tcg: Streamline movcond_i64 using movcond_i32
When movcond_i32 is available we can further reduce the generated op count from 12 to 6, and the generated code size on i686 from 88 to 74 bytes. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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tcg/tcg-op.h
22
tcg/tcg-op.h
@ -2218,16 +2218,24 @@ static inline void tcg_gen_movcond_i64(TCGCond cond, TCGv_i64 ret,
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tcg_gen_op6i_i32(INDEX_op_setcond2_i32, t0,
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TCGV_LOW(c1), TCGV_HIGH(c1),
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TCGV_LOW(c2), TCGV_HIGH(c2), cond);
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tcg_gen_neg_i32(t0, t0);
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tcg_gen_and_i32(t1, TCGV_LOW(v1), t0);
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tcg_gen_andc_i32(TCGV_LOW(ret), TCGV_LOW(v2), t0);
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tcg_gen_or_i32(TCGV_LOW(ret), TCGV_LOW(ret), t1);
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if (TCG_TARGET_HAS_movcond_i32) {
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tcg_gen_movi_i32(t1, 0);
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tcg_gen_movcond_i32(TCG_COND_NE, TCGV_LOW(ret), t0, t1,
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TCGV_LOW(v1), TCGV_LOW(v2));
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tcg_gen_movcond_i32(TCG_COND_NE, TCGV_HIGH(ret), t0, t1,
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TCGV_HIGH(v1), TCGV_HIGH(v2));
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} else {
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tcg_gen_neg_i32(t0, t0);
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tcg_gen_and_i32(t1, TCGV_HIGH(v1), t0);
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tcg_gen_andc_i32(TCGV_HIGH(ret), TCGV_HIGH(v2), t0);
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tcg_gen_or_i32(TCGV_HIGH(ret), TCGV_HIGH(ret), t1);
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tcg_gen_and_i32(t1, TCGV_LOW(v1), t0);
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tcg_gen_andc_i32(TCGV_LOW(ret), TCGV_LOW(v2), t0);
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tcg_gen_or_i32(TCGV_LOW(ret), TCGV_LOW(ret), t1);
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tcg_gen_and_i32(t1, TCGV_HIGH(v1), t0);
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tcg_gen_andc_i32(TCGV_HIGH(ret), TCGV_HIGH(v2), t0);
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tcg_gen_or_i32(TCGV_HIGH(ret), TCGV_HIGH(ret), t1);
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}
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tcg_temp_free_i32(t0);
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tcg_temp_free_i32(t1);
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#else
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