diff options
Diffstat (limited to 'erts')
| -rw-r--r-- | erts/emulator/beam/ops.tab | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab index 7a125b0f67..10ca74cd60 100644 --- a/erts/emulator/beam/ops.tab +++ b/erts/emulator/beam/ops.tab @@ -1690,9 +1690,14 @@ i_plus S1=c S2=c Fail Dst => move S1 x | i_plus x S2 Fail Dst i_plus xy xyc j? d -i_minus x x j? d -i_minus c x j? d -i_minus s s j? d +# A minus instruction with a constant right operand will be +# converted to an i_increment instruction, except in guards or +# when the negated value of the constant won't fit in a guard. +# Therefore, it very rare. +i_minus S1 S2=c Fail Dst => move S2 x | i_minus S1 x Fail Dst + +i_minus xy xy j? d +i_minus c xy j? d i_times j? s s d |