; LLVM IR from ksw2000/Data-Structure-in-C :: Struct (06-函數引用結構體陣列)

; 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.rectangle = type { i32, i32 }

@.str = external hidden unnamed_addr constant [33 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local i32 @sumArea(ptr noundef, i32 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca [3 x %struct.rectangle], align 16
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 24, ptr %2) #3
  %3 = getelementptr inbounds [3 x %struct.rectangle], ptr %2, i64 0, i64 0
  %4 = getelementptr inbounds %struct.rectangle, ptr %3, i32 0, i32 0
  store i32 10, ptr %4, align 16, !tbaa !5
  %5 = getelementptr inbounds [3 x %struct.rectangle], ptr %2, i64 0, i64 0
  %6 = getelementptr inbounds %struct.rectangle, ptr %5, i32 0, i32 1
  store i32 10, ptr %6, align 4, !tbaa !10
  %7 = getelementptr inbounds [3 x %struct.rectangle], ptr %2, i64 0, i64 1
  %8 = getelementptr inbounds %struct.rectangle, ptr %7, i32 0, i32 0
  store i32 5, ptr %8, align 8, !tbaa !5
  %9 = getelementptr inbounds [3 x %struct.rectangle], ptr %2, i64 0, i64 1
  %10 = getelementptr inbounds %struct.rectangle, ptr %9, i32 0, i32 1
  store i32 35, ptr %10, align 4, !tbaa !10
  %11 = getelementptr inbounds [3 x %struct.rectangle], ptr %2, i64 0, i64 2
  %12 = getelementptr inbounds %struct.rectangle, ptr %11, i32 0, i32 0
  store i32 7, ptr %12, align 16, !tbaa !5
  %13 = getelementptr inbounds [3 x %struct.rectangle], ptr %2, i64 0, i64 2
  %14 = getelementptr inbounds %struct.rectangle, ptr %13, i32 0, i32 1
  store i32 18, ptr %14, align 4, !tbaa !10
  %15 = getelementptr inbounds [3 x %struct.rectangle], ptr %2, i64 0, i64 0
  %16 = call i32 @sumArea(ptr noundef %15, i32 noundef 3)
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %16)
  call void @llvm.lifetime.end.p0(i64 24, ptr %2) #3
  ret i32 0
}

declare i32 @printf(ptr noundef, ...) #2

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 = { "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 = { 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, !7, i64 0}
!6 = !{!"rectangle", !7, i64 0, !7, i64 4}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 4}


; 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.rectangle = type { i32, i32 }

@.str = external hidden unnamed_addr constant [33 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local i32 @sumArea(ptr noundef, i32 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca [3 x %struct.rectangle], align 16
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %1) #3
  store <4 x i32> <i32 10, i32 10, i32 5, i32 35>, ptr %1, align 16, !tbaa !5
  %2 = getelementptr inbounds i8, ptr %1, i64 16
  store i32 7, ptr %2, align 16, !tbaa !9
  %3 = getelementptr inbounds i8, ptr %1, i64 20
  store i32 18, ptr %3, align 4, !tbaa !11
  %4 = call i32 @sumArea(ptr noundef nonnull %1, i32 noundef 3)
  %5 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %4)
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %1) #3
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

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 = { 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"rectangle", !6, i64 0, !6, i64 4}
!11 = !{!10, !6, i64 4}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass