* sh.c (sh_builtin_saveregs): If starting with an odd fp register,

	make sure that buffer starts on odd word address.
	(sh_va_arg): Skip odd fp registers when reading a double precision
	value.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@53337 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b3ad8d7..62002f5 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+Thu May  9 18:29:24 2002  J"orn Rennecke <joern.rennecke@superh.com>
+
+       * sh.c (sh_builtin_saveregs): If starting with an odd fp register,
+       make sure that buffer starts on odd word address.
+       (sh_va_arg): Skip odd fp registers when reading a double precision
+       value.
+
 2002-05-09  Neil Booth  <neil@daikokuya.demon.co.uk>
 
        * tree.h (preserve_data, object_permanent_p, type_precision):

diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c
index 5eee362..07bf6cf 100644 (file)
--- a/gcc/config/sh/sh.c
+++ b/gcc/config/sh/sh.c
@@ -5090,6 +5090,15 @@ sh_builtin_saveregs ()
   if (TARGET_SHMEDIA)
     regbuf = gen_rtx_MEM (BLKmode,
                          gen_rtx_REG (Pmode, ARG_POINTER_REGNUM));
+  else if (n_floatregs & 1)
+    {
+      rtx addr;
+
+      regbuf = assign_stack_local (BLKmode, bufsize + UNITS_PER_WORD, 0);
+      addr = copy_to_mode_reg (Pmode, XEXP (regbuf, 0));
+      emit_insn (gen_iorsi3 (addr, addr, GEN_INT (UNITS_PER_WORD)));
+      regbuf = change_address (regbuf, BLKmode, addr);
+    }
   else
     regbuf = assign_stack_local (BLKmode, bufsize, 0);
   alias_set = get_varargs_alias_set ();
@@ -5353,13 +5362,19 @@ sh_va_arg (valist, type)
 
       if (pass_as_float)
        {
+         int first_floatreg
+           = current_function_args_info.arg_count[(int) SH_ARG_FLOAT];
+         int n_floatregs = MAX (0, NPARM_REGS (SFmode) - first_floatreg);
+
          emit_cmp_and_jump_insns (expand_expr (next_fp, NULL_RTX, Pmode,
                                                EXPAND_NORMAL),
                                   expand_expr (next_fp_limit, NULL_RTX,
                                                Pmode, EXPAND_NORMAL),
                                   GE, const1_rtx, Pmode, 1, lab_false);
 
-         if (TYPE_ALIGN (type) > BITS_PER_WORD)
+         if (TYPE_ALIGN (type) > BITS_PER_WORD
+             || (((TREE_CODE (type) == REAL_TYPE && size == 8) || size == 16)
+                 && (n_floatregs & 1)))
            {
              tmp = build (BIT_AND_EXPR, ptr_type_node, next_fp,
                           build_int_2 (UNITS_PER_WORD, 0));