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VarAction2: Set value inferences for operations with eq/neq adjust types

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This commit is contained in:
Jonathan G Rennison 2022-06-03 16:03:48 +01:00
parent 04a9c73ec2
commit ccef3646db
1 changed files with 7 additions and 5 deletions
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12
src/newgrf.cpp
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@ -5824,12 +5824,14 @@ static void OptimiseVarAction2Adjust(VarAction2OptimiseState &state, const GrfSp
}
});
handle_group(adjust.subroutine);
} else {
} else if (adjust.operation == DSGA_OP_RST) {
state.inference = VA2AIF_SINGLE_LOAD;
}
if (adjust.type == DSGA_TYPE_EQ || adjust.type == DSGA_TYPE_NEQ) {
if (adjust.operation == DSGA_OP_RST) {
state.inference = VA2AIF_SINGLE_LOAD;
if (adjust.type == DSGA_TYPE_EQ || adjust.type == DSGA_TYPE_NEQ) {
state.inference |= VA2AIF_SIGNED_NON_NEGATIVE | VA2AIF_ONE_OR_ZERO;
}
state.inference |= VA2AIF_SIGNED_NON_NEGATIVE | VA2AIF_ONE_OR_ZERO;
} else if (adjust.operation == DSGA_OP_OR || adjust.operation == DSGA_OP_XOR || adjust.operation == DSGA_OP_AND) {
state.inference |= (prev_inference & (VA2AIF_SIGNED_NON_NEGATIVE | VA2AIF_ONE_OR_ZERO));
}
}
} else {