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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org
Subject: [Qemu-devel] [PULL 06/16] tcg: Expand vector minmax using cmp+cmpsel
Date: Wed, 22 May 2019 18:28:11 -0400	[thread overview]
Message-ID: <20190522222821.23850-7-richard.henderson@linaro.org> (raw)
In-Reply-To: <20190522222821.23850-1-richard.henderson@linaro.org>

Provide a generic fallback for the min/max operations.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/tcg-op-vec.c | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/tcg/tcg-op-vec.c b/tcg/tcg-op-vec.c
index 004a34935b..501d9630a2 100644
--- a/tcg/tcg-op-vec.c
+++ b/tcg/tcg-op-vec.c
@@ -120,6 +120,10 @@ bool tcg_can_emit_vecop_list(const TCGOpcode *list,
             }
             break;
         case INDEX_op_cmpsel_vec:
+        case INDEX_op_smin_vec:
+        case INDEX_op_smax_vec:
+        case INDEX_op_umin_vec:
+        case INDEX_op_umax_vec:
             if (tcg_can_emit_vec_op(INDEX_op_cmp_vec, type, vece)) {
                 continue;
             }
@@ -632,24 +636,32 @@ void tcg_gen_ussub_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
     do_op3_nofail(vece, r, a, b, INDEX_op_ussub_vec);
 }
 
+static void do_minmax(unsigned vece, TCGv_vec r, TCGv_vec a,
+                      TCGv_vec b, TCGOpcode opc, TCGCond cond)
+{
+    if (!do_op3(vece, r, a, b, opc)) {
+        tcg_gen_cmpsel_vec(cond, vece, r, a, b, a, b);
+    }
+}
+
 void tcg_gen_smin_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
 {
-    do_op3_nofail(vece, r, a, b, INDEX_op_smin_vec);
+    do_minmax(vece, r, a, b, INDEX_op_smin_vec, TCG_COND_LT);
 }
 
 void tcg_gen_umin_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
 {
-    do_op3_nofail(vece, r, a, b, INDEX_op_umin_vec);
+    do_minmax(vece, r, a, b, INDEX_op_umin_vec, TCG_COND_LTU);
 }
 
 void tcg_gen_smax_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
 {
-    do_op3_nofail(vece, r, a, b, INDEX_op_smax_vec);
+    do_minmax(vece, r, a, b, INDEX_op_smax_vec, TCG_COND_GT);
 }
 
 void tcg_gen_umax_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
 {
-    do_op3_nofail(vece, r, a, b, INDEX_op_umax_vec);
+    do_minmax(vece, r, a, b, INDEX_op_umax_vec, TCG_COND_GTU);
 }
 
 void tcg_gen_shlv_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
-- 
2.17.1



  parent reply	other threads:[~2019-05-22 22:30 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-22 22:28 [Qemu-devel] [PULL 00/16] tcg queued patches Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 01/16] tcg/i386: Fix dupi/dupm for avx1 and 32-bit hosts Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 02/16] tcg: Fix missing checks and clears in tcg_gen_gvec_dup_mem Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 03/16] tcg: Add support for vector bitwise select Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 04/16] tcg: Add support for vector compare select Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 05/16] tcg: Introduce do_op3_nofail for vector expansion Richard Henderson
2019-05-22 22:28 ` Richard Henderson [this message]
2019-05-22 22:28 ` [Qemu-devel] [PULL 07/16] tcg: Add TCG_OPF_NOT_PRESENT if TCG_TARGET_HAS_foo is negative Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 08/16] tcg/i386: Support vector comparison select value Richard Henderson
2019-05-30 11:26   ` Peter Maydell
2019-05-30 12:50     ` Richard Henderson
2019-05-30 14:54       ` Aleksandar Markovic
2019-05-30 17:45         ` Richard Henderson
2019-05-30 23:18           ` Aleksandar Markovic
2019-05-22 22:28 ` [Qemu-devel] [PULL 09/16] tcg/i386: Remove expansion for missing minmax Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 10/16] tcg/i386: Use umin/umax in expanding unsigned compare Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 11/16] tcg/aarch64: Support vector bitwise select value Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 12/16] tcg/aarch64: Split up is_fimm Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 13/16] tcg/aarch64: Use MVNI in tcg_out_dupi_vec Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 14/16] tcg/aarch64: Build vector immediates with two insns Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 15/16] tcg/aarch64: Allow immediates for vector ORR and BIC Richard Henderson
2019-05-22 22:28 ` [Qemu-devel] [PULL 16/16] tcg/i386: Use MOVDQA for TCG_TYPE_V128 load/store Richard Henderson
2019-05-28 17:28   ` David Hildenbrand
2019-05-28 18:33     ` David Hildenbrand
2019-05-28 18:46       ` David Hildenbrand
2019-05-28 21:34         ` Richard Henderson
2019-05-23  8:17 ` [Qemu-devel] [PULL 00/16] tcg queued patches Aleksandar Markovic
2019-05-23 12:42   ` Richard Henderson
2019-05-24 10:43 ` Peter Maydell
2019-05-28 16:58 ` David Hildenbrand

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