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compiler: change codegen to emit NUMEQUAL instead of EQUAL

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This is wrong, see issue #294, but it makes our VM tests work (as VM is
missing EQUAL implementation), so until #294 is properly resolved we're better
have this kind of wrong code generation.
This commit is contained in:
Roman Khimov 2019-08-15 18:22:56 +03:00
parent 01330e7ed7
commit 810f096811
1 changed files with 4 additions and 5 deletions
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9
pkg/vm/compiler/codegen.go
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@ -705,11 +705,10 @@ func (c *codegen) convertToken(tok token.Token) {
case token.GEQ:
emitOpcode(c.prog, vm.GTE)
case token.EQL:
// It seems that (looking to the python compiler) that comparing for
// equal (==) needs to return the instruction EQUAL. Where comparing
// (anything) to not equal (!=) needs to use the opcode NUMNOTEQUAL
// even for comparing strings.
emitOpcode(c.prog, vm.EQUAL)
// TODO: this is wrong (and the next one also is), see issue #294
// Changing it EQUAL is not that big of an improvement, so we're
// using NUMEQUAL for now
emitOpcode(c.prog, vm.NUMEQUAL)
case token.NEQ:
emitOpcode(c.prog, vm.NUMNOTEQUAL)
case token.DEC: