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tcg/ia64: fix and optimize ld/st slow path

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Store slow path has been broken in e141ab52d:
- the arguments are shifted before the last one (mem_index) is written.
- the shift is done for both slow and fast paths.

Fix that. Also optimize a bit by bundling the move together. This still
can be optimized, but it's better to wait for a decision to be taken on
the arguments order.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2012-08-26 00:45:27 +02:00
parent 18d445b443
commit d03c98d80f
1 changed files with 23 additions and 15 deletions
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38
tcg/ia64/tcg-target.c
View file

@ -1532,12 +1532,13 @@ static inline void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int opc)
}
#ifdef CONFIG_TCG_PASS_AREG0
/* XXX/FIXME: suboptimal */
tcg_out_mov(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[2],
tcg_target_call_iarg_regs[1]);
tcg_out_mov(s, TCG_TYPE_TL, tcg_target_call_iarg_regs[1],
tcg_target_call_iarg_regs[0]);
tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0],
TCG_AREG0);
tcg_out_bundle(s, mII,
tcg_opc_a5 (TCG_REG_P7, OPC_ADDL_A5, TCG_REG_R58,
mem_index, TCG_REG_R0),
tcg_opc_a4 (TCG_REG_P7, OPC_ADDS_A4,
TCG_REG_R57, 0, TCG_REG_R56),
tcg_opc_a4 (TCG_REG_P7, OPC_ADDS_A4,
TCG_REG_R56, 0, TCG_AREG0));
#endif
if (!bswap || s_bits == 0) {
tcg_out_bundle(s, miB,
@ -1659,15 +1660,21 @@ static inline void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc)
#ifdef CONFIG_TCG_PASS_AREG0
/* XXX/FIXME: suboptimal */
tcg_out_mov(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[3],
tcg_target_call_iarg_regs[2]);
tcg_out_mov(s, TCG_TYPE_I64, tcg_target_call_iarg_regs[2],
tcg_target_call_iarg_regs[1]);
tcg_out_mov(s, TCG_TYPE_TL, tcg_target_call_iarg_regs[1],
tcg_target_call_iarg_regs[0]);
tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0],
TCG_AREG0);
#endif
tcg_out_bundle(s, mII,
tcg_opc_a5 (TCG_REG_P7, OPC_ADDL_A5, TCG_REG_R59,
mem_index, TCG_REG_R0),
tcg_opc_a4 (TCG_REG_P7, OPC_ADDS_A4,
TCG_REG_R58, 0, TCG_REG_R57),
tcg_opc_a4 (TCG_REG_P7, OPC_ADDS_A4,
TCG_REG_R57, 0, TCG_REG_R56));
tcg_out_bundle(s, miB,
tcg_opc_m4 (TCG_REG_P6, opc_st_m4[opc],
data_reg, TCG_REG_R3),
tcg_opc_a4 (TCG_REG_P7, OPC_ADDS_A4,
TCG_REG_R56, 0, TCG_AREG0),
tcg_opc_b5 (TCG_REG_P7, OPC_BR_CALL_SPTK_MANY_B5,
TCG_REG_B0, TCG_REG_B6));
#else
tcg_out_bundle(s, miB,
tcg_opc_m4 (TCG_REG_P6, opc_st_m4[opc],
data_reg, TCG_REG_R3),
@ -1675,6 +1682,7 @@ static inline void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc)
mem_index, TCG_REG_R0),
tcg_opc_b5 (TCG_REG_P7, OPC_BR_CALL_SPTK_MANY_B5,
TCG_REG_B0, TCG_REG_B6));
#endif
}
#else /* !CONFIG_SOFTMMU */