LLVM with the emscripten fastcomp javascript backend https://git.amat.us/emscripten-fastcomp/atom/test/CodeGen/X86/buildvec-insertvec.ll?h=1.13.2 2012-10-19T17:15:18Z 2012-10-19T17:15:18Z Michael Liao michael.liao@intel.com 2012-10-19T17:15:18Z urn:sha1:facace808cc5f83067a05c4c319f98fd75336f47 - If INSERT_VECTOR_ELT is supported (above SSE2, either by custom sequence of legal insn), transform BUILD_VECTOR into SHUFFLE + INSERT_VECTOR_ELT if most of elements could be built from SHUFFLE with few (so far 1) elements being inserted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166288 91177308-0d34-0410-b5e6-96231b3b80d8