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| author | Sebastian Pop <pop@cri.ensmp.fr> | 2005-08-21 12:48:23 +0200 |
|---|---|---|
| committer | Sebastian Pop <spop@gcc.gnu.org> | 2005-08-21 10:48:23 +0000 |
| commit | a1596edc4b46231e18e86e225fb19ecb0a1437e1 (patch) | |
| tree | e7c1b97bd3fb20b67e45a396257d670957faddf4 /gcc | |
| parent | 429268fc04441a4a6e31bc9e3c303a8f355f7c43 (diff) | |
| download | gcc-a1596edc4b46231e18e86e225fb19ecb0a1437e1.zip gcc-a1596edc4b46231e18e86e225fb19ecb0a1437e1.tar.gz gcc-a1596edc4b46231e18e86e225fb19ecb0a1437e1.tar.bz2 | |
re PR tree-optimization/23434 (ICE: Segmentation fault compiling gsl1.5 at -O2)
PR tree-optimization/23434
* tree-ssa-loop-niter.c (proved_non_wrapping_p): Give up when
the iteration bound is not an INTEGER_CST.
From-SVN: r103315
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/pr23434.c | 19 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 4 |
3 files changed, 29 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 29c5316..6e2b4d8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2005-08-21 Sebastian Pop <pop@cri.ensmp.fr> + + PR tree-optimization/23434 + * tree-ssa-loop-niter.c (proved_non_wrapping_p): Give up when + the iteration bound is not an INTEGER_CST. + 2005-08-21 Dorit Nuzman <dorit@il.ibm.com> * tree-vect-transform.c (get_initial_def_for_reduction): Set diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr23434.c b/gcc/testsuite/gcc.dg/tree-ssa/pr23434.c new file mode 100644 index 0000000..a21b955 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr23434.c @@ -0,0 +1,19 @@ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ + +cblas_csyr2k (int N, void *A, int lda, float *B, int ldb, float *C, int k) +{ + int i, j; + for (;; k ++) + { + for (i = 0; i < N; i ++) + { + float t = ((float * ) A) [i]; + for (j = i; j < N; j ++) + { + C [i + j] = B [ldb] * ((float *) A) [k]; + C [lda] = 0 ; + } + } + } +} diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index fc5491b..a8e4737 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)) |