diff options
| author | Hongyu Wang <hongyu.wang@intel.com> | 2022-02-28 15:09:59 +0800 |
|---|---|---|
| committer | Hongyu Wang <hongyu.wang@intel.com> | 2022-03-01 09:33:35 +0800 |
| commit | e2385690a3ead66744e51115966f25f9c05bb3e2 (patch) | |
| tree | c1eb25fc064e54de232183a701663ce751810b2c /gcc/config | |
| parent | a35f16971b4ba047779ec8a3723dd1bfd9ecdf3d (diff) | |
| download | gcc-e2385690a3ead66744e51115966f25f9c05bb3e2.zip gcc-e2385690a3ead66744e51115966f25f9c05bb3e2.tar.gz gcc-e2385690a3ead66744e51115966f25f9c05bb3e2.tar.bz2 | |
i386: Fix V8HF vector init under -mno-avx [PR 104664]
For V8HFmode vector init with HFmode, do not directly emits V8HF move
with subreg, which may cause reload to assign general register to move
src.
gcc/ChangeLog:
PR target/104664
* config/i386/i386-expand.cc (ix86_expand_vector_init_duplicate):
Use vec_setv8hf_0 for HF to V8HFmode move instead of subreg.
gcc/testsuite/ChangeLog:
PR target/104664
* gcc.target/i386/pr104664.c: New test.
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/i386/i386-expand.cc | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/config/i386/i386-expand.cc b/gcc/config/i386/i386-expand.cc index faa0191..530f83f 100644 --- a/gcc/config/i386/i386-expand.cc +++ b/gcc/config/i386/i386-expand.cc @@ -14899,7 +14899,12 @@ ix86_expand_vector_init_duplicate (bool mmx_ok, machine_mode mode, dperm.one_operand_p = true; if (mode == V8HFmode) - tmp1 = lowpart_subreg (V8HFmode, force_reg (HFmode, val), HFmode); + { + tmp1 = force_reg (HFmode, val); + tmp2 = gen_reg_rtx (mode); + emit_insn (gen_vec_setv8hf_0 (tmp2, CONST0_RTX (mode), tmp1)); + tmp1 = gen_lowpart (mode, tmp2); + } else { /* Extend to SImode using a paradoxical SUBREG. */ |