diff options
| author | Richard Biener <rguenther@suse.de> | 2018-10-18 08:51:32 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2018-10-18 08:51:32 +0000 |
| commit | 39f7ea2368560f87a4b5f6a635f23814e58d8444 (patch) | |
| tree | 333dd924a7d596bc8316cfab2d17de498a6854a9 /gcc/tree-chrec.c | |
| parent | 4cb439c3ab595b5f33cf9b28e05aa8e3787ad683 (diff) | |
| download | gcc-39f7ea2368560f87a4b5f6a635f23814e58d8444.zip gcc-39f7ea2368560f87a4b5f6a635f23814e58d8444.tar.gz gcc-39f7ea2368560f87a4b5f6a635f23814e58d8444.tar.bz2 | |
re PR tree-optimization/87087 (Optimization hangs up and consumes over 15Gb of memory)
2018-10-18 Richard Biener <rguenther@suse.de>
PR middle-end/87087
Revert
2018-02-07 Richard Biener <rguenther@suse.de>
PR tree-optimization/84204
* tree-chrec.c (chrec_fold_plus_1): Remove size limiting in
this place.
* gcc.dg/torture/pr87087.c: New testcase.
* gcc.dg/graphite/pr84204.c: XFAIL.
* gcc.dg/graphite/pr85935.c: Likewise.
From-SVN: r265262
Diffstat (limited to 'gcc/tree-chrec.c')
| -rw-r--r-- | gcc/tree-chrec.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/tree-chrec.c b/gcc/tree-chrec.c index 04d33ef..896ff35 100644 --- a/gcc/tree-chrec.c +++ b/gcc/tree-chrec.c @@ -375,10 +375,12 @@ chrec_fold_plus_1 (enum tree_code code, tree type, default: { - if (tree_contains_chrecs (op0, NULL) - || tree_contains_chrecs (op1, NULL)) + int size = 0; + if ((tree_contains_chrecs (op0, &size) + || tree_contains_chrecs (op1, &size)) + && size < PARAM_VALUE (PARAM_SCEV_MAX_EXPR_SIZE)) return build2 (code, type, op0, op1); - else + else if (size < PARAM_VALUE (PARAM_SCEV_MAX_EXPR_SIZE)) { if (code == POINTER_PLUS_EXPR) return fold_build_pointer_plus (fold_convert (type, op0), @@ -388,6 +390,8 @@ chrec_fold_plus_1 (enum tree_code code, tree type, fold_convert (type, op0), fold_convert (type, op1)); } + else + return chrec_dont_know; } } } |