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tcg: Use extract2 in tcg_gen_deposit_{i32,i64} 

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2019-02-25 11:10:53 -08:00
parent 02616bad6f
commit b0a6056719
1 changed files with 30 additions and 4 deletions
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34
tcg/tcg-op.c
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@ -611,9 +611,22 @@ void tcg_gen_deposit_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2,
return;
}
mask = (1u << len) - 1;
t1 = tcg_temp_new_i32();
if (TCG_TARGET_HAS_extract2_i32) {
if (ofs + len == 32) {
tcg_gen_shli_i32(t1, arg1, len);
tcg_gen_extract2_i32(ret, t1, arg2, len);
goto done;
}
if (ofs == 0) {
tcg_gen_extract2_i32(ret, arg1, arg2, len);
tcg_gen_rotli_i32(ret, ret, len);
goto done;
}
}
mask = (1u << len) - 1;
if (ofs + len < 32) {
tcg_gen_andi_i32(t1, arg2, mask);
tcg_gen_shli_i32(t1, t1, ofs);
@ -622,7 +635,7 @@ void tcg_gen_deposit_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2,
}
tcg_gen_andi_i32(ret, arg1, ~(mask << ofs));
tcg_gen_or_i32(ret, ret, t1);
done:
tcg_temp_free_i32(t1);
}
@ -2024,9 +2037,22 @@ void tcg_gen_deposit_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2,
}
}
mask = (1ull << len) - 1;
t1 = tcg_temp_new_i64();
if (TCG_TARGET_HAS_extract2_i64) {
if (ofs + len == 64) {
tcg_gen_shli_i64(t1, arg1, len);
tcg_gen_extract2_i64(ret, t1, arg2, len);
goto done;
}
if (ofs == 0) {
tcg_gen_extract2_i64(ret, arg1, arg2, len);
tcg_gen_rotli_i64(ret, ret, len);
goto done;
}
}
mask = (1ull << len) - 1;
if (ofs + len < 64) {
tcg_gen_andi_i64(t1, arg2, mask);
tcg_gen_shli_i64(t1, t1, ofs);
@ -2035,7 +2061,7 @@ void tcg_gen_deposit_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2,
}
tcg_gen_andi_i64(ret, arg1, ~(mask << ofs));
tcg_gen_or_i64(ret, ret, t1);
done:
tcg_temp_free_i64(t1);
}