OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

When targeting PPU use rlwinm instead of andi. if possible

Browse Source 
andi. is microcoded and slow there.

Signed-off-by: malc <av1474@comtv.ru>
This commit is contained in:
malc 2009-09-06 06:31:09 +04:00
parent b3d6fb4a6a
commit c45851c44a
1 changed files with 54 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
tcg/ppc/tcg-target.c
View File

@ -1253,16 +1253,62 @@ static void tcg_out_op(TCGContext *s, int opc, const TCGArg *args,
case INDEX_op_and_i32:
if (const_args[2]) {
if ((args[2] & 0xffff) == args[2])
tcg_out32 (s, ANDI | RS (args[1]) | RA (args[0]) | args[2]);
else if ((args[2] & 0xffff0000) == args[2])
tcg_out32 (s, ANDIS | RS (args[1]) | RA (args[0])
| ((args[2] >> 16) & 0xffff));
uint32_t c;
c = args[2];
if (!c) {
tcg_out_movi (s, TCG_TYPE_I32, args[0], 0);
break;
}
#ifdef __PPU__
uint32_t t, n;
int mb, me;
n = c ^ -(c & 1);
t = n + (n & -n);
if ((t & (t - 1)) == 0) {
int lzc, tzc;
if ((c & 0x80000001) == 0x80000001) {
lzc = clz32 (n);
tzc = ctz32 (n);
mb = 32 - tzc;
me = lzc - 1;
}
else {
tcg_out_movi (s, TCG_TYPE_I32, 0, args[2]);
lzc = clz32 (c);
tzc = ctz32 (c);
mb = lzc;
me = 31 - tzc;
}
tcg_out32 (s, (RLWINM
| RA (args[0])
| RS (args[1])
| SH (0)
| MB (mb)
| ME (me)
)
);
}
else
#endif /* !__PPU__ */
{
if ((c & 0xffff) == c)
tcg_out32 (s, ANDI | RS (args[1]) | RA (args[0]) | c);
else if ((c & 0xffff0000) == c)
tcg_out32 (s, ANDIS | RS (args[1]) | RA (args[0])
| ((c >> 16) & 0xffff));
else {
tcg_out_movi (s, TCG_TYPE_I32, 0, c);
tcg_out32 (s, AND | SAB (args[1], args[0], 0));
}
}
}
else
tcg_out32 (s, AND | SAB (args[1], args[0], args[2]));
break;