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can compile uw8loader

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This commit is contained in:
Dennis Ranke
2021-11-01 22:59:59 +01:00
parent d0ee844d8c
commit b47f1ef2bc
8 changed files with 358 additions and 53 deletions
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9
src/constfold.rs
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@@ -83,6 +83,9 @@ fn fold_expr(expr: &mut ast::Expression) {
Le => (left <= right) as i32,
Gt => (left > right) as i32,
Ge => (left >= right) as i32,
Lsl => left << right,
Lsr => ((left as u32) >> right) as i32,
Asr => left >> right
};
expr.expr = ast::Expr::I32Const(result);
}
@@ -93,7 +96,7 @@ fn fold_expr(expr: &mut ast::Expression) {
Sub => F32Const(left - right),
Mul => F32Const(left * right),
Div => F32Const(left / right),
Rem | And | Or | Xor => return,
Rem | And | Or | Xor | Lsl | Lsr | Asr => return,
Eq => I32Const((left == right) as i32),
Ne => I32Const((left != right) as i32),
Lt => I32Const((left < right) as i32),
@@ -106,8 +109,10 @@ fn fold_expr(expr: &mut ast::Expression) {
}
}
ast::Expr::I32Const(_) | ast::Expr::F32Const(_) | ast::Expr::Variable { .. } => (),
ast::Expr::Assign { ref mut value, .. } => fold_expr(value),
ast::Expr::LocalTee { ref mut value, .. } => fold_expr(value),
ast::Expr::Loop { ref mut block, .. } => fold_expr(block),
ast::Expr::Branch(_) => (),
ast::Expr::BranchIf {
ref mut condition, ..
} => fold_expr(condition),
@@ -146,6 +151,8 @@ fn fold_expr(expr: &mut ast::Expression) {
fold_expr(if_false);
}
}
ast::Expr::Return { value: Some(ref mut value) } => fold_expr(value),
ast::Expr::Return { value: None } => (),
ast::Expr::Error => unreachable!()
}
}