diff options
| author | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-02-19 22:59:33 +0000 |
|---|---|---|
| committer | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-02-19 22:59:33 +0000 |
| commit | c7590f7e05a9a2390517c30feaddbcff9164f008 (patch) | |
| tree | a66699c948423365ed0ae6efa1aedf2907f37176 /gcc | |
| parent | 96dadd9cbb2fefdee054045bf8780bd72dc8f379 (diff) | |
| download | gcc-c7590f7e05a9a2390517c30feaddbcff9164f008.tar.gz | |
* fold-const.c (fold_real_zero_addition_p): Don't fold a zero
addition in the presence of signaling NaNs.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@63133 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 12 | ||||
| -rw-r--r-- | gcc/fold-const.c | 4 |
2 files changed, 13 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 26807a1c899..da21d117fae 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2003-02-19 Roger Sayle <roger@eyesopen.com> + + * fold-const.c (fold_real_zero_addition_p): Don't fold a zero + addition in the presence of signaling NaNs. + 2003-02-19 Krister Walfridsson <cato@df.lth.se> * tm.texi (INIT_CUMULATIVE_ARGS): Fix typo. @@ -109,9 +114,10 @@ Tue Feb 18 23:50:59 CET 2003 Jan Hubicka <jh@suse.cz> (cgraph_expand_function): Rewrite. 2003-02-18 Matt Austern <austern@apple.com> + * toplev.c, langhooks.c, langhooks-def.h: Move write_global_declarations from toplev.c to langhooks.c. - + 2003-02-18 Kazu Hirata <kazu@cs.umass.edu> * config/h8300/h8300.c (general_operand_src): Always check @@ -168,8 +174,8 @@ Tue Feb 18 23:50:59 CET 2003 Jan Hubicka <jh@suse.cz> Tue Feb 18 20:15:54 2003 J"orn Rennecke <joern.rennecke@superh.com> - * sh.c (calc_live_regs): Also check GET_CODE when checking if initial value - for PR_REG is still the PR_REG register. + * sh.c (calc_live_regs): Also check GET_CODE when checking if + initial value for PR_REG is still the PR_REG register. 2003-02-18 Jim Wilson <wilson@redhat.com> diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 5dfa1e413ec..6b50a86a097 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -4642,6 +4642,10 @@ fold_real_zero_addition_p (type, addend, negate) if (!real_zerop (addend)) return false; + /* Don't allow the fold with -fsignaling-nans. */ + if (HONOR_SNANS (TYPE_MODE (type))) + return false; + /* Allow the fold if zeros aren't signed, or their sign isn't important. */ if (!HONOR_SIGNED_ZEROS (TYPE_MODE (type))) return true; |