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indirect-branch-cs-prefix

The tracking issue for this feature is: https://github.com/rust-lang/rust/issues/116852.

Option -Zindirect-branch-cs-prefix controls whether a cs prefix is added to call and jmp to indirect thunks.

It is equivalent to Clang's and GCC's -mindirect-branch-cs-prefix. The Linux kernel uses it for RETPOLINE builds. For details, see LLVM commit 6f867f910283 ("[X86] Support -mindirect-branch-cs-prefix for call and jmp to indirect thunk") which introduces the feature.

Only x86 and x86_64 are supported.