[testsuite, i386] Fix gcc.target/i386/prefetchwt1-1.c on Solaris 9/x86

[Rainer Orth]

The new gcc.target/i386/prefetchwt1-1.c test currently FAILs on Solaris 9/x86:

FAIL: gcc.target/i386/prefetchwt1-1.c (test for excess errors)
Excess errors:
/var/gcc/regression/trunk/9-gcc-gas/build/gcc/include/xmmintrin.h:1195:1: error:
 inlining failed in call to always_inline '_mm_prefetch': target specific option
 mismatch
/vol/gcc/src/hg/trunk/local/gcc/testsuite/gcc.target/i386/prefetchwt1-1.c:12:5:
error: called from here

gcc.target/i386/prefetchwt1-1.c: output file does not exist
UNRESOLVED: gcc.target/i386/prefetchwt1-1.c scan-assembler [ \\t]+prefetchwt1[ \
\t]+

This can be fixed by compiling with -msse2.

Tested with the appropriate runtest invocation on i386-pc-solaris2.9,
i386-pc-solaris2.11, and x86_64-unknown-linux-gnu.

Ok for mainline?

	Rainer


2014-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* gcc.target/i386/prefetchwt1-1.c: Add -msse2 to dg-options.

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Rainer Orth, Center for Biotechnology, Bielefeld University