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authorDavid Howells2007-07-19 01:49:09 -0700
committerLinus Torvalds2007-07-19 10:04:50 -0700
commitea02e3dde3509ffa7fda7f8de9c8a366e03f7bbd (patch)
tree0c48aa948de8549a2b183c2ed3e5b338fa9730b7 /arch/frv
parent3abf7afd406866a84276d3ed04f4edf6070c9cb5 (diff)
FRV: work around a possible compiler bug
Work around a possible bug in the FRV compiler. What appears to be happening is that gcc resolves the __builtin_constant_p() in kmalloc() to true, but then fails to reduce the therefore constant conditions in the if-statements it guards to constant results. When compiling with -O2 or -Os, one single spurious error crops up in cpuup_callback() in mm/slab.c. This can be avoided by making the memsize variable const. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/frv')
-rw-r--r--arch/frv/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/frv/Makefile b/arch/frv/Makefile
index 038e3a8457e0..9bf7345c5cc9 100644
--- a/arch/frv/Makefile
+++ b/arch/frv/Makefile
@@ -88,7 +88,7 @@ ASFLAGS += -mno-fdpic
# make sure the .S files get compiled with debug info
# and disable optimisations that are unhelpful whilst debugging
ifdef CONFIG_DEBUG_INFO
-CFLAGS += -O1
+#CFLAGS += -O1
AFLAGS += -Wa,--gdwarf2
ASFLAGS += -Wa,--gdwarf2
endif