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tcg: Implement tcg_gen_gvec_3i() 

Let's add tcg_gen_gvec_3i(), similar to tcg_gen_gvec_2i(), however
without introducing "gen_helper_gvec_3i *fnoi", as it isn't needed
for now.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190416185301.25344-2-david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
David Hildenbrand 2019-04-16 20:52:21 +02:00 committed by Richard Henderson
parent e24f44dbea
commit e1227bb6e5
2 changed files with 163 additions and 0 deletions
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139
tcg/tcg-op-gvec.c
View File

@ -663,6 +663,29 @@ static void expand_3_i32(uint32_t dofs, uint32_t aofs,
tcg_temp_free_i32(t0);
}
static void expand_3i_i32(uint32_t dofs, uint32_t aofs, uint32_t bofs,
uint32_t oprsz, int32_t c, bool load_dest,
void (*fni)(TCGv_i32, TCGv_i32, TCGv_i32, int32_t))
{
TCGv_i32 t0 = tcg_temp_new_i32();
TCGv_i32 t1 = tcg_temp_new_i32();
TCGv_i32 t2 = tcg_temp_new_i32();
uint32_t i;
for (i = 0; i < oprsz; i += 4) {
tcg_gen_ld_i32(t0, cpu_env, aofs + i);
tcg_gen_ld_i32(t1, cpu_env, bofs + i);
if (load_dest) {
tcg_gen_ld_i32(t2, cpu_env, dofs + i);
}
fni(t2, t0, t1, c);
tcg_gen_st_i32(t2, cpu_env, dofs + i);
}
tcg_temp_free_i32(t0);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);
}
/* Expand OPSZ bytes worth of three-operand operations using i32 elements. */
static void expand_4_i32(uint32_t dofs, uint32_t aofs, uint32_t bofs,
uint32_t cofs, uint32_t oprsz, bool write_aofs,
@ -770,6 +793,29 @@ static void expand_3_i64(uint32_t dofs, uint32_t aofs,
tcg_temp_free_i64(t0);
}
static void expand_3i_i64(uint32_t dofs, uint32_t aofs, uint32_t bofs,
uint32_t oprsz, int64_t c, bool load_dest,
void (*fni)(TCGv_i64, TCGv_i64, TCGv_i64, int64_t))
{
TCGv_i64 t0 = tcg_temp_new_i64();
TCGv_i64 t1 = tcg_temp_new_i64();
TCGv_i64 t2 = tcg_temp_new_i64();
uint32_t i;
for (i = 0; i < oprsz; i += 8) {
tcg_gen_ld_i64(t0, cpu_env, aofs + i);
tcg_gen_ld_i64(t1, cpu_env, bofs + i);
if (load_dest) {
tcg_gen_ld_i64(t2, cpu_env, dofs + i);
}
fni(t2, t0, t1, c);
tcg_gen_st_i64(t2, cpu_env, dofs + i);
}
tcg_temp_free_i64(t0);
tcg_temp_free_i64(t1);
tcg_temp_free_i64(t2);
}
/* Expand OPSZ bytes worth of three-operand operations using i64 elements. */
static void expand_4_i64(uint32_t dofs, uint32_t aofs, uint32_t bofs,
uint32_t cofs, uint32_t oprsz, bool write_aofs,
@ -883,6 +929,35 @@ static void expand_3_vec(unsigned vece, uint32_t dofs, uint32_t aofs,
tcg_temp_free_vec(t0);
}
/*
* Expand OPSZ bytes worth of three-vector operands and an immediate operand
* using host vectors.
*/
static void expand_3i_vec(unsigned vece, uint32_t dofs, uint32_t aofs,
uint32_t bofs, uint32_t oprsz, uint32_t tysz,
TCGType type, int64_t c, bool load_dest,
void (*fni)(unsigned, TCGv_vec, TCGv_vec, TCGv_vec,
int64_t))
{
TCGv_vec t0 = tcg_temp_new_vec(type);
TCGv_vec t1 = tcg_temp_new_vec(type);
TCGv_vec t2 = tcg_temp_new_vec(type);
uint32_t i;
for (i = 0; i < oprsz; i += tysz) {
tcg_gen_ld_vec(t0, cpu_env, aofs + i);
tcg_gen_ld_vec(t1, cpu_env, bofs + i);
if (load_dest) {
tcg_gen_ld_vec(t2, cpu_env, dofs + i);
}
fni(vece, t2, t0, t1, c);
tcg_gen_st_vec(t2, cpu_env, dofs + i);
}
tcg_temp_free_vec(t0);
tcg_temp_free_vec(t1);
tcg_temp_free_vec(t2);
}
/* Expand OPSZ bytes worth of four-operand operations using host vectors. */
static void expand_4_vec(unsigned vece, uint32_t dofs, uint32_t aofs,
uint32_t bofs, uint32_t cofs, uint32_t oprsz,
@ -1174,6 +1249,70 @@ void tcg_gen_gvec_3(uint32_t dofs, uint32_t aofs, uint32_t bofs,
}
}
/* Expand a vector operation with three vectors and an immediate. */
void tcg_gen_gvec_3i(uint32_t dofs, uint32_t aofs, uint32_t bofs,
uint32_t oprsz, uint32_t maxsz, int64_t c,
const GVecGen3i *g)
{
TCGType type;
uint32_t some;
check_size_align(oprsz, maxsz, dofs | aofs | bofs);
check_overlap_3(dofs, aofs, bofs, maxsz);
type = 0;
if (g->fniv) {
type = choose_vector_type(g->opc, g->vece, oprsz, g->prefer_i64);
}
switch (type) {
case TCG_TYPE_V256:
/*
* Recall that ARM SVE allows vector sizes that are not a
* power of 2, but always a multiple of 16. The intent is
* that e.g. size == 80 would be expanded with 2x32 + 1x16.
*/
some = QEMU_ALIGN_DOWN(oprsz, 32);
expand_3i_vec(g->vece, dofs, aofs, bofs, some, 32, TCG_TYPE_V256,
c, g->load_dest, g->fniv);
if (some == oprsz) {
break;
}
dofs += some;
aofs += some;
bofs += some;
oprsz -= some;
maxsz -= some;
/* fallthru */
case TCG_TYPE_V128:
expand_3i_vec(g->vece, dofs, aofs, bofs, oprsz, 16, TCG_TYPE_V128,
c, g->load_dest, g->fniv);
break;
case TCG_TYPE_V64:
expand_3i_vec(g->vece, dofs, aofs, bofs, oprsz, 8, TCG_TYPE_V64,
c, g->load_dest, g->fniv);
break;
case 0:
if (g->fni8 && check_size_impl(oprsz, 8)) {
expand_3i_i64(dofs, aofs, bofs, oprsz, c, g->load_dest, g->fni8);
} else if (g->fni4 && check_size_impl(oprsz, 4)) {
expand_3i_i32(dofs, aofs, bofs, oprsz, c, g->load_dest, g->fni4);
} else {
assert(g->fno != NULL);
tcg_gen_gvec_3_ool(dofs, aofs, bofs, oprsz, maxsz, c, g->fno);
return;
}
break;
default:
g_assert_not_reached();
}
if (oprsz < maxsz) {
expand_clr(dofs + oprsz, maxsz - oprsz);
}
}
/* Expand a vector four-operand operation. */
void tcg_gen_gvec_4(uint32_t dofs, uint32_t aofs, uint32_t bofs, uint32_t cofs,
uint32_t oprsz, uint32_t maxsz, const GVecGen4 *g)

24
tcg/tcg-op-gvec.h
View File

@ -164,6 +164,27 @@ typedef struct {
bool load_dest;
} GVecGen3;
typedef struct {
/*
* Expand inline as a 64-bit or 32-bit integer. Only one of these will be
* non-NULL.
*/
void (*fni8)(TCGv_i64, TCGv_i64, TCGv_i64, int64_t);
void (*fni4)(TCGv_i32, TCGv_i32, TCGv_i32, int32_t);
/* Expand inline with a host vector type. */
void (*fniv)(unsigned, TCGv_vec, TCGv_vec, TCGv_vec, int64_t);
/* Expand out-of-line helper w/descriptor, data in descriptor. */
gen_helper_gvec_3 *fno;
/* The opcode, if any, to which this corresponds. */
TCGOpcode opc;
/* The vector element size, if applicable. */
uint8_t vece;
/* Prefer i64 to v64. */
bool prefer_i64;
/* Load dest as a 3rd source operand. */
bool load_dest;
} GVecGen3i;
typedef struct {
/* Expand inline as a 64-bit or 32-bit integer.
Only one of these will be non-NULL. */
@ -193,6 +214,9 @@ void tcg_gen_gvec_2s(uint32_t dofs, uint32_t aofs, uint32_t oprsz,
uint32_t maxsz, TCGv_i64 c, const GVecGen2s *);
void tcg_gen_gvec_3(uint32_t dofs, uint32_t aofs, uint32_t bofs,
uint32_t oprsz, uint32_t maxsz, const GVecGen3 *);
void tcg_gen_gvec_3i(uint32_t dofs, uint32_t aofs, uint32_t bofs,
uint32_t oprsz, uint32_t maxsz, int64_t c,
const GVecGen3i *);
void tcg_gen_gvec_4(uint32_t dofs, uint32_t aofs, uint32_t bofs, uint32_t cofs,
uint32_t oprsz, uint32_t maxsz, const GVecGen4 *);