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| author | Alexandre Oliva <aoliva@redhat.com> | 2009-09-08 17:44:10 +0000 |
|---|---|---|
| committer | Alexandre Oliva <aoliva@gcc.gnu.org> | 2009-09-08 17:44:10 +0000 |
| commit | da4a947987f3486f79a8363b5519096cac4590f2 (patch) | |
| tree | 5dc1f988190f14afa040d48d8bb3131c91e5e65d /gcc/cselib.c | |
| parent | 713e2ea6b6e3016e04c6e750828cd8f1e0bf1d0b (diff) | |
| download | gcc-da4a947987f3486f79a8363b5519096cac4590f2.zip gcc-da4a947987f3486f79a8363b5519096cac4590f2.tar.gz gcc-da4a947987f3486f79a8363b5519096cac4590f2.tar.bz2 | |
re PR debug/41276 (Segmentation fault in lookup_page_table_entry)
PR debug/41276
PR debug/41307
* cselib.c (cselib_expand_value_rtx_1): Don't return copy of
invalid subreg.
From-SVN: r151523
Diffstat (limited to 'gcc/cselib.c')
| -rw-r--r-- | gcc/cselib.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/gcc/cselib.c b/gcc/cselib.c index 8d52c51..927f93c 100644 --- a/gcc/cselib.c +++ b/gcc/cselib.c @@ -1165,12 +1165,12 @@ cselib_expand_value_rtx_1 (rtx orig, struct expand_value_data *evd, scopy = simplify_gen_subreg (GET_MODE (orig), subreg, GET_MODE (SUBREG_REG (orig)), SUBREG_BYTE (orig)); - if (scopy == NULL - || (GET_CODE (scopy) == SUBREG - && !REG_P (SUBREG_REG (scopy)) - && !MEM_P (SUBREG_REG (scopy)) - && (REG_P (SUBREG_REG (orig)) - || MEM_P (SUBREG_REG (orig))))) + if ((scopy == NULL + || (GET_CODE (scopy) == SUBREG + && !REG_P (SUBREG_REG (scopy)) + && !MEM_P (SUBREG_REG (scopy)))) + && (REG_P (SUBREG_REG (orig)) + || MEM_P (SUBREG_REG (orig)))) return shallow_copy_rtx (orig); return scopy; } |