From: H.J. Lu <hongjiu.lu@intel.com>
Date: Wed, 15 May 2019 15:11:07 +0000 (+0000)
Subject: i386: Emulate MMX vec_dupv2si with SSE
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=74e299b9299a03ddf44cfa7f0660c908c3257dfc;p=gcc.git

i386: Emulate MMX vec_dupv2si with SSE

Emulate MMX vec_dupv2si with SSE.  Add the "Yw" constraint to allow
broadcast from integer register for AVX512BW with TARGET_AVX512VL.
Only SSE register source operand is allowed.

	PR target/89021
	* config/i386/constraints.md (Yw): New constraint.
	* config/i386/mmx.md (*vec_dupv2si): Changed to
	define_insn_and_split and also allow TARGET_MMX_WITH_SSE to
	support SSE emulation.

From-SVN: r271225
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 856ff3cab86..4d2080fef99 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2019-05-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/89021
+	* config/i386/constraints.md (Yw): New constraint.
+	* config/i386/mmx.md (*vec_dupv2si): Changed to
+	define_insn_and_split and also allow TARGET_MMX_WITH_SSE to
+	support SSE emulation.
+
 2019-05-15  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR target/89021
diff --git a/gcc/config/i386/constraints.md b/gcc/config/i386/constraints.md
index 16075b4acf3..c546b20d9dc 100644
--- a/gcc/config/i386/constraints.md
+++ b/gcc/config/i386/constraints.md
@@ -110,6 +110,8 @@
 ;;  v	any EVEX encodable SSE register for AVX512VL target,
 ;;	otherwise any SSE register
 ;;  h	EVEX encodable SSE register with number factor of four
+;;  w	any EVEX encodable SSE register for AVX512BW with TARGET_AVX512VL
+;;	target.
 
 (define_register_constraint "Yz" "TARGET_SSE ? SSE_FIRST_REG : NO_REGS"
  "First SSE register (@code{%xmm0}).")
@@ -146,6 +148,10 @@
  "TARGET_AVX512VL ? ALL_SSE_REGS : TARGET_SSE ? SSE_REGS : NO_REGS"
  "@internal For AVX512VL, any EVEX encodable SSE register (@code{%xmm0-%xmm31}), otherwise any SSE register.")
 
+(define_register_constraint "Yw"
+ "TARGET_AVX512BW && TARGET_AVX512VL ? ALL_SSE_REGS : NO_REGS"
+ "@internal Any EVEX encodable SSE register (@code{%xmm0-%xmm31}) for AVX512BW with TARGET_AVX512VL target.")
+
 ;; We use the B prefix to denote any number of internal operands:
 ;;  f  FLAGS_REG
 ;;  g  GOT memory operand.
diff --git a/gcc/config/i386/mmx.md b/gcc/config/i386/mmx.md
index c1f0b0cfe3f..80859d59140 100644
--- a/gcc/config/i386/mmx.md
+++ b/gcc/config/i386/mmx.md
@@ -1406,14 +1406,24 @@
    (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,x,Yv,Yw")
 	(vec_duplicate:V2SI
-	  (match_operand:SI 1 "register_operand" "0")))]
-  "TARGET_MMX"
-  "punpckldq\t%0, %0"
-  [(set_attr "type" "mmxcvt")
-   (set_attr "mode" "DI")])
+	  (match_operand:SI 1 "register_operand" "0,0,Yv,r")))]
+  "TARGET_MMX || TARGET_MMX_WITH_SSE"
+  "@
+   punpckldq\t%0, %0
+   #
+   #
+   #"
+  "TARGET_MMX_WITH_SSE && reload_completed"
+  [(set (match_dup 0)
+	(vec_duplicate:V4SI (match_dup 1)))]
+  "operands[0] = lowpart_subreg (V4SImode, operands[0],
+				 GET_MODE (operands[0]));"
+  [(set_attr "mmx_isa" "native,x64_noavx,x64_avx,x64_avx")
+   (set_attr "type" "mmxcvt,ssemov,ssemov,ssemov")
+   (set_attr "mode" "DI,TI,TI,TI")])
 
 (define_insn "*mmx_concatv2si"
   [(set (match_operand:V2SI 0 "register_operand"     "=y,y")