i386: Add ssse3_pmulhrswv4hi3 expander

There is no V4HI pmulhrsw in AVX512BW and V4HI/V8HI pmulhrsw don't require
AVX2.

	PR target/89372
	* config/i386/sse.md (ssedoublemode): Remove V4HI.
	(PMULHRSW): Likewise.
	(<ssse3_avx2>_pmulhrsw<mode>3): Require TARGET_SSSE3, not
	TARGET_AVX2.
	(ssse3_pmulhrswv4hi3): New expander.

From-SVN: r268964

gcc/ChangeLog

 2019-02-16  H.J. Lu  <hongjiu.lu@intel.com>
 
+	PR target/89372
+	* config/i386/sse.md (ssedoublemode): Remove V4HI.
+	(PMULHRSW): Likewise.
+	(<ssse3_avx2>_pmulhrsw<mode>3): Require TARGET_SSSE3, not
+	TARGET_AVX2.
+	(ssse3_pmulhrswv4hi3): New expander.
+
+2019-02-16  H.J. Lu  <hongjiu.lu@intel.com>
+
 	* config/i386/mmx.md (*vec_extractv2si_zext_mem): Doesn't require
 	MMX.  Add isa attribute.
 

gcc/config/i386/sse.md

@@ -596,7 +596,7 @@
   [(V4SF "V8SF") (V8SF "V16SF") (V16SF "V32SF")
    (V2DF "V4DF") (V4DF "V8DF") (V8DF "V16DF")
    (V16QI "V16HI") (V32QI "V32HI") (V64QI "V64HI")
-   (V4HI "V4SI") (V8HI "V8SI") (V16HI "V16SI") (V32HI "V32SI")
+   (V8HI "V8SI") (V16HI "V16SI") (V32HI "V32SI")
    (V4SI "V4DI") (V8SI "V16SI") (V16SI "V32SI")
    (V4DI "V8DI") (V8DI "V16DI")])
 
@@ -15590,7 +15590,7 @@
    (set_attr "mode" "DI")])
 
 (define_mode_iterator PMULHRSW
-  [V4HI V8HI (V16HI "TARGET_AVX2")])
+  [V8HI (V16HI "TARGET_AVX2")])
 
 (define_expand "<ssse3_avx2>_pmulhrsw<mode>3_mask"
   [(set (match_operand:PMULHRSW 0 "register_operand")
@@ -15629,7 +15629,7 @@
 		(const_int 14))
 	      (match_dup 3))
 	    (const_int 1))))]
-  "TARGET_AVX2"
+  "TARGET_SSSE3"
 {
   operands[3] = CONST1_RTX(<MODE>mode);
   ix86_fixup_binary_operands_no_copy (MULT, <MODE>mode, operands);
@@ -15662,6 +15662,26 @@
    (set_attr "prefix" "orig,maybe_evex,evex")
    (set_attr "mode" "<sseinsnmode>")])
 
+(define_expand "ssse3_pmulhrswv4hi3"
+  [(set (match_operand:V4HI 0 "register_operand")
+	(truncate:V4HI
+	  (lshiftrt:V4SI
+	    (plus:V4SI
+	      (lshiftrt:V4SI
+		(mult:V4SI
+		  (sign_extend:V4SI
+		    (match_operand:V4HI 1 "nonimmediate_operand"))
+		  (sign_extend:V4SI
+		    (match_operand:V4HI 2 "nonimmediate_operand")))
+		(const_int 14))
+	      (match_dup 3))
+	    (const_int 1))))]
+  "TARGET_SSSE3"
+{
+  operands[3] = CONST1_RTX(V4HImode);
+  ix86_fixup_binary_operands_no_copy (MULT, V4HImode, operands);
+})
+
 (define_insn "*ssse3_pmulhrswv4hi3"
   [(set (match_operand:V4HI 0 "register_operand" "=y")
 	(truncate:V4HI