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[committed] PA quiet NaN fix
- From: "John David Anglin" <dave at hiauly1 dot hia dot nrc dot ca>
- To: gcc-patches at gcc dot gnu dot org
- Date: Thu, 25 May 2006 18:45:39 -0400 (EDT)
- Subject: [committed] PA quiet NaN fix
The enclosed patch fixes PR target/27627. PA-RISC appears to use the
same format as some MIPS processors for quiet and signaling NaNs. I
say appears because I don't actually have documentation for the MIPS
format; but the current implementation of the MIPS format in real.c
works for PA-RISC.
I've applied the change to the trunk. I believe it would apply
to the other active branches. Tested on hppa-unknown-linux-gnu
and hppa2.0w-hp-hpux11.11 with no regressions.
Dave
--
J. David Anglin dave.anglin@nrc-cnrc.gc.ca
National Research Council of Canada (613) 990-0752 (FAX: 952-6602)
2006-06-24 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
PR target/27627
* pa/pa-modes.def: Use mips_single_format, mips_double_format and
mips_quad_format formats instead of ieee_single_format,
ieee_double_format and ieee_quad_format formats, respectively.
Index: config/pa/pa-modes.def
===================================================================
--- config/pa/pa-modes.def (revision 114019)
+++ config/pa/pa-modes.def (working copy)
@@ -21,8 +21,13 @@
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
+/* PA-RISC has the same reversed quiet bit as MIPS.
+ ??? Why is this called the MIPS format. */
+RESET_FLOAT_FORMAT (SF, mips_single_format);
+RESET_FLOAT_FORMAT (DF, mips_double_format);
+
/* TFmode: IEEE quad floating point (software). */
-FLOAT_MODE (TF, 16, ieee_quad_format);
+FLOAT_MODE (TF, 16, mips_quad_format);
/* HPPA floating comparisons produce distinct condition codes. */
CC_MODE (CCFP);