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sched: fix build without SSE4

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Irrelevant of the target, the preprocessor #ifdef SSE2 for the
grinder_pipe_exists function is inadequate since the __mm_testz_si128
function requires SSE4.1, PTEST instruction described in
https://en.wikipedia.org/wiki/SSE4#SSE4.1 (I do no have better spec
reference). I have bumped the preprocessor #ifdef to require SSE4.

The Atom N2600 does not have SSE4, http://ark.intel.com/products/58916,
and so I had trouble building rte_sched with optimized version of
grinder_pipe_exists, with following:
error: inlining failed in call to always_inline _mm_testz_si128’:
       target specific option mismatch

GCC 4.9 correctly identifies my target as not having SSE4, and with
provided patch builds the non-optimized version of grinder_pipe_exists.

Signed-off-by: Mike Sowka <msowka@gmail.com>
This commit is contained in:
Mike Sowka 2015-12-05 17:27:56 -05:00 committed by Thomas Monjalon
parent e3787501d2
commit 90f455f3d3
1 changed files with 3 additions and 3 deletions
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6
lib/librte_sched/rte_sched.c
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@ -55,8 +55,8 @@
#ifdef RTE_SCHED_VECTOR
#include <rte_vect.h>
#if defined(__SSE2__)
#define SCHED_VECTOR_SSE2
#if defined(__SSE4__)
#define SCHED_VECTOR_SSE4
#endif
#endif
@ -1672,7 +1672,7 @@ grinder_schedule(struct rte_sched_port *port, uint32_t pos)
return 1;
}
#ifdef SCHED_VECTOR_SSE2
#ifdef SCHED_VECTOR_SSE4
static inline int
grinder_pipe_exists(struct rte_sched_port *port, uint32_t base_pipe)