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| author | Richard Henderson <rth@cygnus.com> | 1999-01-11 18:54:32 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 1999-01-11 18:54:32 -0800 |
| commit | 1ff136fd07190e18264edfd89b389d9d3d16655a (patch) | |
| tree | 38c765e76c500101cd2a77542dcb1f59cfc22afb /gcc/cse.c | |
| parent | fb857ec164b4e0616396a4ff07593db1a9974800 (diff) | |
| download | gcc-1ff136fd07190e18264edfd89b389d9d3d16655a.zip gcc-1ff136fd07190e18264edfd89b389d9d3d16655a.tar.gz gcc-1ff136fd07190e18264edfd89b389d9d3d16655a.tar.bz2 | |
* cse.c (cse_insn): Never prefer (const (constant_p_rtx)).
From-SVN: r24637
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -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 |