do not Copy-Propagate static variables #11238
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Thanks for your pull request, @WalterBright! Bugzilla referencesYour PR doesn't reference any Bugzilla issue. If your PR contains non-trivial changes, please reference a Bugzilla issue or create a manual changelog. Testing this PR locallyIf you don't have a local development environment setup, you can use Digger to test this PR: dub run digger -- build "master + dmd#11238" |
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Please add a bugzilla reference/change log entry |
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@MoonlightSentinel |
UplinkCoder
reviewed
Jun 6, 2020
| @@ -580,6 +580,7 @@ private void aecpgenkill(ref GlobalOptimizer go, int flowxx) | |||
| n.EV.E1.Eoper == OPvar && | |||
| n.EV.E2.Eoper == OPvar && | |||
| !((n.EV.E1.Ety | n.EV.E2.Ety) & (mTYvolatile | mTYshared)) && | |||
| !((n.EV.E1.EV.Vsym.Sflags | n.EV.E2.EV.Vsym.Sflags) & SFLlivexit) && | |||
| n.EV.E1.EV.Vsym != n.EV.E2.EV.Vsym) | |||
| { | |||
| n.Nflags |= NFLaecp; | |||
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so NFLaecp stands for NFlags.AssignExp CopyPropagration?
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That was removed by un-merged PR #11098
Fair enough |
andralex
approved these changes
Jun 15, 2020
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because it prevents caching a static in a local variable that might get enregistered.