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[PULL,2/4] tcg/i386: fix unsigned vector saturating arithmetic

Message ID 20190211170136.18680-3-richard.henderson@linaro.org
State Accepted
Commit 3115584d39afe8cf2a84a40549029f53792abca5
Headers show
Series tcg queued patches | expand

Commit Message

Richard Henderson Feb. 11, 2019, 5:01 p.m. UTC 
From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>


Due to a cut/paste error in the original implementation, the unsigned
vector saturating arithmetic was erroneously being calculated as signed
vector saturating arithmetic.

Fixes: 8ffafbcec2 ("tcg/i386: Implement vector saturating arithmetic")
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>

Message-Id: <20190207224258.426-1-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 tcg/i386/tcg-target.inc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

-- 
2.17.2
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Patch

diff --git a/tcg/i386/tcg-target.inc.c b/tcg/i386/tcg-target.inc.c
index 4d84aea3a9..e0670e5098 100644
--- a/tcg/i386/tcg-target.inc.c
+++ b/tcg/i386/tcg-target.inc.c
@@ -2615,7 +2615,7 @@  static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
         OPC_PADDSB, OPC_PADDSW, OPC_UD2, OPC_UD2
     };
     static int const usadd_insn[4] = {
-        OPC_PADDSB, OPC_PADDSW, OPC_UD2, OPC_UD2
+        OPC_PADDUB, OPC_PADDUW, OPC_UD2, OPC_UD2
     };
     static int const sub_insn[4] = {
         OPC_PSUBB, OPC_PSUBW, OPC_PSUBD, OPC_PSUBQ
@@ -2624,7 +2624,7 @@  static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
         OPC_PSUBSB, OPC_PSUBSW, OPC_UD2, OPC_UD2
     };
     static int const ussub_insn[4] = {
-        OPC_PSUBSB, OPC_PSUBSW, OPC_UD2, OPC_UD2
+        OPC_PSUBUB, OPC_PSUBUW, OPC_UD2, OPC_UD2
     };
     static int const mul_insn[4] = {
         OPC_UD2, OPC_PMULLW, OPC_PMULLD, OPC_UD2