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(output_constant_pool): Labels can be deleted by being turned into

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NOTEs, not just have INSN_DELETED_P.

From-SVN: r2653
This commit is contained in:
Richard Kenner 1992-10-29 17:30:41 -05:00
parent 6ba17bb091
commit 7b2b3f1f70
1 changed files with 7 additions and 3 deletions
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10
gcc/varasm.c
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@ -2494,11 +2494,15 @@ output_constant_pool (fnname, fndecl)
/* See if X is a LABEL_REF (or a CONST referring to a LABEL_REF) /* See if X is a LABEL_REF (or a CONST referring to a LABEL_REF)
whose CODE_LABEL has been deleted. This can occur if a jump table whose CODE_LABEL has been deleted. This can occur if a jump table
is eliminated by optimization. If so, write a constant of zero is eliminated by optimization. If so, write a constant of zero
instead. */ instead. Note that this can also happen by turning the
if ((GET_CODE (x) == LABEL_REF && INSN_DELETED_P (XEXP (x, 0))) CODE_LABEL into a NOTE. */
if (((GET_CODE (x) == LABEL_REF
&& (INSN_DELETED_P (XEXP (x, 0))
|| GET_CODE (XEXP (x, 0)) == NOTE)))
|| (GET_CODE (x) == CONST && GET_CODE (XEXP (x, 0)) == PLUS || (GET_CODE (x) == CONST && GET_CODE (XEXP (x, 0)) == PLUS
&& GET_CODE (XEXP (XEXP (x, 0), 0)) == LABEL_REF && GET_CODE (XEXP (XEXP (x, 0), 0)) == LABEL_REF
&& INSN_DELETED_P (XEXP (XEXP (XEXP (x, 0), 0), 0)))) && (INSN_DELETED_P (XEXP (XEXP (XEXP (x, 0), 0), 0))
|| GET_CODE (XEXP (XEXP (XEXP (x, 0), 0), 0)) == NOTE)))
x = const0_rtx; x = const0_rtx;
/* First switch to correct section. */ /* First switch to correct section. */