; LLVM IR from abobija/esp-discord :: src/helpers (estr)

; 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: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @estr_chr_is_ws(i8 noundef signext) #1

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @estr_is_trimmed(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = icmp ne ptr %3, null
  br i1 %4, label %6, label %5

5:                                                ; preds = %1
  br label %23

6:                                                ; preds = %1
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %7, i64 0
  %9 = load i8, ptr %8, align 1, !tbaa !9
  %10 = call zeroext i1 @estr_chr_is_ws(i8 noundef signext %9)
  br i1 %10, label %20, label %11

11:                                               ; preds = %6
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = call i64 @strlen(ptr noundef %13) #2
  %15 = sub i64 %14, 1
  %16 = getelementptr inbounds i8, ptr %12, i64 %15
  %17 = load i8, ptr %16, align 1, !tbaa !9
  %18 = call zeroext i1 @estr_chr_is_ws(i8 noundef signext %17)
  %19 = xor i1 %18, true
  br label %20

20:                                               ; preds = %11, %6
  %21 = phi i1 [ false, %6 ], [ %19, %11 ]
  %22 = zext i1 %21 to i32
  br label %23

23:                                               ; preds = %20, %5
  %24 = phi i32 [ 0, %5 ], [ %22, %20 ]
  %25 = icmp ne i32 %24, 0
  ret i1 %25
}

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 = !{!7, !7, 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(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @estr_chr_is_ws(i8 noundef signext) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @estr_is_trimmed(ptr noundef readonly %0) local_unnamed_addr #1 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %12, label %2

2:                                                ; preds = %1
  %3 = load i8, ptr %0, align 1, !tbaa !5
  %4 = tail call zeroext i1 @estr_chr_is_ws(i8 noundef signext %3)
  br i1 %4, label %12, label %5

5:                                                ; preds = %2
  %6 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %0) #2
  %7 = getelementptr i8, ptr %0, i64 %6
  %8 = getelementptr i8, ptr %7, i64 -1
  %9 = load i8, ptr %8, align 1, !tbaa !5
  %10 = tail call zeroext i1 @estr_chr_is_ws(i8 noundef signext %9)
  %11 = xor i1 %10, true
  br label %12

12:                                               ; preds = %2, %5, %1
  %13 = phi i1 [ false, %1 ], [ false, %2 ], [ %11, %5 ]
  ret i1 %13
}

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


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