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[CMake][MLIR][Linalg] Adding variable to specify tablegen file dependencies.

Synchronizing multiple custom targets requires not only target but also
file dependencies. Building Linalg involves running yaml-gen followed by
tablegen. Currently, these custom targets are only synchronized using a
target dependency resulting in issues in specific incremental build
setups (https://llvm.discourse.group/t/missing-build-cmake-tblgen-dependency/3727/10).

This patch introduces a novel LLVM_TARGET_DEPENDS variable to the
TableGen.cmake file to provide a way to specify file dependencies.
Additionally, it adapts the Linalg CMakeLists.txt to introduce the
necessary file dependency between yaml-gen and tablegen.

Differential Revision: https://reviews.llvm.org/D105272
This commit is contained in:
Tobias Gysi 2021-07-01 16:41:35 +00:00
parent 856c1b08d5
commit d1d5a9b638

View File

@ -1,4 +1,5 @@
# LLVM_TARGET_DEFINITIONS must contain the name of the .td file to process.
# LLVM_TARGET_DEFINITIONS must contain the name of the .td file to process,
# while LLVM_TARGET_DEPENDS may contain additional file dependencies.
# Extra parameters for `tblgen' may come after `ofn' parameter.
# Adds the name of the generated file to TABLEGEN_OUTPUT.
@ -104,6 +105,7 @@ function(tablegen project ofn)
DEPENDS ${${project}_TABLEGEN_TARGET} ${${project}_TABLEGEN_EXE}
${local_tds} ${global_tds}
${LLVM_TARGET_DEFINITIONS_ABSOLUTE}
${LLVM_TARGET_DEPENDS}
COMMENT "Building ${ofn}..."
)