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Diffstat (limited to 'tcg/README')
| -rw-r--r-- | tcg/README | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tcg/README b/tcg/README index a18a87ffcd..a50ecc6588 100644 --- a/tcg/README +++ b/tcg/README @@ -285,6 +285,20 @@ the four high order bytes are set to zero. Indicate that the value of t0 won't be used later. It is useful to force dead code elimination. +* deposit_i32/i64 dest, t1, t2, pos, loc + +Deposit T2 as a bitfield into T1, placing the result in DEST. +The bitfield is described by POS/LOC, which are immediate values: + + LEN - the length of the bitfield + POS - the position of the first bit, counting from the LSB + +For example, pos=8, len=4 indicates a 4-bit field at bit 8. +This operation would be equivalent to + + dest = (t1 & ~0x0f00) | ((t2 << 8) & 0x0f00) + + ********* Conditional moves * setcond_i32/i64 cond, dest, t1, t2 |