reload.c: (immune_p): Constants never overlap hard frame pointer references.

* reload.c: (immune_p): Constants never overlap hard frame pointer references.
(find_reloads_address): Compute invalid references to the hard
frame pointer in a register; also (reg + const)
and (reg + reg + const).

From-SVN: r5462

diff --git a/gcc/reload.c b/gcc/reload.c
index 27d017d8d67aea1b0f97c804969b7544df311350..7d9d55b106770dc091c9518434c6d322efb62078 100644 (file)
--- a/gcc/reload.c
+++ b/gcc/reload.c
@@ -2109,10 +2109,12 @@ immune_p (x, y, ydata)
       /* Constants and stack slots never overlap.  */
       if (CONSTANT_P (xdata.base)
          && (ydata.base == frame_pointer_rtx
+             || ydata.base == hard_frame_pointer_rtx
              || ydata.base == stack_pointer_rtx))
        return 1;
       if (CONSTANT_P (ydata.base)
          && (xdata.base == frame_pointer_rtx
+             || xdata.base == hard_frame_pointer_rtx
              || xdata.base == stack_pointer_rtx))
        return 1;
       /* If either base is variable, we don't know anything.  */
@@ -4083,6 +4085,9 @@ find_reloads_address (mode, memrefloc, ad, loc, opnum, type, ind_levels)
      (displacement is too large), compute the sum in a register.  */
   else if (GET_CODE (ad) == PLUS
           && (XEXP (ad, 0) == frame_pointer_rtx
+#if HARD_FRAME_POINTER_REGNUM != FRAME_POINTER_REGNUM
+              || XEXP (ad, 0) == hard_frame_pointer_rtx
+#endif
 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
               || XEXP (ad, 0) == arg_pointer_rtx
 #endif
@@ -4149,6 +4154,9 @@ find_reloads_address (mode, memrefloc, ad, loc, opnum, type, ind_levels)
   else if (GET_CODE (ad) == PLUS && GET_CODE (XEXP (ad, 1)) == CONST_INT
           && GET_CODE (XEXP (ad, 0)) == PLUS
           && (XEXP (XEXP (ad, 0), 0) == frame_pointer_rtx
+#if FRAME_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM
+              || XEXP (XEXP (ad, 0), 0) == hard_frame_pointer_rtx
+#endif
 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
               || XEXP (XEXP (ad, 0), 0) == arg_pointer_rtx
 #endif
@@ -4169,6 +4177,9 @@ find_reloads_address (mode, memrefloc, ad, loc, opnum, type, ind_levels)
   else if (GET_CODE (ad) == PLUS && GET_CODE (XEXP (ad, 1)) == CONST_INT
           && GET_CODE (XEXP (ad, 0)) == PLUS
           && (XEXP (XEXP (ad, 0), 1) == frame_pointer_rtx
+#if HARD_FRAME_POINTER_REGNUM != FRAME_POINTER_REGNUM
+              || XEXP (XEXP (ad, 0), 1) == hard_frame_pointer_rtx
+#endif
 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
               || XEXP (XEXP (ad, 0), 1) == arg_pointer_rtx
 #endif