jump
fun jumpIfEqualsConstant(registerToTest: L2ReadBoxedOperand, constantValue: A_BasicObject, passBlock: L2BasicBlock, failBlock: L2BasicBlock)
Generate a conditional branch to either passBlock or failBlock, based on whether the given register equals the given constant value.
If the constant to compare against is a boolean, check the provenance of the register. If it's the result of a suitable comparison primitive, generate a more efficient compare-and-branch instruction instead of creating the boolean only to have it compared to a boolean constant.
If the value of the boolean-producing instruction is not used, it will eventually be removed as dead code.
Parameters
register
The register whose content should be compared.
constant
The constant value to compare against.
pass
Where to go if the register's value equals the constant.
fail
Where to go if the register's value does not equal the constant.