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simplify legacy (sse and avx) sad calculation in simd_int.h

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Stanislav Shwartsman 2014-08-05 19:01:01 +00:00
parent 5e80c1f419
commit 2231ffb242
1 changed files with 11 additions and 12 deletions
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23
bochs/cpu/simd_int.h
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@ -1083,16 +1083,17 @@ BX_CPP_INLINE void simd_pbroadcastq(BxPackedAvxRegister *op, Bit64u val_64, unsi
BX_CPP_INLINE void xmm_psadbw(BxPackedXmmRegister *op1, const BxPackedXmmRegister *op2)
{
unsigned temp1 = 0, temp2 = 0, n;
unsigned temp = 0;
for (unsigned n=0; n < 8; n++)
temp += abs(op1->xmmubyte(n) - op2->xmmubyte(n));
for (n=0; n < 8; n++)
temp1 += abs(op1->xmmubyte(n) - op2->xmmubyte(n));
op1->xmm64u(0) = Bit64u(temp);
for (; n < 16; n++)
temp2 += abs(op1->xmmubyte(n) - op2->xmmubyte(n));
temp = 0;
for (unsigned n=8; n < 16; n++)
temp += abs(op1->xmmubyte(n) - op2->xmmubyte(n));
op1->xmm64u(0) = Bit64u(temp1);
op1->xmm64u(1) = Bit64u(temp2);
op1->xmm64u(1) = Bit64u(temp);
}
// multiple sum of absolute differences (MSAD)
@ -1100,7 +1101,7 @@ BX_CPP_INLINE void xmm_psadbw(BxPackedXmmRegister *op1, const BxPackedXmmRegiste
BX_CPP_INLINE void xmm_mpsadbw(BxPackedXmmRegister *r, const BxPackedXmmRegister *op1, const BxPackedXmmRegister *op2, Bit8u offset)
{
unsigned src_offset = (offset & 0x3) * 4;
unsigned dst_offset = ((offset >> 2) & 1) * 4;
unsigned dst_offset = ((offset >> 2) & 0x1) * 4;
for (unsigned j=0; j < 8; j++)
{
@ -1109,10 +1110,8 @@ BX_CPP_INLINE void xmm_mpsadbw(BxPackedXmmRegister *r, const BxPackedXmmRegister
for (unsigned k=0; k < 4; k++) {
Bit8u temp1 = op1->xmmubyte(j + k + dst_offset);
Bit8u temp2 = op2->xmmubyte( k + src_offset);
if (temp1 > temp2)
r->xmm16u(j) += (temp1 - temp2);
else
r->xmm16u(j) += (temp2 - temp1);
r->xmm16u(j) = abs(temp1 - temp2);
}
}
}