When rte_lpm.h is used on x86, -O0 option (no optimization at all)
given to g++ (not gcc) causes a compile error like this:
error: the last argument must be an 8-bit immediate
i24 = _mm_srli_si128(i24, sizeof(uint64_t));
-O0 option is useful for debugging and code coverage measurement, but
this error prevents C++ programs from building. This patch replaces
"sizeof(uint64_t)" with a constant literal "8" to work around the issue.
Tested with g++ 5.4.1.
Signed-off-by: Sangjin Han <sang...@eecs.berkeley.edu>
---
lib/librte_lpm/rte_lpm_sse.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/librte_lpm/rte_lpm_sse.h b/lib/librte_lpm/rte_lpm_sse.h
index ef33c6a..2e17df3 100644
--- a/lib/librte_lpm/rte_lpm_sse.h
+++ b/lib/librte_lpm/rte_lpm_sse.h
@@ -78,7 +78,7 @@ rte_lpm_lookupx4(const struct rte_lpm *lpm, xmm_t ip,
uint32_t hop[4],
/* extract values from tbl24[] */
idx = _mm_cvtsi128_si64(i24);
- i24 = _mm_srli_si128(i24, sizeof(uint64_t));
+ i24 = _mm_srli_si128(i24, 8);
ptbl = (const uint32_t *)&lpm->tbl24[(uint32_t)idx];
tbl[0] = *ptbl;
--
2.7.4
