H.J. Lu 75a933f399 ld/elf/x86: Don't compare IFUNC address in the shared object
On x86, glibc 2.33 starts to issue a fatal error message when calling
IFUNC function defined in the unrelocated executable from a shared
library.

1. Update x86 ELF linker to always convert IFUNC function defined in
position-dependent executable (PDE) to the normal function.  GOT in PDE
will be updated by R_*_IRELATIVE at run-time.
2. Update PR ld/23169 tests not to compare function address of external
IFUNC function in the shared object to avoid calling the IFUNC function
defined in the unrelocated executable.
3. Remove pr23169e tests which call the IFUNC function defined in the
unrelocated position-independent executable from a shared library.

bfd/

	PR ld/23169
	* elfxx-x86.c (_bfd_x86_elf_link_fixup_ifunc_symbol): Don't
	check pointer_equality_needed.

ld/

	PR ld/23169
	* testsuite/ld-ifunc/ifunc.exp: Replace pr23169c.rd with
	pr23169a.rd for pr23169c and pr23169f.  Remove pr23169e tests.
	* testsuite/ld-ifunc/pr23169a.c (foo): Don't compare function
	address.
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
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If you have more than one compiler on your system, it is often best to
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	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

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