tree ac3f3a855f82c2a844f5c1b15308dad6a7cc51d3
parent 212c328d615f6750659d39c6fd544d05be314fa1
author Richard Henderson <rth@twiddle.net> 1349202749 -0700
committer Aurelien Jarno <aurelien@aurel32.net> 1350489097 +0200

tcg: Optimize half-dead add2/sub2

When x86_64 guest is not in 64-bit mode, the high-part of the 64-bit
add is dead.  When the host is 32-bit, we can simplify to 32-bit
arithmetic.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>