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tcg: Use extract2 in tcg_gen_deposit_{i32,i64}

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Backports commit b0a6056719b4a409a5699d11bbfdf79301417221 from qemu
This commit is contained in:
Richard Henderson 2019-04-30 09:35:46 -04:00 committed by Lioncash
parent 948635602c
commit da39922c60
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 30 additions and 2 deletions
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32
qemu/tcg/tcg-op.c
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@ -611,9 +611,22 @@ void tcg_gen_deposit_i32(TCGContext *s, TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 ar
return;
}
mask = (1u << len) - 1;
t1 = tcg_temp_new_i32(s);
if (TCG_TARGET_HAS_extract2_i32) {
if (ofs + len == 32) {
tcg_gen_shli_i32(s, t1, arg1, len);
tcg_gen_extract2_i32(s, ret, t1, arg2, len);
goto done;
}
if (ofs == 0) {
tcg_gen_extract2_i32(s, ret, arg1, arg2, len);
tcg_gen_rotli_i32(s, ret, ret, len);
goto done;
}
}
mask = (1u << len) - 1;
if (ofs + len < 32) {
tcg_gen_andi_i32(s, t1, arg2, mask);
tcg_gen_shli_i32(s, t1, t1, ofs);
@ -623,6 +636,7 @@ void tcg_gen_deposit_i32(TCGContext *s, TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 ar
tcg_gen_andi_i32(s, ret, arg1, ~(mask << ofs));
tcg_gen_or_i32(s, ret, ret, t1);
done:
tcg_temp_free_i32(s, t1);
}
@ -2032,9 +2046,22 @@ void tcg_gen_deposit_i64(TCGContext *s, TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 ar
}
}
mask = (1ull << len) - 1;
t1 = tcg_temp_new_i64(s);
if (TCG_TARGET_HAS_extract2_i64) {
if (ofs + len == 64) {
tcg_gen_shli_i64(s, t1, arg1, len);
tcg_gen_extract2_i64(s, ret, t1, arg2, len);
goto done;
}
if (ofs == 0) {
tcg_gen_extract2_i64(s, ret, arg1, arg2, len);
tcg_gen_rotli_i64(s, ret, ret, len);
goto done;
}
}
mask = (1ull << len) - 1;
if (ofs + len < 64) {
tcg_gen_andi_i64(s, t1, arg2, mask);
tcg_gen_shli_i64(s, t1, t1, ofs);
@ -2044,6 +2071,7 @@ void tcg_gen_deposit_i64(TCGContext *s, TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 ar
tcg_gen_andi_i64(s, ret, arg1, ~(mask << ofs));
tcg_gen_or_i64(s, ret, ret, t1);
done:
tcg_temp_free_i64(s, t1);
}