[win][arm64ec] Add /machine:arm64ec when linking LLVM as Arm64EC
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rustbot has assigned @albertlarsan68. Use |
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This PR changes how LLVM is built. Consider updating src/bootstrap/download-ci-llvm-stamp. |
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When the MSVC linker sees an Arm64EC object file, it needs to know if it's linking the final executable as Arm64EC or Arm64X.
This change adds the
/machine:arm64ecflag to the linker when building LLVM as Arm64EC to avoid that ambiguity (and resulting linker error).