[PATCH 15/46] i386: Emulate MMX vec_dupv2si with SSE

[H.J. Lu]

Emulate MMX vec_dupv2si with SSE.  Only SSE register source operand is
allowed.

	PR target/89021
	* config/i386/mmx.md (*vec_dupv2si): Changed to
	define_insn_and_split to support SSE emulation.
	* config/i386/sse.md (*vec_dupv4si): Renamed to ...
	(vec_dupv4si): This.
---
 gcc/config/i386/mmx.md | 22 ++++++++++++++++------
 gcc/config/i386/sse.md |  2 +-
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/gcc/config/i386/mmx.md b/gcc/config/i386/mmx.md
index 87e7f7e3921..74efe680d9e 100644
--- a/gcc/config/i386/mmx.md
+++ b/gcc/config/i386/mmx.md
@@ -1388,14 +1388,24 @@
    (set_attr "length_immediate" "1")
    (set_attr "mode" "DI")])
 
-(define_insn "*vec_dupv2si"
-  [(set (match_operand:V2SI 0 "register_operand" "=y")
+(define_insn_and_split "*vec_dupv2si"
+  [(set (match_operand:V2SI 0 "register_operand" "=y,Yx,Yy")
 	(vec_duplicate:V2SI
-	  (match_operand:SI 1 "register_operand" "0")))]
-  "TARGET_MMX"
+	  (match_operand:SI 1 "register_operand" "0,0,Yy")))]
+  "TARGET_MMX_INSNS"
   "punpckldq\t%0, %0"
-  [(set_attr "type" "mmxcvt")
-   (set_attr "mode" "DI")])
+  "&& reload_completed && TARGET_MMX_WITH_SSE"
+  [(const_int 0)]
+{
+  /* Emulate MMX vec_dupv2si with SSE vec_dupv4si.  */
+  rtx op0 = gen_rtx_REG (V4SImode, REGNO (operands[0]));
+  rtx insn = gen_vec_dupv4si (op0, operands[1]);
+  emit_insn (insn);
+  DONE;
+}
+  [(set_attr "isa" "*,noavx,avx")
+   (set_attr "type" "mmxcvt,ssemov,ssemov")
+   (set_attr "mode" "DI,TI,TI")])
 
 (define_insn "*mmx_concatv2si"
   [(set (match_operand:V2SI 0 "register_operand"     "=y,y")
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index 5dc0930ac1f..7d2c0367911 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -18976,7 +18976,7 @@
    (set_attr "prefix" "maybe_evex,maybe_evex,orig")
    (set_attr "mode" "V4SF")])
 
-(define_insn "*vec_dupv4si"
+(define_insn "vec_dupv4si"
   [(set (match_operand:V4SI 0 "register_operand"     "=v,v,x")
 	(vec_duplicate:V4SI
 	  (match_operand:SI 1 "nonimmediate_operand" "Yv,m,0")))]
-- 
2.20.1