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authorRichard Henderson <rth@twiddle.net>2014-03-26 11:09:44 -0700
committerRichard Henderson <rth@twiddle.net>2014-04-18 16:57:37 -0700
commit662deb908f72a0282c4c2fdb9f62f9f484c62e5b (patch)
treed96cf3a88a8bfa1d438e64df7a511e10a13b6342
parentf46fc4e6a953e78b283834f67bc338bd35d7d316 (diff)
tcg: Fix fallback from muls2_i64 to mulu2_i64
Brown Bag sez, don't put the fallback code into the wrong function. Also, check for muluh_i64 and use tcg_gen_mulu2_i64 instead of raw ops. Signed-off-by: Richard Henderson <rth@twiddle.net>
-rw-r--r--tcg/tcg-op.h38
1 files changed, 18 insertions, 20 deletions
diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h
index 08dd09e266..d43f45d805 100644
--- a/tcg/tcg-op.h
+++ b/tcg/tcg-op.h
@@ -2520,26 +2520,6 @@ static inline void tcg_gen_mulu2_i64(TCGv_i64 rl, TCGv_i64 rh,
tcg_gen_op3_i64(INDEX_op_muluh_i64, rh, arg1, arg2);
tcg_gen_mov_i64(rl, t);
tcg_temp_free_i64(t);
- } 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;
@@ -2567,6 +2547,24 @@ static inline void tcg_gen_muls2_i64(TCGv_i64 rl, TCGv_i64 rh,
tcg_gen_op3_i64(INDEX_op_mulsh_i64, rh, arg1, arg2);
tcg_gen_mov_i64(rl, t);
tcg_temp_free_i64(t);
+ } else if (TCG_TARGET_HAS_mulu2_i64 || TCG_TARGET_HAS_muluh_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_mulu2_i64(t0, t1, arg1, arg2);
+ /* 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;