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| author | Teresa Johnson <tejohnson@google.com> | 2014-11-13 15:36:48 +0000 |
|---|---|---|
| committer | Teresa Johnson <tejohnson@gcc.gnu.org> | 2014-11-13 15:36:48 +0000 |
| commit | 37e10165c13e9860dabbf6eaf85481debec459e9 (patch) | |
| tree | b15747ba3fade3c6296ce7777f365b466280d4b7 /gcc/tree.c | |
| parent | 6fad471b8f1a62c385624bf4cecbd57c397bbe91 (diff) | |
| download | gcc-37e10165c13e9860dabbf6eaf85481debec459e9.zip gcc-37e10165c13e9860dabbf6eaf85481debec459e9.tar.gz gcc-37e10165c13e9860dabbf6eaf85481debec459e9.tar.bz2 | |
re PR tree-optimization/63841 (Incorrect strlen optimization after complete unroll)
2014-11-13 Teresa Johnson <tejohnson@google.com>
gcc:
PR tree-optimization/63841
* tree.c (initializer_zerop): A clobber does not zero initialize.
gcc/testsuite:
PR tree-optimization/63841
* g++.dg/tree-ssa/pr63841.C: New test.
From-SVN: r217505
Diffstat (limited to 'gcc/tree.c')
| -rw-r--r-- | gcc/tree.c | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -10330,6 +10330,8 @@ initializer_zerop (const_tree init) { unsigned HOST_WIDE_INT idx; + if (TREE_CLOBBER_P (init)) + return false; FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (init), idx, elt) if (!initializer_zerop (elt)) return false; |