When movcond_i32 is available we can further reduce the generated
op count from 12 to 6, and the generated code size on i686 from
88 to 74 bytes.
Signed-off-by: Richard Henderson <r...@twiddle.net>
---
tcg/tcg-op.h | 22 +++++++++++++++-------
1 file changed, 15 insertions(+), 7 deletions(-)
diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h
index 3e375ea..0145a09 100644
--- a/tcg/tcg-op.h
+++ b/tcg/tcg-op.h
@@ -2147,16 +2147,24 @@ static inline void tcg_gen_movcond_i64(TCGCond cond,
TCGv_i64 ret,
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);
+ if (TCG_TARGET_HAS_movcond_i32) {
+ tcg_gen_movi_i32(t1, 0);
+ tcg_gen_movcond_i32(TCG_COND_NE, TCGV_LOW(ret), t0, t1,
+ TCGV_LOW(v1), TCGV_LOW(v2));
+ tcg_gen_movcond_i32(TCG_COND_NE, TCGV_HIGH(ret), t0, t1,
+ TCGV_HIGH(v1), TCGV_HIGH(v2));
+ } else {
+ tcg_gen_neg_i32(t0, t0);
- 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_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 {
--
1.7.11.4
