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| author | ienkovich <ienkovich@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-05-15 09:38:44 +0000 |
|---|---|---|
| committer | ienkovich <ienkovich@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-05-15 09:38:44 +0000 |
| commit | d86dfeae72d25ab41a4e9fbdeaedda0a4f64611b (patch) | |
| tree | 8014b3e177f88bbb3d858a809ea701bd9dbc1aa5 /gcc/tree-chkp.c | |
| parent | 0da7e4e74fbc94bca32f2157a87c824ca4afa23c (diff) | |
| download | gcc-d86dfeae72d25ab41a4e9fbdeaedda0a4f64611b.tar.gz | |
gcc/
PR middle-end/66134
* tree-chkp.c (chkp_get_orginal_bounds_for_abnormal_copy): New.
(chkp_maybe_copy_and_register_bounds): Don't copy abnormal copy.
gcc/testsuite/
PR middle-end/66134
* gcc.target/i386/mpx/pr66134.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223215 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-chkp.c')
| -rw-r--r-- | gcc/tree-chkp.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/gcc/tree-chkp.c b/gcc/tree-chkp.c index 288470bbe57..17a52bca7e7 100644 --- a/gcc/tree-chkp.c +++ b/gcc/tree-chkp.c @@ -1097,7 +1097,20 @@ chkp_get_bounds_var (tree ptr_var) return bnd_var; } +/* If BND is an abnormal bounds copy, return a copied value. + Otherwise return BND. */ +static tree +chkp_get_orginal_bounds_for_abnormal_copy (tree bnd) +{ + if (bitmap_bit_p (chkp_abnormal_copies, SSA_NAME_VERSION (bnd))) + { + gimple bnd_def = SSA_NAME_DEF_STMT (bnd); + gcc_checking_assert (gimple_code (bnd_def) == GIMPLE_ASSIGN); + bnd = gimple_assign_rhs1 (bnd_def); + } + return bnd; +} /* Register bounds BND for object PTR in global bounds table. A copy of bounds may be created for abnormal ssa names. @@ -1141,11 +1154,7 @@ chkp_maybe_copy_and_register_bounds (tree ptr, tree bnd) /* For abnormal copies we may just find original bounds and use them. */ if (!abnormal_ptr && !SSA_NAME_IS_DEFAULT_DEF (bnd)) - { - gimple bnd_def = SSA_NAME_DEF_STMT (bnd); - gcc_checking_assert (gimple_code (bnd_def) == GIMPLE_ASSIGN); - bnd = gimple_assign_rhs1 (bnd_def); - } + bnd = chkp_get_orginal_bounds_for_abnormal_copy (bnd); /* For undefined values we usually use none bounds value but in case of abnormal edge it may cause coalescing failures. Use default definition of @@ -1177,6 +1186,7 @@ chkp_maybe_copy_and_register_bounds (tree ptr, tree bnd) copy = make_temp_ssa_name (pointer_bounds_type_node, gimple_build_nop (), CHKP_BOUND_TMP_NAME); + bnd = chkp_get_orginal_bounds_for_abnormal_copy (bnd); assign = gimple_build_assign (copy, bnd); if (dump_file && (dump_flags & TDF_DETAILS)) |