From b123ddc760e5b53dde17c6a19a130173067c0e30 Mon Sep 17 00:00:00 2001
From: Jason Evans <jasone@canonware.com>
Date: Wed, 8 Oct 2014 18:18:03 -0700
Subject: [PATCH] Don't configure HAVE_SSE2.

Don't configure HAVE_SSE2 (on behalf of SFMT), because its dependencies
are notoriously unportable in practice.

This resolves #119.
---
 configure.ac                              | 10 ----------
 test/include/test/jemalloc_test_defs.h.in |  5 ++++-
 2 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/configure.ac b/configure.ac
index e4afe889..1d79ded6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -206,8 +206,6 @@ AC_CANONICAL_HOST
 dnl CPU-specific settings.
 CPU_SPINWAIT=""
 case "${host_cpu}" in
-  i[[345]]86)
-	;;
   i686|x86_64)
 	JE_COMPILABLE([pause instruction], [],
 	              [[__asm__ volatile("pause"); return 0;]],
@@ -215,14 +213,6 @@ case "${host_cpu}" in
 	if test "x${je_cv_pause}" = "xyes" ; then
 	    CPU_SPINWAIT='__asm__ volatile("pause")'
 	fi
-	dnl emmintrin.h fails to compile unless MMX, SSE, and SSE2 are
-	dnl supported.
-	JE_COMPILABLE([SSE2 intrinsics], [
-#include <emmintrin.h>
-], [], [je_cv_sse2])
-	if test "x${je_cv_sse2}" = "xyes" ; then
-	  AC_DEFINE_UNQUOTED([HAVE_SSE2], [ ])
-	fi
 	;;
   powerpc)
 	AC_DEFINE_UNQUOTED([HAVE_ALTIVEC], [ ])
diff --git a/test/include/test/jemalloc_test_defs.h.in b/test/include/test/jemalloc_test_defs.h.in
index aaaaec14..5cc8532a 100644
--- a/test/include/test/jemalloc_test_defs.h.in
+++ b/test/include/test/jemalloc_test_defs.h.in
@@ -1,6 +1,9 @@
 #include "jemalloc/internal/jemalloc_internal_defs.h"
 #include "jemalloc/internal/jemalloc_internal_decls.h"
 
-/* For use by SFMT. */
+/*
+ * For use by SFMT.  configure.ac doesn't actually define HAVE_SSE2 because its
+ * dependencies are notoriously unportable in practice.
+ */
 #undef HAVE_SSE2
 #undef HAVE_ALTIVEC