[llvm-bugs] [Bug 49371] New: mlir 12.0 fails to build on aarch64 with clang 11.0.1

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=49371

            Bug ID: 49371
           Summary: mlir 12.0 fails to build on aarch64 with clang 11.0.1
           Product: new-bugs
           Version: trunk
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: bero at lindev.ch
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org

This is a bug in 11.0.1 that has already been fixed in 12.0, but it makes
updating from 11 to 12 hard (you have to first build llvm with mlir disabled,
then build it with mlir enabled using the newly built version).

Building 12.0 on aarch64 with 11.0.1 barfs with

FAILED: tools/mlir/include/mlir/Dialect/Linalg/IR/LinalgNamedStructuredOps.td
tools/mlir/include/mlir/Dialect/Linalg/IR/LinalgNamedStructuredOps.cpp.inc 
cd
/home/bero/abf/llvm/BUILD/llvm-project-release-12.x/build/tools/mlir/include/mlir/Dialect/Linalg/IR
&&
/home/bero/abf/llvm/BUILD/llvm-project-release-12.x/build/bin/mlir-linalg-ods-gen
-gen-ods-decl
/home/bero/abf/llvm/BUILD/llvm-project-release-12.x/mlir/include/mlir/Dialect/Linalg/IR/LinalgNamedStructuredOpsSpec.tc
>
/home/bero/abf/llvm/BUILD/llvm-project-release-12.x/build/tools/mlir/include/mlir/Dialect/Linalg/IR/LinalgNamedStructuredOps.td
&&
/home/bero/abf/llvm/BUILD/llvm-project-release-12.x/build/bin/mlir-linalg-ods-gen
-gen-impl
/home/bero/abf/llvm/BUILD/llvm-project-release-12.x/mlir/include/mlir/Dialect/Linalg/IR/LinalgNamedStructuredOpsSpec.tc
>
/home/bero/abf/llvm/BUILD/llvm-project-release-12.x/build/tools/mlir/include/mlir/Dialect/Linalg/IR/LinalgNamedStructuredOps.cpp.inc
mlir-linalg-ods-gen:
/home/bero/abf/llvm/BUILD/llvm-project-release-12.x/llvm/include/llvm/ADT/DenseMap.h:1261:
DenseMapIterator<KeyT, ValueT, KeyInfoT, Bucket, IsConst>
&llvm::DenseMapIterator<mlir::ThreadLocalCache<llvm::DenseSet<(anonymous
namespace)::ParametricStorageUniquer::HashedStorage, (anonymous
namespace)::ParametricStorageUniquer::StorageKeyInfo>> *,
std::weak_ptr<llvm::DenseSet<(anonymous
namespace)::ParametricStorageUniquer::HashedStorage, (anonymous
namespace)::ParametricStorageUniquer::StorageKeyInfo>>,
llvm::DenseMapInfo<mlir::ThreadLocalCache<llvm::DenseSet<(anonymous
namespace)::ParametricStorageUniquer::HashedStorage, (anonymous
namespace)::ParametricStorageUniquer::StorageKeyInfo>> *>,
llvm::detail::DenseMapPair<mlir::ThreadLocalCache<llvm::DenseSet<(anonymous
namespace)::ParametricStorageUniquer::HashedStorage, (anonymous
namespace)::ParametricStorageUniquer::StorageKeyInfo>> *,
std::weak_ptr<llvm::DenseSet<(anonymous
namespace)::ParametricStorageUniquer::HashedStorage, (anonymous
namespace)::ParametricStorageUniquer::StorageKeyInfo>>>, false>::operator++()
[KeyT = mlir::ThreadLocalCache<llvm::DenseSet<(anonymous
namespace)::ParametricStorageUniquer::HashedStorage, (anonymous
namespace)::ParametricStorageUniquer::StorageKeyInfo>> *, ValueT =
std::weak_ptr<llvm::DenseSet<(anonymous
namespace)::ParametricStorageUniquer::HashedStorage, (anonymous
namespace)::ParametricStorageUniquer::StorageKeyInfo>>, KeyInfoT =
llvm::DenseMapInfo<mlir::ThreadLocalCache<llvm::DenseSet<(anonymous
namespace)::ParametricStorageUniquer::HashedStorage, (anonymous
namespace)::ParametricStorageUniquer::StorageKeyInfo>> *>, Bucket =
llvm::detail::DenseMapPair<mlir::ThreadLocalCache<llvm::DenseSet<(anonymous
namespace)::ParametricStorageUniquer::HashedStorage, (anonymous
namespace)::ParametricStorageUniquer::StorageKeyInfo>> *,
std::weak_ptr<llvm::DenseSet<(anonymous
namespace)::ParametricStorageUniquer::HashedStorage, (anonymous
namespace)::ParametricStorageUniquer::StorageKeyInfo>>>, IsConst = false]:
Assertion `Ptr != End && "incrementing end() iterator"' failed.


If there is an easy known workaround for this, it may make sense to apply it to
ease updating.

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