; LLVM IR from clibs/clib :: deps/gumbo-parser (tag)

; 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"

@kGumboTagNames = external dso_local global [151 x ptr], align 16

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @gumbo_tag_enum(ptr noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %21, %1
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = icmp slt i32 %7, 150
  br i1 %8, label %10, label %9

9:                                                ; preds = %6
  store i32 2, ptr %5, align 4
  br label %24

10:                                               ; preds = %6
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = load i32, ptr %4, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [151 x ptr], ptr @kGumboTagNames, i64 0, i64 %13
  %15 = load ptr, ptr %14, align 8, !tbaa !5
  %16 = call i32 @strcasecmp(ptr noundef %11, ptr noundef %15) #4
  %17 = icmp eq i32 %16, 0
  br i1 %17, label %18, label %20

18:                                               ; preds = %10
  %19 = load i32, ptr %4, align 4, !tbaa !9
  store i32 %19, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %24

20:                                               ; preds = %10
  br label %21

21:                                               ; preds = %20
  %22 = load i32, ptr %4, align 4, !tbaa !9
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr %4, align 4, !tbaa !9
  br label %6, !llvm.loop !11

24:                                               ; preds = %18, %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  %25 = load i32, ptr %5, align 4
  switch i32 %25, label %29 [
    i32 2, label %26
    i32 1, label %27
  ]

26:                                               ; preds = %24
  store i32 149, ptr %2, align 4
  br label %27

27:                                               ; preds = %26, %24
  %28 = load i32, ptr %2, align 4
  ret i32 %28

29:                                               ; preds = %24
  unreachable
}

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strcasecmp(ptr noundef, ptr noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 }
attributes #4 = { nounwind willreturn memory(read) }

!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 = !{!10, !10, i64 0}
!10 = !{!"int", !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"

@kGumboTagNames = external dso_local local_unnamed_addr global [151 x ptr], align 16

; Function Attrs: nofree nounwind memory(read) uwtable
define dso_local i32 @gumbo_tag_enum(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  br label %2

2:                                                ; preds = %1, %7
  %indvars.iv = phi i64 [ 0, %1 ], [ %indvars.iv.next, %7 ]
  %3 = getelementptr inbounds [151 x ptr], ptr @kGumboTagNames, i64 0, i64 %indvars.iv
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = tail call i32 @strcasecmp(ptr noundef %0, ptr noundef %4) #3
  %6 = icmp eq i32 %5, 0
  br i1 %6, label %.split.loop.exit, label %7

7:                                                ; preds = %2
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond = icmp eq i64 %indvars.iv.next, 150
  br i1 %exitcond, label %.split.loop.exit10, label %2, !llvm.loop !9

.split.loop.exit:                                 ; preds = %2
  %8 = trunc nuw nsw i64 %indvars.iv to i32
  br label %.split.loop.exit10

.split.loop.exit10:                               ; preds = %7, %.split.loop.exit
  %.06.lcssa = phi i32 [ %8, %.split.loop.exit ], [ 150, %7 ]
  %spec.select = tail call i32 @llvm.umin.i32(i32 %.06.lcssa, i32 149)
  ret i32 %spec.select
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(read)
declare i32 @strcasecmp(ptr nocapture noundef, ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.umin.i32(i32, i32) #2

attributes #0 = { nofree nounwind memory(read) 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(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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { nounwind willreturn memory(read) }

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


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass