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| author | Richard Stallman <rms@gnu.org> | 1992-10-18 19:56:07 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1992-10-18 19:56:07 +0000 |
| commit | aee9dc31f953ce12926f1454d8c3684b4e092742 (patch) | |
| tree | bb89edfb47320cdc496f4c1b9d24c654bd3d85d3 /gcc | |
| parent | 9074de27ac14b0d9c07cdafe31296ea072b1b464 (diff) | |
| download | gcc-aee9dc31f953ce12926f1454d8c3684b4e092742.zip gcc-aee9dc31f953ce12926f1454d8c3684b4e092742.tar.gz gcc-aee9dc31f953ce12926f1454d8c3684b4e092742.tar.bz2 | |
(canon_reg): Don't call validate_change if INSN is zero.
From-SVN: r2511
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cse.c | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -2386,10 +2386,11 @@ canon_reg (x, insn) /* If replacing pseudo with hard reg or vice versa, ensure the insn remains valid. Likewise if the insn has MATCH_DUPs. */ - if (new && GET_CODE (new) == REG && GET_CODE (XEXP (x, i)) == REG + if (insn != 0 && new != 0 + && GET_CODE (new) == REG && GET_CODE (XEXP (x, i)) == REG && (((REGNO (new) < FIRST_PSEUDO_REGISTER) != (REGNO (XEXP (x, i)) < FIRST_PSEUDO_REGISTER)) - || (insn != 0 && insn_n_dups[recog_memoized (insn)] > 0))) + || insn_n_dups[recog_memoized (insn)] > 0)) validate_change (insn, &XEXP (x, i), new, 1); else XEXP (x, i) = new; |