d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

eal/arm: fix build with gcc optimization level 0

Browse Source 
GCC build with '-O0' on platforms with RTE_ARM_FEATURE_ATOMICS set
failed for:
 ../lib/librte_efd/rte_efd.c
 Assembler messages:
3866: Error: selected processor does not support `crc32cb w0,w0,w1'
3890: Error: selected processor does not support `crc32ch w0,w0,w1'
3914: Error: selected processor does not support `crc32cw w0,w0,w1'
3938: Error: selected processor does not support `crc32cx w0,w0,x1'

This was caused by an architecture specifier added for Clang.
Unlike Clang, GCC considers each inline assembly block to be dependent
and therefore, the architecture specifier impacts assemble of some
blocks require certain extension support.

Removed the architecture for GCC to fix the issue.

Fixes: 8fce34cd0a6a ("eal/arm: fix clang build of native target")
Cc: stable@dpdk.org

Reported-by: Feifei Wang <feifei.wang2@arm.com>
Signed-off-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
This commit is contained in:
Ruifeng Wang 2020-11-27 16:09:02 +08:00 committed by Thomas Monjalon
parent 8397cac725
commit d123fd111a
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
lib/librte_eal/arm/include/rte_atomic_64.h
View File

@ -46,7 +46,11 @@ rte_atomic_thread_fence(int memorder)
/*------------------------ 128 bit atomic operations -------------------------*/
#if defined(__ARM_FEATURE_ATOMICS) || defined(RTE_ARM_FEATURE_ATOMICS)
#if defined(RTE_CC_CLANG)
#define __LSE_PREAMBLE ".arch armv8-a+lse\n"
#else
#define __LSE_PREAMBLE ""
#endif
#define __ATOMIC128_CAS_OP(cas_op_name, op_string) \
static __rte_noinline rte_int128_t \