[Bug testsuite/82120] FAIL: gcc.dg/tree-ssa/pr81588.c

jakub at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Thu Sep 7 14:25:00 GMT 2017


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82120

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Christophe Lyon from comment #7)
> I think it returns 0 in the testcase (optimizing for speed).
> 
> I've noticed that arm_cortex_a5_branch_cost() has the same implementation as
> arm_cortex_m7_branch_cost(), but according to Thomas, the behaviour is
> different, since he sees the test pass for m7.
> 
> Is it possible to write a dynamic gcc query rather than hardcode cpu names
> in logical_op_short_circuit ?

As:
...
         || [istarget visium-*-*]
         || [check_effective_target_arm_cortex_m] } {
shows, you can do there anything you want. Ideally it should be cached.


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