; LLVM IR from bondhugula/pluto :: examples/corcol (corcol)

; 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"

@data = external dso_local global [2001 x [2001 x float]], align 16

; Function Attrs: nounwind uwtable
define dso_local void @init_array() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 0, ptr %1, align 4, !tbaa !5
  br label %3

3:                                                ; preds = %27, %0
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = icmp slt i32 %4, 2000
  br i1 %5, label %6, label %30

6:                                                ; preds = %3
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %23, %6
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = icmp slt i32 %8, 2000
  br i1 %9, label %10, label %26

10:                                               ; preds = %7
  %11 = load i32, ptr %1, align 4, !tbaa !5
  %12 = sitofp i32 %11 to float
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = sitofp i32 %13 to float
  %15 = call float @llvm.fmuladd.f32(float %12, float %14, float 1.000000e+00)
  %16 = fdiv float %15, 2.000000e+03
  %17 = load i32, ptr %1, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [2001 x [2001 x float]], ptr @data, i64 0, i64 %18
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [2001 x float], ptr %19, i64 0, i64 %21
  store float %16, ptr %22, align 4, !tbaa !9
  br label %23

23:                                               ; preds = %10
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = add nsw i32 %24, 1
  store i32 %25, ptr %2, align 4, !tbaa !5
  br label %7, !llvm.loop !11

26:                                               ; preds = %7
  br label %27

27:                                               ; preds = %26
  %28 = load i32, ptr %1, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %1, align 4, !tbaa !5
  br label %3, !llvm.loop !13

30:                                               ; preds = %3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  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 speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #2

; 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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"

@data = external dso_local local_unnamed_addr global [2001 x [2001 x float]], align 16

; Function Attrs: nofree norecurse nosync nounwind memory(write, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @init_array() local_unnamed_addr #0 {
  br label %vector.ph

vector.ph:                                        ; preds = %middle.block, %0
  %indvars.iv12 = phi i64 [ 0, %0 ], [ %indvars.iv.next13, %middle.block ]
  %1 = trunc nuw nsw i64 %indvars.iv12 to i32
  %2 = uitofp nneg i32 %1 to float
  %broadcast.splatinsert = insertelement <4 x float> poison, float %2, i64 0
  %broadcast.splat = shufflevector <4 x float> %broadcast.splatinsert, <4 x float> poison, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next.1, %vector.body ]
  %vec.ind = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %vector.ph ], [ %vec.ind.next.1, %vector.body ]
  %3 = uitofp <4 x i32> %vec.ind to <4 x float>
  %4 = tail call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %broadcast.splat, <4 x float> %3, <4 x float> <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00>)
  %5 = fdiv <4 x float> %4, <float 2.000000e+03, float 2.000000e+03, float 2.000000e+03, float 2.000000e+03>
  %6 = getelementptr inbounds [2001 x [2001 x float]], ptr @data, i64 0, i64 %indvars.iv12, i64 %index
  store <4 x float> %5, ptr %6, align 4, !tbaa !5
  %index.next = or disjoint i64 %index, 4
  %vec.ind.next = add <4 x i32> %vec.ind, <i32 4, i32 4, i32 4, i32 4>
  %7 = uitofp <4 x i32> %vec.ind.next to <4 x float>
  %8 = tail call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %broadcast.splat, <4 x float> %7, <4 x float> <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00>)
  %9 = fdiv <4 x float> %8, <float 2.000000e+03, float 2.000000e+03, float 2.000000e+03, float 2.000000e+03>
  %10 = getelementptr inbounds [2001 x [2001 x float]], ptr @data, i64 0, i64 %indvars.iv12, i64 %index.next
  store <4 x float> %9, ptr %10, align 4, !tbaa !5
  %index.next.1 = add nuw nsw i64 %index, 8
  %vec.ind.next.1 = add <4 x i32> %vec.ind, <i32 8, i32 8, i32 8, i32 8>
  %11 = icmp eq i64 %index.next.1, 2000
  br i1 %11, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %indvars.iv.next13 = add nuw nsw i64 %indvars.iv12, 1
  %exitcond15.not = icmp eq i64 %indvars.iv.next13, 2000
  br i1 %exitcond15.not, label %12, label %vector.ph, !llvm.loop !13

12:                                               ; preds = %middle.block
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare <4 x float> @llvm.fmuladd.v4f32(<4 x float>, <4 x float>, <4 x float>) #1

attributes #0 = { nofree norecurse nosync nounwind memory(write, argmem: none, 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" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10}


; Effective O3 passes: GlobalDCEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass