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| author | Martin Sebor <msebor@redhat.com> | 2018-01-11 05:13:57 +0000 |
|---|---|---|
| committer | Martin Sebor <msebor@gcc.gnu.org> | 2018-01-10 22:13:57 -0700 |
| commit | 1bfd6a0038c9ade9db7cbae3b550d14a62c91ebf (patch) | |
| tree | 40c6d997cc3c2c18557c8bfa2bf6a706c9c9ed30 /gcc/gimple-fold.c | |
| parent | 05ef31736c431ca4721ba8d05156e99af79a5aac (diff) | |
| download | gcc-1bfd6a0038c9ade9db7cbae3b550d14a62c91ebf.zip gcc-1bfd6a0038c9ade9db7cbae3b550d14a62c91ebf.tar.gz gcc-1bfd6a0038c9ade9db7cbae3b550d14a62c91ebf.tar.bz2 | |
PR tree-optimization/83781 - Bootstrap failed on x86 with --with-arch=corei7
PR tree-optimization/83781 - Bootstrap failed on x86 with --with-arch=corei7
--with-cpu=corei7
gcc/ChangeLog:
* gimple-fold.c (get_range_strlen): Avoid treating arrays of pointers
as string arrays.
gcc/testsuite/ChangeLog:
* gcc.dg/strlenopt-42.c: New test.
From-SVN: r256477
Diffstat (limited to 'gcc/gimple-fold.c')
| -rw-r--r-- | gcc/gimple-fold.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/gimple-fold.c b/gcc/gimple-fold.c index 504a85d..3861692 100644 --- a/gcc/gimple-fold.c +++ b/gcc/gimple-fold.c @@ -1360,10 +1360,17 @@ get_range_strlen (tree arg, tree length[2], bitmap *visited, int type, { tree type = TREE_TYPE (TREE_OPERAND (arg, 0)); + /* Determine the "innermost" array type. */ while (TREE_CODE (type) == ARRAY_TYPE && TREE_CODE (TREE_TYPE (type)) == ARRAY_TYPE) type = TREE_TYPE (type); + /* Avoid arrays of pointers. */ + tree eltype = TREE_TYPE (type); + if (TREE_CODE (type) != ARRAY_TYPE + || !INTEGRAL_TYPE_P (eltype)) + return false; + val = TYPE_SIZE_UNIT (type); if (!val || integer_zerop (val)) return false; |