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| author | Serge Belyshev <belyshev@depni.sinp.msu.ru> | 2006-11-09 19:24:32 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2006-11-09 19:24:32 +0000 |
| commit | 0ad12cd3b586778ac750bfd9172a68fe0d6a4140 (patch) | |
| tree | 4512a404386f0c2ec5a9161e38f98f6db671385f /gcc/fold-const.c | |
| parent | 7114edca021e3251ec74acf93e9ebe18b128c87a (diff) | |
| download | gcc-0ad12cd3b586778ac750bfd9172a68fe0d6a4140.zip gcc-0ad12cd3b586778ac750bfd9172a68fe0d6a4140.tar.gz gcc-0ad12cd3b586778ac750bfd9172a68fe0d6a4140.tar.bz2 | |
re PR middle-end/29726 (invalid folding of ((X >> C1) & C2) != 0 or "M-x is undefined" in emacs)
2006-11-09 Serge Belyshev <belyshev@depni.sinp.msu.ru>
PR middle-end/29726
* fold-const.c (fold_binary) <EQ_EXPR>: Fix typo in variable name.
* gcc.dg/fold-eqandshift-1.c (test5): Uncomment function.
(test6): Ditto.
(dg-final): Add scan-tree-dump-times patterns for test5 and test6.
* gcc.dg/fold-eqandshift-3.c: New test case.
From-SVN: r118625
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index c74ffa3..6016a70 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -10587,7 +10587,7 @@ fold_binary (enum tree_code code, tree type, tree op0, tree op1) unsigned HOST_WIDE_INT log2 = tree_log2 (arg01); /* If (C2 << C1) doesn't overflow, then ((X >> C1) & C2) != 0 can be rewritten as (X & (C2 << C1)) != 0. */ - if ((log2 + TREE_INT_CST_LOW (arg01)) < prec) + if ((log2 + TREE_INT_CST_LOW (arg001)) < prec) { tem = fold_build2 (LSHIFT_EXPR, itype, arg01, arg001); tem = fold_build2 (BIT_AND_EXPR, itype, arg000, tem); |