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core/vm: remove JIT VM codes (#16362)

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This commit is contained in:
hydai
2018-03-26 18:48:04 +08:00
committed by Péter Szilágyi
parent 23ac783332
commit 84c5db5409
7 changed files with 9 additions and 434 deletions
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17
core/vm/doc.go
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@ -17,19 +17,8 @@
/*
Package vm implements the Ethereum Virtual Machine.
The vm package implements two EVMs, a byte code VM and a JIT VM. The BC
(Byte Code) VM loops over a set of bytes and executes them according to the set
of rules defined in the Ethereum yellow paper. When the BC VM is invoked it
invokes the JIT VM in a separate goroutine and compiles the byte code in JIT
instructions.
The JIT VM, when invoked, loops around a set of pre-defined instructions until
it either runs of gas, causes an internal error, returns or stops.
The JIT optimiser attempts to pre-compile instructions in to chunks or segments
such as multiple PUSH operations and static JUMPs. It does this by analysing the
opcodes and attempts to match certain regions to known sets. Whenever the
optimiser finds said segments it creates a new instruction and replaces the
first occurrence in the sequence.
The vm package implements one EVM, a byte code VM. The BC (Byte Code) VM loops
over a set of bytes and executes them according to the set of rules defined
in the Ethereum yellow paper.
*/
package vm