; LLVM IR from snowballstem/snowball :: runtime (utilities)

; 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.SN_env = type { ptr, i32, i32, i32, i32, i32, ptr, ptr }

; Function Attrs: nounwind willreturn memory(read)
declare i32 @memcmp(ptr noundef, ptr noundef, i64 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @eq_s_b(ptr noundef %0, i32 noundef %1, ptr noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.SN_env, ptr %8, i32 0, i32 1
  %10 = load i32, ptr %9, align 8, !tbaa !11
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.SN_env, ptr %11, i32 0, i32 3
  %13 = load i32, ptr %12, align 8, !tbaa !13
  %14 = sub nsw i32 %10, %13
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %36, label %17

17:                                               ; preds = %3
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.SN_env, ptr %18, i32 0, i32 0
  %20 = load ptr, ptr %19, align 8, !tbaa !14
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.SN_env, ptr %21, i32 0, i32 1
  %23 = load i32, ptr %22, align 8, !tbaa !11
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds i8, ptr %20, i64 %24
  %26 = load i32, ptr %6, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = sub i64 0, %27
  %29 = getelementptr inbounds i8, ptr %25, i64 %28
  %30 = load ptr, ptr %7, align 8, !tbaa !5
  %31 = load i32, ptr %6, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = mul i64 %32, 1
  %34 = call i32 @memcmp(ptr noundef %29, ptr noundef %30, i64 noundef %33) #2
  %35 = icmp ne i32 %34, 0
  br i1 %35, label %36, label %37

36:                                               ; preds = %17, %3
  store i32 0, ptr %4, align 4
  br label %43

37:                                               ; preds = %17
  %38 = load i32, ptr %6, align 4, !tbaa !9
  %39 = load ptr, ptr %5, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.SN_env, ptr %39, i32 0, i32 1
  %41 = load i32, ptr %40, align 8, !tbaa !11
  %42 = sub nsw i32 %41, %38
  store i32 %42, ptr %40, align 8, !tbaa !11
  store i32 1, ptr %4, align 4
  br label %43

43:                                               ; preds = %37, %36
  %44 = load i32, ptr %4, align 4
  ret i32 %44
}

attributes #0 = { 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 #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) }

!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 = !{!"SN_env", !6, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !6, i64 32, !6, i64 40}
!13 = !{!12, !10, i64 16}
!14 = !{!12, !6, i64 0}


; 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 nofree nounwind willreturn memory(read, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local range(i32 0, 2) i32 @eq_s_b(ptr nocapture noundef %0, i32 noundef %1, ptr nocapture noundef readonly %2) local_unnamed_addr #0 {
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load i32, ptr %4, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  %7 = load i32, ptr %6, align 8, !tbaa !11
  %8 = sub nsw i32 %5, %7
  %9 = icmp slt i32 %8, %1
  br i1 %9, label %19, label %10

10:                                               ; preds = %3
  %11 = load ptr, ptr %0, align 8, !tbaa !12
  %12 = sext i32 %5 to i64
  %13 = getelementptr inbounds i8, ptr %11, i64 %12
  %14 = sext i32 %1 to i64
  %15 = sub nsw i64 0, %14
  %16 = getelementptr inbounds i8, ptr %13, i64 %15
  %bcmp = tail call i32 @bcmp(ptr %16, ptr %2, i64 %14)
  %.not = icmp eq i32 %bcmp, 0
  br i1 %.not, label %17, label %19

17:                                               ; preds = %10
  %18 = sub nsw i32 %5, %1
  store i32 %18, ptr %4, align 8, !tbaa !5
  br label %19

19:                                               ; preds = %3, %10, %17
  %.0 = phi i32 [ 1, %17 ], [ 0, %10 ], [ 0, %3 ]
  ret i32 %.0
}

; Function Attrs: nofree nounwind willreturn memory(argmem: read)
declare i32 @bcmp(ptr nocapture, ptr nocapture, i64) local_unnamed_addr #1

attributes #0 = { mustprogress nofree nounwind willreturn memory(read, argmem: readwrite, inaccessiblemem: none) 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 = { nofree nounwind willreturn memory(argmem: 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 = !{!"SN_env", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !7, i64 32, !7, i64 40}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !10, i64 16}
!12 = !{!6, !7, i64 0}


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