; LLVM IR from holzschu/ios_system :: text_cmds/csplit (csplit)

; 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"

@__const.my_tmpfile.s = external hidden unnamed_addr constant [20 x i8], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local ptr @my_tmpfile() #0 {
  %1 = alloca ptr, align 8
  %2 = alloca [20 x i8], align 16
  %3 = alloca [2048 x i8], align 16
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 20, ptr %2) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %2, ptr align 16 @__const.my_tmpfile.s, i64 20, i1 false)
  call void @llvm.lifetime.start.p0(i64 2048, ptr %3) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %26, %0
  %9 = load i32, ptr %6, align 4, !tbaa !5
  %10 = icmp slt i32 %9, 100
  br i1 %10, label %11, label %29

11:                                               ; preds = %8
  %12 = getelementptr inbounds [20 x i8], ptr %2, i64 0, i64 0
  %13 = getelementptr inbounds i8, ptr %12, i64 13
  %14 = call ptr @__randname(ptr noundef %13)
  %15 = getelementptr inbounds [2048 x i8], ptr %3, i64 0, i64 0
  %16 = call ptr @getenv(ptr noundef @.str.1) #5
  %17 = getelementptr inbounds [20 x i8], ptr %2, i64 0, i64 0
  %18 = call i32 (ptr, ptr, ...) @sprintf(ptr noundef %15, ptr noundef @.str, ptr noundef %16, ptr noundef %17) #5
  %19 = getelementptr inbounds [2048 x i8], ptr %3, i64 0, i64 0
  %20 = call noalias ptr @fopen(ptr noundef %19, ptr noundef @.str.2)
  store ptr %20, ptr %5, align 8, !tbaa !9
  %21 = load ptr, ptr %5, align 8, !tbaa !9
  %22 = icmp ne ptr %21, null
  br i1 %22, label %23, label %25

23:                                               ; preds = %11
  %24 = load ptr, ptr %5, align 8, !tbaa !9
  store ptr %24, ptr %1, align 8
  store i32 1, ptr %7, align 4
  br label %30

25:                                               ; preds = %11
  br label %26

26:                                               ; preds = %25
  %27 = load i32, ptr %6, align 4, !tbaa !5
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %6, align 4, !tbaa !5
  br label %8, !llvm.loop !11

29:                                               ; preds = %8
  store ptr null, ptr %1, align 8
  store i32 1, ptr %7, align 4
  br label %30

30:                                               ; preds = %29, %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 2048, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 20, ptr %2) #5
  %31 = load ptr, ptr %1, align 8
  ret ptr %31
}

; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

declare ptr @__randname(ptr noundef) #3

; Function Attrs: nounwind
declare i32 @sprintf(ptr noundef, ptr noundef, ...) #4

; Function Attrs: nounwind
declare ptr @getenv(ptr noundef) #4

declare noalias ptr @fopen(ptr noundef, ptr noundef) #3

; 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 nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 "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 #5 = { 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 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

@__const.my_tmpfile.s = external hidden unnamed_addr constant [20 x i8], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noalias noundef ptr @my_tmpfile() local_unnamed_addr #0 {
  %1 = alloca [20 x i8], align 16
  %2 = alloca [2048 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 20, ptr nonnull %1) #6
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(20) %1, ptr noundef nonnull align 16 dereferenceable(20) @__const.my_tmpfile.s, i64 20, i1 false)
  call void @llvm.lifetime.start.p0(i64 2048, ptr nonnull %2) #6
  %3 = getelementptr inbounds i8, ptr %1, i64 13
  br label %4

4:                                                ; preds = %4, %0
  %.06 = phi i32 [ 0, %0 ], [ %9, %4 ]
  %5 = call ptr @__randname(ptr noundef nonnull %3) #6
  %6 = call ptr @getenv(ptr noundef nonnull @.str.1) #6
  %7 = call i32 (ptr, ptr, ...) @sprintf(ptr noundef nonnull dereferenceable(1) %2, ptr noundef nonnull dereferenceable(1) @.str, ptr noundef %6, ptr noundef nonnull %1) #6
  %8 = call noalias ptr @fopen(ptr noundef nonnull %2, ptr noundef nonnull @.str.2)
  %.not = icmp ne ptr %8, null
  %9 = add nuw nsw i32 %.06, 1
  %exitcond.not = icmp eq i32 %9, 100
  %or.cond = select i1 %.not, i1 true, i1 %exitcond.not
  br i1 %or.cond, label %10, label %4, !llvm.loop !5

10:                                               ; preds = %4
  call void @llvm.lifetime.end.p0(i64 2048, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 20, ptr nonnull %1) #6
  ret ptr %8
}

; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

declare ptr @__randname(ptr noundef) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @sprintf(ptr noalias nocapture noundef writeonly, ptr nocapture noundef readonly, ...) local_unnamed_addr #4

; Function Attrs: nofree nounwind memory(read)
declare noundef ptr @getenv(ptr nocapture noundef) local_unnamed_addr #5

; Function Attrs: nofree nounwind
declare noalias noundef ptr @fopen(ptr nocapture noundef readonly, ptr nocapture noundef readonly) local_unnamed_addr #4

; 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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 = { 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 #5 = { nofree nounwind memory(read) "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 #6 = { 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: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass