbounds double, ptr %11, i64 %indvars.iv
  store double %26, ptr %27, align 8, !tbaa !9
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %28 = getelementptr inbounds double, ptr %9, i64 %indvars.iv.next
  %29 = load double, ptr %28, align 8, !tbaa !9
  %30 = getelementptr inbounds double, ptr %11, i64 %indvars.iv.next
  store double %29, ptr %30, align 8, !tbaa !9
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %31 = getelementptr inbounds double, ptr %9, i64 %indvars.iv.next.1
  %32 = load double, ptr %31, align 8, !tbaa !9
  %33 = getelementptr inbounds double, ptr %11, i64 %indvars.iv.next.1
  store double %32, ptr %33, align 8, !tbaa !9
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %34 = getelementptr inbounds double, ptr %9, i64 %indvars.iv.next.2
  %35 = load double, ptr %34, align 8, !tbaa !9
  %36 = getelementptr inbounds double, ptr %11, i64 %indvars.iv.next.2
  store double %35, ptr %36, align 8, !tbaa !9
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %exitcond.not.3 = icmp eq i64 %indvars.iv.next.3, %.sroa.39.0.extract.shift
  br i1 %exitcond.not.3, label %._crit_edge.us, label %scalar.ph, !llvm.loop !17

._crit_edge.us:                                   ; preds = %scalar.ph.prol.loopexit, %scalar.ph, %middle.block
  %indvars.iv.next17 = add nuw nsw i64 %indvars.iv16, 1
  %exitcond20.not = icmp eq i64 %indvars.iv.next17, %wide.trip.count19
  br i1 %exitcond20.not, label %._crit_edge13, label %.preheader.us, !llvm.loop !18

._crit_edge13:                                    ; preds = %._crit_edge.us, %2
  ret { i64, ptr } %3
}

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" }

!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, !16}
!16 = !{!"llvm.loop.unroll.disable"}
!17 = distinct !{!17, !12, !13}
!18 = distinct !{!18, !12}


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