[llvm] [MIRParser] Allow undef subreg defs in SSA form (PR #189025)

Jay Foad via llvm-commits llvm-commits at lists.llvm.org
Mon Mar 30 08:14:48 PDT 2026

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jayfoad wrote:

> I'm happy to change X86 GlobalISel and ban all subreg defs in SSA, if that's the consensus.

#189403 for the MachineVerifier part.

https://github.com/llvm/llvm-project/pull/189025

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