; LLVM IR from dartsim/dart :: dart/external/odelcpsolver/matrix.ll (ZN4dart8external3ode10_dSetValueEPdmd)

; 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"

@.str = external hidden unnamed_addr constant [24 x i8], align 1
@__FUNCTION__._ZN4dart8external3ode10_dSetValueEPdmd = external hidden unnamed_addr constant [11 x i8], align 1

declare void @_ZN4dart8external3ode6dDebugEiPKcz(i32 noundef, ptr 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: mustprogress uwtable
define dso_local void @_ZN4dart8external3ode10_dSetValueEPdmd(ptr noundef %0, i64 noundef %1, double noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca double, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  store double %2, ptr %6, align 8, !tbaa !11
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %12, label %11

11:                                               ; preds = %3
  call void (i32, ptr, ...) @_ZN4dart8external3ode6dDebugEiPKcz(i32 noundef 2, ptr noundef @.str, ptr noundef @__FUNCTION__._ZN4dart8external3ode10_dSetValueEPdmd)
  br label %12

12:                                               ; preds = %11, %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %13, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %14 = load i64, ptr %5, align 8, !tbaa !9
  store i64 %14, ptr %8, align 8, !tbaa !9
  br label %15

15:                                               ; preds = %18, %12
  %16 = load i64, ptr %8, align 8, !tbaa !9
  %17 = icmp ugt i64 %16, 0
  br i1 %17, label %18, label %24

18:                                               ; preds = %15
  %19 = load double, ptr %6, align 8, !tbaa !11
  %20 = load ptr, ptr %7, align 8, !tbaa !5
  %21 = getelementptr inbounds double, ptr %20, i32 1
  store ptr %21, ptr %7, align 8, !tbaa !5
  store double %19, ptr %20, align 8, !tbaa !11
  %22 = load i64, ptr %8, align 8, !tbaa !9
  %23 = add i64 %22, -1
  store i64 %23, ptr %8, align 8, !tbaa !9
  br label %15, !llvm.loop !13

24:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret void
}

attributes #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 = { 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 #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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !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"

@.str = external hidden unnamed_addr constant [24 x i8], align 1
@__FUNCTION__._ZN4dart8external3ode10_dSetValueEPdmd = external hidden unnamed_addr constant [11 x i8], align 1

declare void @_ZN4dart8external3ode6dDebugEiPKcz(i32 noundef, ptr noundef, ...) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4dart8external3ode10_dSetValueEPdmd(ptr noundef writeonly %0, i64 noundef %1, double noundef %2) local_unnamed_addr #1 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %4, label %5

4:                                                ; preds = %3
  tail call void (i32, ptr, ...) @_ZN4dart8external3ode6dDebugEiPKcz(i32 noundef 2, ptr noundef nonnull @.str, ptr noundef nonnull @__FUNCTION__._ZN4dart8external3ode10_dSetValueEPdmd)
  br label %5

5:                                                ; preds = %4, %3
  %.not78 = icmp eq i64 %1, 0
  br i1 %.not78, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %5
  %min.iters.check = icmp ult i64 %1, 4
  br i1 %min.iters.check, label %.lr.ph.preheader14, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %1, -4
  %ind.end = and i64 %1, 3
  %6 = shl i64 %n.vec, 3
  %ind.end11 = getelementptr i8, ptr %0, i64 %6
  %broadcast.splatinsert = insertelement <2 x double> poison, double %2, i64 0
  %broadcast.splat = shufflevector <2 x double> %broadcast.splatinsert, <2 x double> poison, <2 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %offset.idx = shl i64 %index, 3
  %next.gep = getelementptr i8, ptr %0, i64 %offset.idx
  %7 = getelementptr i8, ptr %next.gep, i64 16
  store <2 x double> %broadcast.splat, ptr %next.gep, align 8, !tbaa !5
  store <2 x double> %broadcast.splat, ptr %7, align 8, !tbaa !5
  %index.next = add nuw i64 %index, 4
  %8 = icmp eq i64 %index.next, %n.vec
  br i1 %8, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %1
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader14

.lr.ph.preheader14:                               ; preds = %middle.block, %.lr.ph.preheader
  %.010.ph = phi i64 [ %1, %.lr.ph.preheader ], [ %ind.end, %middle.block ]
  %.069.ph = phi ptr [ %0, %.lr.ph.preheader ], [ %ind.end11, %middle.block ]
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader14, %.lr.ph
  %.010 = phi i64 [ %10, %.lr.ph ], [ %.010.ph, %.lr.ph.preheader14 ]
  %.069 = phi ptr [ %9, %.lr.ph ], [ %.069.ph, %.lr.ph.preheader14 ]
  %9 = getelementptr inbounds i8, ptr %.069, i64 8
  store double %2, ptr %.069, align 8, !tbaa !5
  %10 = add i64 %.010, -1
  %.not7 = icmp eq i64 %10, 0
  br i1 %.not7, label %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph, %middle.block, %5
  ret void
}

attributes #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 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, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !12, !11}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass