; LLVM IR from LamberttLiu/CS-Basic-SelfLearning :: 【DSA】数据结构与算法（C语言版本）/src/string (pattern_matching_kmp)

; 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"

@next = external dso_local global [8 x i32], align 16
@__const.main.mainStr = external hidden unnamed_addr constant [11 x i8], align 1
@__const.main.patternStr = external hidden unnamed_addr constant [9 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [34 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [36 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [38 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @GetNext(ptr noundef, ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @Index_KMP(ptr noundef, i32 noundef, ptr noundef, i32 noundef) #0

declare i32 @printf(ptr noundef, ...) #3

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca [11 x i8], align 1
  %3 = alloca [9 x i8], align 1
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 11, ptr %2) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %2, ptr align 1 @__const.main.mainStr, i64 11, i1 false)
  call void @llvm.lifetime.start.p0(i64 9, ptr %3) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %3, ptr align 1 @__const.main.patternStr, i64 9, i1 false)
  %6 = getelementptr inbounds [11 x i8], ptr %2, i64 0, i64 0
  %7 = getelementptr inbounds [11 x i8], ptr %2, i64 0, i64 0
  %8 = call i64 @strlen(ptr noundef %7) #6
  %9 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, ptr noundef %6, i64 noundef %8)
  %10 = getelementptr inbounds [9 x i8], ptr %3, i64 0, i64 0
  %11 = getelementptr inbounds [9 x i8], ptr %3, i64 0, i64 0
  %12 = call i64 @strlen(ptr noundef %11) #6
  %13 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, ptr noundef %10, i64 noundef %12)
  %14 = getelementptr inbounds [9 x i8], ptr %3, i64 0, i64 0
  call void @GetNext(ptr noundef %14, ptr noundef @next)
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  store i64 0, ptr %4, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %25, %0
  %16 = load i64, ptr %4, align 8, !tbaa !5
  %17 = icmp ult i64 %16, 8
  br i1 %17, label %19, label %18

18:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  br label %28

19:                                               ; preds = %15
  %20 = load i64, ptr %4, align 8, !tbaa !5
  %21 = load i64, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds [8 x i32], ptr @next, i64 0, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !9
  %24 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i64 noundef %20, i32 noundef %23)
  br label %25

25:                                               ; preds = %19
  %26 = load i64, ptr %4, align 8, !tbaa !5
  %27 = add i64 %26, 1
  store i64 %27, ptr %4, align 8, !tbaa !5
  br label %15, !llvm.loop !11

28:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  %29 = getelementptr inbounds [11 x i8], ptr %2, i64 0, i64 0
  %30 = getelementptr inbounds [11 x i8], ptr %2, i64 0, i64 0
  %31 = call i64 @strlen(ptr noundef %30) #6
  %32 = trunc i64 %31 to i32
  %33 = getelementptr inbounds [9 x i8], ptr %3, i64 0, i64 0
  %34 = getelementptr inbounds [9 x i8], ptr %3, i64 0, i64 0
  %35 = call i64 @strlen(ptr noundef %34) #6
  %36 = trunc i64 %35 to i32
  %37 = call i32 @Index_KMP(ptr noundef %29, i32 noundef %32, ptr noundef %33, i32 noundef %36)
  store i32 %37, ptr %5, align 4, !tbaa !9
  %38 = load i32, ptr %5, align 4, !tbaa !9
  %39 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %38)
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 9, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 11, ptr %2) #5
  %40 = load i32, ptr %1, align 4
  ret i32 %40
}

; 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) #4

attributes #0 = { 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { "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 #4 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { nounwind }
attributes #6 = { 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 = !{!"long", !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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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"

@next = external dso_local global [8 x i32], align 16
@__const.main.mainStr = external hidden unnamed_addr constant [11 x i8], align 1
@__const.main.patternStr = external hidden unnamed_addr constant [9 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [34 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [36 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [38 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @GetNext(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @Index_KMP(ptr noundef, i32 noundef, ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca [11 x i8], align 1
  %2 = alloca [9 x i8], align 1
  call void @llvm.lifetime.start.p0(i64 11, ptr nonnull %1) #5
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 1 dereferenceable(11) %1, ptr noundef nonnull align 1 dereferenceable(11) @__const.main.mainStr, i64 11, i1 false)
  call void @llvm.lifetime.start.p0(i64 9, ptr nonnull %2) #5
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 1 dereferenceable(9) %2, ptr noundef nonnull align 1 dereferenceable(9) @__const.main.patternStr, i64 9, i1 false)
  %3 = call i64 @strlen(ptr noundef nonnull dereferenceable(1) %1) #6
  %4 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, ptr noundef nonnull %1, i64 noundef %3)
  %5 = call i64 @strlen(ptr noundef nonnull dereferenceable(1) %2) #6
  %6 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, ptr noundef nonnull %2, i64 noundef %5)
  call void @GetNext(ptr noundef nonnull %2, ptr noundef nonnull @next)
  %7 = load i32, ptr @next, align 16, !tbaa !5
  %8 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef 0, i32 noundef %7)
  %9 = load i32, ptr getelementptr inbounds (i8, ptr @next, i64 4), align 4, !tbaa !5
  %10 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef 1, i32 noundef %9)
  %11 = load i32, ptr getelementptr inbounds (i8, ptr @next, i64 8), align 8, !tbaa !5
  %12 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef 2, i32 noundef %11)
  %13 = load i32, ptr getelementptr inbounds (i8, ptr @next, i64 12), align 4, !tbaa !5
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef 3, i32 noundef %13)
  %15 = load i32, ptr getelementptr inbounds (i8, ptr @next, i64 16), align 16, !tbaa !5
  %16 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef 4, i32 noundef %15)
  %17 = load i32, ptr getelementptr inbounds (i8, ptr @next, i64 20), align 4, !tbaa !5
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef 5, i32 noundef %17)
  %19 = load i32, ptr getelementptr inbounds (i8, ptr @next, i64 24), align 8, !tbaa !5
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef 6, i32 noundef %19)
  %21 = load i32, ptr getelementptr inbounds (i8, ptr @next, i64 28), align 4, !tbaa !5
  %22 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef 7, i32 noundef %21)
  %23 = call i64 @strlen(ptr noundef nonnull dereferenceable(1) %1) #6
  %24 = trunc i64 %23 to i32
  %25 = call i64 @strlen(ptr noundef nonnull dereferenceable(1) %2) #6
  %26 = trunc i64 %25 to i32
  %27 = call i32 @Index_KMP(ptr noundef nonnull %1, i32 noundef %24, ptr noundef nonnull %2, i32 noundef %26)
  %28 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %27)
  call void @llvm.lifetime.end.p0(i64 9, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 11, ptr nonnull %1) #5
  ret i32 0
}

; 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) #4

attributes #0 = { 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 nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { nofree nounwind "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 #4 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { nounwind }
attributes #6 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


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