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re PR java/19907 (Incorrect code generated for ManifestElement.java)

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2005-02-14  Andrew Haley  <aph@redhat.com>

        PR java/19907
        * expr.c (expand_byte_code): Call promote_arguments().
        (promote_arguments): New function.
        * decl.c (check_local_unnamed_variable): Remve special case for
        new verifier.
        (find_local_variable): Promote all boolean types to int
        when searching for local variable decls.

From-SVN: r95015
This commit is contained in:
Andrew Haley 2005-02-14 14:58:22 +00:00 committed by Andrew Haley
parent d633cfe524
commit 891df09c56
3 changed files with 50 additions and 13 deletions
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10
gcc/java/ChangeLog
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@ -1,3 +1,13 @@
2005-02-14 Andrew Haley <aph@redhat.com>
PR java/19907
* expr.c (expand_byte_code): Call promote_arguments().
(promote_arguments): New function.
* decl.c (check_local_unnamed_variable): Remve special case for
new verifier.
(find_local_variable): Promote all boolean types to int
when searching for local variable decls.
2005-02-12 Kazu Hirata <kazu@cs.umass.edu>
* builtins.c, java-except.h, jcf-parse.c, jv-scan.c, lex.c,

26
gcc/java/decl.c
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@ -263,24 +263,14 @@ check_local_unnamed_variable (tree best, tree decl, tree type)
initially held a pointer arg -- or vice versa -- we create a
new VAR_DECL.
???: As long as verification is correct, this will be a
???: As long as verification is correct, this will be a
compatible type. But maybe we should create a dummy variable
and replace all references to it with the DECL and a
NOP_EXPR.
NOP_EXPR.
*/
|| (TREE_CODE (decl_type) == POINTER_TYPE
&& TREE_CODE (decl) == PARM_DECL
&& TREE_CODE (type) == POINTER_TYPE)
/* The new verifier requires a similar treatment in the
situation where the parameter has an integral type which
promotes to `int'. */
|| (flag_new_verifier
&& TREE_CODE (decl) == PARM_DECL
&& INTEGRAL_TYPE_P (decl_type)
&& TYPE_PRECISION (decl_type) <= 32
&& INTEGRAL_TYPE_P (type)
&& TYPE_PRECISION (type) <= 32))
&& TREE_CODE (type) == POINTER_TYPE))
{
if (best == NULL_TREE
|| (decl_type == type && TREE_TYPE (best) != type))
@ -312,6 +302,16 @@ find_local_variable (int index, tree type, int pc ATTRIBUTE_UNUSED)
tmp = DECL_LOCAL_SLOT_CHAIN (tmp);
}
/* gcj has a function called promote_type(), which is used by both
the bytecode compiler and the source compiler. Unfortunately,
the type systems for the Java VM and the Java language are not
the same: a boolean in the VM promotes to an int, not to a wide
boolean. If our caller wants something to hold a boolean, that
had better be an int, because that slot might be re-used
later in integer context. */
if (TREE_CODE (type) == BOOLEAN_TYPE)
type = integer_type_node;
/* If we don't find a match, create one with the type passed in.
The name of the variable is #n#m, which n is the variable index
in the local variable area and m is a dummy identifier for

27
gcc/java/expr.c
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@ -86,6 +86,7 @@ static void java_stack_pop (int);
static tree build_java_throw_out_of_bounds_exception (tree);
static tree build_java_check_indexed_type (tree, tree);
static unsigned char peek_opcode_at_pc (struct JCF *, int, int);
static void promote_arguments (void);
static GTY(()) tree operand_type[59];
@ -2961,6 +2962,8 @@ expand_byte_code (JCF *jcf, tree method)
return;
}
promote_arguments ();
/* Translate bytecodes. */
linenumber_pointer = linenumber_table;
for (PC = 0; PC < length;)
@ -3643,4 +3646,28 @@ build_java_empty_stmt (void)
return t;
}
/* Promote all args of integral type before generating any code. */
static void
promote_arguments (void)
{
int i;
tree arg;
for (arg = DECL_ARGUMENTS (current_function_decl), i = 0;
arg != NULL_TREE; arg = TREE_CHAIN (arg), i++)
{
tree arg_type = TREE_TYPE (arg);
if (INTEGRAL_TYPE_P (arg_type)
&& TYPE_PRECISION (arg_type) < 32)
{
tree copy = find_local_variable (i, integer_type_node, -1);
java_add_stmt (build2 (MODIFY_EXPR, integer_type_node,
copy,
fold_convert (integer_type_node, arg)));
}
if (TYPE_IS_WIDE (arg_type))
i++;
}
}
#include "gt-java-expr.h"