; LLVM IR from AngoraFuzzer/Angora :: llvm_mode/dfsan_rt/sanitizer_common (sanitizer_flag_parser)

; 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"

%"class.__sanitizer::FlagParser" = type { ptr, i32, ptr, i64 }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN11__sanitizer10FlagParser8is_spaceEc(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN11__sanitizer10FlagParser15skip_whitespaceEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #0 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  br label %4

4:                                                ; preds = %12, %1
  %5 = getelementptr inbounds %"class.__sanitizer::FlagParser", ptr %3, i32 0, i32 2
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  %7 = getelementptr inbounds %"class.__sanitizer::FlagParser", ptr %3, i32 0, i32 3
  %8 = load i64, ptr %7, align 8, !tbaa !13
  %9 = getelementptr inbounds i8, ptr %6, i64 %8
  %10 = load i8, ptr %9, align 1, !tbaa !14
  %11 = call noundef zeroext i1 @_ZN11__sanitizer10FlagParser8is_spaceEc(ptr noundef nonnull align 8 dereferenceable(32) %3, i8 noundef signext %10)
  br i1 %11, label %12, label %16

12:                                               ; preds = %4
  %13 = getelementptr inbounds %"class.__sanitizer::FlagParser", ptr %3, i32 0, i32 3
  %14 = load i64, ptr %13, align 8, !tbaa !13
  %15 = add i64 %14, 1
  store i64 %15, ptr %13, align 8, !tbaa !13
  br label %4, !llvm.loop !15

16:                                               ; preds = %4
  ret void
}

attributes #0 = { mustprogress 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" }

!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++ TBAA"}
!9 = !{!10, !6, i64 16}
!10 = !{!"_ZTSN11__sanitizer10FlagParserE", !6, i64 0, !11, i64 8, !6, i64 16, !12, i64 24}
!11 = !{!"int", !7, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!10, !12, i64 24}
!14 = !{!7, !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"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: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN11__sanitizer10FlagParser8is_spaceEc(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN11__sanitizer10FlagParser15skip_whitespaceEv(ptr noundef nonnull align 8 dereferenceable(32) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 16
  %3 = getelementptr inbounds i8, ptr %0, i64 24
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = load i64, ptr %3, align 8, !tbaa !12
  %6 = getelementptr inbounds i8, ptr %4, i64 %5
  %7 = load i8, ptr %6, align 1, !tbaa !13
  %8 = tail call noundef zeroext i1 @_ZN11__sanitizer10FlagParser8is_spaceEc(ptr noundef nonnull align 8 dereferenceable(32) %0, i8 noundef signext %7)
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %.lr.ph
  %9 = load i64, ptr %3, align 8, !tbaa !12
  %10 = add i64 %9, 1
  store i64 %10, ptr %3, align 8, !tbaa !12
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds i8, ptr %11, i64 %10
  %13 = load i8, ptr %12, align 1, !tbaa !13
  %14 = tail call noundef zeroext i1 @_ZN11__sanitizer10FlagParser8is_spaceEc(ptr noundef nonnull align 8 dereferenceable(32) %0, i8 noundef signext %13)
  br i1 %14, label %.lr.ph, label %._crit_edge, !llvm.loop !14

._crit_edge:                                      ; preds = %.lr.ph, %1
  ret void
}

attributes #0 = { mustprogress 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" }

!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, !7, i64 16}
!6 = !{!"_ZTSN11__sanitizer10FlagParserE", !7, i64 0, !10, i64 8, !7, i64 16, !11, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"long", !8, i64 0}
!12 = !{!6, !11, i64 24}
!13 = !{!8, !8, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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