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intel/mi: Add a new gen_mi_store_if() helper.

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This performs predicated MI_STORE_REGISTER_MEM commands, assuming that
the condition is already loaded into MI_PREDICATE_DATA.

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
This commit is contained in:
Kenneth Graunke 2019-04-01 16:33:08 -07:00
parent 27b5817b6c
commit 74063ee61a
1 changed files with 53 additions and 0 deletions
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53
src/intel/common/gen_mi_builder.h
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@ -503,6 +503,59 @@ gen_mi_memcpy(struct gen_mi_builder *b, __gen_address_type dst,
#if GEN_GEN >= 8 || GEN_IS_HASWELL
/**
* Perform a predicated store (assuming the condition is already loaded
* in the MI_PREDICATE_RESULT register) of the value in src to the memory
* location specified by dst. Non-memory destinations are not supported.
*
* This function consumes one reference for each of src and dst.
*/
static inline void
gen_mi_store_if(struct gen_mi_builder *b,
struct gen_mi_value dst,
struct gen_mi_value src)
{
assert(!dst.invert && !src.invert);
gen_mi_builder_flush_math(b);
/* We can only predicate MI_STORE_REGISTER_MEM, so restrict the
* destination to be memory, and resolve the source to a temporary
* register if it isn't in one already.
*/
assert(dst.type == GEN_MI_VALUE_TYPE_MEM64 ||
dst.type == GEN_MI_VALUE_TYPE_MEM32);
if (src.type != GEN_MI_VALUE_TYPE_REG32 ||
src.type != GEN_MI_VALUE_TYPE_REG64) {
struct gen_mi_value tmp = gen_mi_new_gpr(b);
_gen_mi_copy_no_unref(b, tmp, src);
src = tmp;
}
if (dst.type == GEN_MI_VALUE_TYPE_MEM64) {
gen_mi_builder_emit(b, GENX(MI_STORE_REGISTER_MEM), srm) {
srm.RegisterAddress = src.reg;
srm.MemoryAddress = dst.addr;
srm.PredicateEnable = true;
}
gen_mi_builder_emit(b, GENX(MI_STORE_REGISTER_MEM), srm) {
srm.RegisterAddress = src.reg + 4;
srm.MemoryAddress = __gen_address_offset(dst.addr, 4);
srm.PredicateEnable = true;
}
} else {
gen_mi_builder_emit(b, GENX(MI_STORE_REGISTER_MEM), srm) {
srm.RegisterAddress = src.reg;
srm.MemoryAddress = dst.addr;
srm.PredicateEnable = true;
}
}
gen_mi_value_unref(b, src);
gen_mi_value_unref(b, dst);
}
static inline void
_gen_mi_builder_push_math(struct gen_mi_builder *b,
const uint32_t *dwords,