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tcg: Implement muls2 with mulu2

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Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2013-02-19 23:52:01 -08:00 committed by Blue Swirl
parent 76f1313323
commit f402f38f43
1 changed files with 40 additions and 0 deletions
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40
tcg/tcg-op.h
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@ -2396,6 +2396,26 @@ static inline void tcg_gen_muls2_i32(TCGv_i32 rl, TCGv_i32 rh,
tcg_gen_op4_i32(INDEX_op_muls2_i32, rl, rh, arg1, arg2);
/* Allow the optimizer room to replace muls2 with two moves. */
tcg_gen_op0(INDEX_op_nop);
} else if (TCG_TARGET_REG_BITS == 32 && TCG_TARGET_HAS_mulu2_i32) {
TCGv_i32 t0 = tcg_temp_new_i32();
TCGv_i32 t1 = tcg_temp_new_i32();
TCGv_i32 t2 = tcg_temp_new_i32();
TCGv_i32 t3 = tcg_temp_new_i32();
tcg_gen_op4_i32(INDEX_op_mulu2_i32, t0, t1, arg1, arg2);
/* Allow the optimizer room to replace mulu2 with two moves. */
tcg_gen_op0(INDEX_op_nop);
/* Adjust for negative inputs. */
tcg_gen_sari_i32(t2, arg1, 31);
tcg_gen_sari_i32(t3, arg2, 31);
tcg_gen_and_i32(t2, t2, arg2);
tcg_gen_and_i32(t3, t3, arg1);
tcg_gen_sub_i32(rh, t1, t2);
tcg_gen_sub_i32(rh, rh, t3);
tcg_gen_mov_i32(rl, t0);
tcg_temp_free_i32(t0);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);
tcg_temp_free_i32(t3);
} else {
TCGv_i64 t0 = tcg_temp_new_i64();
TCGv_i64 t1 = tcg_temp_new_i64();
@ -2455,6 +2475,26 @@ static inline void tcg_gen_mulu2_i64(TCGv_i64 rl, TCGv_i64 rh,
tcg_gen_op4_i64(INDEX_op_mulu2_i64, rl, rh, arg1, arg2);
/* Allow the optimizer room to replace mulu2 with two moves. */
tcg_gen_op0(INDEX_op_nop);
} else if (TCG_TARGET_HAS_mulu2_i64) {
TCGv_i64 t0 = tcg_temp_new_i64();
TCGv_i64 t1 = tcg_temp_new_i64();
TCGv_i64 t2 = tcg_temp_new_i64();
TCGv_i64 t3 = tcg_temp_new_i64();
tcg_gen_op4_i64(INDEX_op_mulu2_i64, t0, t1, arg1, arg2);
/* Allow the optimizer room to replace mulu2 with two moves. */
tcg_gen_op0(INDEX_op_nop);
/* Adjust for negative inputs. */
tcg_gen_sari_i64(t2, arg1, 63);
tcg_gen_sari_i64(t3, arg2, 63);
tcg_gen_and_i64(t2, t2, arg2);
tcg_gen_and_i64(t3, t3, arg1);
tcg_gen_sub_i64(rh, t1, t2);
tcg_gen_sub_i64(rh, rh, t3);
tcg_gen_mov_i64(rl, t0);
tcg_temp_free_i64(t0);
tcg_temp_free_i64(t1);
tcg_temp_free_i64(t2);
tcg_temp_free_i64(t3);
} else {
TCGv_i64 t0 = tcg_temp_new_i64();
int sizemask = 0;