; LLVM IR from csviragh/robotsim :: src/utilities (file_utils)

; 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"

; Function Attrs: nounwind uwtable
define dso_local ptr @RStrip(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  %6 = call i64 @strlen(ptr noundef %5) #5
  %7 = getelementptr inbounds i8, ptr %4, i64 %6
  store ptr %7, ptr %3, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %27, %1
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = icmp ugt ptr %9, %10
  br i1 %11, label %12, label %25

12:                                               ; preds = %8
  %13 = call ptr @__ctype_b_loc() #6
  %14 = load ptr, ptr %13, align 8, !tbaa !5
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = getelementptr inbounds i8, ptr %15, i32 -1
  store ptr %16, ptr %3, align 8, !tbaa !5
  %17 = load i8, ptr %16, align 1, !tbaa !9
  %18 = sext i8 %17 to i32
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds i16, ptr %14, i64 %19
  %21 = load i16, ptr %20, align 2, !tbaa !10
  %22 = zext i16 %21 to i32
  %23 = and i32 %22, 8192
  %24 = icmp ne i32 %23, 0
  br label %25

25:                                               ; preds = %12, %8
  %26 = phi i1 [ false, %8 ], [ %24, %12 ]
  br i1 %26, label %27, label %29

27:                                               ; preds = %25
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  store i8 0, ptr %28, align 1, !tbaa !9
  br label %8, !llvm.loop !12

29:                                               ; preds = %25
  %30 = load ptr, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret ptr %30
}

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

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #2

; Function Attrs: nounwind willreturn memory(none)
declare ptr @__ctype_b_loc() #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 = { nounwind willreturn 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 #3 = { nounwind willreturn memory(none) "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 willreturn memory(read) }
attributes #6 = { nounwind 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"short", !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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"

; Function Attrs: nofree nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local noundef ptr @RStrip(ptr noundef returned %0) local_unnamed_addr #0 {
  %2 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %0) #3
  %3 = icmp sgt i64 %2, 0
  br i1 %3, label %.lr.ph, label %.critedge

.lr.ph:                                           ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 %2
  %5 = tail call ptr @__ctype_b_loc() #4
  br label %6

6:                                                ; preds = %.lr.ph, %14
  %.07 = phi ptr [ %4, %.lr.ph ], [ %8, %14 ]
  %7 = load ptr, ptr %5, align 8, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %.07, i64 -1
  %9 = load i8, ptr %8, align 1, !tbaa !9
  %10 = sext i8 %9 to i64
  %11 = getelementptr inbounds i16, ptr %7, i64 %10
  %12 = load i16, ptr %11, align 2, !tbaa !10
  %13 = and i16 %12, 8192
  %.not = icmp eq i16 %13, 0
  br i1 %.not, label %.critedge, label %14

14:                                               ; preds = %6
  store i8 0, ptr %8, align 1, !tbaa !9
  %15 = icmp ugt ptr %8, %0
  br i1 %15, label %6, label %.critedge, !llvm.loop !12

.critedge:                                        ; preds = %6, %14, %1
  ret ptr %0
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
declare ptr @__ctype_b_loc() local_unnamed_addr #2

attributes #0 = { nofree nounwind memory(readwrite, 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 = { mustprogress nofree nounwind willreturn memory(argmem: 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 #2 = { mustprogress nofree nosync nounwind willreturn memory(none) "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 willreturn memory(read) }
attributes #4 = { nounwind 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"short", !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass