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

; 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"

%struct.GumboVector = type { ptr, i32, i32 }
%struct.GumboAttribute = type { i32, ptr, %struct.GumboStringPiece, ptr, %struct.GumboStringPiece, %struct.GumboSourcePosition, %struct.GumboSourcePosition, %struct.GumboSourcePosition, %struct.GumboSourcePosition }
%struct.GumboStringPiece = type { ptr, i64 }
%struct.GumboSourcePosition = type { i32, i32, i32 }

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

9:                                                ; preds = %36, %2
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.GumboVector, ptr %11, i32 0, i32 1
  %13 = load i32, ptr %12, align 8, !tbaa !11
  %14 = icmp ult i32 %10, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %9
  store i32 2, ptr %7, align 4
  br label %39

16:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.GumboVector, ptr %17, i32 0, i32 0
  %19 = load ptr, ptr %18, align 8, !tbaa !13
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds ptr, ptr %19, i64 %21
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  store ptr %23, ptr %8, align 8, !tbaa !5
  %24 = load ptr, ptr %8, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.GumboAttribute, ptr %24, i32 0, i32 1
  %26 = load ptr, ptr %25, align 8, !tbaa !14
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = call i32 @strcasecmp(ptr noundef %26, ptr noundef %27) #4
  %29 = icmp ne i32 %28, 0
  br i1 %29, label %32, label %30

30:                                               ; preds = %16
  %31 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %31, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %33

32:                                               ; preds = %16
  store i32 0, ptr %7, align 4
  br label %33

33:                                               ; preds = %32, %30
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %34 = load i32, ptr %7, align 4
  switch i32 %34, label %39 [
    i32 0, label %35
  ]

35:                                               ; preds = %33
  br label %36

36:                                               ; preds = %35
  %37 = load i32, ptr %6, align 4, !tbaa !9
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %6, align 4, !tbaa !9
  br label %9, !llvm.loop !19

39:                                               ; preds = %33, %15
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  %40 = load i32, ptr %7, align 4
  switch i32 %40, label %44 [
    i32 2, label %41
    i32 1, label %42
  ]

41:                                               ; preds = %39
  store ptr null, ptr %3, align 8
  br label %42

42:                                               ; preds = %41, %39
  %43 = load ptr, ptr %3, align 8
  ret ptr %43

44:                                               ; preds = %39
  unreachable
}

; 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 i32 @strcasecmp(ptr noundef, ptr noundef) #2

; 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 }
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 = !{!12, !10, i64 8}
!12 = !{!"", !6, i64 0, !10, i64 8, !10, i64 12}
!13 = !{!12, !6, i64 0}
!14 = !{!15, !6, i64 8}
!15 = !{!"", !10, i64 0, !6, i64 8, !16, i64 16, !6, i64 32, !16, i64 40, !18, i64 56, !18, i64 68, !18, i64 80, !18, i64 92}
!16 = !{!"", !6, i64 0, !17, i64 8}
!17 = !{!"long", !7, i64 0}
!18 = !{!"", !10, i64 0, !10, i64 4, !10, i64 8}
!19 = distinct !{!19, !20}
!20 = !{!"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(read) uwtable
define dso_local ptr @gumbo_get_attribute(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  %4 = load i32, ptr %3, align 8, !tbaa !5
  %.not13.not = icmp eq i32 %4, 0
  br i1 %.not13.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %5 = load ptr, ptr %0, align 8, !tbaa !11
  %wide.trip.count = zext i32 %4 to i64
  br label %7

6:                                                ; preds = %7
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %7, !llvm.loop !12

7:                                                ; preds = %.lr.ph, %6
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %6 ]
  %8 = getelementptr inbounds ptr, ptr %5, i64 %indvars.iv
  %9 = load ptr, ptr %8, align 8, !tbaa !14
  %10 = getelementptr inbounds i8, ptr %9, i64 8
  %11 = load ptr, ptr %10, align 8, !tbaa !15
  %12 = tail call i32 @strcasecmp(ptr noundef %11, ptr noundef %1) #2
  %.not.not = icmp eq i32 %12, 0
  br i1 %.not.not, label %._crit_edge, label %6

._crit_edge:                                      ; preds = %7, %6, %2
  %spec.select = phi ptr [ null, %2 ], [ null, %6 ], [ %9, %7 ]
  ret ptr %spec.select
}

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

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 = { 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, !10, i64 8}
!6 = !{!"", !7, i64 0, !10, i64 8, !10, i64 12}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = !{!7, !7, i64 0}
!15 = !{!16, !7, i64 8}
!16 = !{!"", !10, i64 0, !7, i64 8, !17, i64 16, !7, i64 32, !17, i64 40, !19, i64 56, !19, i64 68, !19, i64 80, !19, i64 92}
!17 = !{!"", !7, i64 0, !18, i64 8}
!18 = !{!"long", !8, i64 0}
!19 = !{!"", !10, i64 0, !10, i64 4, !10, i64 8}


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