diff options
| author | Björn Gustavsson <[email protected]> | 2015-03-20 14:45:31 +0100 |
|---|---|---|
| committer | Björn Gustavsson <[email protected]> | 2015-04-13 12:37:54 +0200 |
| commit | 8c5a577ed55a607841989763d78b3950eebd5b5f (patch) | |
| tree | 4be8ac0cee97359f1f0a8573e4d07aae7b27fd3f /erts/emulator/beam/ops.tab | |
| parent | 82b0a889fd2534af81e21c277657adf58699d73c (diff) | |
| download | otp-8c5a577ed55a607841989763d78b3950eebd5b5f.tar.gz otp-8c5a577ed55a607841989763d78b3950eebd5b5f.tar.bz2 otp-8c5a577ed55a607841989763d78b3950eebd5b5f.zip | |
Correct transformation of put_map_assoc to new_map
A put_map_assoc instruction with an empty source map should be
converted to a simpler new_map instruction. The transformation
didn't happen because an empty source map is no longer represented
as a NIL term (as it was in the beginning before map literals
were implemented).
Diffstat (limited to 'erts/emulator/beam/ops.tab')
| -rw-r--r-- | erts/emulator/beam/ops.tab | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab index ae3b7d08b8..2c4458ae74 100644 --- a/erts/emulator/beam/ops.tab +++ b/erts/emulator/beam/ops.tab @@ -1473,7 +1473,8 @@ apply_last I P # Map instructions in R17. # -put_map_assoc F n Dst Live Size Rest=* => new_map F Dst Live Size Rest +put_map_assoc F Map Dst Live Size Rest=* | is_empty_map(Map) => \ + new_map F Dst Live Size Rest put_map_assoc F Src=s Dst Live Size Rest=* => \ update_map_assoc F Src Dst Live Size Rest put_map_assoc F Src Dst Live Size Rest=* => \ |