re PR rtl-optimization/15289 (reload error with non-lowpart subregs)

        PR rtl-opt/15289
        * emit-rtl.c (gen_complex_constant_part): Remove.
        (gen_realpart, gen_imagpart): Remove.
        * rtl.h (gen_realpart, gen_imagpart): Remove.
        * expmed.c (extract_bit_field): Remove CONCAT hack catering to
        gen_realpart/gen_imagpart.
        * expr.c (write_complex_part, read_complex_part): New.
        (emit_move_via_alt_mode, emit_move_via_integer, emit_move_resolve_push,
        emit_move_complex_push, emit_move_complex, emit_move_ccmode,
        emit_move_multi_word): Split out from ...
        (emit_move_insn_1): ... here.
        (expand_expr_real_1) <COMPLEX_EXPR>: Use write_complex_part.
        <REALPART_EXPR, IMAGPART_EXPR>: Use read_complex_part.
        * function.c (assign_parm_setup_reg): Hard-code transformations
        instead of using gen_realpart/gen_imagpart.

From-SVN: r91571

1 files changed, 0 insertions, 76 deletions

diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c
index fba2412..d722f90 100644
--- a/gcc/emit-rtl.c
+++ b/gcc/emit-rtl.c
@@ -184,7 +184,6 @@ static int reg_attrs_htab_eq (const void *, const void *);
 static reg_attrs *get_reg_attrs (tree, int);
 static tree component_ref_for_mem_expr (tree);
 static rtx gen_const_vector (enum machine_mode, int);
-static rtx gen_complex_constant_part (enum machine_mode, rtx, int);
 static void copy_rtx_if_shared_1 (rtx *orig);
 
 /* Probability of the conditional branch currently proceeded by try_split.
@@ -1169,81 +1168,6 @@ gen_lowpart_common (enum machine_mode mode, rtx x)
   return 0;
 }
 
-/* Return the constant real or imaginary part (which has mode MODE)
-   of a complex value X.  The IMAGPART_P argument determines whether
-   the real or complex component should be returned.  This function
-   returns NULL_RTX if the component isn't a constant.  */
-
-static rtx
-gen_complex_constant_part (enum machine_mode mode, rtx x, int imagpart_p)
-{
-  tree decl, part;
-
-  if (MEM_P (x)
-      && GET_CODE (XEXP (x, 0)) == SYMBOL_REF)
-    {
-      decl = SYMBOL_REF_DECL (XEXP (x, 0));
-      if (decl != NULL_TREE && TREE_CODE (decl) == COMPLEX_CST)
-	{
-	  part = imagpart_p ? TREE_IMAGPART (decl) : TREE_REALPART (decl);
-	  if (TREE_CODE (part) == REAL_CST
-	      || TREE_CODE (part) == INTEGER_CST)
-	    return expand_expr (part, NULL_RTX, mode, 0);
-	}
-    }
-  return NULL_RTX;
-}
-
-/* Return the real part (which has mode MODE) of a complex value X.
-   This always comes at the low address in memory.  */
-
-rtx
-gen_realpart (enum machine_mode mode, rtx x)
-{
-  rtx part;
-
-  /* Handle complex constants.  */
-  part = gen_complex_constant_part (mode, x, 0);
-  if (part != NULL_RTX)
-    return part;
-
-  if (WORDS_BIG_ENDIAN
-      && GET_MODE_BITSIZE (mode) < BITS_PER_WORD
-      && REG_P (x)
-      && REGNO (x) < FIRST_PSEUDO_REGISTER)
-    internal_error
-      ("can't access real part of complex value in hard register");
-  else if (WORDS_BIG_ENDIAN)
-    return gen_highpart (mode, x);
-  else
-    return gen_lowpart (mode, x);
-}
-
-/* Return the imaginary part (which has mode MODE) of a complex value X.
-   This always comes at the high address in memory.  */
-
-rtx
-gen_imagpart (enum machine_mode mode, rtx x)
-{
-  rtx part;
-
-  /* Handle complex constants.  */
-  part = gen_complex_constant_part (mode, x, 1);
-  if (part != NULL_RTX)
-    return part;
-
-  if (WORDS_BIG_ENDIAN)
-    return gen_lowpart (mode, x);
-  else if (! WORDS_BIG_ENDIAN
-	   && GET_MODE_BITSIZE (mode) < BITS_PER_WORD
-	   && REG_P (x)
-	   && REGNO (x) < FIRST_PSEUDO_REGISTER)
-    internal_error
-      ("can't access imaginary part of complex value in hard register");
-  else
-    return gen_highpart (mode, x);
-}
-
 rtx
 gen_highpart (enum machine_mode mode, rtx x)
 {