Have you gotten any reports of problems with this patch? It seems to be sending cc1 into an infinite loop during the GCC testsuite for me. I am testing the mips-mti-linux-gnu target and tests like gcc.target/mips/call-saved-1.c are causing cc1 to suck up all my memory and swap space before the test times out.
No, I have not.
I will keep digging and see if I can figure out what is going on but I wanted to see if anyone else has reported this problem.
Feel free to open a PR and CC me on it. Thanks.