; LLVM IR from lzyrapx/Competitive-Programming :: ACdream/1116（扩展KMP+矩阵快速幂）.ll (Z6qpoweri)

; 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.matrix = type { [2 x [2 x i64]] }

@M = external dso_local global %struct.matrix, align 8

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z5multi6matrixS_(ptr dead_on_unwind noalias writable sret(%struct.matrix) align 8, ptr noundef byval(%struct.matrix) align 8, ptr noundef byval(%struct.matrix) align 8) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6qpoweri(ptr dead_on_unwind noalias writable sret(%struct.matrix) align 8 %0, i32 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca %struct.matrix, align 8
  %5 = alloca %struct.matrix, align 8
  %6 = alloca %struct.matrix, align 8
  %7 = alloca %struct.matrix, align 8
  %8 = alloca %struct.matrix, align 8
  %9 = alloca i32, align 4
  %10 = alloca %struct.matrix, align 8
  %11 = alloca %struct.matrix, align 8
  store i32 %1, ptr %3, align 4, !tbaa !5
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = icmp eq i32 %12, 1
  br i1 %13, label %14, label %15

14:                                               ; preds = %2
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %0, ptr align 8 @M, i64 32, i1 false), !tbaa.struct !9
  br label %24

15:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 32, ptr %4) #4
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = ashr i32 %16, 1
  call void @_Z6qpoweri(ptr dead_on_unwind writable sret(%struct.matrix) align 8 %4, i32 noundef %17)
  %18 = load i32, ptr %3, align 4, !tbaa !5
  %19 = and i32 %18, 1
  %20 = icmp ne i32 %19, 0
  br i1 %20, label %21, label %22

21:                                               ; preds = %15
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %6, ptr align 8 %4, i64 32, i1 false), !tbaa.struct !9
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %7, ptr align 8 %4, i64 32, i1 false), !tbaa.struct !9
  call void @_Z5multi6matrixS_(ptr dead_on_unwind writable sret(%struct.matrix) align 8 %5, ptr noundef byval(%struct.matrix) align 8 %6, ptr noundef byval(%struct.matrix) align 8 %7)
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %8, ptr align 8 @M, i64 32, i1 false), !tbaa.struct !9
  call void @_Z5multi6matrixS_(ptr dead_on_unwind writable sret(%struct.matrix) align 8 %0, ptr noundef byval(%struct.matrix) align 8 %5, ptr noundef byval(%struct.matrix) align 8 %8)
  store i32 1, ptr %9, align 4
  br label %23

22:                                               ; preds = %15
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %10, ptr align 8 %4, i64 32, i1 false), !tbaa.struct !9
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %11, ptr align 8 %4, i64 32, i1 false), !tbaa.struct !9
  call void @_Z5multi6matrixS_(ptr dead_on_unwind writable sret(%struct.matrix) align 8 %0, ptr noundef byval(%struct.matrix) align 8 %10, ptr noundef byval(%struct.matrix) align 8 %11)
  store i32 1, ptr %9, align 4
  br label %23

23:                                               ; preds = %22, %21
  call void @llvm.lifetime.end.p0(i64 32, ptr %4) #4
  br label %24

24:                                               ; preds = %23, %14
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

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" }
attributes #1 = { mustprogress 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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{i64 0, i64 32, !10}
!10 = !{!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"

%struct.matrix = type { [2 x [2 x i64]] }

@M = external dso_local local_unnamed_addr global %struct.matrix, align 8

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z5multi6matrixS_(ptr dead_on_unwind noalias writable sret(%struct.matrix) align 8, ptr noundef byval(%struct.matrix) align 8, ptr noundef byval(%struct.matrix) align 8) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z6qpoweri(ptr dead_on_unwind noalias writable sret(%struct.matrix) align 8 %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = alloca %struct.matrix, align 8
  %4 = alloca %struct.matrix, align 8
  %5 = icmp eq i32 %1, 1
  br i1 %5, label %6, label %7

6:                                                ; preds = %2
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull align 8 dereferenceable(32) @M, i64 32, i1 false), !tbaa.struct !5
  br label %13

7:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %3) #3
  %8 = ashr i32 %1, 1
  call void @_Z6qpoweri(ptr dead_on_unwind nonnull writable sret(%struct.matrix) align 8 %3, i32 noundef %8)
  %9 = and i32 %1, 1
  %.not = icmp eq i32 %9, 0
  br i1 %.not, label %11, label %10

10:                                               ; preds = %7
  call void @_Z5multi6matrixS_(ptr dead_on_unwind nonnull writable sret(%struct.matrix) align 8 %4, ptr noundef nonnull byval(%struct.matrix) align 8 %3, ptr noundef nonnull byval(%struct.matrix) align 8 %3)
  call void @_Z5multi6matrixS_(ptr dead_on_unwind writable sret(%struct.matrix) align 8 %0, ptr noundef nonnull byval(%struct.matrix) align 8 %4, ptr noundef nonnull byval(%struct.matrix) align 8 @M)
  br label %12

11:                                               ; preds = %7
  call void @_Z5multi6matrixS_(ptr dead_on_unwind writable sret(%struct.matrix) align 8 %0, ptr noundef nonnull byval(%struct.matrix) align 8 %3, ptr noundef nonnull byval(%struct.matrix) align 8 %3)
  br label %12

12:                                               ; preds = %11, %10
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #3
  br label %13

13:                                               ; preds = %12, %6
  ret void
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

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" }
attributes #1 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 = !{i64 0, i64 32, !6}
!6 = !{!7, !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: DSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass