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| author | Andrew Haley <aph@redhat.com> | 2004-08-16 13:03:51 +0000 |
|---|---|---|
| committer | Andrew Haley <aph@gcc.gnu.org> | 2004-08-16 13:03:51 +0000 |
| commit | a20f4d83c8ec7fb99c8532a84db5204fe00cf71d (patch) | |
| tree | 6eec27556d5261ee7e2dfb3a7b78ae656b9db359 /gcc | |
| parent | f699e4541433ca9c8af8a4cad64d7a859b9fc782 (diff) | |
| download | gcc-a20f4d83c8ec7fb99c8532a84db5204fe00cf71d.zip gcc-a20f4d83c8ec7fb99c8532a84db5204fe00cf71d.tar.gz gcc-a20f4d83c8ec7fb99c8532a84db5204fe00cf71d.tar.bz2 | |
jcf-write.c (find_constant_index): Canonicalize NaNs when generating bytecode.
2004-08-16 Andrew Haley <aph@redhat.com>
* jcf-write.c (find_constant_index): Canonicalize NaNs when
generating bytecode.
From-SVN: r86053
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/java/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/java/jcf-write.c | 13 |
2 files changed, 18 insertions, 0 deletions
diff --git a/gcc/java/ChangeLog b/gcc/java/ChangeLog index 4e0dc7e..761c886 100644 --- a/gcc/java/ChangeLog +++ b/gcc/java/ChangeLog @@ -1,3 +1,8 @@ +2004-08-16 Andrew Haley <aph@redhat.com> + + * jcf-write.c (find_constant_index): Canonicalize NaNs when + generating bytecode. + 2004-08-16 Elliot Lee <sopwith@redhat.com> PR java/9677 diff --git a/gcc/java/jcf-write.c b/gcc/java/jcf-write.c index d775a81..7b5bdcc 100644 --- a/gcc/java/jcf-write.c +++ b/gcc/java/jcf-write.c @@ -798,6 +798,19 @@ find_constant_index (tree value, struct jcf_partial *state) { long words[2]; + /* IEEE NaN can have many values, but the Java VM spec defines a + canonical NaN. */ + if (flag_emit_class_files + && REAL_VALUE_ISNAN (TREE_REAL_CST (value))) + { + if (TYPE_PRECISION (TREE_TYPE (value)) == 32) + return find_constant1 (&state->cpool, CONSTANT_Float, + 0x7fc00000); + else + return find_constant2 (&state->cpool, CONSTANT_Double, + 0x7ff80000, 0x00000000); + } + real_to_target (words, &TREE_REAL_CST (value), TYPE_MODE (TREE_TYPE (value))); words[0] &= 0xffffffff; |