Some SSE fixes

From-SVN: r47096

gcc/ChangeLog

+2001-11-16  Bernd Schmidt  <bernds@redhat.com>
+
+        * config/i386/i386.c (ix86_expand_sse_comi): Generate setcc by
+	hand; don't use gen_setcc_2.
+	(ix86_expand_builtin): Fix pshufw.
+	* config/i386/i386.md (maskncmpv4sf3, vmmmaskncmpv4sf3): Special
+        case UNORDERED to emit the right assembler instruction.
+	(mmx_pshufw): Lose operand 2.
+	(cvtsi2ss): Fix representation.
+	From Graham Stott:
+	(mmx_clrdi, sse_clrti, stmxcsr, ldmxcsr): Set memory attribute.
+
 2001-11-16  Joseph S. Myers  <jsm28@cam.ac.uk>
 
 	* doc/include/linux-and-gnu.texi: Remove.

gcc/config/i386/i386.c

@@ -11648,7 +11648,11 @@ ix86_expand_sse_comi (d, arglist, target)
   if (! pat)
     return 0;
   emit_insn (pat);
-  emit_insn (gen_setcc_2 (target, op2));
+  emit_insn (gen_rtx_SET (VOIDmode,
+			  gen_rtx_STRICT_LOW_PART (VOIDmode, target),
+			  gen_rtx_fmt_ee (comparison, QImode,
+					  gen_rtx_REG (CCmode, FLAGS_REG),
+					  const0_rtx)));
 
   return target;
 }
@@ -11936,12 +11940,12 @@ ix86_expand_builtin (exp, target, subtarget, mode, ignore)
       op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0);
       op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0);
       tmode = insn_data[icode].operand[0].mode;
-      mode0 = insn_data[icode].operand[2].mode;
-      mode1 = insn_data[icode].operand[3].mode;
+      mode1 = insn_data[icode].operand[1].mode;
+      mode2 = insn_data[icode].operand[2].mode;
 
-      if (! (*insn_data[icode].operand[1].predicate) (op0, mode0))
-	op0 = copy_to_mode_reg (mode0, op0);
-      if (! (*insn_data[icode].operand[3].predicate) (op1, mode1))
+      if (! (*insn_data[icode].operand[1].predicate) (op0, mode1))
+	op0 = copy_to_mode_reg (mode1, op0);
+      if (! (*insn_data[icode].operand[2].predicate) (op1, mode2))
 	{
 	  /* @@@ better error message */
 	  error ("mask must be an immediate");
@@ -11951,7 +11955,7 @@ ix86_expand_builtin (exp, target, subtarget, mode, ignore)
 	  || GET_MODE (target) != tmode
 	  || ! (*insn_data[icode].operand[0].predicate) (target, tmode))
 	target = gen_reg_rtx (tmode);
-      pat = GEN_FCN (icode) (target, target, op0, op1);
+      pat = GEN_FCN (icode) (target, op0, op1);
       if (! pat)
 	return 0;
       emit_insn (pat);

gcc/config/i386/i386.md

@@ -18454,8 +18454,8 @@
         (unspec:TI [(const_int 0)] 45))]
   "TARGET_SSE"
   "xorps\t{%0, %0|%0, %0}"
-  [(set_attr "type" "sse")])
-
+  [(set_attr "type" "sse")
+   (set_attr "memory" "none")])
 
 ;; SSE mask-generating compares
 
@@ -18475,7 +18475,13 @@
 			      [(match_operand:V4SF 1 "register_operand" "0")
 			       (match_operand:V4SF 2 "nonimmediate_operand" "x")])))]
   "TARGET_SSE"
-  "cmpn%D3ps\t{%2, %0|%0, %2}"
+  "*
+{
+  if (GET_CODE (operands[3]) == UNORDERED)
+    return \"cmpordps\t{%2, %0|%0, %2}\";
+
+  return \"cmpn%D3ps\t{%2, %0|%0, %2}\";
+}"
   [(set_attr "type" "sse")])
 
 (define_insn "vmmaskcmpv4sf3"
@@ -18500,7 +18506,13 @@
 	 (subreg:V4SI (match_dup 1) 0)
 	 (const_int 1)))]
   "TARGET_SSE"
-  "cmp%D3ss\t{%2, %0|%0, %2}"
+  "*
+{
+  if (GET_CODE (operands[3]) == UNORDERED)
+    return \"cmpordss\t{%2, %0|%0, %2}\";
+
+  return \"cmpn%D3ss\t{%2, %0|%0, %2}\";
+}"
   [(set_attr "type" "sse")])
 
 (define_insn "sse_comi"
@@ -18645,7 +18657,7 @@
 	(vec_merge:V4SF (match_operand:V4SF 1 "register_operand" "0")
 	 		(vec_duplicate:V4SF
 			 (float:SF (match_operand:SI 2 "register_operand" "rm")))
-			(const_int 15)))]
+			(const_int 14)))]
   "TARGET_SSE"
   "cvtsi2ss\t{%2, %0|%0, %2}"
   [(set_attr "type" "sse")])
@@ -18855,7 +18867,8 @@
 		  (match_operand:DI 2 "nonimmediate_operand" "ym"))] 45))]
   "TARGET_MMX"
   "pxor\t{%2, %0|%0, %2}"
-  [(set_attr "type" "mmx")])
+  [(set_attr "type" "mmx")
+   (set_attr "memory" "none")])
 
 ;; Same as pxor, but don't show input operands so that we don't think
 ;; they are live.
@@ -18954,10 +18967,9 @@
 (define_insn "mmx_pshufw"
   [(set (match_operand:V4HI 0 "register_operand" "=y")
         (unspec:V4HI [(match_operand:V4HI 1 "register_operand" "0")
-		      (match_operand:V4HI 2 "nonimmediate_operand" "ym")
-		      (match_operand:SI 3 "immediate_operand" "i")] 41))]
+		      (match_operand:SI 2 "immediate_operand" "i")] 41))]
   "TARGET_SSE || TARGET_3DNOW_A"
-  "pshufw\t{%3, %2, %0|%0, %2, %3}"
+  "pshufw\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "type" "sse")])
 
 
@@ -19293,14 +19305,16 @@
   [(unspec_volatile [(match_operand:SI 0 "memory_operand" "m")] 37)]
   "TARGET_MMX"
   "ldmxcsr\t%0"
-  [(set_attr "type" "mmx")])
+  [(set_attr "type" "mmx")
+   (set_attr "memory" "load")])
 
 (define_insn "stmxcsr"
   [(set (match_operand:SI 0 "memory_operand" "=m")
 	(unspec_volatile:SI [(const_int 0)] 40))]
   "TARGET_MMX"
   "stmxcsr\t%0"
-  [(set_attr "type" "mmx")])
+  [(set_attr "type" "mmx")
+   (set_attr "memory" "store")])
 
 (define_expand "sfence"
   [(set (match_dup 0)