ia64.c (ia64_function_arg): When placing HFAs in integer registers...

	* ia64.c (ia64_function_arg): When placing HFAs in integer
	registers, do not special case the mode used for complex
	types.  Do not advance int_regs until the current register
	is full.

From-SVN: r76758

gcc/ChangeLog

+2004-01-27  Zack Weinberg  <zack@codesourcery.com>
+
+	* ia64.c (ia64_function_arg): When placing HFAs in integer
+	registers, do not special case the mode used for complex
+	types.  Do not advance int_regs until the current register
+	is full.
+
 2004-01-27  Richard Sandiford  <rsandifo@redhat.com>
 
 	PR target/7297
@@ -15,9 +22,9 @@
 	(restore_stack_nonlocal): Same.
 
 2004-01-27  Devang Patel <dpatel@apple.com>
-	
+
 	* Makefile.in (dwarf2out.o): Depend on input.h
-	* dbxout.c (dbx_debug_hooks): Add new empty hook for 
+	* dbxout.c (dbx_debug_hooks): Add new empty hook for
 	imported_module_or_decl.
 	(xcoff_debug_hooks): Same.
 	* sdbout.c (sdb_debug_hooks): Same.
@@ -43,14 +50,14 @@
 	(dwarf2out_imported_module_or_decl): New function.
 
 2004-01-27  Bob Wilson  <bob.wilson@acm.org>
-	
+
 	* config/xtensa/xtensa.c (xtensa_copy_incoming_a7): Remove SUBREG
 	on CQImode and CHImode incoming arguments in register a7.
 	(function_arg): Wrap BLKmode argument in register a7 in a PARALLEL.
 	* config/xtensa/xtensa.h (BLOCK_REG_PADDING): Define.
 	* config/xtensa/xtensa.md (movdi, movdf): Only call force_reg or
 	xtensa_copy_incoming_a7 before reload.
-	
+
 2004-01-27  J"orn Rennecke <joern.rennecke@superh.com>
 
 	* coverage.c (get_coverage_counts): Give a different message
@@ -83,7 +90,7 @@
 
 2004-01-24  James A. Morrison  <ja2morri@uwaterloo.ca>
 
-        * fixinc/fixinc.c (test_test): Initialize res.
+	* fixinc/fixinc.c (test_test): Initialize res.
 	(start_flexer): Initialize pz_cmd_save.
 
 2004-01-27  Zack Weinberg  <zack@codesourcery.com>

gcc/config/ia64/ia64.c

@@ -3623,6 +3623,7 @@ ia64_function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode, tree type,
       for (; offset < byte_size && int_regs < MAX_ARGUMENT_SLOTS; i++)
 	{
 	  enum machine_mode gr_mode = DImode;
+	  unsigned int gr_size;
 
 	  /* If we have an odd 4 byte hunk because we ran out of FR regs,
 	     then this goes in a GR reg left adjusted/little endian, right
@@ -3636,17 +3637,19 @@ ia64_function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode, tree type,
 	     adjusted/little endian.  */
 	  else if (byte_size - offset == 4)
 	    gr_mode = SImode;
-	  /* Complex floats need to have float mode.  */
-	  if (GET_MODE_CLASS (mode) == MODE_COMPLEX_FLOAT)
-	    gr_mode = hfa_mode;
 
 	  loc[i] = gen_rtx_EXPR_LIST (VOIDmode,
 				      gen_rtx_REG (gr_mode, (basereg
 							     + int_regs)),
 				      GEN_INT (offset));
-	  offset += GET_MODE_SIZE (gr_mode);
-	  int_regs += GET_MODE_SIZE (gr_mode) <= UNITS_PER_WORD
-		      ? 1 : GET_MODE_SIZE (gr_mode) / UNITS_PER_WORD;
+
+	  gr_size = GET_MODE_SIZE (gr_mode);
+	  offset += gr_size;
+	  if (gr_size == UNITS_PER_WORD
+	      || (gr_size < UNITS_PER_WORD && offset % UNITS_PER_WORD == 0))
+	    int_regs++;
+	  else if (gr_size > UNITS_PER_WORD)
+	    int_regs += gr_size / UNITS_PER_WORD;
 	}
 
       /* If we ended up using just one location, just return that one loc, but