; LLVM IR from buaazp/zimg :: deps/libevhtp (evhtp)

; 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.evhtp_kvs_s = type { ptr, ptr }
%struct.evhtp_kv_s = type { ptr, ptr, i64, i64, i8, i8, %struct.anon.1 }
%struct.anon.1 = type { ptr, ptr }

; 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 ptr @evhtp_kv_find(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  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 8, ptr %6) #3
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = icmp eq ptr %8, null
  br i1 %9, label %13, label %10

10:                                               ; preds = %2
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = icmp eq ptr %11, null
  br i1 %12, label %13, label %14

13:                                               ; preds = %10, %2
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %39

14:                                               ; preds = %10
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.evhtp_kvs_s, ptr %15, i32 0, i32 0
  %17 = load ptr, ptr %16, align 8, !tbaa !9
  store ptr %17, ptr %6, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %33, %14
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = icmp ne ptr %19, null
  br i1 %20, label %21, label %38

21:                                               ; preds = %18
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.evhtp_kv_s, ptr %22, i32 0, i32 0
  %24 = load ptr, ptr %23, align 8, !tbaa !11
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = call i32 @strcasecmp(ptr noundef %24, ptr noundef %25) #4
  %27 = icmp eq i32 %26, 0
  br i1 %27, label %28, label %32

28:                                               ; preds = %21
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.evhtp_kv_s, ptr %29, i32 0, i32 1
  %31 = load ptr, ptr %30, align 8, !tbaa !15
  store ptr %31, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %39

32:                                               ; preds = %21
  br label %33

33:                                               ; preds = %32
  %34 = load ptr, ptr %6, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.evhtp_kv_s, ptr %34, i32 0, i32 6
  %36 = getelementptr inbounds %struct.anon.1, ptr %35, i32 0, i32 0
  %37 = load ptr, ptr %36, align 8, !tbaa !16
  store ptr %37, ptr %6, align 8, !tbaa !5
  br label %18, !llvm.loop !17

38:                                               ; preds = %18
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %39

39:                                               ; preds = %38, %28, %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %40 = load ptr, ptr %3, align 8
  ret ptr %40
}

; 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, !6, i64 0}
!10 = !{!"evhtp_kvs_s", !6, i64 0, !6, i64 8}
!11 = !{!12, !6, i64 0}
!12 = !{!"evhtp_kv_s", !6, i64 0, !6, i64 8, !13, i64 16, !13, i64 24, !7, i64 32, !7, i64 33, !14, i64 40}
!13 = !{!"long", !7, i64 0}
!14 = !{!"", !6, i64 0, !6, i64 8}
!15 = !{!12, !6, i64 8}
!16 = !{!12, !6, i64 40}
!17 = distinct !{!17, !18}
!18 = !{!"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 @evhtp_kv_find(ptr noundef readonly %0, ptr noundef readonly %1) local_unnamed_addr #0 {
  %3 = icmp eq ptr %0, null
  %4 = icmp eq ptr %1, null
  %or.cond = or i1 %3, %4
  br i1 %or.cond, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %2
  %.014 = load ptr, ptr %0, align 8, !tbaa !5
  %.not15 = icmp eq ptr %.014, null
  br i1 %.not15, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %11
  %.016 = phi ptr [ %.0, %11 ], [ %.014, %.preheader ]
  %5 = load ptr, ptr %.016, align 8, !tbaa !9
  %6 = tail call i32 @strcasecmp(ptr noundef %5, ptr noundef %1) #2
  %7 = icmp eq i32 %6, 0
  br i1 %7, label %8, label %11

8:                                                ; preds = %.lr.ph
  %9 = getelementptr inbounds i8, ptr %.016, i64 8
  %10 = load ptr, ptr %9, align 8, !tbaa !13
  br label %.loopexit

11:                                               ; preds = %.lr.ph
  %12 = getelementptr inbounds i8, ptr %.016, i64 40
  %.0 = load ptr, ptr %12, align 8, !tbaa !5
  %.not = icmp eq ptr %.0, null
  br i1 %.not, label %.loopexit, label %.lr.ph, !llvm.loop !14

.loopexit:                                        ; preds = %11, %.preheader, %2, %8
  %.010 = phi ptr [ %10, %8 ], [ null, %2 ], [ null, %.preheader ], [ null, %11 ]
  ret ptr %.010
}

; 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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"evhtp_kv_s", !6, i64 0, !6, i64 8, !11, i64 16, !11, i64 24, !7, i64 32, !7, i64 33, !12, i64 40}
!11 = !{!"long", !7, i64 0}
!12 = !{!"", !6, i64 0, !6, i64 8}
!13 = !{!10, !6, i64 8}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass