; LLVM IR from hbatagelo/abcg :: abcg/external/glslang/glslang/MachineIndependent (Scan)

; 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: mustprogress uwtable
declare dso_local void @_ZN7glslang13TInputScanner17consumeWhiteSpaceERb(ptr noundef nonnull align 8 dereferenceable(90), ptr noundef nonnull align 1 dereferenceable(1)) #0 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN7glslang13TInputScanner4peekEv(ptr noundef nonnull align 8 dereferenceable(90)) #2 align 2

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN7glslang13TInputScanner14consumeCommentEv(ptr noundef nonnull align 8 dereferenceable(90)) #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7glslang13TInputScanner24consumeWhitespaceCommentERb(ptr noundef nonnull align 8 dereferenceable(90) %0, ptr noundef nonnull align 1 dereferenceable(1) %1) #0 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %7 = load ptr, ptr %3, align 8
  br label %8

8:                                                ; preds = %25, %2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  call void @_ZN7glslang13TInputScanner17consumeWhiteSpaceERb(ptr noundef nonnull align 8 dereferenceable(90) %7, ptr noundef nonnull align 1 dereferenceable(1) %9)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %10 = call noundef i32 @_ZN7glslang13TInputScanner4peekEv(ptr noundef nonnull align 8 dereferenceable(90) %7)
  store i32 %10, ptr %5, align 4, !tbaa !9
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = icmp ne i32 %11, 47
  br i1 %12, label %16, label %13

13:                                               ; preds = %8
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = icmp eq i32 %14, -1
  br i1 %15, label %16, label %17

16:                                               ; preds = %13, %8
  store i32 1, ptr %6, align 4
  br label %22

17:                                               ; preds = %13
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  store i8 1, ptr %18, align 1, !tbaa !11
  %19 = call noundef zeroext i1 @_ZN7glslang13TInputScanner14consumeCommentEv(ptr noundef nonnull align 8 dereferenceable(90) %7)
  br i1 %19, label %21, label %20

20:                                               ; preds = %17
  store i32 1, ptr %6, align 4
  br label %22

21:                                               ; preds = %17
  store i32 0, ptr %6, align 4
  br label %22

22:                                               ; preds = %21, %20, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  %23 = load i32, ptr %6, align 4
  switch i32 %23, label %27 [
    i32 0, label %24
    i32 1, label %26
  ]

24:                                               ; preds = %22
  br label %25

25:                                               ; preds = %24
  br i1 true, label %8, label %26, !llvm.loop !13

26:                                               ; preds = %25, %22
  ret void

27:                                               ; preds = %22
  unreachable
}

attributes #0 = { mustprogress 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 = { 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" }
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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"bool", !7, i64 0}
!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"

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7glslang13TInputScanner17consumeWhiteSpaceERb(ptr noundef nonnull align 8 dereferenceable(90), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN7glslang13TInputScanner4peekEv(ptr noundef nonnull align 8 dereferenceable(90)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN7glslang13TInputScanner14consumeCommentEv(ptr noundef nonnull align 8 dereferenceable(90)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7glslang13TInputScanner24consumeWhitespaceCommentERb(ptr noundef nonnull align 8 dereferenceable(90) %0, ptr noundef nonnull align 1 dereferenceable(1) %1) local_unnamed_addr #0 align 2 {
  br label %3

3:                                                ; preds = %5, %2
  tail call void @_ZN7glslang13TInputScanner17consumeWhiteSpaceERb(ptr noundef nonnull align 8 dereferenceable(90) %0, ptr noundef nonnull align 1 dereferenceable(1) %1)
  %4 = tail call noundef i32 @_ZN7glslang13TInputScanner4peekEv(ptr noundef nonnull align 8 dereferenceable(90) %0)
  %.not = icmp eq i32 %4, 47
  br i1 %.not, label %5, label %7

5:                                                ; preds = %3
  store i8 1, ptr %1, align 1, !tbaa !5
  %6 = tail call noundef zeroext i1 @_ZN7glslang13TInputScanner14consumeCommentEv(ptr noundef nonnull align 8 dereferenceable(90) %0)
  br i1 %6, label %3, label %7

7:                                                ; preds = %3, %5
  ret void
}

attributes #0 = { mustprogress 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 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 = !{!"bool", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,SROAPass,SimplifyCFGPass,TailCallElimPass