lkml.org 
[lkml]   [2014]   [Feb]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 02/19] lto: Disable LTO for hweight functions
Date
From: Andi Kleen <ak@linux.intel.com>

x86 calls the hweight library functions with special calling conventions.
LTO doesn't support compiling individual files with special options.
Just disable LTO for the file.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
lib/Makefile | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/Makefile b/lib/Makefile
index 48140e3..2057304 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -46,7 +46,9 @@ obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o
obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o

GCOV_PROFILE_hweight.o := n
-CFLAGS_hweight.o = $(subst $(quote),,$(CONFIG_ARCH_HWEIGHT_CFLAGS))
+CFLAGS_hweight.o = $(subst $(quote),,$(CONFIG_ARCH_HWEIGHT_CFLAGS)) \
+ $(DISABLE_LTO)
+
obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o

obj-$(CONFIG_BTREE) += btree.o
--
1.8.5.2


\
 
 \ /
  Last update: 2014-02-14 23:01    [W:0.153 / U:0.444 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site