tcg: Make use of bswap flags in tcg_gen_qemu_st_*
By removing TCG_BSWAP_IZ we indicate that the input is not zero-extended, and thus can remove an explicit extend. By removing TCG_BSWAP_OZ, we allow the implementation to leave high bits set, which will be ignored by the store. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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@ -2915,8 +2915,7 @@ void tcg_gen_qemu_st_i32(TCGv_i32 val, TCGv addr, TCGArg idx, MemOp memop)
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swap = tcg_temp_new_i32();
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switch (memop & MO_SIZE) {
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case MO_16:
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tcg_gen_ext16u_i32(swap, val);
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tcg_gen_bswap16_i32(swap, swap, TCG_BSWAP_IZ | TCG_BSWAP_OZ);
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tcg_gen_bswap16_i32(swap, val, 0);
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break;
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case MO_32:
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tcg_gen_bswap32_i32(swap, val);
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@ -3013,12 +3012,10 @@ void tcg_gen_qemu_st_i64(TCGv_i64 val, TCGv addr, TCGArg idx, MemOp memop)
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swap = tcg_temp_new_i64();
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switch (memop & MO_SIZE) {
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case MO_16:
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tcg_gen_ext16u_i64(swap, val);
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tcg_gen_bswap16_i64(swap, swap, TCG_BSWAP_IZ | TCG_BSWAP_OZ);
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tcg_gen_bswap16_i64(swap, val, 0);
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break;
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case MO_32:
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tcg_gen_ext32u_i64(swap, val);
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tcg_gen_bswap32_i64(swap, swap, TCG_BSWAP_IZ | TCG_BSWAP_OZ);
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tcg_gen_bswap32_i64(swap, val, 0);
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break;
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case MO_64:
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tcg_gen_bswap64_i64(swap, val);
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