I'm taking advantage of CRIS being a lesser important target and as
such not subject to the constraints of GCC being in stage 4.
I'm applying this set of CRIS-specific changes that don't have much
expected effect on generated code.
1: cris: Don't default to -mmul-bug-workaround
Avoid the workaround having a sort-of pseudorandom effect
on observability of code-quality changes.
2: cris: For expanded movsi, don't match operands we know will be
reloaded
A random improvement noticed while looking at the performance impact
of the other changes, helping reload to behave better.
3: cris: Remove CRIS v32 ACR artefacts
The bigger cleanup; tightening up register classes. A left-over from
r11-220 / d0780379c1b6. Unfortunately on its own has a negative
effect on performance, when applied in this order. Don't apply
without the other patches in this set unless you're actually
interested in seeing the fallout.
4: cris: Don't discriminate against ALL_REGS in TARGET_REGISTER_MOVE_COST
A workaround for a problem from before IRA, one that didn't fit well
with the register class cleanup.
5: cris: Reload using special-regs before general-regs
Fixing a flaw exposed by the register class cleanup.
gcc/config/cris/constraints.md | 7 +++++-
gcc/config/cris/cris.cc | 36 +++++++++++++-------------
gcc/config/cris/cris.h | 46 ++++++++++++++++------------------
gcc/config/cris/cris.md | 33 +++++++++++++++++-------
gcc/doc/invoke.texi | 2 +-
5 files changed, 70 insertions(+), 54 deletions(-)
--
2.30.2
brgds, H-P
