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| author | Douglas Gregor <dgregor@apple.com> | 2009-06-19 23:52:42 +0000 |
|---|---|---|
| committer | Douglas Gregor <dgregor@apple.com> | 2009-06-19 23:52:42 +0000 |
| commit | e0762c92110dfdcdd207db461a4ea17afd168f1e (patch) | |
| tree | ca454873887ffee6570e846ff9e56289360f18f2 /lib/Frontend/PCHWriterDecl.cpp | |
| parent | 7d5c74ecbbd8719436c071f38657bc8e97ee4a24 (diff) | |
Keep track of when declarations are "used" according to C and
C++. This logic is required to trigger implicit instantiation of
function templates and member functions of class templates, which will
be implemented separately.
This commit includes support for -Wunused-parameter, printing warnings
for named parameters that are not used within a function/Objective-C
method/block. Fixes <rdar://problem/6505209>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73797 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Frontend/PCHWriterDecl.cpp')
| -rw-r--r-- | lib/Frontend/PCHWriterDecl.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Frontend/PCHWriterDecl.cpp b/lib/Frontend/PCHWriterDecl.cpp index 55cff663c5..5173ce3312 100644 --- a/lib/Frontend/PCHWriterDecl.cpp +++ b/lib/Frontend/PCHWriterDecl.cpp @@ -82,6 +82,7 @@ void PCHDeclWriter::VisitDecl(Decl *D) { Record.push_back(D->isInvalidDecl()); Record.push_back(D->hasAttrs()); Record.push_back(D->isImplicit()); + Record.push_back(D->isUsed()); Record.push_back(D->getAccess()); } @@ -360,6 +361,7 @@ void PCHDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { // know are true of all PARM_VAR_DECLs. if (!D->hasAttrs() && !D->isImplicit() && + !D->isUsed() && D->getAccess() == AS_none && D->getStorageClass() == 0 && !D->hasCXXDirectInitializer() && // Can params have this ever? @@ -434,6 +436,7 @@ void PCHWriter::WriteDeclsBlockAbbrevs() { Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs Abv->Add(BitCodeAbbrevOp(0)); // isImplicit + Abv->Add(BitCodeAbbrevOp(0)); // isUsed Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier // NamedDecl |