Bug 194399 – Fix more doesGC() for CheckTraps, GetMapBucket, and Switch nodes.

• Component: JavaScriptCore
• Status: RESOLVED FIXED

[Mark Lam]

CheckTraps, GetMapBucket, and Switch nodes can GC.

[Radar WebKit Bug Importer]

<rdar://problem/47889777>

[Mark Lam]

Created attachment 361420 [details]
proposed patch.

[Yusuke Suzuki]

Comment on attachment 361420 [details]
proposed patch.

r=me

[Mark Lam]

Thanks for the review.  Landed in r241140: <http://trac.webkit.org/r241140>.

[Michael Catanzaro]

Note GCC doesn't like this:

[1181/3497] Building CXX object Source...sources/UnifiedSource-bfc896e1-6.cpp.o
In file included from DerivedSources/JavaScriptCore/unified-sources/UnifiedSource-bfc896e1-6.cpp:3:
../../Source/JavaScriptCore/dfg/DFGDoesGC.cpp: In function ‘bool JSC::DFG::doesGC(JSC::DFG::Graph&, JSC::DFG::Node*)’:
../../Source/JavaScriptCore/dfg/DFGDoesGC.cpp:464:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
         switch (node->switchData()->kind) {
         ^~~~~~
../../Source/JavaScriptCore/dfg/DFGDoesGC.cpp:479:5: note: here
     case LastNodeType:
     ^~~~

I'll also remove the two unreachable returns while I'm fixing this.

[Michael Catanzaro]

Committed r241314: <https://trac.webkit.org/changeset/241314>