Christudasan Devadasan 0d849b8249 AMDGPU: Skip folding REG_SEQUENCE if found unknown regclasses for its users ...

Use TII::getRegClass to return a valid regclass or a nullptr
if the RC is unknown for a given OpIdx. This fixes a potential
crash occurred while getting the RC from a variadic instruction.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D120813

2022-03-08 10:11:57 +05:30

63 KiB

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