; LLVM IR from CactiLab/Sherloc-Cortex-M-CFVD :: Sherloc_runtime/evaluation/src/st (libst)

; 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: nounwind uwtable
define dso_local void @Calc_Var_Stddev(ptr noundef %0, double noundef %1, ptr noundef %2, ptr noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca double, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca double, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store double %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  store ptr %3, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  store double 0.000000e+00, ptr %10, align 8, !tbaa !9
  store i32 0, ptr %9, align 4, !tbaa !11
  br label %11

11:                                               ; preds = %25, %4
  %12 = load i32, ptr %9, align 4, !tbaa !11
  %13 = icmp slt i32 %12, 100
  br i1 %13, label %14, label %28

14:                                               ; preds = %11
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = load i32, ptr %9, align 4, !tbaa !11
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds double, ptr %15, i64 %17
  %19 = load double, ptr %18, align 8, !tbaa !9
  %20 = load double, ptr %6, align 8, !tbaa !9
  %21 = fsub double %19, %20
  %22 = call double @Square(double noundef %21)
  %23 = load double, ptr %10, align 8, !tbaa !9
  %24 = fadd double %23, %22
  store double %24, ptr %10, align 8, !tbaa !9
  br label %25

25:                                               ; preds = %14
  %26 = load i32, ptr %9, align 4, !tbaa !11
  %27 = add nsw i32 %26, 1
  store i32 %27, ptr %9, align 4, !tbaa !11
  br label %11, !llvm.loop !13

28:                                               ; preds = %11
  %29 = load double, ptr %10, align 8, !tbaa !9
  %30 = fdiv double %29, 1.000000e+02
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  store double %30, ptr %31, align 8, !tbaa !9
  %32 = load ptr, ptr %7, align 8, !tbaa !5
  %33 = load double, ptr %32, align 8, !tbaa !9
  %34 = call double @sqrt(double noundef %33) #3
  %35 = load ptr, ptr %8, align 8, !tbaa !5
  store double %34, ptr %35, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  ret void
}

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

; Function Attrs: nounwind uwtable
declare dso_local double @Square(double noundef) #1

; Function Attrs: nounwind
declare double @sqrt(double noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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: nounwind uwtable
define dso_local void @Calc_Var_Stddev(ptr nocapture noundef readonly %0, double noundef %1, ptr nocapture noundef writeonly %2, ptr nocapture noundef writeonly %3) local_unnamed_addr #0 {
  br label %5

5:                                                ; preds = %4, %5
  %indvars.iv = phi i64 [ 0, %4 ], [ %indvars.iv.next, %5 ]
  %.011 = phi double [ 0.000000e+00, %4 ], [ %10, %5 ]
  %6 = getelementptr inbounds double, ptr %0, i64 %indvars.iv
  %7 = load double, ptr %6, align 8, !tbaa !5
  %8 = fsub double %7, %1
  %9 = tail call double @Square(double noundef %8)
  %10 = fadd double %.011, %9
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, 100
  br i1 %exitcond.not, label %11, label %5, !llvm.loop !9

11:                                               ; preds = %5
  %12 = fdiv double %10, 1.000000e+02
  store double %12, ptr %2, align 8, !tbaa !5
  %13 = tail call double @sqrt(double noundef %12) #2
  store double %13, ptr %3, align 8, !tbaa !5
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local double @Square(double noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind willreturn memory(write)
declare double @sqrt(double noundef) local_unnamed_addr #1

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 nofree nounwind willreturn memory(write) "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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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