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AVX512: fix masked broadcast with mask of all zero corner case - no memory access should be made at all

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This commit is contained in:
Stanislav Shwartsman 2019-12-13 13:44:30 +00:00
parent c9ac9a1e43
commit abdeea560a
1 changed files with 3 additions and 3 deletions
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6
bochs/cpu/load.cc
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@ -280,7 +280,7 @@ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LOAD_BROADCAST_MASK_VectorD(bxInstruction_
unsigned len = i->getVL();
if (i->getEvexb()) {
Bit32u val_32 = read_virtual_dword(i->seg(), eaddr);
Bit32u val_32 = (opmask & 0x1) ? read_virtual_dword(i->seg(), eaddr) : 0;
simd_pbroadcastd(&BX_AVX_REG(BX_VECTOR_TMP_REGISTER), val_32, len * 4);
}
else {
@ -326,7 +326,7 @@ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LOAD_BROADCAST_MASK_VectorQ(bxInstruction_
unsigned len = i->getVL();
if (i->getEvexb()) {
Bit64u val_64 = read_virtual_qword(i->seg(), eaddr);
Bit64u val_64 = (opmask & 0x1) ? read_virtual_qword(i->seg(), eaddr) : 0;
simd_pbroadcastq(&BX_AVX_REG(BX_VECTOR_TMP_REGISTER), val_64, len * 2);
}
else {
@ -378,7 +378,7 @@ void BX_CPP_AttrRegparmN(1) BX_CPU_C::LOAD_BROADCAST_MASK_Half_VectorD(bxInstruc
bx_address eaddr = BX_CPU_RESOLVE_ADDR(i);
if (i->getEvexb()) {
Bit32u val_32 = read_virtual_dword(i->seg(), eaddr);
Bit32u val_32 = (opmask & 0x1) ? read_virtual_dword(i->seg(), eaddr) : 0;
simd_pbroadcastd(&BX_AVX_REG(BX_VECTOR_TMP_REGISTER), val_32, len * 2);
}
else {