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tcg: Increase tcg_out_dupi_vec immediate to int64_t

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While we don't store more than tcg_target_long in TCGTemp,
we shouldn't be limited to that for code generation.  We will
be able to use this for INDEX_op_dup2_vec with 2 constants.

Also pass along the minimal vece that may be said to apply
to the constant.  This allows some simplification in the
various backends.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2020-03-31 01:02:08 -07:00
parent 0a6a8bc8eb
commit 4e18617555
4 changed files with 69 additions and 33 deletions
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31
tcg/tcg.c
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@ -117,8 +117,8 @@ static bool tcg_out_dup_vec(TCGContext *s, TCGType type, unsigned vece,
TCGReg dst, TCGReg src);
static bool tcg_out_dupm_vec(TCGContext *s, TCGType type, unsigned vece,
TCGReg dst, TCGReg base, intptr_t offset);
static void tcg_out_dupi_vec(TCGContext *s, TCGType type,
TCGReg dst, tcg_target_long arg);
static void tcg_out_dupi_vec(TCGContext *s, TCGType type, unsigned vece,
TCGReg dst, int64_t arg);
static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc, unsigned vecl,
unsigned vece, const TCGArg *args,
const int *const_args);
@ -133,8 +133,8 @@ static inline bool tcg_out_dupm_vec(TCGContext *s, TCGType type, unsigned vece,
{
g_assert_not_reached();
}
static inline void tcg_out_dupi_vec(TCGContext *s, TCGType type,
TCGReg dst, tcg_target_long arg)
static inline void tcg_out_dupi_vec(TCGContext *s, TCGType type, unsigned vece,
TCGReg dst, int64_t arg)
{
g_assert_not_reached();
}
@ -3390,7 +3390,28 @@ static void temp_load(TCGContext *s, TCGTemp *ts, TCGRegSet desired_regs,
if (ts->type <= TCG_TYPE_I64) {
tcg_out_movi(s, ts->type, reg, ts->val);
} else {
tcg_out_dupi_vec(s, ts->type, reg, ts->val);
uint64_t val = ts->val;
MemOp vece = MO_64;
/*
* Find the minimal vector element that matches the constant.
* The targets will, in general, have to do this search anyway,
* do this generically.
*/
if (TCG_TARGET_REG_BITS == 32) {
val = dup_const(MO_32, val);
vece = MO_32;
}
if (val == dup_const(MO_8, val)) {
vece = MO_8;
} else if (val == dup_const(MO_16, val)) {
vece = MO_16;
} else if (TCG_TARGET_REG_BITS == 64 &&
val == dup_const(MO_32, val)) {
vece = MO_32;
}
tcg_out_dupi_vec(s, ts->type, vece, reg, ts->val);
}
ts->mem_coherent = 0;
break;