; LLVM IR from jingweizhanghuai/Morn :: example (proc_message)

; 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"

@.str = external hidden unnamed_addr constant [18 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local void @publisher() #0 {
  %1 = alloca [64 x i8], align 16
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 64, ptr %1) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %3

3:                                                ; preds = %18, %0
  %4 = load i32, ptr %2, align 4, !tbaa !5
  %5 = icmp slt i32 %4, 1000
  br i1 %5, label %7, label %6

6:                                                ; preds = %3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  br label %21

7:                                                ; preds = %3
  %8 = call i32 @m_Rand(i32 noundef 0, i32 noundef 500)
  %9 = mul nsw i32 %8, 1000
  %10 = call i32 @usleep(i32 noundef %9)
  %11 = getelementptr inbounds [64 x i8], ptr %1, i64 0, i64 0
  %12 = call i32 @m_RandString(ptr noundef %11, i32 noundef 16, i32 noundef 64)
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = getelementptr inbounds [64 x i8], ptr %1, i64 0, i64 0
  %15 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %13, ptr noundef %14)
  %16 = getelementptr inbounds [64 x i8], ptr %1, i64 0, i64 0
  %17 = call ptr @m_ProcMessageWrite(ptr noundef @.str.1, ptr noundef %16, i32 noundef -1)
  br label %18

18:                                               ; preds = %7
  %19 = load i32, ptr %2, align 4, !tbaa !5
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %2, align 4, !tbaa !5
  br label %3, !llvm.loop !9

21:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 64, 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

declare i32 @usleep(i32 noundef) #2

declare i32 @m_Rand(i32 noundef, i32 noundef) #2

declare i32 @m_RandString(ptr noundef, i32 noundef, i32 noundef) #2

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

declare ptr @m_ProcMessageWrite(ptr noundef, ptr noundef, i32 noundef) #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 = { "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 }

!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"}


; 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"

@.str = external hidden unnamed_addr constant [18 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local void @publisher() local_unnamed_addr #0 {
  %1 = alloca [64 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 64, ptr nonnull %1) #4
  br label %3

2:                                                ; preds = %3
  call void @llvm.lifetime.end.p0(i64 64, ptr nonnull %1) #4
  ret void

3:                                                ; preds = %0, %3
  %.03 = phi i32 [ 0, %0 ], [ %10, %3 ]
  %4 = call i32 @m_Rand(i32 noundef 0, i32 noundef 500) #4
  %5 = mul nsw i32 %4, 1000
  %6 = call i32 @usleep(i32 noundef %5) #4
  %7 = call i32 @m_RandString(ptr noundef nonnull %1, i32 noundef 16, i32 noundef 64) #4
  %8 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %.03, ptr noundef nonnull %1)
  %9 = call ptr @m_ProcMessageWrite(ptr noundef nonnull @.str.1, ptr noundef nonnull %1, i32 noundef -1) #4
  %10 = add nuw nsw i32 %.03, 1
  %exitcond.not = icmp eq i32 %10, 1000
  br i1 %exitcond.not, label %2, label %3, !llvm.loop !5
}

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

declare i32 @usleep(i32 noundef) local_unnamed_addr #2

declare i32 @m_Rand(i32 noundef, i32 noundef) local_unnamed_addr #2

declare i32 @m_RandString(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

declare ptr @m_ProcMessageWrite(ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress 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 = { mustprogress 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 = { 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 #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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,SROAPass,SimplifyCFGPass