From: Jiajie Chen <c...@jia.je>
LSX support on host cpu is detected via hwcap.
Lower the following ops to LSX:
- dup_vec
- dupi_vec
- dupm_vec
- ld_vec
- st_vec
Signed-off-by: Jiajie Chen <c...@jia.je>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Message-Id: <20230908022302.180442-...@jia.je>
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
tcg/loongarch64/tcg-target-con-set.h | 2 +
tcg/loongarch64/tcg-target-con-str.h | 1 +
tcg/loongarch64/tcg-target.h | 38 ++++-
tcg/loongarch64/tcg-target.opc.h | 12 ++
tcg/loongarch64/tcg-target.c.inc | 219 ++++++++++++++++++++++++++-
5 files changed, 270 insertions(+), 2 deletions(-)
create mode 100644 tcg/loongarch64/tcg-target.opc.h
diff --git a/tcg/loongarch64/tcg-target-con-set.h
b/tcg/loongarch64/tcg-target-con-set.h
index c2bde44613..37b3f80bf9 100644
--- a/tcg/loongarch64/tcg-target-con-set.h
+++ b/tcg/loongarch64/tcg-target-con-set.h
@@ -17,7 +17,9 @@
C_O0_I1(r)
C_O0_I2(rZ, r)
C_O0_I2(rZ, rZ)
+C_O0_I2(w, r)
C_O1_I1(r, r)
+C_O1_I1(w, r)
C_O1_I2(r, r, rC)
C_O1_I2(r, r, ri)
C_O1_I2(r, r, rI)
diff --git a/tcg/loongarch64/tcg-target-con-str.h
b/tcg/loongarch64/tcg-target-con-str.h
index 6e9ccca3ad..81b8d40278 100644
--- a/tcg/loongarch64/tcg-target-con-str.h
+++ b/tcg/loongarch64/tcg-target-con-str.h
@@ -14,6 +14,7 @@
* REGS(letter, register_mask)
*/
REGS('r', ALL_GENERAL_REGS)
+REGS('w', ALL_VECTOR_REGS)
/*
* Define constraint letters for constants:
diff --git a/tcg/loongarch64/tcg-target.h b/tcg/loongarch64/tcg-target.h
index 559be67186..daaf38ee31 100644
--- a/tcg/loongarch64/tcg-target.h
+++ b/tcg/loongarch64/tcg-target.h
@@ -30,7 +30,7 @@
#define LOONGARCH_TCG_TARGET_H
#define TCG_TARGET_INSN_UNIT_SIZE 4
-#define TCG_TARGET_NB_REGS 32
+#define TCG_TARGET_NB_REGS 64
#define MAX_CODE_GEN_BUFFER_SIZE ((size_t)-1)
@@ -68,13 +68,25 @@ typedef enum {
TCG_REG_S7,
TCG_REG_S8,
+ TCG_REG_V0 = 32, TCG_REG_V1, TCG_REG_V2, TCG_REG_V3,
+ TCG_REG_V4, TCG_REG_V5, TCG_REG_V6, TCG_REG_V7,
+ TCG_REG_V8, TCG_REG_V9, TCG_REG_V10, TCG_REG_V11,
+ TCG_REG_V12, TCG_REG_V13, TCG_REG_V14, TCG_REG_V15,
+ TCG_REG_V16, TCG_REG_V17, TCG_REG_V18, TCG_REG_V19,
+ TCG_REG_V20, TCG_REG_V21, TCG_REG_V22, TCG_REG_V23,
+ TCG_REG_V24, TCG_REG_V25, TCG_REG_V26, TCG_REG_V27,
+ TCG_REG_V28, TCG_REG_V29, TCG_REG_V30, TCG_REG_V31,
+
/* aliases */
TCG_AREG0 = TCG_REG_S0,
TCG_REG_TMP0 = TCG_REG_T8,
TCG_REG_TMP1 = TCG_REG_T7,
TCG_REG_TMP2 = TCG_REG_T6,
+ TCG_VEC_TMP0 = TCG_REG_V23,
} TCGReg;
+extern bool use_lsx_instructions;
+
/* used for function call generation */
#define TCG_REG_CALL_STACK TCG_REG_SP
#define TCG_TARGET_STACK_ALIGN 16
@@ -161,6 +173,30 @@ typedef enum {
#define TCG_TARGET_HAS_qemu_ldst_i128 0
+#define TCG_TARGET_HAS_v64 0
+#define TCG_TARGET_HAS_v128 use_lsx_instructions
+#define TCG_TARGET_HAS_v256 0
+
+#define TCG_TARGET_HAS_not_vec 0
+#define TCG_TARGET_HAS_neg_vec 0
+#define TCG_TARGET_HAS_abs_vec 0
+#define TCG_TARGET_HAS_andc_vec 0
+#define TCG_TARGET_HAS_orc_vec 0
+#define TCG_TARGET_HAS_nand_vec 0
+#define TCG_TARGET_HAS_nor_vec 0
+#define TCG_TARGET_HAS_eqv_vec 0
+#define TCG_TARGET_HAS_mul_vec 0
+#define TCG_TARGET_HAS_shi_vec 0
+#define TCG_TARGET_HAS_shs_vec 0
+#define TCG_TARGET_HAS_shv_vec 0
+#define TCG_TARGET_HAS_roti_vec 0
+#define TCG_TARGET_HAS_rots_vec 0
+#define TCG_TARGET_HAS_rotv_vec 0
+#define TCG_TARGET_HAS_sat_vec 0
+#define TCG_TARGET_HAS_minmax_vec 0
+#define TCG_TARGET_HAS_bitsel_vec 0
+#define TCG_TARGET_HAS_cmpsel_vec 0
+
#define TCG_TARGET_DEFAULT_MO (0)
#define TCG_TARGET_NEED_LDST_LABELS
diff --git a/tcg/loongarch64/tcg-target.opc.h b/tcg/loongarch64/tcg-target.opc.h
new file mode 100644
index 0000000000..fd1a40b7fd
--- /dev/null
+++ b/tcg/loongarch64/tcg-target.opc.h
@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) 2023 Jiajie Chen
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version.
+ *
+ * See the COPYING file in the top-level directory for details.
+ *
+ * Target-specific opcodes for host vector expansion. These will be
+ * emitted by tcg_expand_vec_op. For those familiar with GCC internals,
+ * consider these to be UNSPEC with names.
+ */
diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index baf5fc3819..150278e112 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -32,6 +32,8 @@
#include "../tcg-ldst.c.inc"
#include <asm/hwcap.h>
+bool use_lsx_instructions;
+
#ifdef CONFIG_DEBUG_TCG
static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
"zero",
@@ -65,7 +67,39 @@ static const char * const
tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
"s5",
"s6",
"s7",
- "s8"
+ "s8",
+ "vr0",
+ "vr1",
+ "vr2",
+ "vr3",
+ "vr4",
+ "vr5",
+ "vr6",
+ "vr7",
+ "vr8",
+ "vr9",
+ "vr10",
+ "vr11",
+ "vr12",
+ "vr13",
+ "vr14",
+ "vr15",
+ "vr16",
+ "vr17",
+ "vr18",
+ "vr19",
+ "vr20",
+ "vr21",
+ "vr22",
+ "vr23",
+ "vr24",
+ "vr25",
+ "vr26",
+ "vr27",
+ "vr28",
+ "vr29",
+ "vr30",
+ "vr31",
};
#endif
@@ -102,6 +136,15 @@ static const int tcg_target_reg_alloc_order[] = {
TCG_REG_A2,
TCG_REG_A1,
TCG_REG_A0,
+
+ /* Vector registers */
+ TCG_REG_V0, TCG_REG_V1, TCG_REG_V2, TCG_REG_V3,
+ TCG_REG_V4, TCG_REG_V5, TCG_REG_V6, TCG_REG_V7,
+ TCG_REG_V8, TCG_REG_V9, TCG_REG_V10, TCG_REG_V11,
+ TCG_REG_V12, TCG_REG_V13, TCG_REG_V14, TCG_REG_V15,
+ TCG_REG_V16, TCG_REG_V17, TCG_REG_V18, TCG_REG_V19,
+ TCG_REG_V20, TCG_REG_V21, TCG_REG_V22, TCG_REG_V23,
+ /* V24 - V31 are caller-saved, and skipped. */
};
static const int tcg_target_call_iarg_regs[] = {
@@ -135,6 +178,7 @@ static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind
kind, int slot)
#define TCG_CT_CONST_WSZ 0x2000
#define ALL_GENERAL_REGS MAKE_64BIT_MASK(0, 32)
+#define ALL_VECTOR_REGS MAKE_64BIT_MASK(32, 32)
static inline tcg_target_long sextreg(tcg_target_long val, int pos, int len)
{
@@ -1486,6 +1530,154 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
}
}
+static bool tcg_out_dup_vec(TCGContext *s, TCGType type, unsigned vece,
+ TCGReg rd, TCGReg rs)
+{
+ switch (vece) {
+ case MO_8:
+ tcg_out_opc_vreplgr2vr_b(s, rd, rs);
+ break;
+ case MO_16:
+ tcg_out_opc_vreplgr2vr_h(s, rd, rs);
+ break;
+ case MO_32:
+ tcg_out_opc_vreplgr2vr_w(s, rd, rs);
+ break;
+ case MO_64:
+ tcg_out_opc_vreplgr2vr_d(s, rd, rs);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ return true;
+}
+
+static bool tcg_out_dupm_vec(TCGContext *s, TCGType type, unsigned vece,
+ TCGReg r, TCGReg base, intptr_t offset)
+{
+ /* Handle imm overflow and division (vldrepl.d imm is divided by 8) */
+ if (offset < -0x800 || offset > 0x7ff || \
+ (offset & ((1 << vece) - 1)) != 0) {
+ tcg_out_addi(s, TCG_TYPE_I64, TCG_REG_TMP0, base, offset);
+ base = TCG_REG_TMP0;
+ offset = 0;
+ }
+ offset >>= vece;
+
+ switch (vece) {
+ case MO_8:
+ tcg_out_opc_vldrepl_b(s, r, base, offset);
+ break;
+ case MO_16:
+ tcg_out_opc_vldrepl_h(s, r, base, offset);
+ break;
+ case MO_32:
+ tcg_out_opc_vldrepl_w(s, r, base, offset);
+ break;
+ case MO_64:
+ tcg_out_opc_vldrepl_d(s, r, base, offset);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ return true;
+}
+
+static void tcg_out_dupi_vec(TCGContext *s, TCGType type, unsigned vece,
+ TCGReg rd, int64_t v64)
+{
+ /* Try vldi if imm can fit */
+ int64_t value = sextract64(v64, 0, 8 << vece);
+ if (-0x200 <= value && value <= 0x1FF) {
+ uint32_t imm = (vece << 10) | ((uint32_t)v64 & 0x3FF);
+ tcg_out_opc_vldi(s, rd, imm);
+ return;
+ }
+
+ /* TODO: vldi patterns when imm 12 is set */
+
+ /* Fallback to vreplgr2vr */
+ tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_TMP0, value);
+ switch (vece) {
+ case MO_8:
+ tcg_out_opc_vreplgr2vr_b(s, rd, TCG_REG_TMP0);
+ break;
+ case MO_16:
+ tcg_out_opc_vreplgr2vr_h(s, rd, TCG_REG_TMP0);
+ break;
+ case MO_32:
+ tcg_out_opc_vreplgr2vr_w(s, rd, TCG_REG_TMP0);
+ break;
+ case MO_64:
+ tcg_out_opc_vreplgr2vr_d(s, rd, TCG_REG_TMP0);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+}
+
+static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
+ unsigned vecl, unsigned vece,
+ const TCGArg args[TCG_MAX_OP_ARGS],
+ const int const_args[TCG_MAX_OP_ARGS])
+{
+ TCGType type = vecl + TCG_TYPE_V64;
+ TCGArg a0, a1, a2;
+ TCGReg temp = TCG_REG_TMP0;
+
+ a0 = args[0];
+ a1 = args[1];
+ a2 = args[2];
+
+ /* Currently only supports V128 */
+ tcg_debug_assert(type == TCG_TYPE_V128);
+
+ switch (opc) {
+ case INDEX_op_st_vec:
+ /* Try to fit vst imm */
+ if (-0x800 <= a2 && a2 <= 0x7ff) {
+ tcg_out_opc_vst(s, a0, a1, a2);
+ } else {
+ tcg_out_movi(s, TCG_TYPE_I64, temp, a2);
+ tcg_out_opc_vstx(s, a0, a1, temp);
+ }
+ break;
+ case INDEX_op_ld_vec:
+ /* Try to fit vld imm */
+ if (-0x800 <= a2 && a2 <= 0x7ff) {
+ tcg_out_opc_vld(s, a0, a1, a2);
+ } else {
+ tcg_out_movi(s, TCG_TYPE_I64, temp, a2);
+ tcg_out_opc_vldx(s, a0, a1, temp);
+ }
+ break;
+ case INDEX_op_dupm_vec:
+ tcg_out_dupm_vec(s, type, vece, a0, a1, a2);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+}
+
+int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type, unsigned vece)
+{
+ switch (opc) {
+ case INDEX_op_ld_vec:
+ case INDEX_op_st_vec:
+ case INDEX_op_dup_vec:
+ case INDEX_op_dupm_vec:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+void tcg_expand_vec_op(TCGOpcode opc, TCGType type, unsigned vece,
+ TCGArg a0, ...)
+{
+ g_assert_not_reached();
+}
+
static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
{
switch (op) {
@@ -1627,6 +1819,14 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode
op)
case INDEX_op_movcond_i64:
return C_O1_I4(r, rZ, rJ, rZ, rZ);
+ case INDEX_op_ld_vec:
+ case INDEX_op_dupm_vec:
+ case INDEX_op_dup_vec:
+ return C_O1_I1(w, r);
+
+ case INDEX_op_st_vec:
+ return C_O0_I2(w, r);
+
default:
g_assert_not_reached();
}
@@ -1708,6 +1908,10 @@ static void tcg_target_init(TCGContext *s)
exit(EXIT_FAILURE);
}
+ if (hwcap & HWCAP_LOONGARCH_LSX) {
+ use_lsx_instructions = 1;
+ }
+
tcg_target_available_regs[TCG_TYPE_I32] = ALL_GENERAL_REGS;
tcg_target_available_regs[TCG_TYPE_I64] = ALL_GENERAL_REGS;
@@ -1723,6 +1927,18 @@ static void tcg_target_init(TCGContext *s)
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S8);
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S9);
+ if (use_lsx_instructions) {
+ tcg_target_available_regs[TCG_TYPE_V128] = ALL_VECTOR_REGS;
+ tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V24);
+ tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V25);
+ tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V26);
+ tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V27);
+ tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V28);
+ tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V29);
+ tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V30);
+ tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V31);
+ }
+
s->reserved_regs = 0;
tcg_regset_set_reg(s->reserved_regs, TCG_REG_ZERO);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP0);
@@ -1731,6 +1947,7 @@ static void tcg_target_init(TCGContext *s)
tcg_regset_set_reg(s->reserved_regs, TCG_REG_SP);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_TP);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_RESERVED);
+ tcg_regset_set_reg(s->reserved_regs, TCG_VEC_TMP0);
}
typedef struct {
--
2.34.1
