diff options
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-09-20 19:10:44 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-09-20 19:10:44 +0000 |
| commit | 73a991443f15b27ad2705034699beec4ff8106c6 (patch) | |
| tree | 13704f74fe1fa61712fb5d3b304d3cde911db3ea | |
| parent | b11b935ef39cbade11a97718a79381786de2803f (diff) | |
| download | gcc-73a991443f15b27ad2705034699beec4ff8106c6.tar.gz | |
PR tree-optimization/23929
* tree-ssa-loop-niter.c (expand_simple_operations): Return immediately
if expr is NULL.
* gcc.c-torture/compile/pr23929.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@104461 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr23929.c | 21 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 6 |
4 files changed, 35 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3a6a8dd5cc9..f19cfdb44e2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ 2005-09-20 Jakub Jelinek <jakub@redhat.com> + PR tree-optimization/23929 + * tree-ssa-loop-niter.c (expand_simple_operations): Return immediately + if expr is NULL. + PR tree-optimization/23818 * tree-stdarg.c (execute_optimize_stdarg): Call calculate_dominance_info. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index a70e415a738..382e26f5b54 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2005-09-20 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/23929 + * gcc.c-torture/compile/pr23929.c: New test. + 2005-09-20 Steve Ellcey <sje@cup.hp.com> PR testsuite/23186 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr23929.c b/gcc/testsuite/gcc.c-torture/compile/pr23929.c new file mode 100644 index 00000000000..210bb585e06 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr23929.c @@ -0,0 +1,21 @@ +/* PR tree-optimization/23929 */ + +extern void bar (char *); + +void +foo (int n, char *z) +{ + char b[2048]; + int x, y; + + bar (b); + for (y = 0; y < 60; y++) + if (n == 600) + for (x = 0; x < 320;) + { + *z++ = b[x]; + x += 1; + *z++ = b[x]; + x += 1; + } +} diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index 544ead2850a..b720e194201 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -634,11 +634,15 @@ expand_simple_operations (tree expr) { unsigned i, n; tree ret = NULL_TREE, e, ee, stmt; - enum tree_code code = TREE_CODE (expr); + enum tree_code code; + + if (expr == NULL_TREE) + return expr; if (is_gimple_min_invariant (expr)) return expr; + code = TREE_CODE (expr); if (IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (code))) { n = TREE_CODE_LENGTH (code); |