mirror of https://github.com/proxmox/mirror_qemu
target/alpha: optimize gen_cvtlq() using deposit op
Suggested-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20170718045540.16322-10-f4bug@amsat.org> Signed-off-by: Richard Henderson <rth@twiddle.net>master
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08d64e0db0
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729028a6e2
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@ -783,11 +783,9 @@ static void gen_cvtlq(TCGv vc, TCGv vb)
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/* The arithmetic right shift here, plus the sign-extended mask below
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/* The arithmetic right shift here, plus the sign-extended mask below
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yields a sign-extended result without an explicit ext32s_i64. */
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yields a sign-extended result without an explicit ext32s_i64. */
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tcg_gen_sari_i64(tmp, vb, 32);
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tcg_gen_shri_i64(tmp, vb, 29);
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tcg_gen_shri_i64(vc, vb, 29);
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tcg_gen_sari_i64(vc, vb, 32);
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tcg_gen_andi_i64(tmp, tmp, (int32_t)0xc0000000);
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tcg_gen_deposit_i64(vc, vc, tmp, 0, 30);
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tcg_gen_andi_i64(vc, vc, 0x3fffffff);
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tcg_gen_or_i64(vc, vc, tmp);
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tcg_temp_free(tmp);
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tcg_temp_free(tmp);
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}
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}
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