[all-commits] [llvm/llvm-project] 40df06: [CUDA][HIP] Defer overloading resolution diagnosti...

[Yaxun (Sam) Liu via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 40df06cdafc010002fc9cfe1dda73d689b7d27a6
      https://github.com/llvm/llvm-project/commit/40df06cdafc010002fc9cfe1dda73d689b7d27a6
  Author: Yaxun (Sam) Liu <yaxun.liu at amd.com>
  Date:   2020-09-17 (Thu, 17 Sep 2020)

  Changed paths:
    M clang/include/clang/Basic/Diagnostic.td
    M clang/include/clang/Basic/DiagnosticAST.h
    M clang/include/clang/Basic/DiagnosticAnalysis.h
    M clang/include/clang/Basic/DiagnosticComment.h
    M clang/include/clang/Basic/DiagnosticCrossTU.h
    M clang/include/clang/Basic/DiagnosticDriver.h
    M clang/include/clang/Basic/DiagnosticFrontend.h
    M clang/include/clang/Basic/DiagnosticIDs.h
    M clang/include/clang/Basic/DiagnosticLex.h
    M clang/include/clang/Basic/DiagnosticParse.h
    M clang/include/clang/Basic/DiagnosticRefactoring.h
    M clang/include/clang/Basic/DiagnosticSema.h
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/include/clang/Basic/DiagnosticSerialization.h
    M clang/include/clang/Basic/LangOptions.def
    M clang/include/clang/Driver/Options.td
    M clang/include/clang/Sema/Sema.h
    M clang/lib/Basic/DiagnosticIDs.cpp
    M clang/lib/Driver/ToolChains/Cuda.cpp
    M clang/lib/Driver/ToolChains/HIP.cpp
    M clang/lib/Frontend/CompilerInvocation.cpp
    M clang/lib/Sema/AnalysisBasedWarnings.cpp
    M clang/lib/Sema/Sema.cpp
    M clang/lib/Sema/SemaAttr.cpp
    M clang/lib/Sema/SemaCUDA.cpp
    M clang/lib/Sema/SemaDecl.cpp
    M clang/lib/Sema/SemaExprObjC.cpp
    M clang/lib/Sema/SemaOpenMP.cpp
    M clang/lib/Sema/SemaOverload.cpp
    M clang/lib/Sema/SemaSYCL.cpp
    M clang/lib/Sema/SemaStmt.cpp
    M clang/lib/Sema/SemaStmtAsm.cpp
    M clang/lib/Sema/SemaTemplateInstantiate.cpp
    M clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
    M clang/lib/Sema/SemaTemplateVariadic.cpp
    M clang/lib/Sema/SemaType.cpp
    A clang/test/SemaCUDA/deferred-oeverload.cu
    M clang/test/TableGen/DiagnosticBase.inc
    A clang/test/TableGen/deferred-diag.td
    M clang/tools/diagtool/DiagnosticNames.cpp
    M clang/utils/TableGen/ClangDiagnosticsEmitter.cpp

  Log Message:
  -----------
  [CUDA][HIP] Defer overloading resolution diagnostics for host device functions

In CUDA/HIP a function may become implicit host device function by
pragma or constexpr. A host device function is checked in both
host and device compilation. However it may be emitted only
on host or device side, therefore the diagnostics should be
deferred until it is known to be emitted.

Currently clang is only able to defer certain diagnostics. This causes
false alarms and limits the usefulness of host device functions.

This patch lets clang defer all overloading resolution diagnostics for host device functions.

An option -fgpu-defer-diag is added to control this behavior. By default
it is off.

It is NFC for other languages.

Differential Revision: https://reviews.llvm.org/D84364