| commit | f648d7a85f394ee3055f19eb419b9c2df1d02a04 | |
| author | Mark Williams <mwilliams@fb.com> | |
| Tue, 14 May 2019 17:20:12 +0000 (14 10:20 -0700) | ||
| committer | Hhvm Bot <hhvm-bot@users.noreply.github.com> | |
| Tue, 14 May 2019 17:37:00 +0000 (14 10:37 -0700) | ||
| tree | d7ee3beb3ed428a16bf414719342c5164d2b75a0 | treesnapshot (tar.gz zip) |
| parent | da9949dde96c0a35d37becf9ed2ecd3af2d48116 | commitdiff |
Add mode to EndCatch
Summary:
Differentiate catch traces that might be used for VMSwitchMode,
VMBuiltinSwitchMode, or special case handling via side exit.
For "normal" catch traces, values being spilt to the stack are only
there for the unwinder to pop them. Other kinds of catch traces might
actually consume the stack slots, so in order to optimize away such
stores, we need to know the kind of catch trace we're dealing with.
This diff doesn't really use the mode. I'll add optimizations in later
diffs.
Reviewed By: paulbiss
Differential Revision: D15296707
fbshipit-source-id: 5d8a68065aa7549755c9ee2bd47e3910fae1750f
Summary:
Differentiate catch traces that might be used for VMSwitchMode,
VMBuiltinSwitchMode, or special case handling via side exit.
For "normal" catch traces, values being spilt to the stack are only
there for the unwinder to pop them. Other kinds of catch traces might
actually consume the stack slots, so in order to optimize away such
stores, we need to know the kind of catch trace we're dealing with.
This diff doesn't really use the mode. I'll add optimizations in later
diffs.
Reviewed By: paulbiss
Differential Revision: D15296707
fbshipit-source-id: 5d8a68065aa7549755c9ee2bd47e3910fae1750f