Always use portable tailcalling mechanism for delegate tailcalls #70269
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It is rare but possible to have delegates that point to VSD stubs. Since VSD stubs on x86 may disassemble the call-site we cannot allow tail calling these with the old mechanism. Fix dotnet#70259
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Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch Issue DetailsIt is rare but possible to have delegates that point to VSD stubs. Since Fix #70259
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Tailcall through built-in delegates is best-effort. Instantiating stubs may break the chain and on ARM32 so may wrapper delegate stubs. The latter happens for this particular test. Change the test so that it is just verifying we do not hit the assert.
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cc @dotnet/jit-contrib PTAL @EgorBo |
EgorBo
approved these changes
Jun 6, 2022
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It is rare but possible to have delegates that point to VSD stubs. Since
VSD stubs on x86 may disassemble the call-site we cannot allow tail
calling these with the old mechanism.
Fix #70259