[22/43] i386: Emulate MMX mmx_uavgv8qi3 with SSE

Message ID 20190209132352.1828-23-hjl.tools@gmail.com
State New
Headers show
Series
  • V2: Emulate MMX intrinsics with SSE
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Commit Message

H.J. Lu Feb. 9, 2019, 1:23 p.m.
Emulate MMX mmx_uavgv8qi3 with SSE.  Only SSE register source operand is
allowed.

	PR target/89021
	* config/i386/mmx.md (*mmx_uavgv8qi3): Add SSE emulation.
---
 gcc/config/i386/mmx.md | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

-- 
2.20.1

Patch

diff --git a/gcc/config/i386/mmx.md b/gcc/config/i386/mmx.md
index c758aac72e5..17776c66d90 100644
--- a/gcc/config/i386/mmx.md
+++ b/gcc/config/i386/mmx.md
@@ -1679,15 +1679,15 @@ 
   "ix86_fixup_binary_operands_no_copy (PLUS, V8QImode, operands);")
 
 (define_insn "*mmx_uavgv8qi3"
-  [(set (match_operand:V8QI 0 "register_operand" "=y")
+  [(set (match_operand:V8QI 0 "register_operand" "=y,Yx,Yy")
 	(truncate:V8QI
 	  (lshiftrt:V8HI
 	    (plus:V8HI
 	      (plus:V8HI
 		(zero_extend:V8HI
-		  (match_operand:V8QI 1 "nonimmediate_operand" "%0"))
+		  (match_operand:V8QI 1 "nonimmediate_operand" "%0,0,Yy"))
 		(zero_extend:V8HI
-		  (match_operand:V8QI 2 "nonimmediate_operand" "ym")))
+		  (match_operand:V8QI 2 "nonimmediate_operand" "ym,Yx,Yy")))
 	      (const_vector:V8HI [(const_int 1) (const_int 1)
 				  (const_int 1) (const_int 1)
 				  (const_int 1) (const_int 1)
@@ -1698,19 +1698,22 @@ 
 {
   /* These two instructions have the same operation, but their encoding
      is different.  Prefer the one that is de facto standard.  */
-  if (TARGET_SSE || TARGET_3DNOW_A)
+  if (TARGET_MMX_WITH_SSE && TARGET_AVX)
+    return "vpavgb\t{%2, %1, %0|%0, %1, %2}";
+  else if (TARGET_SSE || TARGET_3DNOW_A)
     return "pavgb\t{%2, %0|%0, %2}";
   else
     return "pavgusb\t{%2, %0|%0, %2}";
 }
-  [(set_attr "type" "mmxshft")
+  [(set_attr "mmx_isa" "native,x64_noavx,x64_avx")
+   (set_attr "type" "mmxshft,sseiadd,sseiadd")
    (set (attr "prefix_extra")
      (if_then_else
        (not (ior (match_test "TARGET_SSE")
 		 (match_test "TARGET_3DNOW_A")))
        (const_string "1")
        (const_string "*")))
-   (set_attr "mode" "DI")])
+   (set_attr "mode" "DI,TI,TI")])
 
 (define_expand "mmx_uavgv4hi3"
   [(set (match_operand:V4HI 0 "register_operand")