================
@@ -488,6 +508,12 @@ bool RegisterInfoPOSIX_arm64::IsSMERegZA(unsigned reg)
const {
return reg == m_sme_regnum_collection[2];
}
+bool RegisterInfoPOSIX_arm64::IsSMERegZT(unsigned reg) const {
+ // ZT0 is part of the SME register set only if SME2 is present.
+ return m_sme_regnum_collection.size() == 4 &&
+ reg == m_sme_regnum_collection.back();
----------------
jasonmolenda wrote:
Do you think it might be better to check if the register number is contained in
`m_sme_rengum_collection` instead of expecting there to be 4 registers and this
is the last one? It seems like this is could be a bug when we get another
register in the next SME update in the future.
https://github.com/llvm/llvm-project/pull/70205
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