[PATCH] D62877: [WebAssembly] Implement tail calls and unify tablegen call classes

[Thomas Lively via Phabricator via llvm-commits]

tlively marked an inline comment as done.
tlively added inline comments.


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Comment at: llvm/docs/CodeGenerator.rst:2107
 
+On WebAssembly, tail calls are lowered to ``return_call`` and
+``return_call_indirect`` instructions whenever the 'tail-call' target attribute
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dschuff wrote:
> Shouldn't we have the same restrictions on PIC code?
> Also, while it seems like va_arg and byval should work, if we're going to promise to optimize those too, we should have some tests.
I'm not totally clear on the details of our PIC code, but any direct or indirect call could be lowered to a tail call, so I'm not sure why there should be a restriction.

I'll add tests for byval, varargs, etc.


Repository:
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  https://reviews.llvm.org/D62877/new/

https://reviews.llvm.org/D62877