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tcg-mips: Split large ldst offsets
Use this to reduce goto_tb by one insn. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
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@ -480,16 +480,18 @@ static inline void tcg_out_ext16s(TCGContext *s, TCGReg ret, TCGReg arg)
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}
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}
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static inline void tcg_out_ldst(TCGContext *s, int opc, TCGArg arg,
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TCGReg arg1, TCGArg arg2)
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static void tcg_out_ldst(TCGContext *s, int opc, TCGReg data,
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TCGReg addr, intptr_t ofs)
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{
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if (arg2 == (int16_t) arg2) {
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tcg_out_opc_imm(s, opc, arg, arg1, arg2);
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} else {
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tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, arg2);
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tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_AT, TCG_REG_AT, arg1);
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tcg_out_opc_imm(s, opc, arg, TCG_REG_AT, 0);
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int16_t lo = ofs;
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if (ofs != lo) {
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tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, ofs - lo);
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if (addr != TCG_REG_ZERO) {
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tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_AT, TCG_REG_AT, addr);
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}
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addr = TCG_REG_AT;
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}
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tcg_out_opc_imm(s, opc, data, addr, lo);
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}
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static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg arg,
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@ -1315,9 +1317,8 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
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tcg_abort();
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} else {
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/* indirect jump method */
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tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT,
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(uintptr_t)(s->tb_next + args[0]));
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tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_AT, TCG_REG_AT, 0);
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tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_AT, TCG_REG_ZERO,
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(uintptr_t)(s->tb_next + args[0]));
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tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_AT, 0);
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}
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tcg_out_nop(s);
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