diff options
Diffstat (limited to 'gnu/usr.bin/gcc/stmt.c')
| -rw-r--r-- | gnu/usr.bin/gcc/stmt.c | 37 |
1 files changed, 24 insertions, 13 deletions
diff --git a/gnu/usr.bin/gcc/stmt.c b/gnu/usr.bin/gcc/stmt.c index 9451012d13b..02e4bf23b69 100644 --- a/gnu/usr.bin/gcc/stmt.c +++ b/gnu/usr.bin/gcc/stmt.c @@ -1,5 +1,5 @@ /* Expands front end tree to back end RTL for GNU C-Compiler - Copyright (C) 1987, 88, 89, 92-6, 1997 Free Software Foundation, Inc. + Copyright (C) 1987, 88, 89, 92-97, 1998 Free Software Foundation, Inc. This file is part of GNU CC. @@ -1421,6 +1421,10 @@ expand_asm_operands (string, outputs, inputs, clobbers, vol, filename, line) /* The insn we have emitted. */ rtx insn; + /* An ASM with no outputs needs to be treated as volatile, for now. */ + if (noutputs == 0) + vol = 1; + if (output_bytecode) { error ("`asm' is invalid when generating bytecode"); @@ -1566,9 +1570,7 @@ expand_asm_operands (string, outputs, inputs, clobbers, vol, filename, line) TREE_STRING_POINTER (string), "", 0, argvec, constraints, filename, line); - /* The only use of BODY is if no outputs are specified, so set - it volatile, at least for now. */ - MEM_VOLATILE_P (body) = 1; + MEM_VOLATILE_P (body) = vol; /* Eval the inputs and put them into ARGVEC. Put their constraints into ASM_INPUTs and store in CONSTRAINTS. */ @@ -3134,10 +3136,8 @@ expand_start_bindings (exit_flag) nesting_stack = thisblock; if (!output_bytecode) - { - /* Make a new level for allocating stack slots. */ - push_temp_slots (); - } + /* Make a new level for allocating stack slots. */ + push_temp_slots_for_block (); } /* Specify the scope of temporaries created by TARGET_EXPRs. Similar @@ -3599,7 +3599,9 @@ expand_decl (decl) && TREE_CODE (type) == REAL_TYPE) && ! TREE_THIS_VOLATILE (decl) && ! TREE_ADDRESSABLE (decl) - && (DECL_REGISTER (decl) || ! obey_regdecls)) + && (DECL_REGISTER (decl) || ! obey_regdecls) + /* if -fcheck-memory-usage, check all variables. */ + && ! flag_check_memory_usage) { /* Automatic variable that can go in a register. */ int unsignedp = TREE_UNSIGNED (type); @@ -3609,7 +3611,7 @@ expand_decl (decl) DECL_RTL (decl) = gen_reg_rtx (reg_mode); mark_user_reg (DECL_RTL (decl)); - if (TREE_CODE (type) == POINTER_TYPE) + if (POINTER_TYPE_P (type)) mark_reg_pointer (DECL_RTL (decl), (TYPE_ALIGN (TREE_TYPE (TREE_TYPE (decl))) / BITS_PER_UNIT)); @@ -3813,8 +3815,9 @@ expand_decl_init (decl) if (DECL_INITIAL (decl) == error_mark_node) { enum tree_code code = TREE_CODE (TREE_TYPE (decl)); + if (code == INTEGER_TYPE || code == REAL_TYPE || code == ENUMERAL_TYPE - || code == POINTER_TYPE) + || code == POINTER_TYPE || code == REFERENCE_TYPE) expand_assignment (decl, convert (TREE_TYPE (decl), integer_zero_node), 0, 0); emit_queue (); @@ -3896,8 +3899,7 @@ bc_expand_decl_init (decl) enum tree_code code = TREE_CODE (TREE_TYPE (decl)); if (code == INTEGER_TYPE || code == REAL_TYPE || code == ENUMERAL_TYPE - || code == POINTER_TYPE) - + || code == POINTER_TYPE || code == REFERENCE_TYPE) expand_assignment (TREE_TYPE (decl), decl, 0, 0); } else if (DECL_INITIAL (decl)) @@ -4240,7 +4242,16 @@ expand_cleanups (list, dont_do, in_fixup, reachable) the target. Though the cleanups are expanded multiple times, the control paths are non-overlapping so the cleanups will not be executed twice. */ + + /* We may need to protect fixups with rethrow regions. */ + int protect = (in_fixup && ! TREE_ADDRESSABLE (tail)); + + if (protect) + expand_fixup_region_start (); + expand_expr (TREE_VALUE (tail), const0_rtx, VOIDmode, 0); + if (protect) + expand_fixup_region_end (TREE_VALUE (tail)); free_temp_slots (); } } |