[llvm-ml] `invalid instruction mnemonic 'assume'`

[Kojoley]

https://github.com/boostorg/context/raw/f5d062c9399b6410cf1f90070bf6716f2ee0ced3/src/asm/jump_i386_ms_pe_masm.asm

> llvm-ml.exe /safeseh jump_i386_ms_pe_masm.asm -DBOOST_CONTEXT_EXPORT=
jump_i386_ms_pe_masm.asm:38:5: error: invalid instruction mnemonic 'assume'
    assume  fs:nothing
    ^~~~~~
jump_i386_ms_pe_masm.asm:41:5: error: invalid instruction mnemonic 'assume'
    assume  fs:error
    ^~~~~~
jump_i386_ms_pe_masm.asm:79:5: error: invalid instruction mnemonic 'assume'
    assume  fs:nothing
    ^~~~~~
jump_i386_ms_pe_masm.asm:82:5: error: invalid instruction mnemonic 'assume'
    assume  fs:error
    ^~~~~~

[momo5502]

I had the same issue. As a workaround setting the BOOST_CONTEXT_IMPLEMENTATION to winfib worked for me.

[llvmbot]

@llvm/issue-subscribers-backend-x86

Author: Nikita Kniazev (Kojoley)

https://github.com/boostorg/context/raw/f5d062c9399b6410cf1f90070bf6716f2ee0ced3/src/asm/jump_i386_ms_pe_masm.asm ``` > llvm-ml.exe /safeseh jump_i386_ms_pe_masm.asm -DBOOST_CONTEXT_EXPORT= jump_i386_ms_pe_masm.asm:38:5: error: invalid instruction mnemonic 'assume' assume fs:nothing ^~~~~~ jump_i386_ms_pe_masm.asm:41:5: error: invalid instruction mnemonic 'assume' assume fs:error ^~~~~~ jump_i386_ms_pe_masm.asm:79:5: error: invalid instruction mnemonic 'assume' assume fs:nothing ^~~~~~ jump_i386_ms_pe_masm.asm:82:5: error: invalid instruction mnemonic 'assume' assume fs:error ^~~~~~ ```