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| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-02-14 23:44:39 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-02-14 23:44:39 +0000 |
| commit | f1f1d0f661fe7a85d5bba962ad8ab9d5ce340d8a (patch) | |
| tree | 15dba891552029856cf0f998de87ad45a413d63b /gcc/alias.c | |
| parent | 385e24599e40389ecc8cb7c58249d42e5bea543c (diff) | |
| download | gcc-f1f1d0f661fe7a85d5bba962ad8ab9d5ce340d8a.tar.gz | |
* alias.c (init_alias_analysis): Avoid self-referential value
when setting reg_known_value from REG_EQUAL notes.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@25211 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index 876b3efbae4..eae57c763a1 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -1465,7 +1465,8 @@ init_alias_analysis () && (((note = find_reg_note (insn, REG_EQUAL, 0)) != 0 && REG_N_SETS (REGNO (SET_DEST (set))) == 1) || (note = find_reg_note (insn, REG_EQUIV, NULL_RTX)) != 0) - && GET_CODE (XEXP (note, 0)) != EXPR_LIST) + && GET_CODE (XEXP (note, 0)) != EXPR_LIST + && ! reg_overlap_mentioned_p (SET_DEST (set), XEXP (note, 0))) { int regno = REGNO (SET_DEST (set)); reg_known_value[regno] = XEXP (note, 0); |