llvm-project

a6494a3b - [HLSL][RootSignature] Allow for multiple parsing errors in `RootSignatureParser` (#147832)

[HLSL][RootSignature] Allow for multiple parsing errors in `RootSignatureParser` (#147832) This pr implements returning multiple parsing errors at the granularity of a `RootElement` This is achieved by adding a new interface onto `RootSignatureParser`, namely, `skipUntilExpectedToken`. This will be used to consume all the intermediate tokens between when an error has occurred and when the next `RootElement` begins. At this granularity, the implementation is somewhat straight forward, as we can just implement this `skip` function when we return from a `parse[RootElement]` method and continue in the main `parse` loop. With the exception that the `parseDescriptorTable` will also have to skip ahead to the next expected closing `')'`. If we want to provide any finer granularity, then the skip logic becomes significantly more complicated. Skipping to the next root element will provide a good ratio of user experience benefit to complexity of implementation. For more context see linked issue. - Updates `HLSLRootSignatureParser` with a `skipUntilExpectedToken` and `skipUntilClosedParen` interface - Updates the `parse` loops to use the skip interface when an error is found on parsing a root element - Updates `parseDescriptorTable` to skip ahead to the next `')'` if it was inside a clause - Adds test-case to demonstrate multiple error being reported Resolves: https://github.com/llvm/llvm-project/issues/145818