jan-wassenberg added a comment.

Is there a way to detect whether the compiler already includes this change, 
preferably via preprocessor?
I tried `#ifdef __RISCV_VXRM_RDN` and `#if __has_builtin(__RISCV_VXRM_RDN)`.

This is a breaking change for us. Updating code to the new required signature 
fails to compile on the older toolchain (which is still in use). Leaving the 
code in the old style (no extra VXRM argument) is also not an option because 
other users have already updated their LLVM.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D152879/new/

https://reviews.llvm.org/D152879

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