[PATCH 25/40] i386: Emulate MMX movntq with SSE2 movntidi

[H.J. Lu]

Emulate MMX movntq with SSE2 movntidi.  Only SSE register source operand
is allowed.

	PR target/89021
	* config/i386/mmx.md (sse_movntq): Renamed to ...
	(*sse_movntq): This.  Require TARGET_MMX and disallow
	TARGET_MMX_WITH_SSE.
	(sse_movntq): New.  Emulate MMX movntq with SSE2 movntidi.
---
 gcc/config/i386/mmx.md | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/gcc/config/i386/mmx.md b/gcc/config/i386/mmx.md
index b3048a6a3b8..2efa663b3e2 100644
--- a/gcc/config/i386/mmx.md
+++ b/gcc/config/i386/mmx.md
@@ -238,11 +238,26 @@
   DONE;
 })
 
-(define_insn "sse_movntq"
+(define_expand "sse_movntq"
+  [(set (match_operand:DI 0 "memory_operand")
+	(unspec:DI [(match_operand:DI 1 "register_operand")]
+		   UNSPEC_MOVNTQ))]
+  "(TARGET_MMX || TARGET_MMX_WITH_SSE)
+   && (TARGET_SSE || TARGET_3DNOW_A)"
+{
+  if (TARGET_MMX_WITH_SSE)
+    {
+      rtx insn = gen_sse2_movntidi (operands[0], operands[1]);
+      emit_insn (insn);
+      DONE;
+    }
+})
+
+(define_insn "*sse_movntq"
   [(set (match_operand:DI 0 "memory_operand" "=m")
 	(unspec:DI [(match_operand:DI 1 "register_operand" "y")]
 		   UNSPEC_MOVNTQ))]
-  "TARGET_SSE || TARGET_3DNOW_A"
+  "TARGET_MMX && !TARGET_MMX_WITH_SSE && (TARGET_SSE || TARGET_3DNOW_A)"
   "movntq\t{%1, %0|%0, %1}"
   [(set_attr "type" "mmxmov")
    (set_attr "mode" "DI")])
-- 
2.20.1