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tcg-ia64: Use A3 form of logical operations 

We can and/or/xor/andcm small constants, saving one cycle.

Acked-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-09-05 17:13:43 -04:00
parent f940fb086c
commit 25c9c73bdc
1 changed files with 34 additions and 30 deletions
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64
tcg/ia64/tcg-target.c
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@ -263,6 +263,7 @@ enum {
OPC_MOV_I_I26 = 0x00150000000ull,
OPC_MOVL_X2 = 0x0c000000000ull,
OPC_OR_A1 = 0x10070000000ull,
OPC_OR_A3 = 0x10170000000ull,
OPC_SETF_EXP_M18 = 0x0c748000000ull,
OPC_SETF_SIG_M18 = 0x0c708000000ull,
OPC_SHL_I7 = 0x0f240000000ull,
@ -281,6 +282,7 @@ enum {
OPC_UNPACK4_L_I2 = 0x0f860000000ull,
OPC_XMA_L_F2 = 0x1d000000000ull,
OPC_XOR_A1 = 0x10078000000ull,
OPC_XOR_A3 = 0x10178000000ull,
OPC_ZXT1_I29 = 0x00080000000ull,
OPC_ZXT2_I29 = 0x00088000000ull,
OPC_ZXT4_I29 = 0x00090000000ull,
@ -1044,27 +1046,34 @@ static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg,
}
}
static void tcg_out_alu(TCGContext *s, uint64_t opc_a1, TCGReg ret, TCGArg arg1,
int const_arg1, TCGArg arg2, int const_arg2)
static inline void tcg_out_alu(TCGContext *s, uint64_t opc_a1, uint64_t opc_a3,
TCGReg ret, TCGArg arg1, int const_arg1,
TCGArg arg2, int const_arg2)
{
uint64_t opc1 = 0, opc2 = 0;
if (const_arg1 && arg1 != 0) {
opc1 = tcg_opc_a5(TCG_REG_P0, OPC_ADDL_A5,
TCG_REG_R2, arg1, TCG_REG_R0);
arg1 = TCG_REG_R2;
}
uint64_t opc1 = 0, opc2 = 0, opc3 = 0;
if (const_arg2 && arg2 != 0) {
opc2 = tcg_opc_a5(TCG_REG_P0, OPC_ADDL_A5,
TCG_REG_R3, arg2, TCG_REG_R0);
arg2 = TCG_REG_R3;
}
if (const_arg1 && arg1 != 0) {
if (opc_a3 && arg1 == (int8_t)arg1) {
opc3 = tcg_opc_a3(TCG_REG_P0, opc_a3, ret, arg1, arg2);
} else {
opc1 = tcg_opc_a5(TCG_REG_P0, OPC_ADDL_A5,
TCG_REG_R2, arg1, TCG_REG_R0);
arg1 = TCG_REG_R2;
}
}
if (opc3 == 0) {
opc3 = tcg_opc_a1(TCG_REG_P0, opc_a1, ret, arg1, arg2);
}
tcg_out_bundle(s, (opc1 || opc2 ? mII : miI),
opc1 ? opc1 : INSN_NOP_M,
opc2 ? opc2 : INSN_NOP_I,
tcg_opc_a1(TCG_REG_P0, opc_a1, ret, arg1, arg2));
opc3);
}
static inline void tcg_out_add(TCGContext *s, TCGReg ret, TCGReg arg1,
@ -1076,29 +1085,21 @@ static inline void tcg_out_add(TCGContext *s, TCGReg ret, TCGReg arg1,
INSN_NOP_M,
tcg_opc_a4(TCG_REG_P0, OPC_ADDS_A4, ret, arg2, arg1));
} else {
tcg_out_alu(s, OPC_ADD_A1, ret, arg1, 0, arg2, const_arg2);
tcg_out_alu(s, OPC_ADD_A1, 0, ret, arg1, 0, arg2, const_arg2);
}
}
static inline void tcg_out_sub(TCGContext *s, TCGReg ret, TCGArg arg1,
int const_arg1, TCGArg arg2, int const_arg2)
{
if (const_arg1 && arg1 == (int8_t)arg1) {
if (const_arg2) {
tcg_out_movi(s, TCG_TYPE_I64, ret, arg1 - arg2);
return;
}
tcg_out_bundle(s, mmI,
INSN_NOP_M,
INSN_NOP_M,
tcg_opc_a3(TCG_REG_P0, OPC_SUB_A3, ret, arg1, arg2));
} else if (const_arg2 && -arg2 == sextract64(-arg2, 0, 14)) {
if (!const_arg1 && const_arg2 && -arg2 == sextract64(-arg2, 0, 14)) {
tcg_out_bundle(s, mmI,
INSN_NOP_M,
INSN_NOP_M,
tcg_opc_a4(TCG_REG_P0, OPC_ADDS_A4, ret, -arg2, arg1));
} else {
tcg_out_alu(s, OPC_SUB_A1, ret, arg1, const_arg1, arg2, const_arg2);
tcg_out_alu(s, OPC_SUB_A1, OPC_SUB_A3, ret,
arg1, const_arg1, arg2, const_arg2);
}
}
@ -2112,13 +2113,14 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
case INDEX_op_and_i32:
case INDEX_op_and_i64:
tcg_out_alu(s, OPC_AND_A1, args[0], args[1], const_args[1],
args[2], const_args[2]);
/* TCG expects arg2 constant; A3 expects arg1 constant. Swap. */
tcg_out_alu(s, OPC_AND_A1, OPC_AND_A3, args[0],
args[2], const_args[2], args[1], const_args[1]);
break;
case INDEX_op_andc_i32:
case INDEX_op_andc_i64:
tcg_out_alu(s, OPC_ANDCM_A1, args[0], args[1], const_args[1],
args[2], const_args[2]);
tcg_out_alu(s, OPC_ANDCM_A1, OPC_ANDCM_A3, args[0],
args[1], const_args[1], args[2], const_args[2]);
break;
case INDEX_op_eqv_i32:
case INDEX_op_eqv_i64:
@ -2137,8 +2139,9 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
break;
case INDEX_op_or_i32:
case INDEX_op_or_i64:
tcg_out_alu(s, OPC_OR_A1, args[0], args[1], const_args[1],
args[2], const_args[2]);
/* TCG expects arg2 constant; A3 expects arg1 constant. Swap. */
tcg_out_alu(s, OPC_OR_A1, OPC_OR_A3, args[0],
args[2], const_args[2], args[1], const_args[1]);
break;
case INDEX_op_orc_i32:
case INDEX_op_orc_i64:
@ -2147,8 +2150,9 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
break;
case INDEX_op_xor_i32:
case INDEX_op_xor_i64:
tcg_out_alu(s, OPC_XOR_A1, args[0], args[1], const_args[1],
args[2], const_args[2]);
/* TCG expects arg2 constant; A3 expects arg1 constant. Swap. */
tcg_out_alu(s, OPC_XOR_A1, OPC_XOR_A3, args[0],
args[2], const_args[2], args[1], const_args[1]);
break;
case INDEX_op_mul_i32: