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| author | Jakub Jelinek <jakub@redhat.com> | 2016-06-04 16:50:57 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2016-06-04 16:50:57 +0200 |
| commit | 1927a96372b003fe6217c64241bb69d838a67dc8 (patch) | |
| tree | befd4674cc10cc316c209d081ba0bcebdd77e8c8 /gcc | |
| parent | 56812845490199b04123d9faf55cc2b338e6dfb9 (diff) | |
| download | gcc-1927a96372b003fe6217c64241bb69d838a67dc8.zip gcc-1927a96372b003fe6217c64241bb69d838a67dc8.tar.gz gcc-1927a96372b003fe6217c64241bb69d838a67dc8.tar.bz2 | |
re PR tree-optimization/71405 (ICE on valid C++ code at -Os and above on x86_64-linux-gnu: verify_gimple failed)
PR tree-optimization/71405
* tree-ssa.c (execute_update_addresses_taken): For clobber with
incompatible type, build a new clobber with the right type instead
of building a VIEW_CONVERT_EXPR around it.
* g++.dg/torture/pr71405.C: New test.
From-SVN: r237091
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/torture/pr71405.C | 22 | ||||
| -rw-r--r-- | gcc/tree-ssa.c | 13 |
4 files changed, 44 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3e11cb9..e07d2de 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2016-06-04 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/71405 + * tree-ssa.c (execute_update_addresses_taken): For clobber with + incompatible type, build a new clobber with the right type instead + of building a VIEW_CONVERT_EXPR around it. + 2016-06-04 Oleg Endo <olegendo@gcc.gnu.org> PR tree-optimization/52171 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 94b4a33..c272ade 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-06-04 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/71405 + * g++.dg/torture/pr71405.C: New test. + 2016-06-04 Paolo Carlini <paolo.carlini@oracle.com> PR c++/70202 diff --git a/gcc/testsuite/g++.dg/torture/pr71405.C b/gcc/testsuite/g++.dg/torture/pr71405.C new file mode 100644 index 0000000..5260243 --- /dev/null +++ b/gcc/testsuite/g++.dg/torture/pr71405.C @@ -0,0 +1,22 @@ +// PR tree-optimization/71405 +// { dg-do compile } + +struct C +{ + C () {} + int i; +}; + +void * +operator new (__SIZE_TYPE__ x, void *y) +{ + return y; +} + +int +main () +{ + int a; + new (&a) C; + return a; +} diff --git a/gcc/tree-ssa.c b/gcc/tree-ssa.c index a53322d..2f3caf3 100644 --- a/gcc/tree-ssa.c +++ b/gcc/tree-ssa.c @@ -1622,9 +1622,16 @@ execute_update_addresses_taken (void) if (gimple_assign_lhs (stmt) != lhs && !useless_type_conversion_p (TREE_TYPE (lhs), TREE_TYPE (rhs))) - rhs = fold_build1 (VIEW_CONVERT_EXPR, - TREE_TYPE (lhs), rhs); - + { + if (gimple_clobber_p (stmt)) + { + rhs = build_constructor (TREE_TYPE (lhs), NULL); + TREE_THIS_VOLATILE (rhs) = 1; + } + else + rhs = fold_build1 (VIEW_CONVERT_EXPR, + TREE_TYPE (lhs), rhs); + } if (gimple_assign_lhs (stmt) != lhs) gimple_assign_set_lhs (stmt, lhs); |