From 2f27c5244db300387f15d9ffa5067a204ffd625d Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Wed, 13 May 2020 09:32:33 -0700 Subject: target/arm: Remove unnecessary range check for VSHL In 1dc8425e551, while converting to gvec, I added an extra range check against the shift count. This was unnecessary because the encoding of the shift count produces 0 to the element size - 1. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Message-id: 20200513163245.17915-5-richard.henderson@linaro.org Signed-off-by: Peter Maydell --- target/arm/translate.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/target/arm/translate.c b/target/arm/translate.c index 3c489852dc..2eec689c5e 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -5752,16 +5752,8 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn) gen_gvec_sli(size, rd_ofs, rm_ofs, shift, vec_size, vec_size); } else { /* VSHL */ - /* Shifts larger than the element size are - * architecturally valid and results in zero. - */ - if (shift >= 8 << size) { - tcg_gen_gvec_dup_imm(size, rd_ofs, - vec_size, vec_size, 0); - } else { - tcg_gen_gvec_shli(size, rd_ofs, rm_ofs, shift, - vec_size, vec_size); - } + tcg_gen_gvec_shli(size, rd_ofs, rm_ofs, shift, + vec_size, vec_size); } return 0; } -- cgit v1.2.3