* gcc.dg/compat/scalar-by-value-3_main.c: New file.

[pf3gnuchains/gcc-fork.git] / gcc / expr.h

diff --git a/gcc/expr.h b/gcc/expr.h
index 8b6e36a..1e50320 100644 (file)
--- a/gcc/expr.h
+++ b/gcc/expr.h
@@ -51,9 +51,12 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
    EXPAND_INITIALIZER is similar but also record any labels on forced_labels.
    EXPAND_CONST_ADDRESS means it is ok to return a MEM whose address
     is a constant that is not a legitimate address.
-   EXPAND_WRITE means we are only going to write to the resulting rtx.  */
+   EXPAND_WRITE means we are only going to write to the resulting rtx.
+   EXPAND_MEMORY means we are interested in a memory result, even if
+    the memory is constant and we could have propagated a constant value.  */
 enum expand_modifier {EXPAND_NORMAL = 0, EXPAND_STACK_PARM = 2, EXPAND_SUM,
-                     EXPAND_CONST_ADDRESS, EXPAND_INITIALIZER, EXPAND_WRITE};
+                     EXPAND_CONST_ADDRESS, EXPAND_INITIALIZER, EXPAND_WRITE,
+                     EXPAND_MEMORY};
 
 /* Prevent the compiler from deferring stack pops.  See
    inhibit_defer_pop for more information.  */
@@ -158,6 +161,14 @@ do {                                                       \
 #define FUNCTION_ARG_BOUNDARY(MODE, TYPE)      PARM_BOUNDARY
 #endif
 
+/* Define to nonzero if complex arguments should be split into their
+   corresponding components.  */
+#ifndef SPLIT_COMPLEX_ARGS
+#define SPLIT_COMPLEX_ARGS 0
+#endif
+tree split_complex_types (tree);
+tree split_complex_values (tree);
+
 /* Provide a default value for STRICT_ARGUMENT_NAMING.  */
 #ifndef STRICT_ARGUMENT_NAMING
 #define STRICT_ARGUMENT_NAMING 0
@@ -450,6 +461,11 @@ extern void use_group_regs PARAMS ((rtx *, rtx));
    If OBJECT has BLKmode, SIZE is its length in bytes.  */
 extern rtx clear_storage PARAMS ((rtx, rtx));
 
+/* Determine whether the LEN bytes can be moved by using several move
+   instructions.  Return nonzero if a call to move_by_pieces should
+   succeed.  */
+extern int can_move_by_pieces PARAMS ((unsigned HOST_WIDE_INT, unsigned int));
+
 /* Return nonzero if it is desirable to store LEN bytes generated by
    CONSTFUN with several move instructions by store_by_pieces
    function.  CONSTFUNDATA is a pointer which will be passed as argument
@@ -463,11 +479,12 @@ extern int can_store_by_pieces PARAMS ((unsigned HOST_WIDE_INT,
 /* Generate several move instructions to store LEN bytes generated by
    CONSTFUN to block TO.  (A MEM rtx with BLKmode).  CONSTFUNDATA is a
    pointer which will be passed as argument in every CONSTFUN call.
-   ALIGN is maximum alignment we can assume.  */
-extern void store_by_pieces PARAMS ((rtx, unsigned HOST_WIDE_INT,
-                                    rtx (*) (PTR, HOST_WIDE_INT,
-                                             enum machine_mode),
-                                    PTR, unsigned int));
+   ALIGN is maximum alignment we can assume.
+   Returns TO + LEN.  */
+extern rtx store_by_pieces PARAMS ((rtx, unsigned HOST_WIDE_INT,
+                                   rtx (*) (PTR, HOST_WIDE_INT,
+                                            enum machine_mode),
+                                   PTR, unsigned int, int));
 
 /* Emit insns to set X from Y.  */
 extern rtx emit_move_insn PARAMS ((rtx, rtx));