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* cse.c (cse_insn): Never prefer (const (constant_p_rtx)).

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From-SVN: r24637
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Richard Henderson 1999-01-11 18:54:32 -08:00 committed by Richard Henderson
parent fb857ec164
commit 1ff136fd07
2 changed files with 10 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,7 @@
Tue Jan 12 02:53:46 1999 Richard Henderson <rth@cygnus.com>
* cse.c (cse_insn): Never prefer (const (constant_p_rtx)).
Tue Jan 12 02:36:10 PST 1999 Jeff Law (law@cygnus.com)
* version.c: Bump for snapshot.

6
gcc/cse.c
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@ -6865,6 +6865,12 @@ cse_insn (insn, libcall_insn)
if (src == src_folded)
src_folded = 0;
/* Folds of constant_p_rtx are to be preferred, since we do
not wish any to live past CSE. */
if (src && GET_CODE (src) == CONST
&& GET_CODE (XEXP (src, 0)) == CONSTANT_P_RTX)
src = 0;
/* At this point, ELT, if non-zero, points to a class of expressions
equivalent to the source of this SET and SRC, SRC_EQV, SRC_FOLDED,
and SRC_RELATED, if non-zero, each contain additional equivalent