Hi all,

This patch fixes issues reported in 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81535

I removed call to g in pr79439.c because gcc was duplicating the basic 
block with call depending on compiler flags (so scan-assembler-times 
pattern wasn't reliable anymore).  I also added alias to prevent 
inlining introduced by recent PR56727 patch.

I added Power-specific pattern in pr56727-2.c testcase and disabled 
testing on Power in pr56727-1.c.

Tested on powerpc64-unknown-linux-gnu.  Ok for trunk?

-Y