[Lldb-commits] [PATCH] D154926: [lldb][AArch64] Add support for SME's SVE streaming mode registers

David Spickett via Phabricator via lldb-commits lldb-commits at lists.llvm.org
Tue Jul 18 07:33:33 PDT 2023


DavidSpickett marked 3 inline comments as done.
DavidSpickett added inline comments.


================
Comment at: lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp:422
+        m_sve_state = SVEState::Unknown;
+        m_sve_state_data.Invalidate();
+        m_ssve_state_data.Invalidate();
----------------
omjavaid wrote:
> shouldnt we also invalidate all other dynamic regsets here?
This is not needed anymore as we're no longer going to trigger a mode switch here. When we write to FPSIMD, we'll use the bottom 128 bits of the streaming mode Z register. Instead of going back to NT_ARM_SVE, which would cause a mode switch.


================
Comment at: lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.h:116
+
+  SVEStateData m_sve_state_data;
+  SVEStateData m_ssve_state_data;
----------------
omjavaid wrote:
> When we are in streaming mode normal state data will be invalid? If yes then can we convert this into a pointer which should be pointing to a valid state data based on current state?
I've reverted to the previous scheme.


Repository:
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  https://reviews.llvm.org/D154926/new/

https://reviews.llvm.org/D154926



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