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From: <sv...@va...> - 2012-01-17 13:21:39
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Author: florian
Date: 2012-01-17 13:16:50 +0000 (Tue, 17 Jan 2012)
New Revision: 12340
Log:
Improve configure for SSE 4.2 detection. Fixes #271438
Modified:
trunk/NEWS
trunk/configure.in
Modified: trunk/NEWS
===================================================================
--- trunk/NEWS 2012-01-16 17:26:48 UTC (rev 12339)
+++ trunk/NEWS 2012-01-17 13:16:50 UTC (rev 12340)
@@ -30,6 +30,7 @@
247386 make perf does not run all performance tests
270796 s390x: Removed broken support for the TS insn
+271438 Fix configure for proper SSE4.2 detection
276993 fix mremap 'no thrash checks'
281482 valgrind's memcheck incorrect byte allocation count in realloc() for silly argument
283413 Fix wrong sanity check
Modified: trunk/configure.in
===================================================================
--- trunk/configure.in 2012-01-16 17:26:48 UTC (rev 12339)
+++ trunk/configure.in 2012-01-17 13:16:50 UTC (rev 12340)
@@ -1557,7 +1557,9 @@
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
do { long long int x;
__asm__ __volatile__(
- "crc32q %%r15,%%r15" : : : "r15" ); }
+ "crc32q %%r15,%%r15" : : : "r15" );
+ __asm__ __volatile__(
+ "pblendvb (%rcx), %xmm11"); }
while (0)
]])], [
ac_have_as_sse42=yes
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