* config/alpha/vms.h (VMS_DEBUGGING_INFO): New macro.

[pf3gnuchains/gcc-fork.git] / gcc / explow.c

diff --git a/gcc/explow.c b/gcc/explow.c
index 940a839..4d12f00 100644 (file)
--- a/gcc/explow.c
+++ b/gcc/explow.c
@@ -32,6 +32,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include "optabs.h"
 #include "hard-reg-set.h"
 #include "insn-config.h"
+#include "ggc.h"
 #include "recog.h"
 
 static rtx break_out_memory_refs       PARAMS ((rtx));
@@ -363,6 +364,7 @@ convert_memory_address (to_mode, x)
 
     case SUBREG:
       if (POINTERS_EXTEND_UNSIGNED >= 0
+         && (SUBREG_PROMOTED_VAR_P (x) || REG_POINTER (SUBREG_REG (x)))
          && GET_MODE (SUBREG_REG (x)) == to_mode)
        return SUBREG_REG (x);
       break;
@@ -1285,7 +1287,7 @@ allocate_dynamic_stack_space (size, target, known_align)
   do_pending_stack_adjust ();
 
  /* We ought to be called always on the toplevel and stack ought to be aligned
-    propertly.  */
+    properly.  */
   if (stack_pointer_delta % (PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT))
     abort ();
 
@@ -1346,7 +1348,7 @@ allocate_dynamic_stack_space (size, target, known_align)
                                    NULL_RTX, 1, OPTAB_WIDEN);
 #endif
          emit_cmp_and_jump_insns (available, size, GEU, NULL_RTX, Pmode, 1,
-                                  0, space_available);
+                                  space_available);
 #ifdef HAVE_trap
          if (HAVE_trap)
            emit_insn (gen_trap ());
@@ -1415,6 +1417,7 @@ set_stack_check_libfunc (libfunc)
      rtx libfunc;
 {
   stack_check_libfunc = libfunc;
+  ggc_add_rtx_root (&stack_check_libfunc, 1);
 }
 \f
 /* Emit one stack probe at ADDRESS, an address within the stack.  */
@@ -1468,7 +1471,7 @@ probe_stack_range (first, size)
        addr = convert_memory_address (ptr_mode, addr);
 #endif
 
-      emit_library_call (stack_check_libfunc, 0, VOIDmode, 1, addr,
+      emit_library_call (stack_check_libfunc, LCT_NORMAL, VOIDmode, 1, addr,
                         ptr_mode);
     }
 
@@ -1561,7 +1564,7 @@ probe_stack_range (first, size)
 
       emit_label (test_lab);
       emit_cmp_and_jump_insns (test_addr, last_addr, CMP_OPCODE,
-                              NULL_RTX, Pmode, 1, 0, loop_lab);
+                              NULL_RTX, Pmode, 1, loop_lab);
       emit_jump (end_lab);
       emit_note (NULL, NOTE_INSN_LOOP_END);
       emit_label (end_lab);