[COMMITTED] patch for PR95464

[Vladimir Makarov]

The following patch fixes

            https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95464

The patch was successfully bootstrapped and tested on x86-64.  I did not 
test it on other major targets as they do not deal with STRICT_LOW_PART.

There is also no test case for this PR as it is hard to check the right 
code generation.


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