static bool
is_coalesce_candidate(const fs_inst *inst, const int *virtual_grf_sizes)
{
if ((inst->opcode != BRW_OPCODE_MOV &&
inst->opcode != SHADER_OPCODE_LOAD_PAYLOAD) ||
inst->is_partial_write() ||
inst->saturate ||
inst->src[0].file != GRF ||
inst->src[0].negate ||
inst->src[0].abs ||
!inst->src[0].is_contiguous() ||
inst->dst.file != GRF ||
inst->dst.type != inst->src[0].type) {
return false;
}
if (virtual_grf_sizes[inst->src[0].reg] >
virtual_grf_sizes[inst->dst.reg])
return false;
if (inst->opcode == SHADER_OPCODE_LOAD_PAYLOAD) {
if (!is_copy_payload(inst, virtual_grf_sizes[inst->src[0].reg])) {
return false;
}
}
return true;
}
static bool
is_expression(const fs_inst *const inst)
{
switch (inst->opcode) {
case BRW_OPCODE_SEL:
case BRW_OPCODE_NOT:
case BRW_OPCODE_AND:
case BRW_OPCODE_OR:
case BRW_OPCODE_XOR:
case BRW_OPCODE_SHR:
case BRW_OPCODE_SHL:
case BRW_OPCODE_ASR:
case BRW_OPCODE_CMP:
case BRW_OPCODE_CMPN:
case BRW_OPCODE_ADD:
case BRW_OPCODE_MUL:
case BRW_OPCODE_FRC:
case BRW_OPCODE_RNDU:
case BRW_OPCODE_RNDD:
case BRW_OPCODE_RNDE:
case BRW_OPCODE_RNDZ:
case BRW_OPCODE_LINE:
case BRW_OPCODE_PLN:
case BRW_OPCODE_MAD:
case BRW_OPCODE_LRP:
case FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD:
case FS_OPCODE_VARYING_PULL_CONSTANT_LOAD_GEN7:
case FS_OPCODE_VARYING_PULL_CONSTANT_LOAD:
case FS_OPCODE_CINTERP:
case FS_OPCODE_LINTERP:
return true;
case SHADER_OPCODE_RCP:
case SHADER_OPCODE_RSQ:
case SHADER_OPCODE_SQRT:
case SHADER_OPCODE_EXP2:
case SHADER_OPCODE_LOG2:
case SHADER_OPCODE_POW:
case SHADER_OPCODE_INT_QUOTIENT:
case SHADER_OPCODE_INT_REMAINDER:
case SHADER_OPCODE_SIN:
case SHADER_OPCODE_COS:
return inst->mlen == 0;
case SHADER_OPCODE_LOAD_PAYLOAD:
return !is_copy_payload(inst);
default:
return inst->is_tex();
}
}
