static bool
skip_bit(const struct brw_context *brw, brw_inst *src, int bit)
{
/* pad bit */
if (bit == 7)
return true;
/* The compact bit -- uncompacted can't have it set. */
if (bit == 29)
return true;
/* pad bit */
if (bit == 47)
return true;
/* pad bits */
if (bit >= 90 && bit <= 95)
return true;
/* sometimes these are pad bits. */
if (brw_inst_opcode(brw, src) != BRW_OPCODE_SEND &&
brw_inst_opcode(brw, src) != BRW_OPCODE_SENDC &&
brw_inst_opcode(brw, src) != BRW_OPCODE_BREAK &&
brw_inst_opcode(brw, src) != BRW_OPCODE_CONTINUE &&
brw_inst_src0_reg_file(brw, src) != BRW_IMMEDIATE_VALUE &&
brw_inst_src1_reg_file(brw, src) != BRW_IMMEDIATE_VALUE &&
bit >= 121) {
return true;
}
return false;
}
static bool
skip_bit(const struct gen_device_info *devinfo, brw_inst *src, int bit)
{
/* pad bit */
if (bit == 7)
return true;
/* The compact bit -- uncompacted can't have it set. */
if (bit == 29)
return true;
if (is_3src(devinfo, (opcode)brw_inst_opcode(devinfo, src))) {
if (devinfo->gen >= 9 || devinfo->is_cherryview) {
if (bit == 127)
return true;
} else {
if (bit >= 126 && bit <= 127)
return true;
if (bit == 105)
return true;
if (bit == 84)
return true;
if (bit >= 35 && bit <= 36)
return true;
}
} else {
if (bit == 47)
return true;
if (devinfo->gen >= 8) {
if (bit == 11)
return true;
if (bit == 95)
return true;
} else {
if (devinfo->gen < 7 && bit == 90)
return true;
if (bit >= 91 && bit <= 95)
return true;
}
}
/* sometimes these are pad bits. */
if (brw_inst_opcode(devinfo, src) != BRW_OPCODE_SEND &&
brw_inst_opcode(devinfo, src) != BRW_OPCODE_SENDC &&
brw_inst_src0_reg_file(devinfo, src) != BRW_IMMEDIATE_VALUE &&
brw_inst_src1_reg_file(devinfo, src) != BRW_IMMEDIATE_VALUE &&
bit >= 121) {
return true;
}
return false;
}
/**
* When doing fuzz testing, pad bits won't round-trip.
*
* This sort of a superset of skip_bit, which is testing for changing bits that
* aren't worth testing for fuzzing. We also just want to clear bits that
* become meaningless once fuzzing twiddles a related bit.
*/
static void
clear_pad_bits(const struct brw_context *brw, brw_inst *inst)
{
if (brw_inst_opcode(brw, inst) != BRW_OPCODE_SEND &&
brw_inst_opcode(brw, inst) != BRW_OPCODE_SENDC &&
brw_inst_opcode(brw, inst) != BRW_OPCODE_BREAK &&
brw_inst_opcode(brw, inst) != BRW_OPCODE_CONTINUE &&
brw_inst_src0_reg_file(brw, inst) != BRW_IMMEDIATE_VALUE &&
brw_inst_src1_reg_file(brw, inst) != BRW_IMMEDIATE_VALUE) {
brw_inst_set_bits(inst, 127, 111, 0);
}
}
/**
* When doing fuzz testing, pad bits won't round-trip.
*
* This sort of a superset of skip_bit, which is testing for changing bits that
* aren't worth testing for fuzzing. We also just want to clear bits that
* become meaningless once fuzzing twiddles a related bit.
*/
static void
clear_pad_bits(const struct gen_device_info *devinfo, brw_inst *inst)
{
if (brw_inst_opcode(devinfo, inst) != BRW_OPCODE_SEND &&
brw_inst_opcode(devinfo, inst) != BRW_OPCODE_SENDC &&
brw_inst_src0_reg_file(devinfo, inst) != BRW_IMMEDIATE_VALUE &&
brw_inst_src1_reg_file(devinfo, inst) != BRW_IMMEDIATE_VALUE) {
brw_inst_set_bits(inst, 127, 111, 0);
}
if (devinfo->gen == 8 && !devinfo->is_cherryview &&
is_3src(devinfo, (opcode)brw_inst_opcode(devinfo, inst))) {
brw_inst_set_bits(inst, 105, 105, 0);
brw_inst_set_bits(inst, 84, 84, 0);
brw_inst_set_bits(inst, 36, 35, 0);
}
}
static bool
src1_is_null(const struct brw_device_info *devinfo, const brw_inst *inst)
{
return brw_inst_src1_reg_file(devinfo, inst) == BRW_ARCHITECTURE_REGISTER_FILE &&
brw_inst_src1_da_reg_nr(devinfo, inst) == BRW_ARF_NULL;
}