; 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
define dso_local void @_ZN7glslang13TInputScanner17consumeWhiteSpaceERb(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
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %7 = call noundef i32 @_ZN7glslang13TInputScanner4peekEv(ptr noundef nonnull align 8 dereferenceable(90) %6)
  store i32 %7, ptr %5, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %30, %2
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = icmp eq i32 %9, 32
  br i1 %10, label %20, label %11

11:                                               ; preds = %8
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = icmp eq i32 %12, 9
  br i1 %13, label %20, label %14

14:                                               ; preds = %11
  %15 = load i32, ptr %5, align 4, !tbaa !9
  %16 = icmp eq i32 %15, 13
  br i1 %16, label %20, label %17

17:                                               ; preds = %14
  %18 = load i32, ptr %5, align 4, !tbaa !9
  %19 = icmp eq i32 %18, 10
  br label %20

20:                                               ; preds = %17, %14, %11, %8
  %21 = phi i1 [ true, %14 ], [ true, %11 ], [ true, %8 ], [ %19, %17 ]
  br i1 %21, label %22, label %33

22:                                               ; preds = %20
  %23 = load i32, ptr %5, align 4, !tbaa !9
  %24 = icmp eq i32 %23, 13
  br i1 %24, label %28, label %25

25:                                               ; preds = %22
  %26 = load i32, ptr %5, align 4, !tbaa !9
  %27 = icmp eq i32 %26, 10
  br i1 %27, label %28, label %30

28:                                               ; preds = %25, %22
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  store i8 1, ptr %29, align 1, !tbaa !11
  br label %30

30:                                               ; preds = %28, %25
  %31 = call noundef i32 @_ZN7glslang13TInputScanner3getEv(ptr noundef nonnull align 8 dereferenceable(90) %6)
  %32 = call noundef i32 @_ZN7glslang13TInputScanner4peekEv(ptr noundef nonnull align 8 dereferenceable(90) %6)
  store i32 %32, ptr %5, align 4, !tbaa !9
  br label %8, !llvm.loop !13

33:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  ret void
}

; 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: mustprogress uwtable
declare dso_local noundef i32 @_ZN7glslang13TInputScanner3getEv(ptr noundef nonnull align 8 dereferenceable(90)) #0 align 2

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

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
define dso_local void @_ZN7glslang13TInputScanner17consumeWhiteSpaceERb(ptr noundef nonnull align 8 dereferenceable(90) %0, ptr nocapture noundef nonnull writeonly align 1 dereferenceable(1) %1) local_unnamed_addr #0 align 2 {
  br label %3

3:                                                ; preds = %6, %2
  %4 = tail call noundef i32 @_ZN7glslang13TInputScanner4peekEv(ptr noundef nonnull align 8 dereferenceable(90) %0)
  switch i32 %4, label %8 [
    i32 13, label %5
    i32 10, label %5
    i32 9, label %6
    i32 32, label %6
  ]

5:                                                ; preds = %3, %3
  store i8 1, ptr %1, align 1, !tbaa !5
  br label %6

6:                                                ; preds = %3, %3, %5
  %7 = tail call noundef i32 @_ZN7glslang13TInputScanner3getEv(ptr noundef nonnull align 8 dereferenceable(90) %0)
  br label %3, !llvm.loop !9

8:                                                ; preds = %3
  ret void
}

; 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 i32 @_ZN7glslang13TInputScanner3getEv(ptr noundef nonnull align 8 dereferenceable(90)) local_unnamed_addr #0 align 2

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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass