commit e8ae9fcf387540f1b210f5ece372d0fd070b6249
author Philipp Maier <pmaier@sysmocom.de> Mon Mar 20 12:08:42 2017 +0100
committer Tom Tsou <tom@tsou.cc> Fri May 19 17:21:45 2017 +0000
tree a2cea15903fda9795776f35d1cee575b558d0ebc
parent f5bf33b287d5c4ce13c0ecac91c8d7f128a24eb5

buildenv: Split up SSE3 and SSE4.1 code

Currently we find SSE3 and SSE4.1 code mixed togehter along with
generic code in one file. This introduces the risk that the
compiler exidantly mixes SSE4.1 instructions into an SSE3, or
even worse into a generic code path.

This commit splits the SSE3 and SSE4.1 code into separate files
and compiles them with the matching target options.

Change-Id: I846e190e92f1258cd412d1b2d79b539e204e04b3

configure.ac

diff --git a/configure.ac b/configure.ac
index f1159c6..7c3c76f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -114,7 +114,10 @@
 
 # Find and define supported SIMD extensions
 AS_IF([test "x$with_sse" != "xno"], [
-    AX_EXT
+    AX_SSE
+], [
+    AM_CONDITIONAL(HAVE_SSE3, false)
+    AM_CONDITIONAL(HAVE_SSE4_1, false)
 ])
 
 AM_CONDITIONAL(USRP1, [test "x$with_usrp1" = "xyes"])