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tcg: Add TCG_CALL_RET_BY_VEC 

This will be used by _WIN64 to return i128.  Not yet used,
because allocation is not yet enabled.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-10-20 01:13:52 +10:00
parent 5e3d0c199f
commit c6556aa0c8
2 changed files with 20 additions and 0 deletions
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1
tcg/tcg-internal.h
View File

@ -37,6 +37,7 @@
typedef enum {
TCG_CALL_RET_NORMAL, /* by registers */
TCG_CALL_RET_BY_REF, /* for i128, by reference */
TCG_CALL_RET_BY_VEC, /* for i128, by vector register */
} TCGCallReturnKind;
typedef enum {

19
tcg/tcg.c
View File

@ -752,6 +752,10 @@ static void init_call_layout(TCGHelperInfo *info)
/* Query the last register now to trigger any assert early. */
tcg_target_call_oarg_reg(info->out_kind, info->nr_out - 1);
break;
case TCG_CALL_RET_BY_VEC:
/* Query the single register now to trigger any assert early. */
tcg_target_call_oarg_reg(TCG_CALL_RET_BY_VEC, 0);
break;
case TCG_CALL_RET_BY_REF:
/*
* Allocate the first argument to the output.
@ -4605,6 +4609,21 @@ static void tcg_reg_alloc_call(TCGContext *s, TCGOp *op)
}
break;
case TCG_CALL_RET_BY_VEC:
{
TCGTemp *ts = arg_temp(op->args[0]);
tcg_debug_assert(ts->base_type == TCG_TYPE_I128);
tcg_debug_assert(ts->temp_subindex == 0);
if (!ts->mem_allocated) {
temp_allocate_frame(s, ts);
}
tcg_out_st(s, TCG_TYPE_V128,
tcg_target_call_oarg_reg(TCG_CALL_RET_BY_VEC, 0),
ts->mem_base->reg, ts->mem_offset);
}
/* fall through to mark all parts in memory */
case TCG_CALL_RET_BY_REF:
/* The callee has performed a write through the reference. */
for (i = 0; i < nb_oargs; i++) {