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refactor access_needs_check
to take a reference to the expression arena
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parent
b32574b368
commit
3199a3a6b0
@ -630,7 +630,13 @@ impl<'a> ExpressionContext<'a> {
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base: Handle<crate::Expression>,
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index: index::GuardedIndex,
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) -> Option<index::IndexableLength> {
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index::access_needs_check(base, index, self.module, self.function, self.info)
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index::access_needs_check(
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base,
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index,
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self.module,
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&self.function.expressions,
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self.info,
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)
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}
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fn get_packed_vec_kind(&self, expr_handle: Handle<crate::Expression>) -> Option<crate::Scalar> {
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@ -357,8 +357,11 @@ impl<'w> BlockContext<'w> {
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}
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crate::TypeInner::Array { .. } | crate::TypeInner::Matrix { .. } => {
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// See if `index` is known at compile time.
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match GuardedIndex::from_expression(index, self.ir_function, self.ir_module)
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{
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match GuardedIndex::from_expression(
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index,
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&self.ir_function.expressions,
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self.ir_module,
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) {
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GuardedIndex::Known(value) => {
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// If `index` is known and in bounds, we can just use
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// `OpCompositeExtract`.
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@ -512,7 +512,7 @@ impl<'w> BlockContext<'w> {
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block: &mut Block,
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) -> Result<BoundsCheckResult, Error> {
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// If the value of `index` is known at compile time, find it now.
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index.try_resolve_to_constant(self.ir_function, self.ir_module);
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index.try_resolve_to_constant(&self.ir_function.expressions, self.ir_module);
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let policy = self.writer.bounds_check_policies.choose_policy(
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base,
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@ -250,7 +250,7 @@ pub fn find_checked_indexes(
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base,
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GuardedIndex::Expression(index),
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module,
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function,
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&function.expressions,
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info,
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)
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.is_some()
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@ -311,7 +311,7 @@ pub fn access_needs_check(
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base: Handle<crate::Expression>,
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mut index: GuardedIndex,
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module: &crate::Module,
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function: &crate::Function,
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expressions: &crate::Arena<crate::Expression>,
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info: &valid::FunctionInfo,
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) -> Option<IndexableLength> {
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let base_inner = info[base].ty.inner_with(&module.types);
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@ -319,7 +319,7 @@ pub fn access_needs_check(
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// length constants, but `access_needs_check` is only used by back ends, so
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// validation should have caught those problems.
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let length = base_inner.indexable_length(module).unwrap();
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index.try_resolve_to_constant(function, module);
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index.try_resolve_to_constant(expressions, module);
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if let (&GuardedIndex::Known(index), &IndexableLength::Known(length)) = (&index, &length) {
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if index < length {
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// Index is statically known to be in bounds, no check needed.
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@ -336,23 +336,20 @@ impl GuardedIndex {
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/// Return values that are already `Known` unchanged.
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pub(crate) fn try_resolve_to_constant(
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&mut self,
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function: &crate::Function,
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expressions: &crate::Arena<crate::Expression>,
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module: &crate::Module,
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) {
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if let GuardedIndex::Expression(expr) = *self {
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*self = GuardedIndex::from_expression(expr, function, module);
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*self = GuardedIndex::from_expression(expr, expressions, module);
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}
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}
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pub(crate) fn from_expression(
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expr: Handle<crate::Expression>,
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function: &crate::Function,
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expressions: &crate::Arena<crate::Expression>,
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module: &crate::Module,
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) -> Self {
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match module
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.to_ctx()
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.eval_expr_to_u32_from(expr, &function.expressions)
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{
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match module.to_ctx().eval_expr_to_u32_from(expr, expressions) {
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Ok(value) => Self::Known(value),
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Err(_) => Self::Expression(expr),
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}
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