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[ARM] Don't mark vctp as having sideeffects

Authored by dmgreen on Thu, Jul 16, 2:36 AM.

Description

[ARM] Don't mark vctp as having sideeffects

As far as I can tell, it should not be necessary for VCTP to be
unpredictable in tail predicated loops. Either it has a a valid loop
counter as a operand which will naturally keep it in the right loop, or
it doesn't and it won't be converted to a tail predicated loop. Not
marking it as having side effects allows it to be scheduled more cleanly
for cases where it is not expected to become a tail predicate loop.

Differential Revision: https://reviews.llvm.org/D83907

Details

Committed
dmgreenSun, Jul 19, 1:28 AM
Differential Revision
D83907: [ARM] Don't mark vctp as having sideeffects
Parents
rG2e74b6d80f34: [llvm-cov gcov] Don't require NUL terminator when reading files
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