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sh2: optimisations in drc

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This commit is contained in:
kub 2020-05-06 23:06:10 +02:00
parent 39c5ec3f4c
commit 904fb98e6c
2 changed files with 72 additions and 51 deletions
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24
cpu/drc/cmn.h
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@ -17,18 +17,18 @@ void drc_cmn_cleanup(void);
// binary search approach, since we don't have CLZ on ARM920T
#define FOR_ALL_BITS_SET_DO(mask, bit, code) { \
u32 __mask = mask; \
for (bit = 31; bit >= 0 && mask; bit--, __mask <<= 1) { \
if (!(__mask & (0xffff << 16))) \
bit -= 16, __mask <<= 16; \
if (!(__mask & (0xff << 24))) \
bit -= 8, __mask <<= 8; \
if (!(__mask & (0xf << 28))) \
bit -= 4, __mask <<= 4; \
if (!(__mask & (0x3 << 30))) \
bit -= 2, __mask <<= 2; \
if (!(__mask & (0x1 << 31))) \
bit -= 1, __mask <<= 1; \
if (__mask & (0x1 << 31)) { \
for (bit = 0; bit < 32 && mask; bit++, __mask >>= 1) { \
if (!(__mask & 0xffff)) \
bit += 16,__mask >>= 16; \
if (!(__mask & 0xff)) \
bit += 8, __mask >>= 8; \
if (!(__mask & 0xf)) \
bit += 4, __mask >>= 4; \
if (!(__mask & 0x3)) \
bit += 2, __mask >>= 2; \
if (!(__mask & 0x1)) \
bit += 1, __mask >>= 1; \
if (__mask & 0x1) { \
code; \
} \
} \