; LLVM IR from PetarV-/Algorithms :: Dynamic Programming (Matrix Chain Multiplication)

; 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"

@n = external dso_local global i32, align 4
@p = external dso_local global [305 x i32], align 16
@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  store i32 6, ptr @n, align 4, !tbaa !5
  store i32 30, ptr @p, align 16, !tbaa !5
  store i32 35, ptr getelementptr inbounds ([305 x i32], ptr @p, i64 0, i64 1), align 4, !tbaa !5
  store i32 15, ptr getelementptr inbounds ([305 x i32], ptr @p, i64 0, i64 2), align 8, !tbaa !5
  store i32 5, ptr getelementptr inbounds ([305 x i32], ptr @p, i64 0, i64 3), align 4, !tbaa !5
  store i32 10, ptr getelementptr inbounds ([305 x i32], ptr @p, i64 0, i64 4), align 16, !tbaa !5
  store i32 20, ptr getelementptr inbounds ([305 x i32], ptr @p, i64 0, i64 5), align 4, !tbaa !5
  store i32 25, ptr getelementptr inbounds ([305 x i32], ptr @p, i64 0, i64 6), align 8, !tbaa !5
  %2 = call noundef i32 @_Z25MatrixChainMultiplicationii(i32 noundef 1, i32 noundef 6)
  %3 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %2)
  ret i32 0
}

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_Z25MatrixChainMultiplicationii(i32 noundef, i32 noundef) #2

attributes #0 = { mustprogress norecurse 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 = { "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 = { inlinehint 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" }

!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"}


; 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"

@n = external dso_local local_unnamed_addr global i32, align 4
@p = external dso_local local_unnamed_addr global [305 x i32], align 16
@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  store i32 6, ptr @n, align 4, !tbaa !5
  store <4 x i32> <i32 30, i32 35, i32 15, i32 5>, ptr @p, align 16, !tbaa !5
  store i32 10, ptr getelementptr inbounds (i8, ptr @p, i64 16), align 16, !tbaa !5
  store i32 20, ptr getelementptr inbounds (i8, ptr @p, i64 20), align 4, !tbaa !5
  store i32 25, ptr getelementptr inbounds (i8, ptr @p, i64 24), align 8, !tbaa !5
  %1 = tail call noundef i32 @_Z25MatrixChainMultiplicationii(i32 noundef 1, i32 noundef 6)
  %2 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %1)
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_Z25MatrixChainMultiplicationii(i32 noundef, i32 noundef) local_unnamed_addr #2

attributes #0 = { mustprogress norecurse 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 = { 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 #2 = { inlinehint 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" }

!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"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SLPVectorizerPass,SROAPass,TailCallElimPass