On 06/21/14 13:16, Marc Glisse wrote:
Hello,this is another small simplification of RTL for vectors. Note that it doesn't really solve the problem, because these simplifications are only performed for single-use objects. If I start from vectors [a,b] and [c,d] and concatenate them into [a,b,c,d], then extract both halves, as in the original testcase in the PR, we won't notice that those are the original vectors. Still, better than nothing... (we output a vzeroupper for the testcase, that seems unnecessary) Bootstrap+testsuite on x86_64-linux-gnu. 2014-06-22 Marc Glisse <marc.gli...@inria.fr> PR target/44551 gcc/ * simplify-rtx.c (simplify_binary_operation_1) <VEC_SELECT>: Optimize inverse of a VEC_CONCAT. gcc/testsuite/ * gcc.target/i386/pr44551-1.c: New file.
OK. Jeff
