(EXTRA_CONSTRAINT): Add new 'T' and 'U' constraints

which check for aligned accesses to memory and register pairs.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@1661 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/config/sparc/sparc.h b/gcc/config/sparc/sparc.h
index c3c9614..b4f5f69 100644 (file)
--- a/gcc/config/sparc/sparc.h
+++ b/gcc/config/sparc/sparc.h
@@ -1090,8 +1090,12 @@ extern union tree_node *current_function_decl;
       && REG_OK_FOR_BASE_P (XEXP (OP, 0)))             \
    : (C) == 'S'                                                \
    ? (CONSTANT_P (OP) || memory_address_p (Pmode, OP)) \
+   : (C) == 'T'                                                \
+   ? (mem_aligned_8 (OP))                              \
+   : (C) == 'U'                                                \
+   ? (register_ok_for_ldd (OP))                                \
    : 0)
-
+ 
 #else
 
 /* Nonzero if X is a hard reg that can be used as an index.  */
@@ -1112,7 +1116,11 @@ extern union tree_node *current_function_decl;
       : ((C) == 'S'                                    \
         ? (CONSTANT_P (OP)                             \
            || (GET_CODE (OP) == REG && reg_renumber[REGNO (OP)] > 0)\
-           || strict_memory_address_p (Pmode, OP)) : 0)))
+           || strict_memory_address_p (Pmode, OP))     \
+        : ((C) == 'T' ?                                \
+           mem_aligned_8 (OP) && strict_memory_address_p (Pmode, OP) \
+           : ((C) == 'U' ?                             \
+              register_ok_for_ldd (OP) : 0)))))
 #endif
 \f
 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression