sse.md (*avx2_pmaddwd, [...]): Use v instead of x in vex or maybe_vex alternatives...

	* config/i386/sse.md (*avx2_pmaddwd, *sse2_pmaddwd): Use
	v instead of x in vex or maybe_vex alternatives, use
	maybe_evex instead of vex in prefix.

	* gcc.target/i386/avx512bw-vpmaddwd-3.c: New test.

From-SVN: r235971

gcc/ChangeLog

 2016-05-06  Jakub Jelinek  <jakub@redhat.com>
 
+	* config/i386/sse.md (*avx2_pmaddwd, *sse2_pmaddwd): Use
+	v instead of x in vex or maybe_vex alternatives, use
+	maybe_evex instead of vex in prefix.
+
 	* config/i386/sse.md (*vec_extractv4sf_0, *sse4_1_extractps,
 	*vec_extractv4sf_mem, vec_extract_lo_v16hi, vec_extract_hi_v16hi,
 	vec_extract_lo_v32qi, vec_extract_hi_v32qi): Use v instead of x

gcc/config/i386/sse.md

@@ -9817,19 +9817,19 @@
   "ix86_fixup_binary_operands_no_copy (MULT, V16HImode, operands);")
 
 (define_insn "*avx2_pmaddwd"
-  [(set (match_operand:V8SI 0 "register_operand" "=x")
+  [(set (match_operand:V8SI 0 "register_operand" "=x,v")
 	(plus:V8SI
 	  (mult:V8SI
 	    (sign_extend:V8SI
 	      (vec_select:V8HI
-		(match_operand:V16HI 1 "nonimmediate_operand" "%x")
+		(match_operand:V16HI 1 "nonimmediate_operand" "%x,v")
 		(parallel [(const_int 0) (const_int 2)
 			   (const_int 4) (const_int 6)
 			   (const_int 8) (const_int 10)
 			   (const_int 12) (const_int 14)])))
 	    (sign_extend:V8SI
 	      (vec_select:V8HI
-		(match_operand:V16HI 2 "nonimmediate_operand" "xm")
+		(match_operand:V16HI 2 "nonimmediate_operand" "xm,vm")
 		(parallel [(const_int 0) (const_int 2)
 			   (const_int 4) (const_int 6)
 			   (const_int 8) (const_int 10)
@@ -9850,7 +9850,8 @@
   "TARGET_AVX2 && ix86_binary_operator_ok (MULT, V16HImode, operands)"
   "vpmaddwd\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "type" "sseiadd")
-   (set_attr "prefix" "vex")
+   (set_attr "isa" "*,avx512bw")
+   (set_attr "prefix" "vex,evex")
    (set_attr "mode" "OI")])
 
 (define_expand "sse2_pmaddwd"
@@ -9880,17 +9881,17 @@
   "ix86_fixup_binary_operands_no_copy (MULT, V8HImode, operands);")
 
 (define_insn "*sse2_pmaddwd"
-  [(set (match_operand:V4SI 0 "register_operand" "=x,x")
+  [(set (match_operand:V4SI 0 "register_operand" "=x,x,v")
 	(plus:V4SI
 	  (mult:V4SI
 	    (sign_extend:V4SI
 	      (vec_select:V4HI
-		(match_operand:V8HI 1 "vector_operand" "%0,x")
+		(match_operand:V8HI 1 "vector_operand" "%0,x,v")
 		(parallel [(const_int 0) (const_int 2)
 			   (const_int 4) (const_int 6)])))
 	    (sign_extend:V4SI
 	      (vec_select:V4HI
-		(match_operand:V8HI 2 "vector_operand" "xBm,xm")
+		(match_operand:V8HI 2 "vector_operand" "xBm,xm,vm")
 		(parallel [(const_int 0) (const_int 2)
 			   (const_int 4) (const_int 6)]))))
 	  (mult:V4SI
@@ -9905,12 +9906,13 @@
   "TARGET_SSE2 && ix86_binary_operator_ok (MULT, V8HImode, operands)"
   "@
    pmaddwd\t{%2, %0|%0, %2}
+   vpmaddwd\t{%2, %1, %0|%0, %1, %2}
    vpmaddwd\t{%2, %1, %0|%0, %1, %2}"
-  [(set_attr "isa" "noavx,avx")
+  [(set_attr "isa" "noavx,avx,avx512bw")
    (set_attr "type" "sseiadd")
    (set_attr "atom_unit" "simul")
-   (set_attr "prefix_data16" "1,*")
-   (set_attr "prefix" "orig,vex")
+   (set_attr "prefix_data16" "1,*,*")
+   (set_attr "prefix" "orig,vex,evex")
    (set_attr "mode" "TI")])
 
 (define_insn "avx512dq_mul<mode>3<mask_name>"

gcc/testsuite/ChangeLog

+2016-05-06  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.target/i386/avx512bw-vpmaddwd-3.c: New test.
+
 2016-05-06  Yuri Rumyantsev  <ysrumyan@gmail.com>
 
 	PR debug/70935

gcc/testsuite/gcc.target/i386/avx512bw-vpmaddwd-3.c

+/* { dg-do assemble { target { avx512bw && { avx512vl && { ! ia32 } } } } } */
+/* { dg-options "-O2 -mavx512bw -mavx512vl" } */
+
+#include <x86intrin.h>
+
+void
+f1 (__m128i x, __m128i y)
+{
+  register __m128i a __asm ("xmm16"), b __asm ("xmm17");
+  a = x; b = y;
+  asm volatile ("" : "+v" (a), "+v" (b));
+  a = _mm_madd_epi16 (a, b);
+  asm volatile ("" : "+v" (a));
+}
+
+void
+f2 (__m256i x, __m256i y)
+{
+  register __m256i a __asm ("xmm16"), b __asm ("xmm17");
+  a = x; b = y;
+  asm volatile ("" : "+v" (a), "+v" (b));
+  a = _mm256_madd_epi16 (a, b);
+  asm volatile ("" : "+v" (a));
+}