diff options
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 35 |
1 files changed, 35 insertions, 0 deletions
@@ -6421,6 +6421,19 @@ highest_pow2_factor_for_target (tree target, tree exp) return MAX (factor, target_align); } +/* Return &VAR expression for emulated thread local VAR. */ + +static tree +emutls_var_address (tree var) +{ + tree emuvar = emutls_decl (var); + tree fn = built_in_decls [BUILT_IN_EMUTLS_GET_ADDRESS]; + tree arg = build_fold_addr_expr_with_type (emuvar, ptr_type_node); + tree arglist = build_tree_list (NULL_TREE, arg); + tree call = build_function_call_expr (fn, arglist); + return fold_convert (build_pointer_type (TREE_TYPE (var)), call); +} + /* Expands variable VAR. */ void @@ -6549,6 +6562,18 @@ expand_expr_addr_expr_1 (tree exp, rtx target, enum machine_mode tmode, inner = TREE_OPERAND (exp, 0); break; + case VAR_DECL: + /* TLS emulation hook - replace __thread VAR's &VAR with + __emutls_get_address (&_emutls.VAR). */ + if (! targetm.have_tls + && TREE_CODE (exp) == VAR_DECL + && DECL_THREAD_LOCAL_P (exp)) + { + exp = emutls_var_address (exp); + return expand_expr (exp, target, tmode, modifier); + } + /* Fall through. */ + default: /* If the object is a DECL, then expand it for its rtl. Don't bypass expand_expr, as that can have various side effects; LABEL_DECLs for @@ -6924,6 +6949,16 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode, && (TREE_STATIC (exp) || DECL_EXTERNAL (exp))) layout_decl (exp, 0); + /* TLS emulation hook - replace __thread vars with + *__emutls_get_address (&_emutls.var). */ + if (! targetm.have_tls + && TREE_CODE (exp) == VAR_DECL + && DECL_THREAD_LOCAL_P (exp)) + { + exp = build_fold_indirect_ref (emutls_var_address (exp)); + return expand_expr_real_1 (exp, target, tmode, modifier, NULL); + } + /* ... fall through ... */ case FUNCTION_DECL: |