tcg-ia64: Optimize small arguments to exit_tb

Saves one bundle for the common case of exit_tb 0.

Signed-off-by: Richard Henderson <rth@twiddle.net>
tcg-ia64: Re-bundle the tlb load

This sequencing requires 5 stop bits instead of 6, and has room left
over to pre-load the tlb addend, and bswap data prior to being stored.

Signed-off-by: Richard Henderson <rth@twiddle.net>
tcg-ia64: Move bswap for store into tlb load

Saving at least two cycles per store, and cleaning up the code.

Signed-off-by: Richard Henderson <rth@twiddle.net>
tcg-ia64: Move tlb addend load into tlb read

Signed-off-by: Richard Henderson <rth@twiddle.net>
tcg-ia64: Reduce code duplication in tcg_out_qemu_ld

The only differences were in the bswap insns emitted.

Signed-off-by: Richard Henderson <rth@twiddle.net>
tcg-ia64: Convert to new ldst helpers

Still inline, but updated to the new routines.  Always use the LE
helpers, reusing the bswap between the fast and slot paths.

Signed-off-by: Richard Henderson <rth@twiddle.net>
tcg-ia64: Move part of softmmu slow path out of line

Signed-off-by: Richard Henderson <rth@twiddle.net>
tcg-ia64: Convert to new ldst opcodes

Signed-off-by: Richard Henderson <rth@twiddle.net>