; LLVM IR from AlgoGenesis/C :: Miscellaneous Algorithms/shortest remaining time (program)

; 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.Process = type { i32, i32, i32, i32, i32, i32, i32 }

@.str.4 = external hidden unnamed_addr constant [32 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [52 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @findAvgTime(ptr 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

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  %6 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.5, ptr noundef %2)
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = zext i32 %8 to i64
  %10 = call ptr @llvm.stacksave.p0()
  store ptr %10, ptr %3, align 8
  %11 = alloca %struct.Process, i64 %9, align 16
  store i64 %9, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %48, %0
  %13 = load i32, ptr %5, align 4, !tbaa !5
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = icmp slt i32 %13, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  br label %51

17:                                               ; preds = %12
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = add nsw i32 %18, 1
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds %struct.Process, ptr %11, i64 %21
  %23 = getelementptr inbounds %struct.Process, ptr %22, i32 0, i32 0
  store i32 %19, ptr %23, align 4, !tbaa !9
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds %struct.Process, ptr %11, i64 %25
  %27 = getelementptr inbounds %struct.Process, ptr %26, i32 0, i32 0
  %28 = load i32, ptr %27, align 4, !tbaa !9
  %29 = call i32 (ptr, ...) @printf(ptr noundef @.str.6, i32 noundef %28)
  %30 = load i32, ptr %5, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds %struct.Process, ptr %11, i64 %31
  %33 = getelementptr inbounds %struct.Process, ptr %32, i32 0, i32 1
  %34 = load i32, ptr %5, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds %struct.Process, ptr %11, i64 %35
  %37 = getelementptr inbounds %struct.Process, ptr %36, i32 0, i32 2
  %38 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.7, ptr noundef %33, ptr noundef %37)
  %39 = load i32, ptr %5, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds %struct.Process, ptr %11, i64 %40
  %42 = getelementptr inbounds %struct.Process, ptr %41, i32 0, i32 1
  %43 = load i32, ptr %42, align 4, !tbaa !11
  %44 = load i32, ptr %5, align 4, !tbaa !5
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds %struct.Process, ptr %11, i64 %45
  %47 = getelementptr inbounds %struct.Process, ptr %46, i32 0, i32 3
  store i32 %43, ptr %47, align 4, !tbaa !12
  br label %48

48:                                               ; preds = %17
  %49 = load i32, ptr %5, align 4, !tbaa !5
  %50 = add nsw i32 %49, 1
  store i32 %50, ptr %5, align 4, !tbaa !5
  br label %12, !llvm.loop !13

51:                                               ; preds = %16
  %52 = load i32, ptr %2, align 4, !tbaa !5
  call void @findAvgTime(ptr noundef %11, i32 noundef %52)
  store i32 0, ptr %1, align 4
  %53 = load ptr, ptr %3, align 8
  call void @llvm.stackrestore.p0(ptr %53)
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  %54 = load i32, ptr %1, align 4
  ret i32 %54
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 = { nocallback nofree nosync nounwind willreturn }
attributes #4 = { 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, !6, i64 0}
!10 = !{!"Process", !6, i64 0, !6, i64 4, !6, i64 8, !6, i64 12, !6, i64 16, !6, i64 20, !6, i64 24}
!11 = !{!10, !6, i64 4}
!12 = !{!10, !6, i64 12}
!13 = distinct !{!13, !14}
!14 = !{!"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"

%struct.Process = type { i32, i32, i32, i32, i32, i32, i32 }

@.str.4 = external hidden unnamed_addr constant [32 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [52 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @findAvgTime(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  %2 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4)
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.5, ptr noundef nonnull %1)
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = zext i32 %4 to i64
  %6 = call ptr @llvm.stacksave.p0()
  %7 = alloca %struct.Process, i64 %5, align 16
  %8 = load i32, ptr %1, align 4, !tbaa !5
  %9 = icmp sgt i32 %8, 0
  br i1 %9, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  %.lcssa = phi i32 [ %8, %0 ], [ %18, %.lr.ph ]
  call void @findAvgTime(ptr noundef nonnull %7, i32 noundef %.lcssa)
  call void @llvm.stackrestore.p0(ptr %6)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  ret i32 0

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %10 = getelementptr inbounds %struct.Process, ptr %7, i64 %indvars.iv
  %11 = trunc nuw nsw i64 %indvars.iv.next to i32
  store i32 %11, ptr %10, align 4, !tbaa !9
  %12 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6, i32 noundef %11)
  %13 = getelementptr inbounds i8, ptr %10, i64 4
  %14 = getelementptr inbounds i8, ptr %10, i64 8
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.7, ptr noundef nonnull %13, ptr noundef nonnull %14)
  %16 = load i32, ptr %13, align 4, !tbaa !11
  %17 = getelementptr inbounds i8, ptr %10, i64 12
  store i32 %16, ptr %17, align 4, !tbaa !12
  %18 = load i32, ptr %1, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = icmp slt i64 %indvars.iv.next, %19
  br i1 %20, label %.lr.ph, label %._crit_edge, !llvm.loop !13
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(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" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { mustprogress nocallback nofree nosync nounwind willreturn }
attributes #4 = { 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, !6, i64 0}
!10 = !{!"Process", !6, i64 0, !6, i64 4, !6, i64 8, !6, i64 12, !6, i64 16, !6, i64 20, !6, i64 24}
!11 = !{!10, !6, i64 4}
!12 = !{!10, !6, i64 12}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass