; LLVM IR from korzhimanov/vlasov-solver :: src/mymath.ll (ZN6mymath3sumEPdii)

; 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 nounwind uwtable
define dso_local noundef double @_ZN6mymath3sumEPdii(ptr noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca double, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = load double, ptr %10, align 8, !tbaa !11
  store double %11, ptr %7, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds double, ptr %12, i64 1
  store ptr %13, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = load i32, ptr %5, align 4, !tbaa !9
  %16 = load i32, ptr %6, align 4, !tbaa !9
  %17 = mul nsw i32 %15, %16
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds double, ptr %14, i64 %18
  store ptr %19, ptr %9, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %29, %3
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  %22 = load ptr, ptr %9, align 8, !tbaa !5
  %23 = icmp ult ptr %21, %22
  br i1 %23, label %24, label %34

24:                                               ; preds = %20
  %25 = load ptr, ptr %8, align 8, !tbaa !5
  %26 = load double, ptr %25, align 8, !tbaa !11
  %27 = load double, ptr %7, align 8, !tbaa !11
  %28 = fadd double %27, %26
  store double %28, ptr %7, align 8, !tbaa !11
  br label %29

29:                                               ; preds = %24
  %30 = load i32, ptr %6, align 4, !tbaa !9
  %31 = load ptr, ptr %8, align 8, !tbaa !5
  %32 = sext i32 %30 to i64
  %33 = getelementptr inbounds double, ptr %31, i64 %32
  store ptr %33, ptr %8, align 8, !tbaa !5
  br label %20, !llvm.loop !13

34:                                               ; preds = %20
  %35 = load double, ptr %7, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  ret double %35
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 }

!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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !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: mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local noundef double @_ZN6mymath3sumEPdii(ptr noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = load double, ptr %0, align 8, !tbaa !5
  %5 = mul nsw i32 %2, %1
  %6 = sext i32 %5 to i64
  %.idx = shl nsw i64 %6, 3
  %7 = getelementptr inbounds i8, ptr %0, i64 %.idx
  %8 = icmp sgt i32 %5, 1
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3
  %9 = getelementptr inbounds i8, ptr %0, i64 8
  %10 = sext i32 %2 to i64
  br label %11

11:                                               ; preds = %.lr.ph, %11
  %.013 = phi double [ %4, %.lr.ph ], [ %13, %11 ]
  %.01112 = phi ptr [ %9, %.lr.ph ], [ %14, %11 ]
  %12 = load double, ptr %.01112, align 8, !tbaa !5
  %13 = fadd double %.013, %12
  %14 = getelementptr inbounds double, ptr %.01112, i64 %10
  %15 = icmp ult ptr %14, %7
  br i1 %15, label %11, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %11, %3
  %.0.lcssa = phi double [ %4, %3 ], [ %13, %11 ]
  ret double %.0.lcssa
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) 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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass