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Put back simple hash function for icache and trace cache - more cache misses but still ~3% speedup

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This commit is contained in:
Stanislav Shwartsman 2008-10-14 17:23:53 +00:00
parent 9170dbfe38
commit 82815c4bef
1 changed files with 3 additions and 2 deletions
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5
bochs/cpu/icache.h
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@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: icache.h,v 1.39 2008-07-26 15:07:14 sshwarts Exp $
// $Id: icache.h,v 1.40 2008-10-14 17:23:53 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2007 Stanislav Shwartsman
@ -140,7 +140,8 @@ public:
BX_CPP_INLINE unsigned hash(bx_phy_address pAddr) const
{
return (pAddr + (pAddr << 2) + (pAddr>>6)) & (BxICacheEntries-1);
// return (pAddr + (pAddr << 2) + (pAddr>>6)) & (BxICacheEntries-1);
return (pAddr) & (BxICacheEntries-1);
}
#if BX_SUPPORT_TRACE_CACHE