diff options
Diffstat (limited to 'erts/emulator/beam/ops.tab')
| -rw-r--r-- | erts/emulator/beam/ops.tab | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab index 067f81930d..6832e65b1b 100644 --- a/erts/emulator/beam/ops.tab +++ b/erts/emulator/beam/ops.tab @@ -270,8 +270,8 @@ move_jump f cxy xy move_jump f c r -# Movement to and from the stack is common -# Try to pack as much as we can into one instruction +# Movement to and from the stack is common. +# Try to pack as much as we can into one instruction. # Window move move_window/5 @@ -299,6 +299,31 @@ move_window3 x x x y move_window4 x x x x y move_window5 x x x x x y +# y -> x + +move_src_window/4 +move_src_window/5 + +move Y1=y X1=x | move Y2=y X2=x | succ(Y1, Y2) => \ + move_src_window Y1 Y2 X1 X2 + +move_src_window Y1 Y2 X1 X2 | move Y3=y X3=x | succ(Y2, Y3) => \ + move_src_window Y1 Y3 X1 X2 X3 +move_src_window Y1 Y2 X1 X2 | move Y3=y X3=x | move Y4=y X4=x | succ(Y3, Y4) => \ + move_src_window2 Y1 X1 X2 | move_src_window Y3 Y4 X3 X4 +move_src_window Y1 Y2 X1 X2 | move Y3=y X3=x => \ + move3 Y1 X1 Y2 X2 Y3 X3 + +move_src_window Y1 Y3 X1 X2 X3 | move Y4=y X4=x | succ(Y3, Y4) => \ + move_src_window4 Y1 X1 X2 X3 X4 + +move_src_window Y1 y X1 X2 => move_src_window2 Y1 X1 X2 +move_src_window Y1 y X1 X2 X3 => move_src_window3 Y1 X1 X2 X3 + +move_src_window2 y x x +move_src_window3 y x x x +move_src_window4 y x x x x + # Swap registers. move R1=xy Tmp=x | move R2=xy R1 | move Tmp R2 => swap_temp R1 R2 Tmp |