X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=lib%2Flibrte_lpm%2Frte_lpm_sse.h;h=5f2c4d4a88be735a4a6ec2ba453f7daed48edc01;hb=refs%2Fchanges%2F86%2F8086%2F1;hp=ef33c6a1b8fb1fae9a3e4bf726b9221d84b6aa82;hpb=bf7567fd2a5b0b28ab724046143c24561d38d015;p=deb_dpdk.git

diff --git a/lib/librte_lpm/rte_lpm_sse.h b/lib/librte_lpm/rte_lpm_sse.h
index ef33c6a1..5f2c4d4a 100644
--- a/lib/librte_lpm/rte_lpm_sse.h
+++ b/lib/librte_lpm/rte_lpm_sse.h
@@ -78,7 +78,8 @@ 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));
+	/* With -O0 option, gcc 4.8 - 5.4 fails to fold sizeof() into a constant */
+	i24 = _mm_srli_si128(i24, /* sizeof(uint64_t) */ 8);
 
 	ptbl = (const uint32_t *)&lpm->tbl24[(uint32_t)idx];
 	tbl[0] = *ptbl;