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re GNATS gcj/82 (code generation for jvm IRETURN fails on boolean/byte/short methods if INT_TYPE_SIZE < 32)

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Wed Nov 03 02:16:00 PST 1999  Pekka Nikander  <pekka.nikander@hut.fi>

	* decl.c (INT_TYPE_SIZE): Define if necessary.
	(expand_java_return): Handle the case of a native integer smaller
 	than a JVM integer.

(Fix to the Java PR #82:
  http://sourceware.cygnus.com/ml/java-prs/1999-q4/msg00078.html)

From-SVN: r32051
This commit is contained in:
Pekka Nikander 2000-02-18 20:17:37 +02:00 committed by Alexandre Petit-Bianco
parent 8b97e23b76
commit a0f4cca642
2 changed files with 20 additions and 0 deletions
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6
gcc/java/ChangeLog
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@ -1,3 +1,9 @@
Wed Nov 03 02:16:00 PST 1999 Pekka Nikander <pekka.nikander@hut.fi>
* decl.c (INT_TYPE_SIZE): Define if necessary.
(expand_java_return): Handle the case of a native integer smaller
than a JVM integer.
2000-02-18 Martin von Loewis <loewis@informatik.hu-berlin.de>
* gjavah.c (help): Use GCCBUGURL.

14
gcc/java/expr.c
View File

@ -981,6 +981,10 @@ expand_java_pushc (ival, type)
push_value (value);
}
#ifndef INT_TYPE_SIZE
#define INT_TYPE_SIZE BITS_PER_WORD
#endif
static void
expand_java_return (type)
tree type;
@ -992,6 +996,16 @@ expand_java_return (type)
tree retval = pop_value (type);
tree res = DECL_RESULT (current_function_decl);
retval = build (MODIFY_EXPR, TREE_TYPE (res), res, retval);
/* Handle the situation where the native integer type is smaller
than the JVM integer. It can happen for many cross compilers.
The whole if expression just goes away if INT_TYPE_SIZE < 32
is false. */
if (INT_TYPE_SIZE < 32
&& (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (res)))
< GET_MODE_SIZE (TYPE_MODE (type))))
retval = build1(NOP_EXPR, TREE_TYPE(res), retval);
TREE_SIDE_EFFECTS (retval) = 1;
expand_return (retval);
}