Avoiding 64-bit arithmetic (outside of the compare) reduces the
generated op count from 15 to 12, and the generated code size on
i686 from 105 to 88 bytes.
Signed-off-by: Richard Henderson <r...@twiddle.net>
---
tcg/tcg-op.h | 42 +++++++++++++++++++++++++++++++-----------
1 file changed, 31 insertions(+), 11 deletions(-)
diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h
index 6d28f82..3e375ea 100644
--- a/tcg/tcg-op.h
+++ b/tcg/tcg-op.h
@@ -2141,18 +2141,38 @@ static inline void tcg_gen_movcond_i64(TCGCond cond,
TCGv_i64 ret,
TCGv_i64 c1, TCGv_i64 c2,
TCGv_i64 v1, TCGv_i64 v2)
{
- if (TCG_TARGET_HAS_movcond_i64) {
- tcg_gen_op6i_i64(INDEX_op_movcond_i64, ret, c1, c2, v1, v2, cond);
+ if (TCG_TARGET_REG_BITS == 32) {
+ TCGv_i32 t0 = tcg_temp_new_i32();
+ TCGv_i32 t1 = tcg_temp_new_i32();
+ tcg_gen_op6i_i32(INDEX_op_setcond2_i32, t0,
+ TCGV_LOW(c1), TCGV_HIGH(c1),
+ TCGV_LOW(c2), TCGV_HIGH(c2), cond);
+ tcg_gen_neg_i32(t0, t0);
+
+ tcg_gen_and_i32(t1, TCGV_LOW(v1), t0);
+ tcg_gen_andc_i32(TCGV_LOW(ret), TCGV_LOW(v2), t0);
+ tcg_gen_or_i32(TCGV_LOW(ret), TCGV_LOW(ret), t1);
+
+ tcg_gen_and_i32(t1, TCGV_HIGH(v1), t0);
+ tcg_gen_andc_i32(TCGV_HIGH(ret), TCGV_HIGH(v2), t0);
+ tcg_gen_or_i32(TCGV_HIGH(ret), TCGV_HIGH(ret), t1);
+
+ tcg_temp_free_i32(t0);
+ tcg_temp_free_i32(t1);
} else {
- TCGv_i64 t0 = tcg_temp_new_i64();
- TCGv_i64 t1 = tcg_temp_new_i64();
- tcg_gen_setcond_i64(cond, t0, c1, c2);
- tcg_gen_neg_i64(t0, t0);
- tcg_gen_and_i64(t1, v1, t0);
- tcg_gen_andc_i64(ret, v2, t0);
- tcg_gen_or_i64(ret, ret, t1);
- tcg_temp_free_i64(t0);
- tcg_temp_free_i64(t1);
+ if (TCG_TARGET_HAS_movcond_i64) {
+ tcg_gen_op6i_i64(INDEX_op_movcond_i64, ret, c1, c2, v1, v2, cond);
+ } else {
+ TCGv_i64 t0 = tcg_temp_new_i64();
+ TCGv_i64 t1 = tcg_temp_new_i64();
+ tcg_gen_setcond_i64(cond, t0, c1, c2);
+ tcg_gen_neg_i64(t0, t0);
+ tcg_gen_and_i64(t1, v1, t0);
+ tcg_gen_andc_i64(ret, v2, t0);
+ tcg_gen_or_i64(ret, ret, t1);
+ tcg_temp_free_i64(t0);
+ tcg_temp_free_i64(t1);
+ }
}
}
--
1.7.11.4
