While I was there, I decided to improve another bit of VEC_SELECT
simplification (this supersedes the patch in the father of this message).

Adding Uros in Cc: because I am touching the x86 backend. Sorry to add yet 
another insn variant, but I don't see how we can avoid it here.

The x86 and RTL parts are independent, but the testcases need both.

bootstrap+testsuite on x86_64-linux. (for next stage1 I assume)

2012-12-02  Marc Glisse  <marc.glisse@inria.fr>

 	PR target/43147
 	PR target/44551
gcc/
 	* simplify-rtx.c (simplify_binary_operation_1) <VEC_SELECT>:
 	Improve VEC_SELECT and VEC_CONCAT subcases.
 	* config/i386/sse.md (*sse_shufps_<mode>_single): New.

gcc/testsuite/
 	* gcc.target/i386/pr43147.c: New testcase.
 	* gcc.target/i386/pr44551.c: New testcase.

-- 
Marc Glisse