re PR target/22223 (New testsuite failure on Tru64 UNIX V5.1B: gcc.c-torture/compile/20050622-1.c)

	PR target/22223
	* config/alpha/alpha.c (alpha_start_function): Don't emit stack
	frame information for frames larger than 512 Kbytes on Tru64 when
	using the native assembler.

From-SVN: r116895

gcc/ChangeLog

 2006-09-12  Roger Sayle  <roger@eyesopen.com>
 
+	PR target/22223
+	* config/alpha/alpha.c (alpha_start_function): Don't emit stack
+	frame information for frames larger than 512 Kbytes on Tru64 when
+	using the native assembler.
+
+2006-09-12  Roger Sayle  <roger@eyesopen.com>
+
 	PR middle-end/4520
 	PR bootstrap/28784
 	* cselib.c (cselib_hash_rtx): Avoid hashing on the address of labels

gcc/config/alpha/alpha.c

@@ -7836,6 +7836,10 @@ alpha_start_function (FILE *file, const char *fnname,
   HOST_WIDE_INT sa_size;
   /* Complete stack size needed.  */
   unsigned HOST_WIDE_INT frame_size;
+  /* The maximum debuggable frame size (512 Kbytes using Tru64 as).  */
+  unsigned HOST_WIDE_INT max_frame_size = TARGET_ABI_OSF && !TARGET_GAS
+					  ? 524288
+					  : 1UL << 31;
   /* Offset from base reg to register save area.  */
   HOST_WIDE_INT reg_offset;
   char *entry_label = (char *) alloca (strlen (fnname) + 6);
@@ -7960,7 +7964,7 @@ alpha_start_function (FILE *file, const char *fnname,
     fprintf (file, "\t.frame $%d," HOST_WIDE_INT_PRINT_DEC ",$26,%d\n",
 	     (frame_pointer_needed
 	      ? HARD_FRAME_POINTER_REGNUM : STACK_POINTER_REGNUM),
-	     frame_size >= (1UL << 31) ? 0 : frame_size,
+	     frame_size >= max_frame_size ? 0 : frame_size,
 	     current_function_pretend_args_size);
 
   /* Describe which registers were spilled.  */
@@ -7982,7 +7986,7 @@ alpha_start_function (FILE *file, const char *fnname,
       if (imask)
 	{
 	  fprintf (file, "\t.mask 0x%lx," HOST_WIDE_INT_PRINT_DEC "\n", imask,
-		   frame_size >= (1UL << 31) ? 0 : reg_offset - frame_size);
+		   frame_size >= max_frame_size ? 0 : reg_offset - frame_size);
 
 	  for (i = 0; i < 32; ++i)
 	    if (imask & (1UL << i))
@@ -7991,7 +7995,7 @@ alpha_start_function (FILE *file, const char *fnname,
 
       if (fmask)
 	fprintf (file, "\t.fmask 0x%lx," HOST_WIDE_INT_PRINT_DEC "\n", fmask,
-		 frame_size >= (1UL << 31) ? 0 : reg_offset - frame_size);
+		 frame_size >= max_frame_size ? 0 : reg_offset - frame_size);
     }
 
 #if TARGET_ABI_OPEN_VMS