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TCG: Improve tb_phys_hash_func()
authorAurelien Jarno <[email protected]>
Tue, 28 Dec 2010 16:46:59 +0000 (17:46 +0100)
committerAurelien Jarno <[email protected]>
Fri, 31 Dec 2010 21:23:38 +0000 (22:23 +0100)
commitf96a38347a0c6ab31fbb6200c13e684d1fee449c
tree61f7f5b8544a44d210927d4521cd55cc9f353c94tree | snapshot
parent8aac08b10b2e8c131b9385d2dc37e4a02e1d12c1commit | diff
TCG: Improve tb_phys_hash_func()

Most of emulated CPU have instructions aligned on 16 or 32 bits, while
on others GCC tries to align the target jump location. This means that
1/2 or 3/4 of tb_phys_hash entries are never used.

Update the hash function tb_phys_hash_func() to ignore the two lowest
bits of the address. This brings a 6% speed-up when booting a MIPS
image.

Signed-off-by: Aurelien Jarno <[email protected]>
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