i386.md (movsf, movdf): Use movaps for reg-reg moves if TARGET_PARTIAL_REG_DEPENDENCY.

	* i386.md (movsf, movdf): Use movaps for reg-reg moves if
	TARGET_PARTIAL_REG_DEPENDENCY.
	(truncdfsf2_1_sse, truncdfsf2_2): Penalize the fpreg->mem case.

From-SVN: r40093

gcc/ChangeLog

+Tue Feb 27 15:51:35 CET 2001  Jan Hubicka  <jh@suse.cz>
+
+	* i386.md (movsf, movdf): Use movaps for reg-reg moves if
+	TARGET_PARTIAL_REG_DEPENDENCY.
+	(truncdfsf2_1_sse, truncdfsf2_2): Penalize the fpreg->mem case.
+
 Tue Feb 27 15:36:48 CET 2001  Jan Hubicka  <jh@suse.cz>
 
 	* i386.md (mins*, maxs*): New patterns, expanders and splitters.

gcc/config/i386/i386.md

@@ -2238,6 +2238,10 @@
       return \"mov{l}\\t{%1, %0|%0, %1}\";
     case 5:
     case 6:
+      if (TARGET_PARTIAL_REG_DEPENDENCY
+	  && register_operand (operands[0], VOIDmode)
+	  && register_operand (operands[1], VOIDmode))
+	return \"movaps\\t{%1, %0|%0, %1}\";
       return \"movss\\t{%1, %0|%0, %1}\";
 
     default:
@@ -2412,6 +2416,10 @@
       return \"#\";
     case 5:
     case 6:
+      if (TARGET_PARTIAL_REG_DEPENDENCY
+	  && register_operand (operands[0], VOIDmode)
+	  && register_operand (operands[1], VOIDmode))
+	return \"movapd\\t{%1, %0|%0, %1}\";
       return \"movsd\\t{%1, %0|%0, %1}\";
 
     default:
@@ -3626,7 +3634,7 @@
    (set_attr "mode" "SF,SF")])
 
 (define_insn "*truncdfsf2_1_sse"
-  [(set (match_operand:SF 0 "nonimmediate_operand" "=m,?f,Y")
+  [(set (match_operand:SF 0 "nonimmediate_operand" "=*!m,?f,Y")
 	(float_truncate:SF
 	 (match_operand:DF 1 "nonimmediate_operand" "f,0,mY")))
    (clobber (match_operand:SF 2 "memory_operand" "=X,m,X"))]
@@ -3652,26 +3660,26 @@
    (set_attr "mode" "SF,SF,DF")])
 
 (define_insn "*truncdfsf2_2"
-  [(set (match_operand:SF 0 "nonimmediate_operand" "=m,Y")
+  [(set (match_operand:SF 0 "nonimmediate_operand" "=Y,!m")
 	(float_truncate:SF
-	 (match_operand:DF 1 "nonimmediate_operand" "f,mY")))]
-  "TARGET_80387 && TARGET_SSE2"
+	 (match_operand:DF 1 "nonimmediate_operand" "mY,f")))]
+  "TARGET_80387 && TARGET_SSE2
+   && (GET_CODE (operands[0]) != MEM || GET_CODE (operands[1]) != MEM)"
   "*
 {
   switch (which_alternative)
     {
     case 0:
+      return \"cvtsd2ss\\t{%1, %0|%0, %1}\";
+    case 1:
       if (find_regno_note (insn, REG_DEAD, REGNO (operands[1])))
 	return \"fstp%z0\\t%y0\";
       else
 	return \"fst%z0\\t%y0\";
-    case 1:
-    case 2:
-      return \"cvtsd2ss\\t{%1, %0|%0, %1}\";
     }
 }"
-  [(set_attr "type" "fmov,sse")
-   (set_attr "mode" "SF,DF")])
+  [(set_attr "type" "sse,fmov")
+   (set_attr "mode" "DF,SF")])
 
 (define_insn "truncdfsf2_3"
   [(set (match_operand:SF 0 "nonimmediate_operand" "=m")