; LLVM IR from upupming/algorithm :: kick-start/2021/RoundA/B. L Shaped Plots.ll (Z5solvev)

; 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"

; 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: mustprogress uwtable
declare dso_local noundef i64 @_Z4calci(i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z5solvev() #1 {
  %1 = alloca i64, align 8
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #2
  store i64 0, ptr %1, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #2
  store i32 0, ptr %2, align 4, !tbaa !9
  br label %3

3:                                                ; preds = %12, %0
  %4 = load i32, ptr %2, align 4, !tbaa !9
  %5 = icmp slt i32 %4, 8
  br i1 %5, label %7, label %6

6:                                                ; preds = %3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #2
  br label %15

7:                                                ; preds = %3
  %8 = load i32, ptr %2, align 4, !tbaa !9
  %9 = call noundef i64 @_Z4calci(i32 noundef %8)
  %10 = load i64, ptr %1, align 8, !tbaa !5
  %11 = add nsw i64 %10, %9
  store i64 %11, ptr %1, align 8, !tbaa !5
  br label %12

12:                                               ; preds = %7
  %13 = load i32, ptr %2, align 4, !tbaa !9
  %14 = add nsw i32 %13, 1
  store i32 %14, ptr %2, align 4, !tbaa !9
  br label %3, !llvm.loop !11

15:                                               ; preds = %6
  %16 = load i64, ptr %1, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #2
  ret i64 %16
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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" }
attributes #2 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple 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"

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z4calci(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z5solvev() local_unnamed_addr #0 {
  %1 = tail call noundef i64 @_Z4calci(i32 noundef 0)
  %2 = tail call noundef i64 @_Z4calci(i32 noundef 1)
  %3 = add nsw i64 %2, %1
  %4 = tail call noundef i64 @_Z4calci(i32 noundef 2)
  %5 = add nsw i64 %4, %3
  %6 = tail call noundef i64 @_Z4calci(i32 noundef 3)
  %7 = add nsw i64 %6, %5
  %8 = tail call noundef i64 @_Z4calci(i32 noundef 4)
  %9 = add nsw i64 %8, %7
  %10 = tail call noundef i64 @_Z4calci(i32 noundef 5)
  %11 = add nsw i64 %10, %9
  %12 = tail call noundef i64 @_Z4calci(i32 noundef 6)
  %13 = add nsw i64 %12, %11
  %14 = tail call noundef i64 @_Z4calci(i32 noundef 7)
  %15 = add nsw i64 %14, %13
  ret i64 %15
}

attributes #0 = { 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)"}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopRotatePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass