Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20190522' into staging

Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20190522' into staging

Misc gvec improvements

# gpg: Signature made Wed 22 May 2019 23:25:48 BST
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "[email protected]"
# gpg: Good signature from "Richard Henderson <[email protected]>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-tcg-20190522:
  tcg/i386: Use MOVDQA for TCG_TYPE_V128 load/store
  tcg/aarch64: Allow immediates for vector ORR and BIC
  tcg/aarch64: Build vector immediates with two insns
  tcg/aarch64: Use MVNI in tcg_out_dupi_vec
  tcg/aarch64: Split up is_fimm
  tcg/aarch64: Support vector bitwise select value
  tcg/i386: Use umin/umax in expanding unsigned compare
  tcg/i386: Remove expansion for missing minmax
  tcg/i386: Support vector comparison select value
  tcg: Add TCG_OPF_NOT_PRESENT if TCG_TARGET_HAS_foo is negative
  tcg: Expand vector minmax using cmp+cmpsel
  tcg: Introduce do_op3_nofail for vector expansion
  tcg: Add support for vector compare select
  tcg: Add support for vector bitwise select
  tcg: Fix missing checks and clears in tcg_gen_gvec_dup_mem
  tcg/i386: Fix dupi/dupm for avx1 and 32-bit hosts

Signed-off-by: Peter Maydell <[email protected]>