; LLVM IR from lolosssss/leetcode :: c (1_two_sum)

; 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"

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

; 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
declare void @free(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @twoSum(ptr noundef, i32 noundef, i32 noundef) #2

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

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #2 {
  %1 = alloca i32, align 4
  %2 = alloca [100 x i32], align 16
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 400, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 155, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %6

6:                                                ; preds = %16, %0
  %7 = load i32, ptr %5, align 4, !tbaa !5
  %8 = icmp slt i32 %7, 100
  br i1 %8, label %10, label %9

9:                                                ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  br label %19

10:                                               ; preds = %6
  %11 = load i32, ptr %5, align 4, !tbaa !5
  %12 = add nsw i32 %11, 1
  %13 = load i32, ptr %5, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [100 x i32], ptr %2, i64 0, i64 %14
  store i32 %12, ptr %15, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %10
  %17 = load i32, ptr %5, align 4, !tbaa !5
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %5, align 4, !tbaa !5
  br label %6, !llvm.loop !9

19:                                               ; preds = %9
  %20 = getelementptr inbounds [100 x i32], ptr %2, i64 0, i64 0
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = call ptr @twoSum(ptr noundef %20, i32 noundef 100, i32 noundef %21)
  store ptr %22, ptr %4, align 8, !tbaa !11
  %23 = load ptr, ptr %4, align 8, !tbaa !11
  %24 = load i32, ptr %23, align 4, !tbaa !5
  %25 = load ptr, ptr %4, align 8, !tbaa !11
  %26 = getelementptr inbounds i32, ptr %25, i64 1
  %27 = load i32, ptr %26, align 4, !tbaa !5
  %28 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %24, i32 noundef %27)
  %29 = load ptr, ptr %4, align 8, !tbaa !11
  call void @free(ptr noundef %29) #4
  store ptr null, ptr %4, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 400, ptr %2) #4
  ret i32 0
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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 = { 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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !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"

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

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @twoSum(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #2

; 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 #2 {
vector.ph:
  %0 = alloca [100 x i32], align 16
  call void @llvm.lifetime.start.p0(i64 400, ptr nonnull %0) #4
  %1 = getelementptr inbounds i8, ptr %0, i64 16
  store <4 x i32> <i32 1, i32 2, i32 3, i32 4>, ptr %0, align 16, !tbaa !5
  store <4 x i32> <i32 5, i32 6, i32 7, i32 8>, ptr %1, align 16, !tbaa !5
  %2 = getelementptr inbounds i8, ptr %0, i64 32
  %3 = getelementptr inbounds i8, ptr %0, i64 48
  store <4 x i32> <i32 9, i32 10, i32 11, i32 12>, ptr %2, align 16, !tbaa !5
  store <4 x i32> <i32 13, i32 14, i32 15, i32 16>, ptr %3, align 16, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 64
  %5 = getelementptr inbounds i8, ptr %0, i64 80
  store <4 x i32> <i32 17, i32 18, i32 19, i32 20>, ptr %4, align 16, !tbaa !5
  store <4 x i32> <i32 21, i32 22, i32 23, i32 24>, ptr %5, align 16, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 96
  %7 = getelementptr inbounds i8, ptr %0, i64 112
  store <4 x i32> <i32 25, i32 26, i32 27, i32 28>, ptr %6, align 16, !tbaa !5
  store <4 x i32> <i32 29, i32 30, i32 31, i32 32>, ptr %7, align 16, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %0, i64 128
  %9 = getelementptr inbounds i8, ptr %0, i64 144
  store <4 x i32> <i32 33, i32 34, i32 35, i32 36>, ptr %8, align 16, !tbaa !5
  store <4 x i32> <i32 37, i32 38, i32 39, i32 40>, ptr %9, align 16, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %0, i64 160
  %11 = getelementptr inbounds i8, ptr %0, i64 176
  store <4 x i32> <i32 41, i32 42, i32 43, i32 44>, ptr %10, align 16, !tbaa !5
  store <4 x i32> <i32 45, i32 46, i32 47, i32 48>, ptr %11, align 16, !tbaa !5
  %12 = getelementptr inbounds i8, ptr %0, i64 192
  %13 = getelementptr inbounds i8, ptr %0, i64 208
  store <4 x i32> <i32 49, i32 50, i32 51, i32 52>, ptr %12, align 16, !tbaa !5
  store <4 x i32> <i32 53, i32 54, i32 55, i32 56>, ptr %13, align 16, !tbaa !5
  %14 = getelementptr inbounds i8, ptr %0, i64 224
  %15 = getelementptr inbounds i8, ptr %0, i64 240
  store <4 x i32> <i32 57, i32 58, i32 59, i32 60>, ptr %14, align 16, !tbaa !5
  store <4 x i32> <i32 61, i32 62, i32 63, i32 64>, ptr %15, align 16, !tbaa !5
  %16 = getelementptr inbounds i8, ptr %0, i64 256
  %17 = getelementptr inbounds i8, ptr %0, i64 272
  store <4 x i32> <i32 65, i32 66, i32 67, i32 68>, ptr %16, align 16, !tbaa !5
  store <4 x i32> <i32 69, i32 70, i32 71, i32 72>, ptr %17, align 16, !tbaa !5
  %18 = getelementptr inbounds i8, ptr %0, i64 288
  %19 = getelementptr inbounds i8, ptr %0, i64 304
  store <4 x i32> <i32 73, i32 74, i32 75, i32 76>, ptr %18, align 16, !tbaa !5
  store <4 x i32> <i32 77, i32 78, i32 79, i32 80>, ptr %19, align 16, !tbaa !5
  %20 = getelementptr inbounds i8, ptr %0, i64 320
  %21 = getelementptr inbounds i8, ptr %0, i64 336
  store <4 x i32> <i32 81, i32 82, i32 83, i32 84>, ptr %20, align 16, !tbaa !5
  store <4 x i32> <i32 85, i32 86, i32 87, i32 88>, ptr %21, align 16, !tbaa !5
  %22 = getelementptr inbounds i8, ptr %0, i64 352
  %23 = getelementptr inbounds i8, ptr %0, i64 368
  store <4 x i32> <i32 89, i32 90, i32 91, i32 92>, ptr %22, align 16, !tbaa !5
  store <4 x i32> <i32 93, i32 94, i32 95, i32 96>, ptr %23, align 16, !tbaa !5
  %24 = getelementptr inbounds i8, ptr %0, i64 384
  store i32 97, ptr %24, align 16, !tbaa !5
  %25 = getelementptr inbounds i8, ptr %0, i64 388
  store i32 98, ptr %25, align 4, !tbaa !5
  %26 = getelementptr inbounds i8, ptr %0, i64 392
  store i32 99, ptr %26, align 8, !tbaa !5
  %27 = getelementptr inbounds i8, ptr %0, i64 396
  store i32 100, ptr %27, align 4, !tbaa !5
  %28 = call ptr @twoSum(ptr noundef nonnull %0, i32 noundef 100, i32 noundef 155)
  %29 = load i32, ptr %28, align 4, !tbaa !5
  %30 = getelementptr inbounds i8, ptr %28, i64 4
  %31 = load i32, ptr %30, align 4, !tbaa !5
  %32 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %29, i32 noundef %31)
  call void @free(ptr noundef %28) #4
  call void @llvm.lifetime.end.p0(i64 400, ptr nonnull %0) #4
  ret i32 0
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 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 #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 = { 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/C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,LoopLoadEliminationPass,LoopRotatePass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass