Switch sema to maintaining its own scope chain information for variable
shadowing, instead of threading it through the AST.  This patch contributed
by Argiris Kirtzidis!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49520 91177308-0d34-0410-b5e6-96231b3b80d8

Fix rdar://5843510 don't assert and die when an invalid output
file is specified, print a happy little error message.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49518 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed some logic errors in the CF ref count checker; we now can detect simple
use-after-release errors.  Added test case.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49509 91177308-0d34-0410-b5e6-96231b3b80d8

Patch for:
1) objc ivar processing is split out of ActOnField into its own ActOnIvar method.
2) the new objc ivar action takes visibility info directly, eliminating
  AllVisibilities in ParseObjCClassInstanceVariables.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49506 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify CF ref. count checker state machine.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49505 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some bonehead bugs in summary generation in CFRefCount.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49503 91177308-0d34-0410-b5e6-96231b3b80d8

Used --checker-simple.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49501 91177308-0d34-0410-b5e6-96231b3b80d8

Refactored all logic to run the GRSimpleVals and CFRef checker into a common
code path in the clang driver.

Renamed options --grsimple to -checker-simple and -check-cfref to -checker-cfref.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49500 91177308-0d34-0410-b5e6-96231b3b80d8

reduce the amount of 'C++ magic' this code depends on :)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49489 91177308-0d34-0410-b5e6-96231b3b80d8

CFRefCount analysis now properly calls "EmitWarnings" after analyzing a function.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49488 91177308-0d34-0410-b5e6-96231b3b80d8

When not emitting path diagnostics in BugReporter::EmitWarning(), use the
BugReport-specific SourceRanges (when available).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49486 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed regressions in error reporting due to copy-paste errors (using the "begin"
iterator instead of "end") and not implementing "getDescription()" for Nil
argument checks.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49485 91177308-0d34-0410-b5e6-96231b3b80d8

refactor Parser::ParseStructDeclaration to return a vector of uninterpreted
declarators.  This allows the clients (C structs, objc classes, objc
properties, [future] C++ classes) etc, to do custom processing before invoking
an action.

This has two benefits in the short term:
1) objc ivar processing should be split out of ActOnField into its own ActOn method.
2) the new objc ivar action can take visibility info directly, eliminating
   AllVisibilities in ParseObjCClassInstanceVariables.
3) objc properties can pass their own special sauce down to sema as well.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49468 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify lifetime of location object.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49467 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49464 91177308-0d34-0410-b5e6-96231b3b80d8

 typedef void T;
 void f(T);

is only invalid in C++ mode, not C89 mode.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49460 91177308-0d34-0410-b5e6-96231b3b80d8

Several improvements from Doug Gregor related to default
argument handling.  I'll fix up the c89 (void) thing next.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49459 91177308-0d34-0410-b5e6-96231b3b80d8

Hooked up initial reference-count checks to the BugReporter interface.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49455 91177308-0d34-0410-b5e6-96231b3b80d8

Major refactoring/cleanup of GRExprEngine, ExplodedGraph, and BugReporter.

Bugs are now reported using a combination of "BugType" (previously
BugDescription) and Bug "BugReport" objects, which are fed to BugReporter (which
generates PathDiagnostics). This provides a far more modular way of registering
bug types and plugging in diagnostics.

GRExprEngine now owns its copy of GRCoreEngine, and is not owned by the
ExplodedGraph.

ExplodedGraph is no longer templated on the "checker", but instead on the state
contained in the nodes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49453 91177308-0d34-0410-b5e6-96231b3b80d8

The dtor CGObjCRuntime::~CGObjCRuntime() was implemented twice, once
in CGObjCGNU.cpp and once in CGObjCEtoile.cpp.  Moved its definition to
CGObjC.cpp.  This resolves a build error in Xcode, and also cleans things up.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49429 91177308-0d34-0410-b5e6-96231b3b80d8

Add SemaDeclCXX.cpp to Xcode project.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49428 91177308-0d34-0410-b5e6-96231b3b80d8

Micro-optimization: Don't use ostringstream when using a C-string literal
will work just fine.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49427 91177308-0d34-0410-b5e6-96231b3b80d8

Added some boilerplate for emitting warnings from the CF-reference count checker.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49414 91177308-0d34-0410-b5e6-96231b3b80d8

Added new "BugReporterHelper" class which is used by BugReporter to emit
checker-specific diagnostics.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49412 91177308-0d34-0410-b5e6-96231b3b80d8

For -emit-html, use the Rewriter to expand tabs.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49409 91177308-0d34-0410-b5e6-96231b3b80d8

Don't expand tabs in EscapeText, but rather expand them when writing out
the HTML file.  This should reduce the amount of memory pressure on the
rewriter for files that have a lot of tabs.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49406 91177308-0d34-0410-b5e6-96231b3b80d8

Add HTMLRewrite.h to Xcode project.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49405 91177308-0d34-0410-b5e6-96231b3b80d8

When substituting tabs during HTMLification, only add " " when we are
"escaping" spaces.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49404 91177308-0d34-0410-b5e6-96231b3b80d8

Improve range highlighting in HTMLDiagnostic to correctly highlight ranges
that span multiple lines by inserting multiple "</span>" and "<span>" tags.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49403 91177308-0d34-0410-b5e6-96231b3b80d8

Make SourceManager::getFullFilePos() public.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49402 91177308-0d34-0410-b5e6-96231b3b80d8

Changed the Decl::Kind enum of the ObjCPropertyDecl class, so that it follows
the pattern of the other Decl classes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49399 91177308-0d34-0410-b5e6-96231b3b80d8

Set the location of ccc-analyzer to be the same directory as where scan-build
is located.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49397 91177308-0d34-0410-b5e6-96231b3b80d8

silence some warnings when assertions are disabled.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49372 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for C++ default arguments, and rework Parse-Sema
interaction for function parameters, fixing PR2046.

Patch by Doug Gregor!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49370 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for C++ default arguments, and rework Parse-Sema
interaction for function parameters, fixing PR2046.

Patch by Doug Gregor!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49369 91177308-0d34-0410-b5e6-96231b3b80d8

Fix rdar://5846705: "clang -E foo.c -o foo.i" should remove foo.i on error.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49368 91177308-0d34-0410-b5e6-96231b3b80d8

Add ids for line numbers, allowing us to jump to arbitrary line numbers within
an HTMLified source file.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49359 91177308-0d34-0410-b5e6-96231b3b80d8

Left-justify text in report table.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49358 91177308-0d34-0410-b5e6-96231b3b80d8

Tweak message bubble color (gold)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49357 91177308-0d34-0410-b5e6-96231b3b80d8

Improve BugReport diagnostics for loops and ? operator.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49356 91177308-0d34-0410-b5e6-96231b3b80d8

Fix analyzer breakage introduced by r49213: http://llvm.org/viewvc/llvm-project?rev=49213&view=rev

The problem is that some clients of gcc lookout at the stdout output of gcc;
this requires that all the analyzer diagnostics go to stderr to avoid polluting
stdout.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49355 91177308-0d34-0410-b5e6-96231b3b80d8

Pass the ASTContext object around when deserializing Decl and Stmt objects, so
they can be created using the same allocator as in the "from source code" case.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49353 91177308-0d34-0410-b5e6-96231b3b80d8

Have Parser::FuzzyParseMicrosoftAsmStatement() return the null statement (';').

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49349 91177308-0d34-0410-b5e6-96231b3b80d8

random whitespace fixes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49328 91177308-0d34-0410-b5e6-96231b3b80d8

fix a bug I introduced in my previous checkin.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49327 91177308-0d34-0410-b5e6-96231b3b80d8

simplify array compatibility testing.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49326 91177308-0d34-0410-b5e6-96231b3b80d8

simplify reference handling.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49325 91177308-0d34-0410-b5e6-96231b3b80d8

move some code around, no other change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49324 91177308-0d34-0410-b5e6-96231b3b80d8

simplify compatibility testing for tag types.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49323 91177308-0d34-0410-b5e6-96231b3b80d8

merge compatibility testing of qualified/unqualified interfaces together
and fix a bug.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49322 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a really bad bug where type uniquing would merge a<x> with b<x> as the same
type, because it did not include a/b in the hash.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49321 91177308-0d34-0410-b5e6-96231b3b80d8

MyOtherClass<MyProtocol>* is compatible with MyClass*
if MyClass is a superclass of MyOtherClass, there is no need for
an exact interface match.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49320 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a dead check for compatible builtin types

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49319 91177308-0d34-0410-b5e6-96231b3b80d8

futher simplify compatibility testing of objc interface types.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49318 91177308-0d34-0410-b5e6-96231b3b80d8

ocuvector and vector should be compatible.  Fix ASQual compatibility.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49316 91177308-0d34-0410-b5e6-96231b3b80d8

Fix comment typo, do reference eval at the correct type.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49315 91177308-0d34-0410-b5e6-96231b3b80d8

simplify vector type compatibility testing.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49314 91177308-0d34-0410-b5e6-96231b3b80d8

move ObjCQualifiedIdTypesAreCompatible out of ASTContext into Sema.
While it is similar to the other compatibility predicates in ASTContext,
it is not used by them and is different.

In addition, greatly simplify ObjCQualifiedIdTypesAreCompatible and
fix some canonical type bugs.  Also, simplify my Type::getAsObjC* methods.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49313 91177308-0d34-0410-b5e6-96231b3b80d8

Replace an O(n^2) algorithm in areCompatObjCQualInterfaces with
an O(n) algorithm by taking advantage of the fact that the
protocol qualifier list is already guaranteed sorted.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49312 91177308-0d34-0410-b5e6-96231b3b80d8

improve comments.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49311 91177308-0d34-0410-b5e6-96231b3b80d8

move sorting of qualifying protocols from the parser into
sema.  This allows clients of the parser to have the unmolested
list if desired, and guarantees that noone can create an
ObjCQualifiedInterfaceType with an unsorted list.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49310 91177308-0d34-0410-b5e6-96231b3b80d8

add an example.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49309 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate getReferencedProtocols from
ObjCQualifiedIdType/ObjCQualifiedInterfaceType, adding an interator
interface instead.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49308 91177308-0d34-0410-b5e6-96231b3b80d8

make QualifiedInterfaceTypesAreCompatible a static function
and start simplifying it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49307 91177308-0d34-0410-b5e6-96231b3b80d8

This predicate is just a generic "issuperclass" predicate, move it to the
ObjCInterfaceType as a method.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49306 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify some objc compatibility testing, make interfaceTypesAreCompatible
a static function named isCompatibleInterfaceAssign.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49305 91177308-0d34-0410-b5e6-96231b3b80d8

simplify the logic in ASTContext::objcTypesAreCompatible

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49302 91177308-0d34-0410-b5e6-96231b3b80d8

clean up some logic in objc type handling.  Specifically, make it so that
there are QualType::getAsObjc* type methods, and make isa<ObjCInterfaceType>
return true for ObjCQualifiedInterfaceType's.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49300 91177308-0d34-0410-b5e6-96231b3b80d8

trivial changes to getFloatingTypeOfSizeWithinDomain, nothing significant.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49298 91177308-0d34-0410-b5e6-96231b3b80d8

simplify max type computation by making it return an integer (like
getFloatingTypeOrder) instead of a type.  Fix a fixme.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49297 91177308-0d34-0410-b5e6-96231b3b80d8

minor simplifications/cleanups to type comparisons.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49296 91177308-0d34-0410-b5e6-96231b3b80d8

remove the Decl::getCanonicalType() method.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49295 91177308-0d34-0410-b5e6-96231b3b80d8

remove a use of getCanonicalType.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49294 91177308-0d34-0410-b5e6-96231b3b80d8

Start switching clients over from CT.getCanonicalType() to Context.getCanonicalType(CT) for PR2189.

While I'm at it, clean up a bit of maxIntegerType.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49292 91177308-0d34-0410-b5e6-96231b3b80d8

introduce a new ASTContext::getCanonicalType method.  This is the first
step towards fixing PR2189.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49291 91177308-0d34-0410-b5e6-96231b3b80d8

remove the old non-parallel test system.  'make' in clang/test now runs
the tests in parallel.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49290 91177308-0d34-0410-b5e6-96231b3b80d8

Use EnumType to simplify some code.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49289 91177308-0d34-0410-b5e6-96231b3b80d8

make use of EnumType to simplify some code, eliminate warnings
when assertions are disabled.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49288 91177308-0d34-0410-b5e6-96231b3b80d8

Make EnumType/RecordType classof predicates simpler and more efficient in
some cases.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49287 91177308-0d34-0410-b5e6-96231b3b80d8

add a helper EnumType object for asking about tagtypes for enums.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49286 91177308-0d34-0410-b5e6-96231b3b80d8

tracking API changes arising from r49277

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49279 91177308-0d34-0410-b5e6-96231b3b80d8

move a semantic check out of the parser into sema.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49273 91177308-0d34-0410-b5e6-96231b3b80d8

now that identifier list parsing is split out, simplify handling of
normal typed argument lists.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49272 91177308-0d34-0410-b5e6-96231b3b80d8

reject 'int test(x, x) int x; {}'

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49271 91177308-0d34-0410-b5e6-96231b3b80d8

reject 'typedef int y; int test(x, y)'.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49270 91177308-0d34-0410-b5e6-96231b3b80d8

simplify Parser::ParseFunctionDeclaratorIdentifierList

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49269 91177308-0d34-0410-b5e6-96231b3b80d8

split parsing of identifier lists in function declarators out into
their own method.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49268 91177308-0d34-0410-b5e6-96231b3b80d8

minor simplification

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49267 91177308-0d34-0410-b5e6-96231b3b80d8

finish up throw parsing.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49266 91177308-0d34-0410-b5e6-96231b3b80d8

split code for handling grouping parens in declarators from code that
handles function argument parens in declarators.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49265 91177308-0d34-0410-b5e6-96231b3b80d8

another minor simplification

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49264 91177308-0d34-0410-b5e6-96231b3b80d8

Use token lookahead to simplify some code that is rarely executed.
Since it is rare, the cost is not significant and we enjoy the
simplification.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49263 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug I introduced in my const'ification patch.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49262 91177308-0d34-0410-b5e6-96231b3b80d8

This patch contains these changes:

-Renamed ContextDecl -> DeclContext
-Removed DeclContext pointer from FieldDecl
-EnumDecl inherits from DeclContext, instead of TagDecl

Patch by Argiris Kirtzidis!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49261 91177308-0d34-0410-b5e6-96231b3b80d8

fix css font name, patch by Cédric Venet

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49260 91177308-0d34-0410-b5e6-96231b3b80d8

don't dereference hte end iterator when inserting at end of buffer.
Patch by Cédric Venet!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49259 91177308-0d34-0410-b5e6-96231b3b80d8

templates can't be static.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49258 91177308-0d34-0410-b5e6-96231b3b80d8

fix a number of const qualification bugs.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49257 91177308-0d34-0410-b5e6-96231b3b80d8

add a missing #include

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49256 91177308-0d34-0410-b5e6-96231b3b80d8

Fix handling of implicit int, resolving PR2012 and reverting (and
subsuming) my patch for PR1999.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49251 91177308-0d34-0410-b5e6-96231b3b80d8