Update CodeGen regression tests with marker at first line telling it's
auto-generated by the script, under PowerPC directory. For some reason,
these tests are generated but manually written, which makes things
unclear when someone's change affecting them.
However, some tests only show simple change after re-generated, like
extra blank lines, disappearing '.localentry', etc. Besides, some tests
are generated but added checks for debug output. This commit doesn't try
updating them.
It looks like in some circumstances when compiling with `-mcpu=pwr9` we create an EXTSWSLI node when which causes llc to fail. No such error occurs in pwr8 or lower.
This occurs in 32BIT AIX and BE Linux. the cause seems to be that the default return in combineSHL is to create an EXTSWSLI node. Adding a check for whether we are in PPC64 before that fixes the issue.
Reviewed By: #powerpc, nemanjai
Differential Revision: https://reviews.llvm.org/D87046
Qiu Chaofan