diff options
Diffstat (limited to 'gcc/tree-ssanames.c')
| -rw-r--r-- | gcc/tree-ssanames.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/tree-ssanames.c b/gcc/tree-ssanames.c index a89d6087f38..79e1a764e73 100644 --- a/gcc/tree-ssanames.c +++ b/gcc/tree-ssanames.c @@ -172,6 +172,7 @@ tree make_ssa_name (tree var, tree stmt) { tree t; + ssa_imm_use_t *imm; gcc_assert (DECL_P (var) || TREE_CODE (var) == INDIRECT_REF); @@ -207,6 +208,11 @@ make_ssa_name (tree var, tree stmt) SSA_NAME_DEF_STMT (t) = stmt; SSA_NAME_PTR_INFO (t) = NULL; SSA_NAME_IN_FREE_LIST (t) = 0; + imm = &(SSA_NAME_IMM_USE_NODE (t)); + imm->use = NULL; + imm->prev = imm; + imm->next = imm; + imm->stmt = t; return t; } @@ -248,10 +254,26 @@ release_ssa_name (tree var) { tree saved_ssa_name_var = SSA_NAME_VAR (var); int saved_ssa_name_version = SSA_NAME_VERSION (var); + ssa_imm_use_t *imm = &(SSA_NAME_IMM_USE_NODE (var)); + +#ifdef ENABLE_CHECKING + verify_imm_links (stderr, var); +#endif + while (imm->next != imm) + { + delink_imm_use (imm->next); + } +#ifdef ENABLE_CHECKING + if (imm->next != imm) + abort(); +#endif VARRAY_TREE (ssa_names, SSA_NAME_VERSION (var)) = NULL; memset (var, 0, tree_size (var)); + imm->prev = imm; + imm->next = imm; + imm->stmt = var; /* First put back the right tree node so that the tree checking macros do not complain. */ TREE_SET_CODE (var, SSA_NAME); |