* config/i386/sse.md (reduc_umin_v8hi): New pattern.
* config/i386/i386.c (ix86_build_const_vector): Handle
also V32QI, V16QI, V16HI and V8HI modes.
(emit_reduc_half): New function.
(ix86_expand_reduc): Use phminposuw insn for V8HImode UMIN.
Use emit_reduc_half helper function.
* gcc.target/i386/sse4_1-phminposuw-2.c: New test.
* gcc.target/i386/sse4_1-phminposuw-3.c: New test.
* gcc.target/i386/avx-vphminposuw-2.c: New test.
* gcc.target/i386/avx-vphminposuw-3.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@179929 138bc75d-0d04-0410-961f-82ee72b054a4