This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
[PATCH] ppc: Fix modf (sNaN) for pre-POWER5+ CPU (bug 20240).
- From: Aurelien Jarno <aurelien at aurel32 dot net>
- To: libc-alpha at sourceware dot org
- Cc: Aurelien Jarno <aurelien at aurel32 dot net>
- Date: Wed, 6 Jul 2016 15:24:36 +0200
- Subject: [PATCH] ppc: Fix modf (sNaN) for pre-POWER5+ CPU (bug 20240).
- Authentication-results: sourceware.org; auth=none
Commit a6a4395d fixed modf implementation by compiling s_modf.c and
s_modff.c with -fsignaling-nans. However these files are also included
from the pre-POWER5+ implementation, and thus these files should also
be compiled with -fsignaling-nans.
Changelog:
[BZ #20240]
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
(CFLAGS-s_modf-ppc32.c): New variable.
(CFLAGS-s_modff-ppc32.c): Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
(CFLAGS-s_modf-ppc64.c): Likewise.
(CFLAGS-s_modff-ppc64.c): Likewise.
---
ChangeLog | 10 ++++++++++
sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile | 5 +++++
sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile | 5 +++++
3 files changed, 20 insertions(+)
diff --git a/ChangeLog b/ChangeLog
index 72c5549..28aa60a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2016-07-06 Aurelien Jarno <aurelien@aurel32.net>
+
+ [BZ #20240]
+ * sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
+ (CFLAGS-s_modf-ppc32.c): New variable.
+ (CFLAGS-s_modff-ppc32.c): Likewise.
+ * sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
+ (CFLAGS-s_modf-ppc64.c): Likewise.
+ (CFLAGS-s_modff-ppc64.c): Likewise.
+
2016-07-06 John David Anglin <danglin@gcc.gnu.org>
* sysdeps/hppa/fpu/libm-test-ulps: Regenerate.
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
index 590a8eb..804e7dc 100644
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
@@ -34,4 +34,9 @@ CFLAGS-s_logb-power7.c = -mcpu=power7
CFLAGS-s_logbf-power7.c = -mcpu=power7
CFLAGS-e_hypot-power7.c = -mcpu=power7
CFLAGS-e_hypotf-power7.c = -mcpu=power7
+
+# These files quiet sNaNs in a way that is optimized away without
+# -fsignaling-nans.
+CFLAGS-s_modf-ppc32.c += -fsignaling-nans
+CFLAGS-s_modff-ppc32.c += -fsignaling-nans
endif
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile b/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
index add1fb8..ff42288 100644
--- a/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
@@ -35,4 +35,9 @@ CFLAGS-s_modf-power5+.c = -mcpu=power5+
CFLAGS-s_modff-power5+.c = -mcpu=power5+
CFLAGS-e_hypot-power7.c = -mcpu=power7
CFLAGS-e_hypotf-power7.c = -mcpu=power7
+
+# These files quiet sNaNs in a way that is optimized away without
+# -fsignaling-nans.
+CFLAGS-s_modf-ppc64.c += -fsignaling-nans
+CFLAGS-s_modff-ppc64.c += -fsignaling-nans
endif
--
2.8.1