[Lldb-commits] [lldb] [lldb][Windows] Cache thread context in NativeRegisterContextWindows_arm64 (PR #197385)

[David Spickett via lldb-commits]

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@@ -267,11 +297,15 @@ Status NativeRegisterContextWindows_arm64::GPRRead(const uint32_t reg,
 Status
 NativeRegisterContextWindows_arm64::GPRWrite(const uint32_t reg,
                                              const RegisterValue &reg_value) {
-  ::CONTEXT tls_context;
-  DWORD context_flag = CONTEXT_CONTROL | CONTEXT_INTEGER;
+  auto cleanup = llvm::make_scope_exit([&]() { m_context = nullptr; });
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DavidSpickett wrote:

Yes that sounds good. It will avoid an allocation in most cases, but reallocate if for example SVE resized since last time.

https://github.com/llvm/llvm-project/pull/197385