[PATCH] D100776: [clang/Basic] Make TargetInfo.h not use DataLayout again

[Nico Weber via Phabricator via cfe-commits]

thakis created this revision.
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Reverts parts of https://reviews.llvm.org/D17183, but keeps the
resetDataLayout() API and adds an assert that checks that datalayout string and
user label prefix are in sync.

Approach 1 in https://reviews.llvm.org/D17183#2653279
Reduces number of TUs build for 'clang-format' from 689 to 575.

I also implemented approach 1 in D100764 <https://reviews.llvm.org/D100764>. If someone feels motivated
to make us use DataLayout more, it's easy to revert this change here
and go with D100764 <https://reviews.llvm.org/D100764> instead. I don't plan on doing more work in this
area though, so I prefer going with the smaller, more self-consistent change.


https://reviews.llvm.org/D100776

Files:
  clang/include/clang/Basic/TargetInfo.h
  clang/include/clang/CodeGen/BackendUtil.h
  clang/lib/AST/Mangle.cpp
  clang/lib/Basic/CMakeLists.txt
  clang/lib/Basic/TargetInfo.cpp
  clang/lib/Basic/Targets/AArch64.cpp
  clang/lib/Basic/Targets/AMDGPU.cpp
  clang/lib/Basic/Targets/ARM.cpp
  clang/lib/Basic/Targets/PPC.h
  clang/lib/Basic/Targets/X86.h
  clang/lib/CodeGen/BackendUtil.cpp
  clang/lib/CodeGen/CodeGenAction.cpp
  clang/lib/CodeGen/ModuleBuilder.cpp
  clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp
  clang/lib/Frontend/InitPreprocessor.cpp
  clang/unittests/AST/DeclTest.cpp
  llvm/utils/gn/secondary/clang/lib/Basic/BUILD.gn

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