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| author | pfg <pfg@FreeBSD.org> | 2012-06-21 16:49:20 +0000 |
|---|---|---|
| committer | pfg <pfg@FreeBSD.org> | 2012-06-21 16:49:20 +0000 |
| commit | 8c84995be2f385f8e9a19b071c5297940a91c4dc (patch) | |
| tree | 061d41c370879adcdbc7178c01ee3106fafc9a4b /contrib/gcc/fold-const.c | |
| parent | dd83f274ed4c8fa3cdb0fd69be2f4df1e1ac398e (diff) | |
| download | FreeBSD-src-8c84995be2f385f8e9a19b071c5297940a91c4dc.zip FreeBSD-src-8c84995be2f385f8e9a19b071c5297940a91c4dc.tar.gz | |
Bring a couple of fixes for gcc optimizations.
The GCC4.3 branch contains some optimization fixes
that were not considered regressions and therefore
were never backported. We are bringing a couple of
them that are under GPLv2 since they were made
before the license switch upstream.
While here, add the GCC revision numbers in the
log.
Discussed with: jkim
MFC after: 1 week
Diffstat (limited to 'contrib/gcc/fold-const.c')
| -rw-r--r-- | contrib/gcc/fold-const.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/contrib/gcc/fold-const.c b/contrib/gcc/fold-const.c index 37d99f8..1aadd30 100644 --- a/contrib/gcc/fold-const.c +++ b/contrib/gcc/fold-const.c @@ -2802,9 +2802,13 @@ operand_equal_p (tree arg0, tree arg1, unsigned int flags) case ARRAY_REF: case ARRAY_RANGE_REF: - /* Operands 2 and 3 may be null. */ + /* Operands 2 and 3 may be null. + Compare the array index by value if it is constant first as we + may have different types but same value here. */ return (OP_SAME (0) - && OP_SAME (1) + && (tree_int_cst_equal (TREE_OPERAND (arg0, 1), + TREE_OPERAND (arg1, 1)) + || OP_SAME (1)) && OP_SAME_WITH_NULL (2) && OP_SAME_WITH_NULL (3)); |
