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| author | Richard Biener <rguenther@suse.de> | 2017-09-04 14:10:11 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2017-09-04 14:10:11 +0000 |
| commit | 11a82e2597c54016345beb99e5339e37851c7d59 (patch) | |
| tree | 80cc35078ff2a50b99bcac103fa940b55569c370 /gcc/tree-vect-stmts.c | |
| parent | bc7fe95200214ce70419fde6f965dc88bbd645a6 (diff) | |
| download | gcc-11a82e2597c54016345beb99e5339e37851c7d59.zip gcc-11a82e2597c54016345beb99e5339e37851c7d59.tar.gz gcc-11a82e2597c54016345beb99e5339e37851c7d59.tar.bz2 | |
re PR c++/82084 (ICE: constructing wstring with -O3)
2017-09-04 Richard Biener <rguenther@suse.de>
PR tree-optimization/82084
* fold-const.h (can_native_encode_string_p): Declare.
* fold-const.c (can_native_encode_string_p): Factor out from ...
(native_encode_string): ... here.
* tree-vect-stmts.c (vectorizable_store): Call it to avoid
vectorizing stores from constants we later cannot handle.
* g++.dg/torture/pr82084.C: New testcase.
From-SVN: r251661
Diffstat (limited to 'gcc/tree-vect-stmts.c')
| -rw-r--r-- | gcc/tree-vect-stmts.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c index c9a0aaf..ce43893 100644 --- a/gcc/tree-vect-stmts.c +++ b/gcc/tree-vect-stmts.c @@ -5733,6 +5733,12 @@ vectorizable_store (gimple *stmt, gimple_stmt_iterator *gsi, gimple **vec_stmt, op = gimple_assign_rhs1 (stmt); + /* In the case this is a store from a STRING_CST make sure + native_encode_expr can handle it. */ + if (TREE_CODE (op) == STRING_CST + && ! can_native_encode_string_p (op)) + return false; + if (!vect_is_simple_use (op, vinfo, &def_stmt, &dt, &rhs_vectype)) { if (dump_enabled_p ()) |