i386.md (floatunssi<mode>2 expand): Add new expand for QI/HImode operand to…

i386.md (floatunssi<mode>2 expand): Add new expand for QI/HImode operand to produce more effictive code for...

        * config/i386/i386.md (floatunssi<mode>2 expand): Add new
        expand for QI/HImode operand to produce more effictive code for
        unsigned char(short) --> float(double) conversion.

From-SVN: r201663

gcc/ChangeLog

+2013-08-12  Yuri Rumyantsev  <ysrumyan@gmail.com>
+
+	* config/i386/i386.md (floatunssi<mode>2 expand): Add new
+	expand for QI/HImode operand to produce more effictive code for
+	unsigned char(short) --> float(double) conversion.
+
 2013-08-12  Alexander Monakov  <amonakov@ispras.ru>
 
 	* doc/invoke.texi: Mention that -ftls-model does not force the final

gcc/config/i386/i386.md

@@ -5037,6 +5037,18 @@
    && reload_completed"
   [(set (match_dup 0) (float:X87MODEF (match_dup 1)))])
 
+(define_expand "floatuns<SWI12:mode><X87MODEF:mode>2"
+  [(set (match_operand:X87MODEF 0 "register_operand")
+	(unsigned_float:X87MODEF
+	  (match_operand:SWI12 1 "nonimmediate_operand")))]
+  "!TARGET_64BIT
+   && SSE_FLOAT_MODE_P (<X87MODEF:MODE>mode) && TARGET_SSE_MATH"
+{
+  operands[1] = convert_to_mode (SImode, operands[1], 1);
+  emit_insn (gen_floatsi<X87MODEF:mode>2 (operands[0], operands[1]));
+  DONE;
+})
+
 ;; Avoid store forwarding (partial memory) stall penalty by extending
 ;; SImode value to DImode through XMM register instead of pushing two
 ;; SImode values to stack. Note that even !TARGET_INTER_UNIT_MOVES_TO_VEC