[Bug rtl-optimization/66845] one more %si register function clobbering issue

[marcus at jet dot franken.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66845

--- Comment #1 from marcus at jet dot franken.de ---
Created attachment 35952
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35952&action=edit
testcase.c

delta minimized testcase.

gcc -c -O2 -fPIC

look for second call of RPCRT4_strndupA where %esi is no longer live, but used