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| author | spop <spop@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-08-21 10:48:23 +0000 |
|---|---|---|
| committer | spop <spop@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-08-21 10:48:23 +0000 |
| commit | 5c2800929619d22e6a521c601780fc61f3fa9683 (patch) | |
| tree | e7c1b97bd3fb20b67e45a396257d670957faddf4 /gcc/tree-ssa-loop-niter.c | |
| parent | d30388200fa08cdfb5e02409ef07d19d244d0a17 (diff) | |
| download | gcc-5c2800929619d22e6a521c601780fc61f3fa9683.tar.gz | |
PR tree-optimization/23434
* tree-ssa-loop-niter.c (proved_non_wrapping_p): Give up when
the iteration bound is not an INTEGER_CST.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@103315 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-loop-niter.c')
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index fc5491b857e..a8e4737633d 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -1653,6 +1653,10 @@ proved_non_wrapping_p (tree at_stmt, else valid_niter = fold_convert (TREE_TYPE (bound), valid_niter); + /* Give up if BOUND was not folded to an INTEGER_CST, as in PR23434. */ + if (TREE_CODE (bound) != INTEGER_CST) + return false; + /* After the statement niter_bound->at_stmt we know that anything is executed at most BOUND times. */ if (at_stmt && stmt_dominates_stmt_p (niter_bound->at_stmt, at_stmt)) |