[PATCH] D142834: [X86][MC][bugfix] Report error for mismatched modifier in inline asm and remove function getX86SubSuperRegisterOrZero

[Kan Shengchen via Phabricator via llvm-commits]

skan added a comment.

@craig.topper I keep the `llvm_unreachable` by using a pre-check in X86ISelLowering.cpp. It's the only place I found the `getX86SubSuperRegister` is called with illeagl size.


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  https://reviews.llvm.org/D142834/new/

https://reviews.llvm.org/D142834