AutoFDO: Don't try to promote indirect calls that result in recursive direct calls

AutoFDO: Don't try to promote indirect calls that result in recursive direct calls

AutoFDO tries to promote and inline all indirect calls that were promoted
and inlined in the original binary and that are still hot. In the included
test case, the promotion results in a direct call that is a recursive call.
inline_call and optimize_inline_calls can't handle recursive calls at this stage.
Currently, inline_call fails with a segmentation fault.

This change leaves the indirect call alone if promotion will result in a recursive call.

Tested on x86_64-pc-linux-gnu.

gcc/ChangeLog:
	* auto-profile.cc (afdo_indirect_call): Don't attempt to promote indirect calls
	that will result in direct recursive calls.

gcc/testsuite/ChangeLog:
	* g++.dg/tree-prof/indir-call-recursive-inlining.C : New test.