; LLVM IR from totte174/minesolve :: src (equations)

; 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.Equation = type { %struct.Mask, i32 }
%struct.Mask = type { [3 x i64] }

; 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 void @remove_subequation(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %27, %2
  %7 = load i32, ptr %5, align 4, !tbaa !9
  %8 = icmp slt i32 %7, 3
  br i1 %8, label %10, label %9

9:                                                ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %30

10:                                               ; preds = %6
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.Equation, ptr %11, i32 0, i32 0
  %13 = getelementptr inbounds %struct.Mask, ptr %12, i32 0, i32 0
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [3 x i64], ptr %13, i64 0, i64 %15
  %17 = load i64, ptr %16, align 8, !tbaa !11
  %18 = xor i64 %17, -1
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.Equation, ptr %19, i32 0, i32 0
  %21 = getelementptr inbounds %struct.Mask, ptr %20, i32 0, i32 0
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [3 x i64], ptr %21, i64 0, i64 %23
  %25 = load i64, ptr %24, align 8, !tbaa !11
  %26 = and i64 %25, %18
  store i64 %26, ptr %24, align 8, !tbaa !11
  br label %27

27:                                               ; preds = %10
  %28 = load i32, ptr %5, align 4, !tbaa !9
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %5, align 4, !tbaa !9
  br label %6, !llvm.loop !13

30:                                               ; preds = %9
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.Equation, ptr %31, i32 0, i32 1
  %33 = load i32, ptr %32, align 8, !tbaa !15
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.Equation, ptr %34, i32 0, i32 1
  %36 = load i32, ptr %35, align 8, !tbaa !15
  %37 = sub nsw i32 %36, %33
  store i32 %37, ptr %35, align 8, !tbaa !15
  ret void
}

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 }

!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, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{!16, !10, i64 24}
!16 = !{!"Equation", !17, i64 0, !10, i64 24}
!17 = !{!"Mask", !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: readwrite) uwtable
define dso_local void @remove_subequation(ptr nocapture noundef readonly %0, ptr nocapture noundef %1) local_unnamed_addr #0 {
  %3 = load i64, ptr %0, align 8, !tbaa !5
  %4 = xor i64 %3, -1
  %5 = load i64, ptr %1, align 8, !tbaa !5
  %6 = and i64 %5, %4
  store i64 %6, ptr %1, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i64, ptr %7, align 8, !tbaa !5
  %9 = xor i64 %8, -1
  %10 = getelementptr inbounds i8, ptr %1, i64 8
  %11 = load i64, ptr %10, align 8, !tbaa !5
  %12 = and i64 %11, %9
  store i64 %12, ptr %10, align 8, !tbaa !5
  %13 = getelementptr inbounds i8, ptr %0, i64 16
  %14 = load i64, ptr %13, align 8, !tbaa !5
  %15 = xor i64 %14, -1
  %16 = getelementptr inbounds i8, ptr %1, i64 16
  %17 = load i64, ptr %16, align 8, !tbaa !5
  %18 = and i64 %17, %15
  store i64 %18, ptr %16, align 8, !tbaa !5
  %19 = getelementptr inbounds i8, ptr %0, i64 24
  %20 = load i32, ptr %19, align 8, !tbaa !9
  %21 = getelementptr inbounds i8, ptr %1, i64 24
  %22 = load i32, ptr %21, align 8, !tbaa !9
  %23 = sub nsw i32 %22, %20
  store i32 %23, ptr %21, align 8, !tbaa !9
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !12, i64 24}
!10 = !{!"Equation", !11, i64 0, !12, i64 24}
!11 = !{!"Mask", !7, i64 0}
!12 = !{!"int", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass