Implement the MVE LETP insn. This is like the existing LE loop-end
insn, but it must perform an FPU-enabled check, and on loop-exit it
resets LTPSIZE to 4.
To accommodate the requirement to do something on loop-exit, we drop
the use of condlabel and instead manage both the TB exits manually,
in the same way we already do in trans_WLS().
The other MVE-specific change to the LE insn is that we must raise an
INVSTATE UsageFault insn if LTPSIZE is not 4.
Signed-off-by: Peter Maydell<peter.maydell@linaro.org>
---
This amounts to a complete rewrite of trans_LE()...
---
target/arm/t32.decode | 2 +-
target/arm/translate.c | 104 +++++++++++++++++++++++++++++++++++++----
2 files changed, 97 insertions(+), 9 deletions(-)