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tcg: Add basic data movement for TCGv_i128

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Add code generation functions for data movement between
TCGv_i128 (mov) and to/from TCGv_i64 (concat, extract).

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-10-20 08:00:51 +10:00
parent 43eef72f41
commit 4771e71c28
3 changed files with 37 additions and 0 deletions
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4
include/tcg/tcg-op.h
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@ -712,6 +712,10 @@ void tcg_gen_extrh_i64_i32(TCGv_i32 ret, TCGv_i64 arg);
void tcg_gen_extr_i64_i32(TCGv_i32 lo, TCGv_i32 hi, TCGv_i64 arg);
void tcg_gen_extr32_i64(TCGv_i64 lo, TCGv_i64 hi, TCGv_i64 arg);
void tcg_gen_mov_i128(TCGv_i128 dst, TCGv_i128 src);
void tcg_gen_extr_i128_i64(TCGv_i64 lo, TCGv_i64 hi, TCGv_i128 arg);
void tcg_gen_concat_i64_i128(TCGv_i128 ret, TCGv_i64 lo, TCGv_i64 hi);
static inline void tcg_gen_concat32_i64(TCGv_i64 ret, TCGv_i64 lo, TCGv_i64 hi)
{
tcg_gen_deposit_i64(ret, lo, hi, 32, 32);

13
tcg/tcg-internal.h
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@ -117,4 +117,17 @@ extern TCGv_i32 TCGV_LOW(TCGv_i64) QEMU_ERROR("32-bit code path is reachable");
extern TCGv_i32 TCGV_HIGH(TCGv_i64) QEMU_ERROR("32-bit code path is reachable");
#endif
static inline TCGv_i64 TCGV128_LOW(TCGv_i128 t)
{
/* For 32-bit, offset by 2, which may then have TCGV_{LOW,HIGH} applied. */
int o = HOST_BIG_ENDIAN ? 64 / TCG_TARGET_REG_BITS : 0;
return temp_tcgv_i64(tcgv_i128_temp(t) + o);
}
static inline TCGv_i64 TCGV128_HIGH(TCGv_i128 t)
{
int o = HOST_BIG_ENDIAN ? 0 : 64 / TCG_TARGET_REG_BITS;
return temp_tcgv_i64(tcgv_i128_temp(t) + o);
}
#endif /* TCG_INTERNAL_H */

20
tcg/tcg-op.c
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@ -2747,6 +2747,26 @@ void tcg_gen_extr32_i64(TCGv_i64 lo, TCGv_i64 hi, TCGv_i64 arg)
tcg_gen_shri_i64(hi, arg, 32);
}
void tcg_gen_extr_i128_i64(TCGv_i64 lo, TCGv_i64 hi, TCGv_i128 arg)
{
tcg_gen_mov_i64(lo, TCGV128_LOW(arg));
tcg_gen_mov_i64(hi, TCGV128_HIGH(arg));
}
void tcg_gen_concat_i64_i128(TCGv_i128 ret, TCGv_i64 lo, TCGv_i64 hi)
{
tcg_gen_mov_i64(TCGV128_LOW(ret), lo);
tcg_gen_mov_i64(TCGV128_HIGH(ret), hi);
}
void tcg_gen_mov_i128(TCGv_i128 dst, TCGv_i128 src)
{
if (dst != src) {
tcg_gen_mov_i64(TCGV128_LOW(dst), TCGV128_LOW(src));
tcg_gen_mov_i64(TCGV128_HIGH(dst), TCGV128_HIGH(src));
}
}
/* QEMU specific operations. */
void tcg_gen_exit_tb(const TranslationBlock *tb, unsigned idx)