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Re: [PATCH 09/12] target/ppc: Use gvec to decode XVCPSGN[SD]P


From: Richard Henderson
Subject: Re: [PATCH 09/12] target/ppc: Use gvec to decode XVCPSGN[SD]P
Date: Sat, 24 Sep 2022 14:43:33 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0

On 9/23/22 21:47, Lucas Mateus Castro(alqotel) wrote:
+static void do_xvcpsgn_vec(unsigned vece, TCGv_vec t, TCGv_vec a, TCGv_vec b)
+{
+    TCGv_vec most_significant_bit = tcg_temp_new_vec_matching(t);
+    uint64_t msb = (vece == MO_32) ? SGN_MASK_SP : SGN_MASK_DP;
+    tcg_gen_dupi_vec(vece, most_significant_bit, msb);
+    tcg_gen_and_vec(vece, a, a, most_significant_bit);
+    tcg_gen_andc_vec(vece, b, b, most_significant_bit);
+    tcg_gen_or_vec(vece, t, a, b);
+    tcg_temp_free_vec(most_significant_bit);
+}

tcg_constant_vec_matching, and tcg_gen_bitsel_vec.


r~



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