On 07/15/2015 12:03 PM, Aurelien Jarno wrote:
When ext_i32_i64 and extu_i32_i64 ops are not implemented, this means
that the register is already properly zero/sign extended, so we can
simply replace it by a mov.
In practice it means at least one of the two ops should always be
implemented on 64-bit targets.
Cc: Paolo Bonzini<pbonz...@redhat.com>
Cc: Richard Henderson<r...@twiddle.net>
Signed-off-by: Aurelien Jarno<aurel...@aurel32.net>
---
tcg/tcg-op.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
If we're going to do this (and of course pick a solution for all of the other
backends), I think perhaps x86 should choose trunc + exts as the two that
should be implemented, leaving extu the one that can be folded away.
Something to experiment with...
r~
