Disable CPU optimizations not supported by all x86_64 systems.

--- a/cmake/modules/SIMDExt.cmake	2017-03-23 22:22:58.254071694 +0100
+++ b/cmake/modules/SIMDExt.cmake	2017-03-23 22:23:22.446848845 +0100
@@ -5,11 +5,6 @@
 # HAVE_ARM_NEON
 # HAVE_INTEL_SSE
 # HAVE_INTEL_SSE2
-# HAVE_INTEL_SSE3
-# HAVE_INTEL_SSSE3
-# HAVE_INTEL_PCLMUL
-# HAVE_INTEL_SSE4_1
-# HAVE_INTEL_SSE4_2
 #
 # SIMD_COMPILE_FLAGS
 #
@@ -85,26 +80,6 @@
       if(HAVE_INTEL_SSE2)
         set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -msse2")
       endif()
-      CHECK_C_COMPILER_FLAG(-msse3 HAVE_INTEL_SSE3)
-      if(HAVE_INTEL_SSE3)
-        set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -msse3")
-      endif()
-      CHECK_C_COMPILER_FLAG(-mssse3 HAVE_INTEL_SSSE3)
-      if(HAVE_INTEL_SSSE3)
-        set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -mssse3")
-      endif()
-      CHECK_C_COMPILER_FLAG(-mpclmul HAVE_INTEL_PCLMUL)
-      if(HAVE_INTEL_PCLMUL)
-        set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -mpclmul")
-      endif()
-      CHECK_C_COMPILER_FLAG(-msse4.1 HAVE_INTEL_SSE4_1)
-      if(HAVE_INTEL_SSE4_1)
-        set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -msse4.1")
-      endif()
-      CHECK_C_COMPILER_FLAG(-msse4.2 HAVE_INTEL_SSE4_2)
-      if(HAVE_INTEL_SSE4_2)
-        set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -msse4.2")
-      endif()
     endif(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64|x86_64|AMD64")
   endif(CMAKE_SYSTEM_PROCESSOR MATCHES "i686|amd64|x86_64|AMD64")
 elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "(powerpc|ppc)64le")
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<div class='path'>path: <a href='/guix/log/?id=b5dea86d6411de36a3b7b1c5a0a13a22306a0554'>root</a>/<a href='/guix/log/tests?id=b5dea86d6411de36a3b7b1c5a0a13a22306a0554'>tests</a>/<a href='/guix/log/tests/boot-parameters.scm?id=b5dea86d6411de36a3b7b1c5a0a13a22306a0554'>boot-parameters.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/boot-parameters.scm?id=b5dea86d6411de36a3b7b1c5a0a13a22306a0554&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-08-28 23:37:28 +0200'>2022-08-28</span></td><td><a href='/guix/commit/tests/boot-parameters.scm?id=3294fa2ba451c7d5ef42a5d9fac780877f364bc7'>tests: Add test for menu-entry roundtrips as sexps.</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/boot-parameters.scm (%uuid-menu-entry,
%file-system-label-menu-entry): New variables.
("menu-entry roundtrip, uuid", "menu-entry roundtrip,
file-system-label"): New tests.

Signed-off-by: Marius Bakke &lt;marius@gnu.org&gt;
</span></span></td><td>Josselin Poiret</td></tr>
<tr><td><span title='2022-03-16 15:48:52 +0100'>2022-03-16</span></td><td><a href='/guix/commit/tests/boot-parameters.scm?id=47960b55268220ca1cb7d2fed41c53873181d816'>system: Improve 'read-boot-parameters' incompatibility diagnostic.</a><span class='msg-avail'>...<span class='msg-tooltip'>Previously, when reading an incompatible "parameters" file, 'guix
system' would print a warning and then crash with a wrong-type-arg
backtrace because code expects 'read-boot-parameters' to always return a
&lt;boot-parameters&gt; record.

* gnu/system.scm (read-boot-parameters): Upon incompatibility, raise an
error instead of returning #f.  Also raise a '&amp;fix-hint' condition.
* tests/boot-parameters.scm ("read, construction, mandatory fields"):
Define 'test-read-boot-parameters' as a macro; expect
'formatted-message?' exceptions rather than #f returns.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-03-01 10:30:17 -0500'>2022-03-01</span></td><td><a href='/guix/commit/tests/boot-parameters.scm?id=4a3b8f4d5981de444b3590fca8dfa1facb768933'>system: Add a version field to the &lt;boot-parameters&gt; record.</a><span class='msg-avail'>...<span class='msg-tooltip'>This version field exposes the (already present) version information of a boot
parameters file.

* gnu/system.scm (%boot-parameters-version): New variable.
(&lt;boot-parameters&gt;)[version]: New field.
(read-boot-parameters): Use it.
(operating-system-boot-parameters-file): Likewise.
* tests/boot-parameters.scm (test-read-boot-parameters): Use
%boot-parameters-version as the default version value in the template.
</span></span></td><td>Maxim Cournoyer</td></tr>