[Bug target/20020] x86_64 - 128 bit structs not targeted to TImode

[gary at intrepid dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20020

--- Comment #19 from Gary Funck <gary at intrepid dot com> 2012-08-12 18:30:25 UTC ---
(In reply to comment #15)
> Do we have a run-time testcase?

I attached three compile-time test cases that check if the generated RTL refers
to TImode values.  The test cases are set up to only run on x86_64 and x86
targets. I confirmed that they work as expected on an x86_64 target (with and
without the MAX_FIXED_MODE_SIZE patch).  Not sure if it will work on x86 or
not.  The test case may have to be tweaked for x86.

Is this sufficient?  I don't know how a run-time test would demonstrate the use
of TImode, except in the form of a benchmark.