When disabling SSE, make sure -fpmath is not set to use SSE either
Commit Message
This fixes errors when we inject sse options through CFLAGS and now
that we have -Werror turned on by default this warning turns to become
error on x86
gcc -m32 -march=core2 -mtune=core2 -msse3 -mfpmath=sse -x c /dev/null -S
-mno-sse -mno-mmx
generates warning
/dev/null:1:0: warning: SSE instruction set disabled, using 387
arithmetics
where as
gcc -m32 -march=core2 -mtune=core2 -msse3 -mfpmath=sse -x c /dev/null -S
-mno-sse -mno-mmx -mfpmath=387
Generates no warnings
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
ChangeLog | 5 +++++
sysdeps/i386/Makefile | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
Comments
If this fixes bug 17950, you need to include
[BZ #17950]
in your ChangeLog entry, mention the bug number in your commit message and
close that bug as fixed with the milestone set appropriately once the fix
is in.
(This is not a review or approval of the patch.)
@@ -1,3 +1,8 @@
+2016-01-05 Khem Raj <raj.khem@gmail.com>
+
+ * sysdeps/i386/Makefile [$(subdir) == elf] (CFLAGS-.os):
+ Add -mfpmath=387.
+
2016-01-05 Joseph Myers <joseph@codesourcery.com>
* manual/texinfo.tex: Update to version 2016-01-04.21 with
@@ -89,7 +89,7 @@ ifeq ($(subdir),elf)
# the first 3 mm/xmm/ymm/zmm registers are used to pass vector parameters
# which must be preserved.
CFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),\
- -mno-sse -mno-mmx)
+ -mno-sse -mno-mmx -mfpmath=387)
tests-special += $(objpfx)tst-ld-sse-use.out
$(objpfx)tst-ld-sse-use.out: ../sysdeps/i386/tst-ld-sse-use.sh $(objpfx)ld.so