Merge remote-tracking branch 'remotes/rth-gitlab/tags/pull-tcg-20210914-4' into staging

Merge remote-tracking branch 'remotes/rth-gitlab/tags/pull-tcg-20210914-4' into staging

Fix translation race condition for user-only.
Fix tcg/i386 encoding for VPSLLVQ, VPSRLVQ.
Fix tcg/arm tcg_out_vec_op signature.
Fix tcg/ppc (32bit) build with clang.
Remove dupluate TCG_KICK_PERIOD definition.
Remove unused tcg_global_reg_new.
Restrict cpu_exec_interrupt and its callees to sysemu.
Cleanups for tcg/arm.

# gpg: Signature made Tue 14 Sep 2021 20:28:35 BST
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth-gitlab/tags/pull-tcg-20210914-4: (43 commits)
  tcg/arm: More use of the TCGReg enum
  tcg/arm: More use of the ARMInsn enum
  tcg/arm: Give enum arm_cond_code_e a typedef and use it
  tcg/arm: Drop inline markers
  tcg/arm: Simplify usage of encode_imm
  tcg/arm: Split out tcg_out_ldstm
  tcg/arm: Support armv4t in tcg_out_goto and tcg_out_call
  tcg/arm: Simplify use_armv5t_instructions
  tcg/arm: Standardize on tcg_out_<branch>_{reg,imm}
  tcg/arm: Remove fallback definition of __ARM_ARCH
  accel/tcg/user-exec: Fix read-modify-write of code on s390 hosts
  user: Remove cpu_get_pic_interrupt() stubs
  accel/tcg: Restrict TCGCPUOps::cpu_exec_interrupt() to sysemu
  target/xtensa: Restrict cpu_exec_interrupt() handler to sysemu
  target/rx: Restrict cpu_exec_interrupt() handler to sysemu
  target/sparc: Restrict cpu_exec_interrupt() handler to sysemu
  target/sh4: Restrict cpu_exec_interrupt() handler to sysemu
  target/riscv: Restrict cpu_exec_interrupt() handler to sysemu
  target/ppc: Restrict cpu_exec_interrupt() handler to sysemu
  target/openrisc: Restrict cpu_exec_interrupt() handler to sysemu
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>