re PR target/43869 (ms_abi -> sysv_abi passing float arguments incorrectly)

2010-05-23  Naarten Lankhorst  <mlankhorst@codeweavers.com>

        PR target/43869
        * config/i386/i386.c: Make sure that the correct regparm is passed.

From-SVN: r159755

gcc/ChangeLog

+2010-05-23  Naarten Lankhorst  <mlankhorst@codeweavers.com>
+
+	PR target/43869
+	* config/i386/i386.c: Make sure that the correct regparm is passed.
+
 2010-05-23  Steven Bosscher  <steven@gcc.gnu.org>
 
 	* sbitmap.h (sbitmap_ptr, const_sbitmap_ptr): Move from here...

gcc/config/i386/i386.c

@@ -5061,19 +5061,18 @@ init_cumulative_args (CUMULATIVE_ARGS *cum,  /* Argument info to initialize */
   cum->nregs = ix86_regparm;
   if (TARGET_64BIT)
     {
-      if (cum->call_abi != ix86_abi)
-        cum->nregs = (ix86_abi != SYSV_ABI
-		      ? X86_64_REGPARM_MAX : X86_64_MS_REGPARM_MAX);
+      cum->nregs = (cum->call_abi == SYSV_ABI
+                   ? X86_64_REGPARM_MAX
+                   : X86_64_MS_REGPARM_MAX);
     }
   if (TARGET_SSE)
     {
       cum->sse_nregs = SSE_REGPARM_MAX;
       if (TARGET_64BIT)
         {
-          if (cum->call_abi != ix86_abi)
-            cum->sse_nregs = (ix86_abi != SYSV_ABI
-			      ? X86_64_SSE_REGPARM_MAX
-			      : X86_64_MS_SSE_REGPARM_MAX);
+          cum->sse_nregs = (cum->call_abi == SYSV_ABI
+                           ? X86_64_SSE_REGPARM_MAX
+                           : X86_64_MS_SSE_REGPARM_MAX);
         }
     }
   if (TARGET_MMX)
@@ -6191,11 +6190,7 @@ function_arg_64 (CUMULATIVE_ARGS *cum, enum machine_mode mode,
   if (mode == VOIDmode)
     return GEN_INT (cum->maybe_vaarg
 		    ? (cum->sse_nregs < 0
-		       ? (cum->call_abi == ix86_abi
-			  ? SSE_REGPARM_MAX
-			  : (ix86_abi != SYSV_ABI
-			     ? X86_64_SSE_REGPARM_MAX
-			     : X86_64_MS_SSE_REGPARM_MAX))
+		       ? X86_64_SSE_REGPARM_MAX
 		       : cum->sse_regno)
 		    : -1);
 
@@ -6899,11 +6894,6 @@ setup_incoming_varargs_64 (CUMULATIVE_ARGS *cum)
   rtx nsse_reg;
   alias_set_type set;
   int i;
-  int regparm = ix86_regparm;
-
-  if (cum->call_abi != ix86_abi)
-    regparm = (ix86_abi != SYSV_ABI
-	       ? X86_64_REGPARM_MAX : X86_64_MS_REGPARM_MAX);
 
   /* GPR size of varargs save area.  */
   if (cfun->va_list_gpr_size)
@@ -6925,7 +6915,7 @@ setup_incoming_varargs_64 (CUMULATIVE_ARGS *cum)
   set = get_varargs_alias_set ();
 
   for (i = cum->regno;
-       i < regparm
+       i < X86_64_REGPARM_MAX
        && i < cum->regno + cfun->va_list_gpr_size / UNITS_PER_WORD;
        i++)
     {