Heejin Ahn 5c92f2331c [WebAssembly] Fix MIR printing of reference types (#113028) ...

When printing a memory operand in MIR, this line

d37bc32a65/llvm/lib/CodeGen/MachineOperand.cpp (L1247)
calls this
d37bc32a65/llvm/include/llvm/Support/Alignment.h (L238)
which assumes `Rhs` (the size in this case) is positive.

But Wasm reference types' size is set to 0:
d37bc32a65/llvm/include/llvm/CodeGen/ValueTypes.td (L326-L328)

`getSize() > 0` condition was added with the Wasm reference types
support in
46667a1003,
and it looks it was removed in #84751. This revives the condition so
that Wasm reference types will not crash the MIR printer.

2024-10-22 13:48:00 -07:00

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