fridtjof/qemu-cr16
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

tcg: Simplify extract2 usage in tcg_gen_shifti_i64

Browse source 
The else after the TCG_TARGET_HAS_extract2 test is exactly
the same as what tcg_gen_extract2_i32 would emit itself.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2025-01-01 10:04:00 -08:00
parent 4dea00368d
commit 170a39f8fb
1 changed files with 4 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

22
tcg/tcg-op.c
View file

@ -1818,30 +1818,16 @@ static inline void tcg_gen_shifti_i64(TCGv_i64 ret, TCGv_i64 arg1,
tcg_gen_movi_i32(TCGV_LOW(ret), 0);
}
} else if (right) {
if (tcg_op_supported(INDEX_op_extract2, TCG_TYPE_I32, 0)) {
tcg_gen_extract2_i32(TCGV_LOW(ret),
TCGV_LOW(arg1), TCGV_HIGH(arg1), c);
} else {
tcg_gen_shri_i32(TCGV_LOW(ret), TCGV_LOW(arg1), c);
tcg_gen_deposit_i32(TCGV_LOW(ret), TCGV_LOW(ret),
TCGV_HIGH(arg1), 32 - c, c);
}
tcg_gen_extract2_i32(TCGV_LOW(ret), TCGV_LOW(arg1),
TCGV_HIGH(arg1), c);
if (arith) {
tcg_gen_sari_i32(TCGV_HIGH(ret), TCGV_HIGH(arg1), c);
} else {
tcg_gen_shri_i32(TCGV_HIGH(ret), TCGV_HIGH(arg1), c);
}
} else {
if (tcg_op_supported(INDEX_op_extract2, TCG_TYPE_I32, 0)) {
tcg_gen_extract2_i32(TCGV_HIGH(ret),
TCGV_LOW(arg1), TCGV_HIGH(arg1), 32 - c);
} else {
TCGv_i32 t0 = tcg_temp_ebb_new_i32();
tcg_gen_shri_i32(t0, TCGV_LOW(arg1), 32 - c);
tcg_gen_deposit_i32(TCGV_HIGH(ret), t0,
TCGV_HIGH(arg1), c, 32 - c);
tcg_temp_free_i32(t0);
}
tcg_gen_extract2_i32(TCGV_HIGH(ret), TCGV_LOW(arg1),
TCGV_HIGH(arg1), 32 - c);
tcg_gen_shli_i32(TCGV_LOW(ret), TCGV_LOW(arg1), c);
}
}