One more patch for PR91333

[Vladimir Makarov]

   The previous patch for

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91333

resulted in aarch64 testsuite failures.

The following patch solves some of the failures and modified the PR test 
as the generated code changed.

The patch was successfully bootstrapped on x86-64 and benchmarked on 
SPEC2000.


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