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| author | Björn Gustavsson <[email protected]> | 2018-09-05 13:25:28 +0200 |
|---|---|---|
| committer | GitHub <[email protected]> | 2018-09-05 13:25:28 +0200 |
| commit | 66b797b4aeca486f515d96c1677cc633ce12a5d3 (patch) | |
| tree | 1d5d55a26a42a97b1f052fa87cfe772e212b6775 /erts/emulator/beam/ops.tab | |
| parent | 092f4847f489cba0381676a6a389ddbfc2af4f1e (diff) | |
| parent | 47a2ff39ac75c69b41f90f05a63fd9a2e6c0b36a (diff) | |
| download | otp-66b797b4aeca486f515d96c1677cc633ce12a5d3.tar.gz otp-66b797b4aeca486f515d96c1677cc633ce12a5d3.tar.bz2 otp-66b797b4aeca486f515d96c1677cc633ce12a5d3.zip | |
Merge pull request #1947 from bjorng/bjorn/opt-put-tuple
Introduce a put_tuple2 instruction
Diffstat (limited to 'erts/emulator/beam/ops.tab')
| -rw-r--r-- | erts/emulator/beam/ops.tab | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab index d71594235e..d859c4bb24 100644 --- a/erts/emulator/beam/ops.tab +++ b/erts/emulator/beam/ops.tab @@ -483,9 +483,16 @@ is_eq f? s s is_ne f? s s # -# Putting things. +# Putting tuples. +# +# Code compiled with OTP 22 and later uses put_tuple2 to +# to construct a tuple. +# +# Code compiled before OTP 22 uses put_tuple + one put instruction +# per element. Translate to put_tuple2. # +i_put_tuple/2 put_tuple Arity Dst => i_put_tuple Dst u i_put_tuple Dst Arity Puts=* | put S1 | put S2 | \ @@ -495,11 +502,13 @@ i_put_tuple Dst Arity Puts=* | put S1 | put S2 | \ i_put_tuple Dst Arity Puts=* | put S => \ tuple_append_put(Arity, Dst, Puts, S) -i_put_tuple/2 +i_put_tuple Dst Arity Puts=* => put_tuple2 Dst Arity Puts -i_put_tuple xy I +put_tuple2 xy I # +# Putting lists. +# # The instruction "put_list Const [] Dst" were generated in rare # circumstances up to and including OTP 18. Starting with OTP 19, # AFAIK, it should never be generated. |