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| author | Tom Tromey <tromey@redhat.com> | 2001-07-12 17:06:40 +0000 |
|---|---|---|
| committer | Tom Tromey <tromey@gcc.gnu.org> | 2001-07-12 17:06:40 +0000 |
| commit | a3cb5122ec0765cc4d4764d4ab59d113e6c09459 (patch) | |
| tree | 64e18cbc4658d24afea6fb22c62c5c3b3747a653 /gcc/java/expr.c | |
| parent | b9aaec62b7c3838fc80744a99a98792870a1e204 (diff) | |
| download | gcc-a3cb5122ec0765cc4d4764d4ab59d113e6c09459.zip gcc-a3cb5122ec0765cc4d4764d4ab59d113e6c09459.tar.gz gcc-a3cb5122ec0765cc4d4764d4ab59d113e6c09459.tar.bz2 | |
expr.c (expand_load_internal): New function.
* expr.c (expand_load_internal): New function.
(LOAD_INTERNAL): Use it.
From-SVN: r43969
Diffstat (limited to 'gcc/java/expr.c')
| -rw-r--r-- | gcc/java/expr.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/gcc/java/expr.c b/gcc/java/expr.c index e9af7fc..c9b4a3c 100644 --- a/gcc/java/expr.c +++ b/gcc/java/expr.c @@ -57,6 +57,7 @@ static void expand_java_array_length PARAMS ((void)); static tree build_java_monitor PARAMS ((tree, tree)); static void expand_java_pushc PARAMS ((int, tree)); static void expand_java_return PARAMS ((tree)); +static void expand_load_internal PARAMS ((int, tree, int)); static void expand_java_NEW PARAMS ((tree)); static void expand_java_INSTANCEOF PARAMS ((tree)); static void expand_java_CHECKCAST PARAMS ((tree)); @@ -1086,6 +1087,32 @@ expand_java_return (type) } } +static void +expand_load_internal (index, type, pc) + int index; + tree type; + int pc; +{ + tree copy; + tree var = find_local_variable (index, type, pc); + + /* Now VAR is the VAR_DECL (or PARM_DECL) that we are going to push + on the stack. If there is an assignment to this VAR_DECL between + the stack push and the use, then the wrong code could be + generated. To avoid this we create a new local and copy our + value into it. Then we push this new local on the stack. + Hopefully this all gets optimized out. */ + copy = build_decl (VAR_DECL, NULL_TREE, type); + DECL_CONTEXT (copy) = current_function_decl; + layout_decl (copy, 0); + DECL_REGISTER (copy) = 1; + expand_decl (copy); + MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (copy); + DECL_INITIAL (copy) = var; + expand_decl_init (copy); + push_value (copy); +} + tree build_address_of (value) tree value; @@ -2841,7 +2868,7 @@ process_jvm_instruction (PC, byte_ops, length) /* internal macro added for use by the WIDE case */ #define LOAD_INTERNAL(OPTYPE, OPVALUE) \ - push_value (find_local_variable (OPVALUE, type_map[OPVALUE], oldpc)); + expand_load_internal (OPVALUE, type_map[OPVALUE], oldpc); /* Push local variable onto the opcode stack. */ #define LOAD(OPERAND_TYPE, OPERAND_VALUE) \ |