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| author | Mark Mitchell <mark@codesourcery.com> | 1999-05-26 09:50:08 +0000 |
|---|---|---|
| committer | Mark Mitchell <mmitchel@gcc.gnu.org> | 1999-05-26 09:50:08 +0000 |
| commit | b7f2c1fc1b35311b3aa2c91f896bebef99627167 (patch) | |
| tree | d0255fced8e152416795cc0a88338b002ca6e8b8 /gcc/fold-const.c | |
| parent | f20b5577f8d9aeada63329b028d91769c7df4884 (diff) | |
| download | gcc-b7f2c1fc1b35311b3aa2c91f896bebef99627167.zip gcc-b7f2c1fc1b35311b3aa2c91f896bebef99627167.tar.gz gcc-b7f2c1fc1b35311b3aa2c91f896bebef99627167.tar.bz2 | |
fold-const.c (fold): STRIP_NOPS when deciding whether or not something is a candidate for...
* fold-const.c (fold): STRIP_NOPS when deciding whether or not
something is a candidate for optimize_bit_field_compare.
From-SVN: r27169
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 6acbe0b..b67ff82 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -6036,16 +6036,20 @@ fold (expr) } /* If this is a comparison of a field, we may be able to simplify it. */ - if ((TREE_CODE (arg0) == COMPONENT_REF - || TREE_CODE (arg0) == BIT_FIELD_REF) - && (code == EQ_EXPR || code == NE_EXPR) - /* Handle the constant case even without -O - to make sure the warnings are given. */ - && (optimize || TREE_CODE (arg1) == INTEGER_CST)) - { - t1 = optimize_bit_field_compare (code, type, arg0, arg1); - return t1 ? t1 : t; - } + { + tree xarg0 = arg0; + STRIP_NOPS (xarg0); + if ((TREE_CODE (xarg0) == COMPONENT_REF + || TREE_CODE (xarg0) == BIT_FIELD_REF) + && (code == EQ_EXPR || code == NE_EXPR) + /* Handle the constant case even without -O + to make sure the warnings are given. */ + && (optimize || TREE_CODE (arg1) == INTEGER_CST)) + { + t1 = optimize_bit_field_compare (code, type, xarg0, arg1); + return t1 ? t1 : t; + } + } /* If this is a comparison of complex values and either or both sides are a COMPLEX_EXPR or COMPLEX_CST, it is best to split up the |