; LLVM IR from albertobsd/keyhunt :: gmp256k1/Int.ll (ZN3Int6IsZeroEv)

; 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"

%class.Int = type { [1 x %struct.__mpz_struct] }
%struct.__mpz_struct = type { i32, i32, ptr }

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_ZN3Int6IsZeroEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #0 align 2 {
  %2 = alloca i1, align 1
  %3 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  %4 = load ptr, ptr %3, align 8
  %5 = getelementptr inbounds %class.Int, ptr %4, i32 0, i32 0
  %6 = getelementptr inbounds [1 x %struct.__mpz_struct], ptr %5, i64 0, i64 0
  %7 = getelementptr inbounds %struct.__mpz_struct, ptr %6, i32 0, i32 1
  %8 = load i32, ptr %7, align 4, !tbaa !9
  %9 = icmp slt i32 %8, 0
  br i1 %9, label %10, label %11

10:                                               ; preds = %1
  br label %18

11:                                               ; preds = %1
  %12 = getelementptr inbounds %class.Int, ptr %4, i32 0, i32 0
  %13 = getelementptr inbounds [1 x %struct.__mpz_struct], ptr %12, i64 0, i64 0
  %14 = getelementptr inbounds %struct.__mpz_struct, ptr %13, i32 0, i32 1
  %15 = load i32, ptr %14, align 4, !tbaa !9
  %16 = icmp sgt i32 %15, 0
  %17 = zext i1 %16 to i32
  br label %18

18:                                               ; preds = %11, %10
  %19 = phi i32 [ -1, %10 ], [ %17, %11 ]
  %20 = icmp eq i32 %19, 0
  br i1 %20, label %21, label %22

21:                                               ; preds = %18
  store i1 true, ptr %2, align 1
  br label %23

22:                                               ; preds = %18
  store i1 false, ptr %2, align 1
  br label %23

23:                                               ; preds = %22, %21
  %24 = load i1, ptr %2, align 1
  ret i1 %24
}

attributes #0 = { mustprogress 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" }

!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++ TBAA"}
!9 = !{!10, !11, i64 4}
!10 = !{!"_ZTS12__mpz_struct", !11, i64 0, !11, i64 4, !6, i64 8}
!11 = !{!"int", !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 norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef zeroext i1 @_ZN3Int6IsZeroEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 4
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %.not = icmp eq i32 %3, 0
  ret i1 %.not
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: 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" }

!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, !7, i64 4}
!6 = !{!"_ZTS12__mpz_struct", !7, i64 0, !7, i64 4, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}


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