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Fix for abort when PROMOTE_MODES defined but PROMOTE_FUNCTION_{ARG,RETURN} not.

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* expr.c (store_expr): When target is a promoted subreg, return a
	promoted subreg as a result.

From-SVN: r27705
This commit is contained in:
Jim Wilson 1999-06-22 14:39:07 +00:00 committed by Jim Wilson
parent 2618f95598
commit 3dbecef9bc
2 changed files with 19 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
1999-06-22 Jim Wilson <wilson@cygnus.com>
* expr.c (store_expr): When target is a promoted subreg, return a
promoted subreg as a result.
Tue Jun 22 17:14:58 1999 Michael Meissner <meissner@cygnus.com>
* dwarf2out.c (dwarf2out_frame_debug_expr): Reformat to match GNU

14
gcc/expr.c
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@ -3652,6 +3652,20 @@ store_expr (exp, target, want_value)
convert_move (SUBREG_REG (target), temp,
SUBREG_PROMOTED_UNSIGNED_P (target));
/* If we promoted a constant, change the mode back down to match
target. Otherwise, the caller might get confused by a result whose
mode is larger than expected. */
if (want_value && GET_MODE (temp) != GET_MODE (target)
&& GET_MODE (temp) != VOIDmode)
{
temp = gen_rtx_SUBREG (GET_MODE (target), temp, 0);
SUBREG_PROMOTED_VAR_P (temp) = 1;
SUBREG_PROMOTED_UNSIGNED_P (temp)
= SUBREG_PROMOTED_UNSIGNED_P (target);
}
return want_value ? temp : NULL_RTX;
}
else