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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
This commit is contained in:
Doug Evans 1993-09-24 19:50:44 +00:00
parent 6fa4004a0c
commit a36d4c6259
1 changed files with 11 additions and 0 deletions
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11
gcc/reload.c
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@ -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