; LLVM IR from avik-das/seam-carver :: seam-carver (compute_energy)

; 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"

@stderr = external global ptr, align 8
@.str.9 = external hidden unnamed_addr constant [32 x i8], align 1

; 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: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @energy_at(ptr noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local ptr @compute_energy(ptr noundef %0, i32 noundef %1, i32 noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = load i32, ptr %7, align 4, !tbaa !9
  %15 = mul nsw i32 %13, %14
  %16 = sext i32 %15 to i64
  %17 = mul i64 %16, 4
  %18 = call noalias ptr @malloc(i64 noundef %17) #5
  store ptr %18, ptr %8, align 8, !tbaa !5
  %19 = load ptr, ptr %8, align 8, !tbaa !5
  %20 = icmp ne ptr %19, null
  br i1 %20, label %24, label %21

21:                                               ; preds = %3
  %22 = load ptr, ptr @stderr, align 8, !tbaa !5
  %23 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %22, ptr noundef @.str.9, i32 noundef 42) #4
  store ptr null, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %61

24:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %25

25:                                               ; preds = %56, %24
  %26 = load i32, ptr %10, align 4, !tbaa !9
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = icmp slt i32 %26, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %25
  store i32 2, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  br label %59

30:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #4
  store i32 0, ptr %11, align 4, !tbaa !9
  br label %31

31:                                               ; preds = %52, %30
  %32 = load i32, ptr %11, align 4, !tbaa !9
  %33 = load i32, ptr %6, align 4, !tbaa !9
  %34 = icmp slt i32 %32, %33
  br i1 %34, label %36, label %35

35:                                               ; preds = %31
  store i32 5, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #4
  br label %55

36:                                               ; preds = %31
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  %37 = load i32, ptr %10, align 4, !tbaa !9
  %38 = load i32, ptr %6, align 4, !tbaa !9
  %39 = mul nsw i32 %37, %38
  %40 = load i32, ptr %11, align 4, !tbaa !9
  %41 = add nsw i32 %39, %40
  store i32 %41, ptr %12, align 4, !tbaa !9
  %42 = load ptr, ptr %5, align 8, !tbaa !5
  %43 = load i32, ptr %6, align 4, !tbaa !9
  %44 = load i32, ptr %7, align 4, !tbaa !9
  %45 = load i32, ptr %11, align 4, !tbaa !9
  %46 = load i32, ptr %10, align 4, !tbaa !9
  %47 = call i32 @energy_at(ptr noundef %42, i32 noundef %43, i32 noundef %44, i32 noundef %45, i32 noundef %46)
  %48 = load ptr, ptr %8, align 8, !tbaa !5
  %49 = load i32, ptr %12, align 4, !tbaa !9
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds i32, ptr %48, i64 %50
  store i32 %47, ptr %51, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %52

52:                                               ; preds = %36
  %53 = load i32, ptr %11, align 4, !tbaa !9
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %11, align 4, !tbaa !9
  br label %31, !llvm.loop !11

55:                                               ; preds = %35
  br label %56

56:                                               ; preds = %55
  %57 = load i32, ptr %10, align 4, !tbaa !9
  %58 = add nsw i32 %57, 1
  store i32 %58, ptr %10, align 4, !tbaa !9
  br label %25, !llvm.loop !13

59:                                               ; preds = %29
  %60 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %60, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %61

61:                                               ; preds = %59, %21
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  %62 = load ptr, ptr %4, align 8
  ret ptr %62
}

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind allocsize(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 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 #3 = { nounwind "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 #4 = { nounwind }
attributes #5 = { nounwind allocsize(0) }

!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"}
!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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str.9 = external hidden unnamed_addr constant [32 x i8], align 1

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @energy_at(ptr noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local noalias noundef ptr @compute_energy(ptr noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #1 {
  %4 = mul nsw i32 %2, %1
  %5 = sext i32 %4 to i64
  %6 = shl nsw i64 %5, 2
  %7 = tail call noalias ptr @malloc(i64 noundef %6) #3
  %.not = icmp eq ptr %7, null
  br i1 %.not, label %16, label %.preheader25

.preheader25:                                     ; preds = %3
  %8 = icmp sgt i32 %2, 0
  %9 = icmp sgt i32 %1, 0
  %or.cond = and i1 %8, %9
  br i1 %or.cond, label %.preheader.us.preheader, label %.loopexit

.preheader.us.preheader:                          ; preds = %.preheader25
  %10 = zext nneg i32 %1 to i64
  %wide.trip.count33 = zext nneg i32 %2 to i64
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge.us
  %indvars.iv30 = phi i64 [ 0, %.preheader.us.preheader ], [ %indvars.iv.next31, %._crit_edge.us ]
  %11 = mul nuw nsw i64 %indvars.iv30, %10
  %12 = trunc nuw nsw i64 %indvars.iv30 to i32
  %invariant.gep = getelementptr inbounds i32, ptr %7, i64 %11
  br label %13

13:                                               ; preds = %.preheader.us, %13
  %indvars.iv = phi i64 [ 0, %.preheader.us ], [ %indvars.iv.next, %13 ]
  %14 = trunc nuw nsw i64 %indvars.iv to i32
  %15 = tail call i32 @energy_at(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %14, i32 noundef %12)
  %gep = getelementptr inbounds i32, ptr %invariant.gep, i64 %indvars.iv
  store i32 %15, ptr %gep, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %10
  br i1 %exitcond.not, label %._crit_edge.us, label %13, !llvm.loop !9

._crit_edge.us:                                   ; preds = %13
  %indvars.iv.next31 = add nuw nsw i64 %indvars.iv30, 1
  %exitcond34.not = icmp eq i64 %indvars.iv.next31, %wide.trip.count33
  br i1 %exitcond34.not, label %.loopexit, label %.preheader.us, !llvm.loop !11

16:                                               ; preds = %3
  %17 = load ptr, ptr @stderr, align 8, !tbaa !12
  %18 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %17, ptr noundef nonnull @.str.9, i32 noundef 42) #4
  br label %.loopexit

.loopexit:                                        ; preds = %._crit_edge.us, %.preheader25, %16
  ret ptr %7
}

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #2

attributes #0 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 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 = { nofree nounwind "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 #3 = { nounwind allocsize(0) }
attributes #4 = { cold 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = !{!13, !13, i64 0}
!13 = !{!"any pointer", !7, i64 0}


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