Revert rL349624 : Let TableGen write output only if it changed, instead of doing...
authorSimon Pilgrim <llvm-dev@redking.me.uk>
Tue, 1 Oct 2019 13:39:43 +0000 (13:39 +0000)
committerSimon Pilgrim <llvm-dev@redking.me.uk>
Tue, 1 Oct 2019 13:39:43 +0000 (13:39 +0000)
commit9eb2bd6b8d6d31cee53f4f89dd9189da721ed4a8
treea822243583ece7fc0348c7bb75066dd685d2c234
parente4e305e5eea536fb9d9dc64f612b164822d4bf34
Revert rL349624 : Let TableGen write output only if it changed, instead of doing so in cmake, attempt 2

Differential Revision: https://reviews.llvm.org/D55842
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As discussed on PR43385 this is causing Visual Studio msbuilds to perpetually rebuild all tablegen generated files

llvm-svn: 373338
llvm/cmake/modules/TableGen.cmake
llvm/lib/TableGen/Main.cpp
llvm/utils/gn/secondary/llvm/utils/TableGen/tablegen.gni