[30/42] i386: Emulate MMX ssse3_ph<plusminus_mnemonic>dv2si3 with SSE

Message ID 20190215135812.32306-31-hjl.tools@gmail.com
State Superseded
Headers show
Series
  • V6: Emulate MMX intrinsics with SSE
Related show

Commit Message

H.J. Lu Feb. 15, 2019, 1:58 p.m.
Emulate MMX ssse3_ph<plusminus_mnemonic>dv2si3 with SSE by moving bits
64:95 to bits 32:63 in SSE register.  Only SSE register source operand
is allowed.

	PR target/89021
	* config/i386/sse.md (ssse3_ph<plusminus_mnemonic>dv2si3):
	Changed to define_insn_and_split to support SSE emulation.
---
 gcc/config/i386/sse.md | 34 ++++++++++++++++++++++++++--------
 1 file changed, 26 insertions(+), 8 deletions(-)

-- 
2.20.1

Patch

diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index 1c31a1fbad0..cb4a1c9fc59 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -15356,26 +15356,44 @@ 
    (set_attr "prefix" "orig,vex")
    (set_attr "mode" "TI")])
 
-(define_insn "ssse3_ph<plusminus_mnemonic>dv2si3"
-  [(set (match_operand:V2SI 0 "register_operand" "=y")
+(define_insn_and_split "ssse3_ph<plusminus_mnemonic>dv2si3"
+  [(set (match_operand:V2SI 0 "register_operand" "=y,x,Yv")
 	(vec_concat:V2SI
 	  (plusminus:SI
 	    (vec_select:SI
-	      (match_operand:V2SI 1 "register_operand" "0")
+	      (match_operand:V2SI 1 "register_operand" "0,0,Yv")
 	      (parallel [(const_int 0)]))
 	    (vec_select:SI (match_dup 1) (parallel [(const_int 1)])))
 	  (plusminus:SI
 	    (vec_select:SI
-	      (match_operand:V2SI 2 "nonimmediate_operand" "ym")
+	      (match_operand:V2SI 2 "nonimmediate_operand" "ym,x,Yv")
 	      (parallel [(const_int 0)]))
 	    (vec_select:SI (match_dup 2) (parallel [(const_int 1)])))))]
-  "TARGET_SSSE3"
-  "ph<plusminus_mnemonic>d\t{%2, %0|%0, %2}"
-  [(set_attr "type" "sseiadd")
+  "(TARGET_MMX || TARGET_MMX_WITH_SSE) && TARGET_SSSE3"
+  "@
+   ph<plusminus_mnemonic>d\t{%2, %0|%0, %2}
+   #
+   #"
+  "TARGET_MMX_WITH_SSE && reload_completed"
+  [(const_int 0)]
+{
+  /* Generate SSE version of the operation.  */
+  rtx op0 = lowpart_subreg (V4SImode, operands[0],
+			    GET_MODE (operands[0]));
+  rtx op1 = lowpart_subreg (V4SImode, operands[1],
+			    GET_MODE (operands[1]));
+  rtx op2 = lowpart_subreg (V4SImode, operands[2],
+			    GET_MODE (operands[2]));
+  emit_insn (gen_ssse3_ph<plusminus_mnemonic>dv4si3 (op0, op1, op2));
+  ix86_move_vector_high_sse_to_mmx (op0);
+  DONE;
+}
+  [(set_attr "mmx_isa" "native,x64_noavx,x64_avx")
+   (set_attr "type" "sseiadd")
    (set_attr "atom_unit" "complex")
    (set_attr "prefix_extra" "1")
    (set (attr "prefix_rex") (symbol_ref "x86_extended_reg_mentioned_p (insn)"))
-   (set_attr "mode" "DI")])
+   (set_attr "mode" "DI,TI,TI")])
 
 (define_insn "avx2_pmaddubsw256"
   [(set (match_operand:V16HI 0 "register_operand" "=x,v")