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| author | Tom de Vries <tom@codesourcery.com> | 2011-09-26 12:36:56 +0000 |
|---|---|---|
| committer | Tom de Vries <vries@gcc.gnu.org> | 2011-09-26 12:36:56 +0000 |
| commit | 703ffc3005c21d95d957e2fdc89f0c54f937c9a1 (patch) | |
| tree | 8d02f7d1f0d75bf09d203369ba6db35e46bacc12 /gcc/tree-ssa-ccp.c | |
| parent | 750db0248d1fe522587cb677402a839b68185d58 (diff) | |
| download | gcc-703ffc3005c21d95d957e2fdc89f0c54f937c9a1.zip gcc-703ffc3005c21d95d957e2fdc89f0c54f937c9a1.tar.gz gcc-703ffc3005c21d95d957e2fdc89f0c54f937c9a1.tar.bz2 | |
tree-ssa-alias.h (pt_solution_singleton_p): Declare.
2011-09-26 Tom de Vries <tom@codesourcery.com>
* tree-ssa-alias.h (pt_solution_singleton_p): Declare.
* tree-ssa-structalias.c (pt_solution_singleton_p): New function.
* tree-ssa-ccp.c (fold_builtin_alloca_for_var): Set points-to solution
of new var.
From-SVN: r179193
Diffstat (limited to 'gcc/tree-ssa-ccp.c')
| -rw-r--r-- | gcc/tree-ssa-ccp.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index fc59d38..b577404 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -1729,6 +1729,17 @@ fold_builtin_alloca_for_var (gimple stmt) array_type = build_array_type_nelts (elem_type, n_elem); var = create_tmp_var (array_type, NULL); DECL_ALIGN (var) = align; + { + struct ptr_info_def *pi = SSA_NAME_PTR_INFO (lhs); + if (pi != NULL && !pi->pt.anything) + { + bool singleton_p; + unsigned uid; + singleton_p = pt_solution_singleton_p (&pi->pt, &uid); + gcc_assert (singleton_p); + SET_DECL_PT_UID (var, uid); + } + } /* Fold alloca to the address of the array. */ return fold_convert (TREE_TYPE (lhs), build_fold_addr_expr (var)); |