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tcg: Implement concat*_i64 with deposit_i64 

For tcg_gen_concat_i32_i64 we only use deposit if the host supports it.
For tcg_gen_concat32_i64 even if the host does not, as we get identical
code before and after.

Note that this relies on the ANDI -> EXTU patch for the identity claim.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Richard Henderson 2012-09-21 17:18:13 -07:00 committed by Aurelien Jarno
parent 6f3bb33eaa
commit 77276f6581
1 changed files with 30 additions and 30 deletions
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60
tcg/tcg-op.h
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@ -1809,36 +1809,6 @@ static inline void tcg_gen_discard_i64(TCGv_i64 arg)
#endif
}
static inline void tcg_gen_concat_i32_i64(TCGv_i64 dest, TCGv_i32 low, TCGv_i32 high)
{
#if TCG_TARGET_REG_BITS == 32
tcg_gen_mov_i32(TCGV_LOW(dest), low);
tcg_gen_mov_i32(TCGV_HIGH(dest), high);
#else
TCGv_i64 tmp = tcg_temp_new_i64();
/* This extension is only needed for type correctness.
We may be able to do better given target specific information. */
tcg_gen_extu_i32_i64(tmp, high);
tcg_gen_shli_i64(tmp, tmp, 32);
tcg_gen_extu_i32_i64(dest, low);
tcg_gen_or_i64(dest, dest, tmp);
tcg_temp_free_i64(tmp);
#endif
}
static inline void tcg_gen_concat32_i64(TCGv_i64 dest, TCGv_i64 low, TCGv_i64 high)
{
#if TCG_TARGET_REG_BITS == 32
tcg_gen_concat_i32_i64(dest, TCGV_LOW(low), TCGV_LOW(high));
#else
TCGv_i64 tmp = tcg_temp_new_i64();
tcg_gen_ext32u_i64(dest, low);
tcg_gen_shli_i64(tmp, high, 32);
tcg_gen_or_i64(dest, dest, tmp);
tcg_temp_free_i64(tmp);
#endif
}
static inline void tcg_gen_andc_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2)
{
if (TCG_TARGET_HAS_andc_i32) {
@ -2181,6 +2151,36 @@ static inline void tcg_gen_deposit_i64(TCGv_i64 ret, TCGv_i64 arg1,
tcg_temp_free_i64(t1);
}
static inline void tcg_gen_concat_i32_i64(TCGv_i64 dest, TCGv_i32 low,
TCGv_i32 high)
{
#if TCG_TARGET_REG_BITS == 32
tcg_gen_mov_i32(TCGV_LOW(dest), low);
tcg_gen_mov_i32(TCGV_HIGH(dest), high);
#else
TCGv_i64 tmp = tcg_temp_new_i64();
/* These extensions are only needed for type correctness.
We may be able to do better given target specific information. */
tcg_gen_extu_i32_i64(tmp, high);
tcg_gen_extu_i32_i64(dest, low);
/* If deposit is available, use it. Otherwise use the extra
knowledge that we have of the zero-extensions above. */
if (TCG_TARGET_HAS_deposit_i64 && TCG_TARGET_deposit_i64_valid(32, 32)) {
tcg_gen_deposit_i64(dest, dest, tmp, 32, 32);
} else {
tcg_gen_shli_i64(tmp, tmp, 32);
tcg_gen_or_i64(dest, dest, tmp);
}
tcg_temp_free_i64(tmp);
#endif
}
static inline void tcg_gen_concat32_i64(TCGv_i64 dest, TCGv_i64 low,
TCGv_i64 high)
{
tcg_gen_deposit_i64(dest, low, high, 32, 32);
}
static inline void tcg_gen_movcond_i32(TCGCond cond, TCGv_i32 ret,
TCGv_i32 c1, TCGv_i32 c2,
TCGv_i32 v1, TCGv_i32 v2)