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tcg/i386: Implement avx512 immediate rotate 

AVX512VL has VPROLD and VPROLQ, layered onto the same
opcode as PSHIFTD, but requires EVEX encoding and W1.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-12-17 22:02:57 -08:00
parent 264e418230
commit 4e73f842e8
2 changed files with 14 additions and 3 deletions
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15
tcg/i386/tcg-target.c.inc
View File

@ -362,7 +362,7 @@ static bool tcg_target_const_match(int64_t val, TCGType type, int ct)
#define OPC_PSHUFLW (0x70 | P_EXT | P_SIMDF2)
#define OPC_PSHUFHW (0x70 | P_EXT | P_SIMDF3)
#define OPC_PSHIFTW_Ib (0x71 | P_EXT | P_DATA16) /* /2 /6 /4 */
#define OPC_PSHIFTD_Ib (0x72 | P_EXT | P_DATA16) /* /2 /6 /4 */
#define OPC_PSHIFTD_Ib (0x72 | P_EXT | P_DATA16) /* /1 /2 /6 /4 */
#define OPC_PSHIFTQ_Ib (0x73 | P_EXT | P_DATA16) /* /2 /6 /4 */
#define OPC_PSLLW (0xf1 | P_EXT | P_DATA16)
#define OPC_PSLLD (0xf2 | P_EXT | P_DATA16)
@ -3000,6 +3000,14 @@ static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
insn = shift_imm_insn[vece];
}
sub = 4;
goto gen_shift;
case INDEX_op_rotli_vec:
insn = OPC_PSHIFTD_Ib | P_EVEX; /* VPROL[DQ] */
if (vece == MO_64) {
insn |= P_VEXW;
}
sub = 1;
goto gen_shift;
gen_shift:
tcg_debug_assert(vece != MO_8);
if (type == TCG_TYPE_V256) {
@ -3289,6 +3297,7 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
case INDEX_op_shli_vec:
case INDEX_op_shri_vec:
case INDEX_op_sari_vec:
case INDEX_op_rotli_vec:
case INDEX_op_x86_psrldq_vec:
return C_O1_I1(x, x);
@ -3310,11 +3319,13 @@ int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type, unsigned vece)
case INDEX_op_xor_vec:
case INDEX_op_andc_vec:
return 1;
case INDEX_op_rotli_vec:
case INDEX_op_cmp_vec:
case INDEX_op_cmpsel_vec:
return -1;
case INDEX_op_rotli_vec:
return have_avx512vl && vece >= MO_32 ? 1 : -1;
case INDEX_op_shli_vec:
case INDEX_op_shri_vec:
/* We must expand the operation for MO_8. */

2
tcg/i386/tcg-target.h
View File

@ -195,7 +195,7 @@ extern bool have_movbe;
#define TCG_TARGET_HAS_not_vec 0
#define TCG_TARGET_HAS_neg_vec 0
#define TCG_TARGET_HAS_abs_vec 1
#define TCG_TARGET_HAS_roti_vec 0
#define TCG_TARGET_HAS_roti_vec have_avx512vl
#define TCG_TARGET_HAS_rots_vec 0
#define TCG_TARGET_HAS_rotv_vec 0
#define TCG_TARGET_HAS_shi_vec 1