; LLVM IR from JessonYue/LeetCodeLearning :: Array/yangxin/第五周练习6_28-7_4/elf解析 (elf)

; 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.Elf64_Ehdr = type { [16 x i8], i16, i16, i32, i64, i64, i64, i32, i16, i16, i16, i16, i16, i16 }

@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.25 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.26 = external hidden unnamed_addr constant [5 x i8], align 1

declare i32 @printf(ptr noundef, ...) #0

; Function Attrs: nounwind uwtable
define dso_local void @printEI_PAD(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = call i32 (ptr, ...) @printf(ptr noundef @.str.25)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 9, ptr %3, align 4, !tbaa !9
  br label %5

5:                                                ; preds = %18, %1
  %6 = load i32, ptr %3, align 4, !tbaa !9
  %7 = icmp slt i32 %6, 16
  br i1 %7, label %9, label %8

8:                                                ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %21

9:                                                ; preds = %5
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.Elf64_Ehdr, ptr %10, i32 0, i32 0
  %12 = load i32, ptr %3, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [16 x i8], ptr %11, i64 0, i64 %13
  %15 = load i8, ptr %14, align 1, !tbaa !11
  %16 = zext i8 %15 to i32
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str.26, i32 noundef %16)
  br label %18

18:                                               ; preds = %9
  %19 = load i32, ptr %3, align 4, !tbaa !9
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %3, align 4, !tbaa !9
  br label %5, !llvm.loop !12

21:                                               ; preds = %8
  %22 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  ret void
}

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

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

attributes #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 = { 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 = { 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 = !{!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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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"

@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.25 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.26 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: nofree nounwind uwtable
define dso_local void @printEI_PAD(ptr nocapture noundef readonly %0) local_unnamed_addr #1 {
  %2 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.25)
  %3 = getelementptr inbounds i8, ptr %0, i64 9
  %4 = load i8, ptr %3, align 1, !tbaa !5
  %5 = zext i8 %4 to i32
  %6 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.26, i32 noundef %5)
  %7 = getelementptr inbounds i8, ptr %0, i64 10
  %8 = load i8, ptr %7, align 1, !tbaa !5
  %9 = zext i8 %8 to i32
  %10 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.26, i32 noundef %9)
  %11 = getelementptr inbounds i8, ptr %0, i64 11
  %12 = load i8, ptr %11, align 1, !tbaa !5
  %13 = zext i8 %12 to i32
  %14 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.26, i32 noundef %13)
  %15 = getelementptr inbounds i8, ptr %0, i64 12
  %16 = load i8, ptr %15, align 1, !tbaa !5
  %17 = zext i8 %16 to i32
  %18 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.26, i32 noundef %17)
  %19 = getelementptr inbounds i8, ptr %0, i64 13
  %20 = load i8, ptr %19, align 1, !tbaa !5
  %21 = zext i8 %20 to i32
  %22 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.26, i32 noundef %21)
  %23 = getelementptr inbounds i8, ptr %0, i64 14
  %24 = load i8, ptr %23, align 1, !tbaa !5
  %25 = zext i8 %24 to i32
  %26 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.26, i32 noundef %25)
  %27 = getelementptr inbounds i8, ptr %0, i64 15
  %28 = load i8, ptr %27, align 1, !tbaa !5
  %29 = zext i8 %28 to i32
  %30 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.26, i32 noundef %29)
  %31 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  ret void
}

attributes #0 = { 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 #1 = { nofree 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


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