skan added a comment.

In D70157#1745125 <https://reviews.llvm.org/D70157#1745125>, @craig.topper 
wrote:

> I've definitely passed something like 
> -Wl,--plugin-opt=-debug-only=isel,dagcombine on the command line before.


I don't know how you could pass it succcessfully.  It doesn't work for me 
either.  Here is the complain:

  clang --gcc-toolchain=xxxxxx -fuse-ld=gold       -march=skylake-avx512 
-mfpmath=sse -Ofast -funroll-loops -flto       
-Wl,-plugin-opt=-debug-only=isel,dagcombine         xxx.o main.o             
-lm         -o xxx
  /usr/bin/ld.gold: error: cannot open dagcombine: No such file or directory


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D70157/new/

https://reviews.llvm.org/D70157



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