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intel/compiler: export brw_num_sources_from_inst

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We want to call this from brw_disasm.c, so move it out to brw_eu.c
since it's about to become more of a shared utility function than
something specific to the EU validator.

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20072>
This commit is contained in:
Paulo Zanoni
2022-12-08 15:39:01 -08:00
committed by Marge Bot
parent df50add27e
commit 295c5f59e0
3 changed files with 73 additions and 69 deletions
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56
src/intel/compiler/brw_eu.c
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@@ -747,3 +747,59 @@ brw_opcode_desc_from_hw(const struct brw_isa_info *isa, unsigned hw)
{
return hw < ARRAY_SIZE(isa->hw_to_descs) ? isa->hw_to_descs[hw] : NULL;
}
unsigned
brw_num_sources_from_inst(const struct brw_isa_info *isa,
const brw_inst *inst)
{
const struct intel_device_info *devinfo = isa->devinfo;
const struct opcode_desc *desc =
brw_opcode_desc(isa, brw_inst_opcode(isa, inst));
unsigned math_function;
if (brw_inst_opcode(isa, inst) == BRW_OPCODE_MATH) {
math_function = brw_inst_math_function(devinfo, inst);
} else if (devinfo->ver < 6 &&
brw_inst_opcode(isa, inst) == BRW_OPCODE_SEND) {
if (brw_inst_sfid(devinfo, inst) == BRW_SFID_MATH) {
/* src1 must be a descriptor (including the information to determine
* that the SEND is doing an extended math operation), but src0 can
* actually be null since it serves as the source of the implicit GRF
* to MRF move.
*
* If we stop using that functionality, we'll have to revisit this.
*/
return 2;
} else {
/* Send instructions are allowed to have null sources since they use
* the base_mrf field to specify which message register source.
*/
return 0;
}
} else {
assert(desc->nsrc < 4);
return desc->nsrc;
}
switch (math_function) {
case BRW_MATH_FUNCTION_INV:
case BRW_MATH_FUNCTION_LOG:
case BRW_MATH_FUNCTION_EXP:
case BRW_MATH_FUNCTION_SQRT:
case BRW_MATH_FUNCTION_RSQ:
case BRW_MATH_FUNCTION_SIN:
case BRW_MATH_FUNCTION_COS:
case BRW_MATH_FUNCTION_SINCOS:
case GFX8_MATH_FUNCTION_INVM:
case GFX8_MATH_FUNCTION_RSQRTM:
return 1;
case BRW_MATH_FUNCTION_FDIV:
case BRW_MATH_FUNCTION_POW:
case BRW_MATH_FUNCTION_INT_DIV_QUOTIENT_AND_REMAINDER:
case BRW_MATH_FUNCTION_INT_DIV_QUOTIENT:
case BRW_MATH_FUNCTION_INT_DIV_REMAINDER:
return 2;
default:
unreachable("not reached");
}
}