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| author | aph <aph@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-08-16 13:03:51 +0000 |
|---|---|---|
| committer | aph <aph@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-08-16 13:03:51 +0000 |
| commit | 91c237c4f3491c15083135bf8e2e2a31fa800e42 (patch) | |
| tree | 6eec27556d5261ee7e2dfb3a7b78ae656b9db359 /gcc/java/jcf-write.c | |
| parent | 0750f30d61b075cc98ecfb9d750ff20d1e46bb7c (diff) | |
| download | ppe42-gcc-91c237c4f3491c15083135bf8e2e2a31fa800e42.tar.gz ppe42-gcc-91c237c4f3491c15083135bf8e2e2a31fa800e42.zip | |
2004-08-16 Andrew Haley <aph@redhat.com>
* jcf-write.c (find_constant_index): Canonicalize NaNs when
generating bytecode.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@86053 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/java/jcf-write.c')
| -rw-r--r-- | gcc/java/jcf-write.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/java/jcf-write.c b/gcc/java/jcf-write.c index d775a816ff2..7b5bdcce7f1 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; |
