[PATCH 0/2] LoongArch: Fix PR113033 and clean up code

[Xi Ruoyao]

Superseds
https://gcc.gnu.org/pipermail/gcc-patches/2023-December/640871.html.

Per Jakub's response, vec_init patterns do not have a predicate on the
input operand so the operand can be *anything*.  It's not safe to simply
move it into an reg, and we have to use force_reg instead.

The code clean up is separated into the 2nd patch to make reviewing
easier.

Bootstrapped and regtested on loongarch64-linux-gnu.  Ok for trunk?

Xi Ruoyao (2):
  LoongArch: Use force_reg instead of gen_reg_rtx + emit_move_insn in
    vec_init expander [PR113033]
  LoongArch: Clean up vec_init expander

 gcc/config/loongarch/loongarch.cc             | 54 +++++++------------
 gcc/testsuite/gcc.target/loongarch/pr113033.c | 23 ++++++++
 2 files changed, 43 insertions(+), 34 deletions(-)
 create mode 100644 gcc/testsuite/gcc.target/loongarch/pr113033.c

-- 
2.43.0