History log of /external/clang/lib/Sema/SemaLambda.cpp
Revision Date Author Comments (<<< Hide modified files) (Show modified files >>>)
ef8225444452a1486bd721f3285301fe84643b00 21-Jul-2014 Stephen Hines <srhines@google.com> Update Clang for rebase to r212749.

This also fixes a small issue with arm_neon.h not being generated always.

Includes a cherry-pick of:
r213450 - fixes mac-specific header issue
r213126 - removes a default -Bsymbolic on Android

Change-Id: I2a790a0f5d3b2aab11de596fc3a74e7cbc99081d
/external/clang/lib/Sema/SemaLambda.cpp
6bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89 29-May-2014 Stephen Hines <srhines@google.com> Update Clang for 3.5 rebase (r209713).

Change-Id: I8c9133b0f8f776dc915f270b60f94962e771bc83
/external/clang/lib/Sema/SemaLambda.cpp
651f13cea278ec967336033dd032faef0e9fc2ec 24-Apr-2014 Stephen Hines <srhines@google.com> Updated to Clang 3.5a.

Change-Id: I8127eb568f674c2e72635b639a3295381fe8af82
/external/clang/lib/Sema/SemaLambda.cpp
2434dcfb022778b06cfd257d830d0249680b87cf 05-Dec-2013 Bill Wendling <isanbard@gmail.com> Merging r196454:
------------------------------------------------------------------------
r196454 | faisalv | 2013-12-04 17:40:41 -0800 (Wed, 04 Dec 2013) | 43 lines

Fix init-captures for generic lambdas.

For an init capture, process the initialization expression
right away. For lambda init-captures such as the following:
const int x = 10;
auto L = [i = x+1](int a) {
return [j = x+2,
&k = x](char b) { };
};
keep in mind that each lambda init-capture has to have:
- its initialization expression executed in the context
of the enclosing/parent decl-context.
- but the variable itself has to be 'injected' into the
decl-context of its lambda's call-operator (which has
not yet been created).
Each init-expression is a full-expression that has to get
Sema-analyzed (for capturing etc.) before its lambda's
call-operator's decl-context, scope & scopeinfo are pushed on their
respective stacks. Thus if any variable is odr-used in the init-capture
it will correctly get captured in the enclosing lambda, if one exists.
The init-variables above are created later once the lambdascope and
call-operators decl-context is pushed onto its respective stack.

Since the lambda init-capture's initializer expression occurs in the
context of the enclosing function or lambda, therefore we can not wait
till a lambda scope has been pushed on before deciding whether the
variable needs to be captured. We also need to process all
lvalue-to-rvalue conversions and discarded-value conversions,
so that we can avoid capturing certain constant variables.
For e.g.,
void test() {
const int x = 10;
auto L = [&z = x](char a) { <-- don't capture by the current lambda
return [y = x](int i) { <-- don't capture by enclosing lambda
return y;
}
};
If x was not const, the second use would require 'L' to capture, and
that would be an error.
Make sure TranformLambdaExpr is also aware of this.

Patch approved by Richard (Thanks!!)
http://llvm-reviews.chandlerc.com/D2092
------------------------------------------------------------------------


git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_34@196470 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
c00e4194296e994efab0e4bf64ca66737850bdf0 07-Nov-2013 Faisal Vali <faisalv@yahoo.com> This patch implements capturing of variables within generic lambdas.

Both Richard and I felt that the current wording in the working paper needed some tweaking - Please see http://llvm-reviews.chandlerc.com/D2035 for additional context and references to core-reflector messages that discuss wording tweaks.

What is implemented is what we had intended to specify in Bristol; but, recently felt that the specification might benefit from some tweaking and fleshing.

As a rough attempt to explain the semantics: If a nested lambda with a default-capture names a variable within its body, and if the enclosing full expression that contains the name of that variable is instantiation-dependent - then an enclosing lambda that is capture-ready (i.e. within a non-dependent context) must capture that variable, if all intervening nested lambdas can potentially capture that variable if they need to, and all intervening parent lambdas of the capture-ready lambda can and do capture the variable.

Of note, 'this' capturing is also currently underspecified in the working paper for generic lambdas. What is implemented here is if the set of candidate functions in a nested generic lambda includes both static and non-static member functions (regardless of viability checking - i.e. num and type of parameters/arguments) - and if all intervening nested-inner lambdas between the capture-ready lambda and the function-call containing nested lambda can capture 'this' and if all enclosing lambdas of the capture-ready lambda can capture 'this', then 'this' is speculatively captured by that capture-ready lambda.

Hopefully a paper for the C++ committee (that Richard and I had started some preliminary work on) is forthcoming.

This essentially makes generic lambdas feature complete, except for known bugs. The more prominent ones (and the ones I am currently aware of) being:
- generic lambdas and init-captures are broken - but a patch that fixes this is already in the works ...
- nested variadic expansions such as:
auto K = [](auto ... OuterArgs) {
vp([=](auto ... Is) {
decltype(OuterArgs) OA = OuterArgs;
return 0;
}(5)...);
return 0;
};
auto M = K('a', ' ', 1, " -- ", 3.14);
currently cause crashes. I think I know how to fix this (since I had done so in my initial implementation) - but it will probably take some work and back & forth with Doug and Richard.

A warm thanks to all who provided feedback - and especially to Doug Gregor and Richard Smith for their pivotal guidance: their insight and prestidigitation in such matters is boundless!

Now let's hope this commit doesn't upset the buildbot gods ;)

Thanks!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194188 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
6bae51a21c29e00050dddc76f3ea42af21745ebd 05-Nov-2013 David Majnemer <david.majnemer@gmail.com> Sema: Improve comment introduced in r193397


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194052 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
9d33c40838367ffcc3206a7120a0ce32922b66d8 25-Oct-2013 David Majnemer <david.majnemer@gmail.com> Sema: Do not allow lambda expressions to appear inside of constant expressions

We would previously not diagnose this which would lead to crashes (on
very strange code).

This fixes PR17675.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193397 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
605f91ffd18f35ffcb5fcdd38379bd09b67a6cb8 24-Oct-2013 Faisal Vali <faisalv@yahoo.com> Fix an instantiation bug with nested generic lambdas and conversion to fptrs.

This patch fixes the typelocs of the conversion-operator and the conversion-operator-name and adds the parameters of the call operator to the FunctionProtoTypeLoc of the respective entities. Thus, when the template declarations (conversion operators) undergo deduction and instantiation/transformation/substitution - they add themselves to the local instantiation scope if needed.

This patch supports the following:

auto L = [](auto b) {
return [](auto a) ->decltype(a) { return a; };
};
int (*fp)(int) = L(8);

Richard LGTM'd this patch: http://llvm-reviews.chandlerc.com/D1831

Thanks!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193294 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
bef582b0159e8f0deb606c7700e3590a6f5a4ab2 23-Oct-2013 Faisal Vali <faisalv@yahoo.com> Refactor out the circular reference to LambdaExpr in CXXRecordDecl.

A prior commit of this patch was reverted because it was within the blamelist's purview of a failing test. The failure of that test has been addressed here: http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20131021/091546.html. Therefore I am recommitting this patch (all tests pass on windows, except for the usual modules & index suspects that never pass on my box).

Some background: Both Doug and Richard had asked me in Chicago to remove the circular reference in CXXRecordDecl to LambdaExpr by factoring out and storing the needed information from LambdaExpr directly into CXXRecordDecl.

In addition, I have added an IsGenericLambda flag - this makes life a little easier when we implement capturing, and are Sema-analyzing the body of a lambda (and the calloperator hasn't been wired to the closure class yet). Any inner lambdas can have potential captures that could require walking up the scope chain and checking if any generic lambdas are capture-ready. This 'bit' makes some of that checking easier.

No change in functionality.

This patch was approved by Doug with minor modifications (comments were cleaned up, and all data members were converted from bool/enum to unsigned, as requested):
http://llvm-reviews.chandlerc.com/D1856

Thanks!



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193246 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
80f2b2e693422f84ec3735f16a08614a527b0bc5 23-Oct-2013 Rafael Espindola <rafael.espindola@gmail.com> Revert r193223 and r193216.

They were causing CodeGenCXX/mangle-exprs.cpp to fail.

Revert "Remove the circular reference to LambdaExpr in CXXRecordDecl."

Revert "Again: Teach TreeTransform and family how to transform generic lambdas nested within templates and themselves."

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193226 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
a4c91afe103063e983aa9bab535e442da8629636 23-Oct-2013 Faisal Vali <faisalv@yahoo.com> Remove the circular reference to LambdaExpr in CXXRecordDecl.

Both Doug and Richard had asked me to remove the circular reference in CXXRecordDecl to LambdaExpr by factoring out and storing the needed information from LambdaExpr directly into CXXRecordDecl.

No change in functionality.

In addition, I have added an IsGenericLambda flag - this makes life a little easier when we implement capturing, and are Sema-analyzing the body of a lambda (and the calloperator hasn't been wired to the closure class yet). Any inner lambdas can have potential captures that could require walking up the scope chain and checking if any generic lambdas are capture-ready. This 'bit' makes some of that checking easier.

This patch was approved by Doug with minor modifications (comments were cleaned up, and all data members were converted from bool/enum to unsigned, as requested):
http://llvm-reviews.chandlerc.com/D1856

Thanks!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193223 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
d6992ab33b7113e1bd7af51c0c52d17c23706c01 29-Sep-2013 Faisal Vali <faisalv@yahoo.com> Implement conversion to function pointer for generic lambdas without captures.

The general strategy is to create template versions of the conversion function and static invoker and then during template argument deduction of the conversion function, create the corresponding call-operator and static invoker specializations, and when the conversion function is marked referenced generate the body of the conversion function using the corresponding static-invoker specialization. Similarly, Codegen does something similar - when asked to emit the IR for a specialized static invoker of a generic lambda, it forwards emission to the corresponding call operator.

This patch has been reviewed in person both by Doug and Richard. Richard gave me the LGTM.

A few minor changes:
- per Richard's request i added a simple check to gracefully inform that captures (init, explicit or default) have not been added to generic lambdas just yet (instead of the assertion violation).
- I removed a few lines of code that added the call operators instantiated parameters to the currentinstantiationscope. Not only did it not handle parameter packs, but it is more relevant in the patch for nested lambdas which will follow this one, and fix that problem more comprehensively.
- Doug had commented that the original implementation strategy of using the TypeSourceInfo of the call operator to create the static-invoker was flawed and allowed const as a member qualifier to creep into the type of the static-invoker. I currently kludge around it - but after my initial discussion with Doug, with a follow up session with Richard, I have added a FIXME so that a more elegant solution that involves the use of TrivialTypeSourceInfo call followed by the correct wiring of the template parameters to the functionprototypeloc is forthcoming.

Thanks!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191634 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
9beaf20b882eb83082da27a74760277bb9fc0bdd 28-Sep-2013 Richard Smith <richard-llvm@metafoo.co.uk> Add compat/extension warnings for init captures.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191609 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
39edfeb34b0b0b8033179e35cf13cd5d95d56fa8 28-Sep-2013 Richard Smith <richard-llvm@metafoo.co.uk> Switch from putting init capture VarDecls in the surrounding DeclContext to
putting them in the call operator's DeclContext. This better matches the
language wording and avoids some cases where code gets confused by them for
namespace-scope lambdas and the like.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191606 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
04fa7a33279808dc3e5117c41b5f84c40eeb7362 28-Sep-2013 Richard Smith <richard-llvm@metafoo.co.uk> Per latest drafting, switch to implementing init-captures as if by declaring
and capturing a variable declaration, and complete the implementation of them.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191605 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
fad9e13f3cb85198f0ee5af620ba81cd78574faa 26-Sep-2013 Faisal Vali <faisalv@yahoo.com> Implement a rudimentary form of generic lambdas.

Specifically, the following features are not included in this commit:
- any sort of capturing within generic lambdas
- generic lambdas within template functions and nested
within other generic lambdas
- conversion operator for captureless lambdas
- ensuring all visitors are generic lambda aware
(Although I have gotten some useful feedback on my patches of the above and will be incorporating that as I submit those patches for commit)

As an example of what compiles through this commit:

template <class F1, class F2>
struct overload : F1, F2 {
using F1::operator();
using F2::operator();
overload(F1 f1, F2 f2) : F1(f1), F2(f2) { }
};

auto Recursive = [](auto Self, auto h, auto ... rest) {
return 1 + Self(Self, rest...);
};
auto Base = [](auto Self, auto h) {
return 1;
};
overload<decltype(Base), decltype(Recursive)> O(Base, Recursive);
int num_params = O(O, 5, 3, "abc", 3.14, 'a');

Please see attached tests for more examples.

This patch has been reviewed by Doug and Richard. Minor changes (non-functionality affecting) have been made since both of them formally looked at it, but the changes involve removal of supernumerary return type deduction changes (since they are now redundant, with richard having committed a recent patch to address return type deduction for C++11 lambdas using C++14 semantics).



Some implementation notes:

- Add a new Declarator context => LambdaExprParameterContext to
clang::Declarator to allow the use of 'auto' in declaring generic
lambda parameters

- Add various helpers to CXXRecordDecl to facilitate identifying
and querying a closure class

- LambdaScopeInfo (which maintains the current lambda's Sema state)
was augmented to house the current depth of the template being
parsed (id est the Parser calls Sema::RecordParsingTemplateParameterDepth)
so that SemaType.cpp::ConvertDeclSpecToType may use it to immediately
generate a template-parameter-type when 'auto' is parsed in a generic
lambda parameter context. (i.e we do NOT use AutoType deduced to
a template parameter type - Richard seemed ok with this approach).
We encode that this template type was generated from an auto by simply
adding $auto to the name which can be used for better diagnostics if needed.

- SemaLambda.h was added to hold some common lambda utility
functions (this file is likely to grow ...)

- Teach Sema::ActOnStartOfFunctionDef to check whether it
is being called to instantiate a generic lambda's call
operator, and if so, push an appropriately prepared
LambdaScopeInfo object on the stack.

- various tests were added - but much more will be needed.

There is obviously more work to be done, and both Richard (weakly) and Doug (strongly)
have requested that LambdaExpr be removed form the CXXRecordDecl LambdaDefinitionaData
in a future patch which is forthcoming.

A greatful thanks to all reviewers including Eli Friedman, James Dennett,
and especially the two gracious wizards (Richard Smith and Doug Gregor)
who spent hours providing feedback (in person in Chicago and on the mailing lists).
And yet I am certain that I have allowed unidentified bugs to creep in; bugs, that I will do my best to slay, once identified!

Thanks!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191453 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
41d0958281627882fbe2049fb887d741eabd3fe3 25-Sep-2013 Richard Smith <richard-llvm@metafoo.co.uk> Refactor to use C++1y 'auto' semantics directly in lambdas with no specified
return type in C++1y mode. No functionality change intended. Extracted and
tweaked from a patch by Faisal Vali!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191354 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
942f9fe11d3a9583eef6bc4ca2549b1f0d1694da 10-Sep-2013 Reid Kleckner <reid@kleckner.net> [ms-cxxabi] Implement guard variables for static initialization

Static locals requiring initialization are not thread safe on Windows.
Unfortunately, it's possible to create static locals that are actually
externally visible with inline functions and templates. As a result, we
have to implement an initialization guard scheme that is compatible with
TUs built by MSVC, which makes thread safety prohibitively difficult.

MSVC's scheme is that every function that requires a guard gets an i32
bitfield. Each static local is assigned a bit that indicates if it has
been initialized, up to 32 bits, at which point a new bitfield is
created. MSVC rejects inline functions with more than 32 static locals,
and the externally visible mangling (?_B) only allows for one guard
variable per function.

On Eli's recommendation, I used MangleNumberingContext to track which
bit each static corresponds to.

Implements PR16888.

Reviewers: rjmccall, eli.friedman

Differential Revision: http://llvm-reviews.chandlerc.com/D1416

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190427 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
86164e8f51fa89a3ec904607c3848dc4a21b12cf 05-Sep-2013 Eli Friedman <eli.friedman@gmail.com> Note when a decl is used in AST files.

When an AST file is built based on another AST file, it can use a decl from
the fist file, and therefore mark the "isUsed" bit. We need to note this in
the AST file so that the bit is set correctly when the second AST file is
loaded.

This patch introduces the distinction between setIsUsed() and markUsed() so
that we don't call into the ASTMutationListener callback when it wouldn't
be appropriate.

Fixes PR16635.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190016 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
ef072033876e295ec5d3402f8730a3ae358ad815 28-Aug-2013 Reid Kleckner <reid@kleckner.net> Delete CC_Default and use the target default CC everywhere

Summary:
Makes functions with implicit calling convention compatible with
function types with a matching explicit calling convention. This fixes
things like calls to qsort(), which has an explicit __cdecl attribute on
the comparator in Windows headers.

Clang will now infer the calling convention from the declarator. There
are two cases when the CC must be adjusted during redeclaration:
1. When defining a non-inline static method.
2. When redeclaring a function with an implicit or mismatched
convention.

Fixes PR13457, and allows clang to compile CommandLine.cpp for the
Microsoft C++ ABI.

Excellent test cases provided by Alexander Zinenko!

Reviewers: rsmith

Differential Revision: http://llvm-reviews.chandlerc.com/D1231

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189412 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
152b4e4652baedfceba1cd8115515629225e713f 22-Aug-2013 Manuel Klimek <klimek@google.com> Revert "Implement a rudimentary form of generic lambdas."

This reverts commit 606f5d7a99b11957e057e4cd1f55f931f66a42c7.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189004 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
28cc16a64a3bbad9e48309eb8b4ee68893cd85d0 22-Aug-2013 Manuel Klimek <klimek@google.com> Revert "Remove some unused variables identified by Juergen Ributzka *I need to turn on this warning in Visual C++ - sorry!*"

This reverts commit d01d0b63d87ac465f15ce1d6b56bf3faf4525769.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189003 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
ebf55350505523b1fe3e43aab8e1e88decb0ad09 22-Aug-2013 Faisal Vali <faisalv@yahoo.com> Remove some unused variables identified by Juergen Ributzka *I need to turn on this warning in Visual C++ - sorry!*

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188979 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
ecb5819a9e64fb654d46a3b270a286cc570c58ff 22-Aug-2013 Faisal Vali <faisalv@yahoo.com> Implement a rudimentary form of generic lambdas.

Specifically, the following features are not included in this commit:
- any sort of capturing within generic lambdas
- nested lambdas
- conversion operator for captureless lambdas
- ensuring all visitors are generic lambda aware


As an example of what compiles:

template <class F1, class F2>
struct overload : F1, F2 {
using F1::operator();
using F2::operator();
overload(F1 f1, F2 f2) : F1(f1), F2(f2) { }
};

auto Recursive = [](auto Self, auto h, auto ... rest) {
return 1 + Self(Self, rest...);
};
auto Base = [](auto Self, auto h) {
return 1;
};
overload<decltype(Base), decltype(Recursive)> O(Base, Recursive);
int num_params = O(O, 5, 3, "abc", 3.14, 'a');

Please see attached tests for more examples.

Some implementation notes:

- Add a new Declarator context => LambdaExprParameterContext to
clang::Declarator to allow the use of 'auto' in declaring generic
lambda parameters

- Augment AutoType's constructor (similar to how variadic
template-type-parameters ala TemplateTypeParmDecl are implemented) to
accept an IsParameterPack to encode a generic lambda parameter pack.

- Add various helpers to CXXRecordDecl to facilitate identifying
and querying a closure class

- LambdaScopeInfo (which maintains the current lambda's Sema state)
was augmented to house the current depth of the template being
parsed (id est the Parser calls Sema::RecordParsingTemplateParameterDepth)
so that Sema::ActOnLambdaAutoParameter may use it to create the
appropriate list of corresponding TemplateTypeParmDecl for each
auto parameter identified within the generic lambda (also stored
within the current LambdaScopeInfo). Additionally,
a TemplateParameterList data-member was added to hold the invented
TemplateParameterList AST node which will be much more useful
once we teach TreeTransform how to transform generic lambdas.

- SemaLambda.h was added to hold some common lambda utility
functions (this file is likely to grow ...)

- Teach Sema::ActOnStartOfFunctionDef to check whether it
is being called to instantiate a generic lambda's call
operator, and if so, push an appropriately prepared
LambdaScopeInfo object on the stack.

- Teach Sema::ActOnStartOfLambdaDefinition to set the
return type of a lambda without a trailing return type
to 'auto' in C++1y mode, and teach the return type
deduction machinery in SemaStmt.cpp to process either
C++11 and C++14 lambda's correctly depending on the flag.

- various tests were added - but much more will be needed.

A greatful thanks to all reviewers including Eli Friedman,
James Dennett and the ever illuminating Richard Smith. And
yet I am certain that I have allowed unidentified bugs to creep in;
bugs, that I will do my best to slay, once identified!

Thanks!




git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188977 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
f68af647dda5cca00b49be27d24f62b0a7fff986 10-Aug-2013 James Dennett <jdennett@google.com> Expose LambdaIntroducer::DefaultLoc in the AST's LambdaExpr.

Summary:
Source-centric tools need access to the location of a C++11
lambda expression's capture-default ('&' or '=') when it's present.
It's possible for them to find it by re-lexing and re-implementing
rules that Clang's parser has already applied, but the cost of storing
the SourceLocation and making it available to them is 32 bits per
LambdaExpr (a small delta, proportionally), and the simplification in
client code is significant.

Reviewers: rsmith

Reviewed By: rsmith

CC: cfe-commits, klimek, revane

Differential Revision: http://llvm-reviews.chandlerc.com/D1192

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188121 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
5e867c8a07d82da0d3b0a43402ee4f1c6ba416e9 10-Jul-2013 Eli Friedman <eli.friedman@gmail.com> More local mangling fixes.

Compute mangling numbers for externally visible local variables and tags.
Change the mangler to consistently use discriminators where necessary.
Tweak the scheme we use to number decls which are not externally visible
to avoid unnecessary discriminators in common cases now that we request
them more consistently.

Fixes <rdar://problem/14204721>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185986 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
09d19efaa147762f84aed55efa7930bb3616a4e5 04-Jul-2013 Craig Topper <craig.topper@gmail.com> Use SmallVectorImpl instead of SmallVector for iterators and references to avoid specifying the vector size unnecessarily.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185610 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
ce9cd911c5b88d375ea1ff9f4719e4d63ce0fa7a 02-Jul-2013 Andy Gibbs <andyg1001@hotmail.co.uk> Suppress "control reaches end of non-void function" warning when compiling with gcc.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185439 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
07369dde9d72213bf8a48288cd8b29999af9a40c 01-Jul-2013 Eli Friedman <eli.friedman@gmail.com> Fix mangling for block literals.

Blocks, like lambdas, can be written in contexts which are required to be
treated as the same under ODR. Unlike lambdas, it isn't possible to actually
take the address of a block, so the mangling of the block itself doesn't
matter. However, objects like static variables inside a block do need to
be mangled in a consistent way.

There are basically three components here. One, block literals need a
consistent numbering. Two, objects/types inside a block literal need
to be mangled using it. Three, objects/types inside a block literal need
to have their linkage computed correctly.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185372 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
ddb5a3926d715ab4354ca36117679e3f4d5d3e21 14-Jun-2013 Eli Friedman <eli.friedman@gmail.com> Unify return type checking for functions and ObjC methods. Move all the
random checks for ObjC object return types to SemaType.cpp.

Fixes issue with ObjC method type checking reported on cfe-dev.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184006 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
95099ef43aff8fb3d5d47bed0a583e7977f4b3f4 13-Jun-2013 Eli Friedman <eli.friedman@gmail.com> Followup to r183931 to fix the lambda conversion-to-block-pointer member.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183942 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
38fa961573efb0fb9ef53f3e8a9e730701bc9375 13-Jun-2013 Eli Friedman <eli.friedman@gmail.com> Fix a small bug in the linkage computation for the lambda conversion-to-function-pointer member.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183931 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
0567a79130a251bf464ce21ecf3f8b9fb5207900 10-Jun-2013 Reid Kleckner <reid@kleckner.net> Use FPT::getArgTypes() instead of manually building ArrayRefs

Made significantly easier with git-clang-format.

Differential Revision: http://llvm-reviews.chandlerc.com/D947

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183694 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
44ee0a710c59d8e6793189f903bae21c16814324 07-Jun-2013 Eli Friedman <eli.friedman@gmail.com> Re-commit r183466 with a fix to make the TypeLoc casting machinery work
correctly in the presence of qualified types.

(I had to change the unittest because it was trying to cast a
QualifiedTypeLoc to TemplateSpecializationTypeLoc.)



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183563 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
20387efff0870da2c8b30bb62ae661239a903021 07-Jun-2013 Manuel Klimek <klimek@google.com> Reverts r183466: "Perform dynamic alignment computations..."

This introduces bugs in TemplateSpecializationTypeLoc's angle bracket
locations.

Regression test follows in a subsequent commit.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183513 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
86875b11db3536858116effd80cbb06b6810303d 07-Jun-2013 Eli Friedman <eli.friedman@gmail.com> Perform dynamic alignment computations so that the data in TypeLocs is
correctly aligned. Not performing such computations led to misaligned loads,
which crash on some platforms and are generally bad on other platforms.

The implementation of TypeLocBuilder::pushImpl is rather messy; code using
TypeLocBuilder accidentally assumes that partial TypeLocs are
laid out like a complete TypeLoc. As a followup, I intend to work on
fixing the TypeLocBuilder API to avoid exposing partial TypeLocs; this should
substantially simplify the implemementation.

Fixes PR16144.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183466 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
0d8e9646bc000bab521ce52ed294209a92298cef 16-May-2013 Richard Smith <richard-llvm@metafoo.co.uk> First pass of semantic analysis for init-captures: check the initializer, build
a FieldDecl from it, and propagate both into the closure type and the
LambdaExpr.

You can't do much useful with them yet -- you can't use them within the body
of the lambda, because we don't have a representation for "the this of the
lambda, not the this of the enclosing context". We also don't have support or a
representation for a nested capture of an init-capture yet, which was intended
to work despite not being allowed by the current standard wording.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181985 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
0a664b863255065d960342dd074a77d63c753d35 09-May-2013 Richard Smith <richard-llvm@metafoo.co.uk> C++1y n3648: parse and reject init-captures for now.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181553 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
70133b5b4ad863f7d73fabfaf799b2f4e30d98ec 08-May-2013 John McCall <rjmccall@apple.com> In block enum-return inference, don't die on loads of enum lvalues.

More of rdar://13200889.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181390 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
5543169296beeb183b9c9392debc774fcf493eeb 05-May-2013 Dmitri Gribenko <gribozavr@gmail.com> Replace ArrayRef<T>() with None, now that we have an implicit ArrayRef constructor from None

Patch by Robert Wilhelm.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181139 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
aeeacf725c9e0ddd64ea9764bd008e5b6873ce51 03-May-2013 John McCall <rjmccall@apple.com> Move parsing of identifiers in MS-style inline assembly into
the actual parser and support arbitrary id-expressions.

We're actually basically set up to do arbitrary expressions here
if we wanted to.

Assembly operands permit things like A::x to be written regardless
of language mode, which forces us to embellish the evaluation
context logic somewhat. The logic here under template instantiation
is incorrect; we need to preserve the fact that an expression was
unevaluated. Of course, template instantiation in general is fishy
here because we have no way of delaying semantic analysis in the
MC parser. It's all just fishy.

I've also fixed the serialization of MS asm statements.

This commit depends on an LLVM commit.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@180976 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
6afcf8875d4e447645cd7bf3733dd8e2eb8455dc 16-Apr-2013 Tareq A. Siraj <tareq.a.sriaj@intel.com> Sema for Captured Statements

Add CapturedDecl to be the DeclContext for CapturedStmt, and perform semantic
analysis. Currently captures all variables by reference.

TODO: templates

Author: Ben Langmuir <ben.langmuir@intel.com>

Differential Revision: http://llvm-reviews.chandlerc.com/D433


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179618 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
d2615cc53b916e8aae45783ca7113b93de515ce3 03-Apr-2013 Rafael Espindola <rafael.espindola@gmail.com> Add 178663 back.

http://lab.llvm.org:8011/builders/clang-x86_64-darwin10-gdb went back green
before it processed the reverted 178663, so it could not have been the culprit.

Revert "Revert 178663."

This reverts commit 4f8a3eb2ce5d4ba422483439e20c8cbb4d953a41.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178682 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
4f8a3eb2ce5d4ba422483439e20c8cbb4d953a41 03-Apr-2013 Rafael Espindola <rafael.espindola@gmail.com> Revert 178663.

Looks like it broke http://lab.llvm.org:8011/builders/clang-x86_64-darwin10-gdb

Revert "Don't compute a patched/semantic storage class."

This reverts commit 8f187f62cb0487d31bc4afdfcd47e11fe9a51d05.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178681 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
8f187f62cb0487d31bc4afdfcd47e11fe9a51d05 03-Apr-2013 Rafael Espindola <rafael.espindola@gmail.com> Don't compute a patched/semantic storage class.

For variables and functions clang used to store two storage classes. The one
"as written" in the code and a patched one, which, for example, propagates
static to the following decls.

This apparently is from the days clang lacked linkage computation. It is now
redundant and this patch removes it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178663 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
41d016454b48f25c93d4b3fb84cfc7e426a9bd73 09-Mar-2013 John McCall <rjmccall@apple.com> Adjust the special non-C++ enum block return type inference
so that it looks through certain syntactic forms and applies
even if normal inference would have succeeded.

There is potential for source incompatibility from this
change, but overall we feel that it produces a much
cleaner and more defensible result, and the block
compatibility rules should curb a lot of the potential
for annoyance.

rdar://13200889

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176743 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
bea522ff43a3f11c7a2bc7949119dbb9fce19e39 08-Mar-2013 Jordan Rose <jordan_rose@apple.com> ArrayRef-ize ASTContext::getFunctionType and Sema::BuildFunctionType.

No (intended) functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176726 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
cfa88f893915ceb8ae4ce2f17c46c24a4d67502f 12-Jan-2013 Dmitri Gribenko <gribozavr@gmail.com> Remove useless 'llvm::' qualifier from names like StringRef and others that are
brought into 'clang' namespace by clang/Basic/LLVM.h


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172323 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
ad017fa7a4df7389d245d02a49b3c79ed70bedb9 20-Dec-2012 Bill Wendling <isanbard@gmail.com> Revert r170500. It over-zealously converted *ALL* things named Attributes, which is wrong here.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170721 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
094dbf917127a1228147587076d59ca45b7c258d 19-Dec-2012 Bill Wendling <isanbard@gmail.com> Rename the 'Attributes' class to 'Attribute'. It's going to represent a single attribute in the future.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170500 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
3bc93e3124ad5e7191c4a12dc981c8ee53578193 19-Dec-2012 David Blaikie <dblaikie@gmail.com> Change DeclContextLookup(Const)Result to (Mutable)ArrayRef<NamedDecl*>, as per review discussion in r170365

This does limit these typedefs to being sequences, but no current usage
requires them to be contiguous (we could expand this to a more general
iterator pair range concept at some point).

Also, it'd be nice if SmallVector were constructible directly from an ArrayRef
but this is a bit tricky since ArrayRef depends on SmallVectorBaseImpl for the
inverse conversion. (& generalizing over all range-like things, while nice,
would require some nontrivial SFINAE I haven't thought about yet)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170482 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
55fc873017f10f6f566b182b70f6fc22aefa3464 04-Dec-2012 Chandler Carruth <chandlerc@gmail.com> Sort all of Clang's files under 'lib', and fix up the broken headers
uncovered.

This required manually correcting all of the incorrect main-module
headers I could find, and running the new llvm/utils/sort_includes.py
script over the files.

I also manually added quite a few missing headers that were uncovered by
shuffling the order or moving headers up to be main-module-headers.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169237 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
7c3c6bca2662704fbe038137d8ef2e4112359586 20-Sep-2012 Eli Friedman <eli.friedman@gmail.com> Handle lambdas where the lambda-declarator is an explicit "(void)". PR13854.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164274 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
8da8a660128180a31479216111ff9b19b11c95b4 19-Sep-2012 Eli Friedman <eli.friedman@gmail.com> Add the TypeSourceInfo for the lambda call operator to the lambda's
definition info; it needs to be there because the mangler needs to
access it before we're finished defining the lambda class.
PR12808.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164186 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
9cd5b24315aea4bc58bac03cfb4874e076b013b8 18-Sep-2012 Eli Friedman <eli.friedman@gmail.com> Add an extra check for invalid decls in the lambda semantic analysis to avoid a crash. PR13860.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164168 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
3bc22262af7b09a459b400976cfce3d9318b8ea9 30-Aug-2012 Richard Smith <richard-llvm@metafoo.co.uk> PR13652: Don't assume the parameter array on a FunctionTypeLoc for a lambda will
be filled in; they won't if the lambda's declarator has an invalid type. Instead
take the parameters from the declarator directly.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162904 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
4ef832ffc1147ce2f9777f9fad650cb3139a1d00 10-Aug-2012 David Blaikie <dblaikie@gmail.com> Provide isConst/Volatile on CXXMethodDecl.

This also provides isConst/Volatile/Restrict on FunctionTypes to coalesce
the implementation with other callers (& update those other callers).

Patch contributed by Sam Panzer (panzer@google.com).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161647 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
612409ece080e814f79e06772c690d603f45fbd6 25-Jul-2012 Richard Smith <richard-llvm@metafoo.co.uk> PR12057: Allow variadic template pack expansions to cross lambda boundaries.
Rather than adding a ContainsUnexpandedParameterPack bit to essentially every
AST node, we tunnel the bit directly up to the surrounding lambda expression
when we reach a context where an unexpanded pack can not normally appear.
Thus any statement or declaration within a lambda can now potentially contain
an unexpanded parameter pack.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160705 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
adb1d4c18ee83249d4cffc99ef902f98e846092a 23-Jul-2012 Richard Smith <richard-llvm@metafoo.co.uk> PR12917: Remove incorrect assumption that lambda mangling information cannot
change once it's been assigned. It can change in two ways:
1) In a template instantiation, the context declaration should be the
instantiated declaration, not the declaration in the template.
2) If a lambda appears in the pattern of a variadic pack expansion, the
mangling number will depend on the pack length.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160614 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
3a2d0fb726aca3096b5c1ea9be734417060f34d7 04-Jul-2012 Benjamin Kramer <benny.kra@googlemail.com> Split out the "empty" case for compound statement into a separate ctor.

Move the ASTContext-dependent version out of line.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159717 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
7dd900ed308506f9cf1cb72c70db1652f94cab37 02-Jul-2012 Jordan Rose <jordan_rose@apple.com> In blocks, only pretend that enum constants have enum type if necessary.

In C, enum constants have the type of the enum's underlying integer type,
rather than the type of the enum. (This is not true in C++.) Thus, when a
block's return type is inferred from an enum constant, it is incompatible
with expressions that return the enum type.

In r158899, I told block returns to pretend that enum constants have enum
type, like in C++. Doug Gregor pointed out that this can break existing code.

Now, we don't check the types of return statements until the end of the block.
This lets us go back and add implicit casts in blocks with mixed enum
constants and enum-typed expressions.

<rdar://problem/11662489> (again)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159591 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
03f1eb031b84e93415b792c4b45d8da71c88e92d 15-Jun-2012 Douglas Gregor <dgregor@apple.com> Check the parameter lists and return type of both blocks and lambdas
for unexpanded parameter packs. Fixes the crash-on-invalid in
PR13117.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158525 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
581deb3da481053c4993c7600f97acf7768caac5 06-Jun-2012 David Blaikie <dblaikie@gmail.com> Revert Decl's iterators back to pointer value_type rather than reference value_type

In addition, I've made the pointer and reference typedef 'void' rather than T*
just so they can't get misused. I would've omitted them entirely but
std::distance likes them to be there even if it doesn't use them.

This rolls back r155808 and r155869.

Review by Doug Gregor incorporating feedback from Chandler Carruth.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158104 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
44f5b1d95a3e4edf12c9b395d9f47767e75037b6 04-Jun-2012 Aaron Ballman <aaron@aaronballman.com> Removing the lambda extension warning concerning single return statements, as it no longer applies.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157943 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
262bc18e32500558af7cb0afa205b34bd37bafed 30-Apr-2012 David Blaikie <dblaikie@gmail.com> Remove the ref/value inconsistency in filter_decl_iterator.

filter_decl_iterator had a weird mismatch where both op* and op-> returned T*
making it difficult to generalize this filtering behavior into a reusable
library of any kind.

This change errs on the side of value, making op-> return T* and op* return
T&.

(reviewed by Richard Smith)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155808 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
f54486acc1cadf2791c3916ece66fded1e57ba0b 04-Apr-2012 Douglas Gregor <dgregor@apple.com> Move the computation of the lambda mangling information (mangling
number + context) to the point where we initially start defining the
lambda, so that the linkage won't change when that information is made
available. Fixes the assertion in <rdar://problem/11182962>.

Plus, actually mangle the context of lambdas properly.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154029 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
4e4d08403ca5cfd4d558fa2936215d3a4e5a528d 11-Mar-2012 David Blaikie <dblaikie@gmail.com> Unify naming of LangOptions variable/get function across the Clang stack (Lex to AST).

The member variable is always "LangOpts" and the member function is always "getLangOpts".

Reviewed by Chris Lattner

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152536 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
23f0267e2d56c0407f12e62df3561ecf75d74e6e 01-Mar-2012 Eli Friedman <eli.friedman@gmail.com> Implement "optimization" for lambda-to-block conversion which inlines the generated block literal for lambdas which are immediately converted to block pointer type. This simplifies the AST, avoids an unnecessary copy of the lambda and makes it much easier to avoid copying the result onto the heap.

Note that this transformation has a substantial semantic effect outside of ARC: it gives the converted lambda lifetime semantics similar to a block literal. With ARC, the effect is much less obvious because the lifetime of blocks is already managed.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151797 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
ac1303eca6cbe3e623fb5ec6fe7ec184ef4b0dfa 22-Feb-2012 Douglas Gregor <dgregor@apple.com> Generate an AST for the conversion from a lambda closure type to a
block pointer that returns a block literal which captures (by copy)
the lambda closure itself. Some aspects of the block literal are left
unspecified, namely the capture variable (which doesn't actually
exist) and the body (which will be filled in by IRgen because it can't
be written as an AST).

Because we're switching to this model, this patch also eliminates
tracking the copy-initialization expression for the block capture of
the conversion function, since that information is now embedded in the
synthesized block literal. -1 side tables FTW.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151131 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
b09ab8c293833c3dbcbf78f0db5e01fec46966bf 21-Feb-2012 Douglas Gregor <dgregor@apple.com> Only pop the expression evaluation context corresponding to a lambda
expression after we've finished the function body of the corresponding
function call operator. Otherwise, ActOnFinishFunctionBody() will see
the (unfinished) evaluation context of the lambda expression
itself. Fixes PR12031.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151082 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
f4b7de1cef3007cc0479775638198287384d9af1 21-Feb-2012 Douglas Gregor <dgregor@apple.com> Improve our handling of lambda expressions that occur within default
arguments. There are two aspects to this:

- Make sure that when marking the declarations referenced in a
default argument, we don't try to mark local variables, both because
it's a waste of time and because the semantics are wrong: we're not
in a place where we could capture these variables again even if it
did make sense.
- When a lambda expression occurs in a default argument of a
function template, make sure that the corresponding closure type is
considered dependent, so that it will get properly instantiated. The
second bit is a bit of a hack; to fix it properly, we may have to
rearchitect our handling of default arguments, parsing them only
after creating the function definition. However, I'd like to
separate that work from the lambdas work.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151076 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
a7b07fd0e13d3bee1f33ad74c35e24681f85451e 21-Feb-2012 Craig Topper <craig.topper@gmail.com> Remove comma from end of enum to silence build warning.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151036 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
5878cbcfaa90b8515550db86033fd5a0efab971d 21-Feb-2012 Douglas Gregor <dgregor@apple.com> Implement non-internal linkage for lambda closure types that need a
stable mangling, since these lambdas can end up in multiple
translation units. Sema is responsible for deciding when this is the
case, because it's already responsible for choosing the mangling
number.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151029 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
552e29985a710f4ced62b39d70557501bd31ca9b 21-Feb-2012 Douglas Gregor <dgregor@apple.com> Implement name mangling for lambda expressions that occur within the
initializers of data members (both static and non-static).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151017 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
ccc1b5eebc6ca8a904c58c0468b9a71483b7c7cf 21-Feb-2012 Douglas Gregor <dgregor@apple.com> Implement name mangling for lambda expressions that occur within the
default arguments of function parameters. This simple-sounding task is
complicated greatly by two issues:

(1) Default arguments aren't actually a real context, so we need to
maintain extra state within lambda expressions to track when a
lambda was actually in a default argument.
(2) At the time that we parse a default argument, the FunctionDecl
doesn't exist yet, so lambda closure types end up in the enclosing
context. It's not clear that we ever want to change that, so instead
we introduce the notion of the "effective" context of a declaration
for the purposes of name mangling.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151011 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
fa07ab57eb565b4a00712adcefb29d96b445bfcd 20-Feb-2012 Douglas Gregor <dgregor@apple.com> Make sure that we set up the right declaration contexts when creating
and introducing the lambda closure type and its function call
operator. Previously, we assumed that the lambda closure type would
land directly in the current context, and not some parent context (as
occurs with linkage specifications). Thanks to Richard for the test case.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150987 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
9e8c92a9c9b949bbb0408fbbd9a58e34894b6efc 20-Feb-2012 Douglas Gregor <dgregor@apple.com> Basic support for name mangling of C++11 lambda expressions. Because
name mangling in the Itanium C++ ABI for lambda expressions is so
dependent on context, we encode the number used to encode each lambda
as part of the lambda closure type, and maintain this value within
Sema.

Note that there are a several pieces still missing:
- We still get the linkage of lambda expressions wrong
- We aren't properly numbering or mangling lambda expressions that
occur in default function arguments or in data member initializers.
- We aren't (de-)serializing the lambda numbering tables




git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150982 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
999713eea940f4e087cc3ac878689c5c5c7a7225 18-Feb-2012 Douglas Gregor <dgregor@apple.com> Rewrite variable capture within lambda expressions and blocks,
eliminating a bunch of redundant code and properly modeling how the
captures of outside blocks/lambdas affect the types seen by inner
captures.

This new scheme makes two passes over the capturing scope stack. The
first pass goes up the stack (from innermost to outermost), assessing
whether the capture looks feasible and stopping when it either hits
the scope where the variable is declared or when it finds an existing
capture. The second pass then walks down the stack (from outermost to
innermost), capturing the variable at each step and updating the
captured type and the type that an expression referring to that
captured variable would see. It also checks type-specific
restrictions, such as the inability to capture an array within a
block. Note that only the first odr-use of each
variable needs to do the full walk; subsequent uses will find the
capture immediately, so multiple walks need not occur.

The same routine that builds the captures can also compute the type of
the captures without signaling errors and without actually performing
the capture. This functionality is used to determine the type of
declaration references as well as implementing the weird decltype((x))
rule within lambda expressions.

The capture code now explicitly takes sides in the debate over C++
core issue 1249, which concerns the type of captures within nested
lambdas. We opt to use the more permissive, more useful definition
implemented by GCC rather than the one implemented by EDG.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150875 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
27dd7d962bbf774988bc5e59d04a7743ed503514 17-Feb-2012 Douglas Gregor <dgregor@apple.com> Rework the Sema/AST/IRgen dance for the lambda closure type's
conversion to function pointer. Rather than having IRgen synthesize
the body of this function, we instead introduce a static member
function "__invoke" with the same signature as the lambda's
operator() in the AST. Sema then generates a body for the conversion
to function pointer which simply returns the address of __invoke. This
approach makes it easier to evaluate a call to the conversion function
as a constant, makes the linkage of the __invoke function follow the
normal rules for member functions, and may make life easier down the
road if we ever want to constexpr'ify some of lambdas.

Note that IR generation is responsible for filling in the body of
__invoke (Sema just adds a dummy body), because the body can't
generally be expressed in C++.

Eli, please review!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150783 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
c2956e5681113bbcec5ff98833345166942a211b 15-Feb-2012 Douglas Gregor <dgregor@apple.com> Lambda closure types have a conversion function to a block pointer
with the same parameter types and return type as the function call
operator. This is the real answer to

http://stackoverflow.com/questions/4148242/is-it-possible-to-convert-a-c0x-lambda-to-a-clang-block

:)


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150620 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
c25d1c9821e576ae6e3d11f621ff0901aa4e7c69 15-Feb-2012 Douglas Gregor <dgregor@apple.com> Factor the construction of the lambda-to-function-pointer conversion function declaration into a separate function. No functionality change

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150617 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
c6889e7ed16604c51994e1f11becf213fdc64eb3 14-Feb-2012 Douglas Gregor <dgregor@apple.com> Implement C++ core issue 974, which permits default arguments for
lambda expressions. Because these issue was pulled back from Ready
status at the Kona meeting, we still emit an ExtWarn when using
default arguments for lambda expressions.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150519 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
53393f23d8b767f976427a6d45b310bf37dd91c4 14-Feb-2012 Douglas Gregor <dgregor@apple.com> Check the return type of lambda expressions.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150503 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
a73652465bcc4c0f6cb7d933ad84e002b527a643 14-Feb-2012 Douglas Gregor <dgregor@apple.com> Implement support for lambda capture pack expansions, e.g.,

[&values...] { print(values...); }




git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150497 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
d5387e86ce3dfe1ae09e050ee11d86ca0d066d04 14-Feb-2012 Douglas Gregor <dgregor@apple.com> Link together the call operator produced from transforming a lambda
expression with the original call operator, so that we don't try to
separately instantiate the call operator. Test and tweak a few more
bits for template instantiation of lambda expressions.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150440 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
dfca6f53ab97d28d43e3fa2564209df08f3d282c 13-Feb-2012 Douglas Gregor <dgregor@apple.com> Introduce support for template instantiation of lambda
expressions. This is mostly a simple refact, splitting the main "start
a lambda expression" function into smaller chunks that are driven
either from the parser (Sema::ActOnLambdaExpr) or during AST
transformation (TreeTransform::TransformLambdaExpr). A few minor
interesting points:

- Added new entry points for TreeTransform, so that we can
explicitly establish the link between the lambda closure type in the
template and the lambda closure type in the instantiation.
- Added a bit into LambdaExpr specifying whether it had an explicit
result type or not. We should have had this anyway.

This code is 'lightly' tested.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150417 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
9daa7bfdff7256cef693d7bf10084881bcb9253c 13-Feb-2012 Douglas Gregor <dgregor@apple.com> Keep track of the set of array index variables we use when we
synthesize a by-copy captured array in a lambda. This information will
be needed by IR generation.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150396 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
da8962a6198bc4bf09a38209db99551b2b0a41a0 13-Feb-2012 Douglas Gregor <dgregor@apple.com> Move the storage of lambda captures and capture initializers from
LambdaExpr over to the CXXRecordDecl. This allows us to eliminate the
back-link from the closure type to the LambdaExpr, which will simplify
and lazify AST deserialization.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150393 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
215e4e17d00e12c38687a95502506d8f2ca3e646 12-Feb-2012 Douglas Gregor <dgregor@apple.com> Lambdas have a deleted default constructor and a deleted copy
assignment operator, per C++ [expr.prim.lambda]p19. Make it so.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150345 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
3ac109cd17151bb8ad3a40b0cbb0e1923cd6c4a0 10-Feb-2012 Douglas Gregor <dgregor@apple.com> Allow implicit capture of 'this' in a lambda even when the capture
default is '=', and reword the warning about explicitly capturing
'this' in such lambdas to indicate that only explicit capture is
banned.

Introduce Fix-Its for this and other "save the programmer from
themself" rules regarding what can be explicitly captured and what
must be implicitly captured.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150256 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
b555971345750350c21d541afe135054c7402933 10-Feb-2012 Douglas Gregor <dgregor@apple.com> Don't introduce a lambda's operator() into the class until after we
have finished parsing the body, so that name lookup will never find
anything within the closure type. Then, add this operator() and the
conversion function (if available) before completing the class.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150252 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
eefb3d5b49c844347f212073a7e975b8118fe8e9 10-Feb-2012 Richard Smith <richard-llvm@metafoo.co.uk> Track whether a function type has a trailing return type as type sugar. Use this
to pretty-print such function types better, and to fix a case where we were not
instantiating templates in lexical order. In passing, move the Variadic bit from
Type's bitfields to FunctionProtoType to get the Type bitfields down to 32 bits.
Also ensure that we always substitute the return type of a function when
substituting explicitly-specified arguments, since that can cause us to bail
out with a SFINAE error before we hit a hard error in parameter substitution.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150241 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
ef7d78bd5be466c369b04af742ed8268244d4fe7 10-Feb-2012 Douglas Gregor <dgregor@apple.com> Implement the conversion to a function pointer for lambda expressions,
per C++ [expr.prim.lambda]p6.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150236 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
4d8d22bfaed6e5d7da6b5556415b18c43b44e36c 10-Feb-2012 Douglas Gregor <dgregor@apple.com> Extend CXXRecordDecl with a function that determines the mapping from
the variables captured by a lambda to the fields that store the
captured values. To be used in IRgen.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150235 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
54042f1bd78f1f1ea86be7d4af541462e127d2ed 09-Feb-2012 Douglas Gregor <dgregor@apple.com> Implement return type deduction for lambdas per C++11
[expr.prim.lambda]p4, including the current suggested resolution of
core isue 975, which allows multiple return statements so long as the
types match. ExtWarn when user code is actually making use of this
extension.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150168 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
760b37bcae12f4bbc68bb6cabf6ed68d265b0826 09-Feb-2012 Douglas Gregor <dgregor@apple.com> Restore the appropriate lexical declaration context for a lambda's
function call operator (to the lambda class). This allows us to IRgen
calls to simple (non-capturing) lambdas, e.g.,

[](int i, int j) -> int { return i + j; }(1, 2)

Eli will be providing test cases as he brings up more IRgen.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150166 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
b326ca8ffbea96f9cc8a457b0f57be880304a6f5 09-Feb-2012 Douglas Gregor <dgregor@apple.com> Remove the "unsupported" error for lambda expressions. It's annoying,
and rapidly becoming untrue.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150165 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
e2c5913c48f66bfec9e58a8ad1d90e5eeffad586 09-Feb-2012 Douglas Gregor <dgregor@apple.com> Implement C++ [expr.prim.lambda]p2, which bans lambda expressions in
unevaluated operands. Be certain that we're marking everything
referenced within a capture initializer as odr-used.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150163 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
5e058eb02875530f1aed10c3417a1011744239b1 09-Feb-2012 Douglas Gregor <dgregor@apple.com> Don't complain about the lack of a constructor for a lambda expression. They are constructed in different ways

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150136 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
630d5fffdf342128bd73f817013ee91e030daac1 09-Feb-2012 Douglas Gregor <dgregor@apple.com> Along the error path for lambdas, mark the lambda class as invalid and finalize it

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150130 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
503384f731b5abcbf870b0a5224eb920e631db0a 09-Feb-2012 Douglas Gregor <dgregor@apple.com> Various interrelated cleanups for lambdas:
- Complete the lambda class when we finish the lambda expression
(previously, it was left in the "being completed" state)
- Actually return the LambdaExpr object and bind to the resulting
temporary when needed.
- Detect when cleanups are needed while capturing a variable into a
lambda (e.g., due to default arguments in the copy constructor), and
make sure those cleanups apply for the whole of the lambda
expression.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150123 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp
e2a7ad001fe1dc4a0d5fef312e7f7189e1f29369 08-Feb-2012 Douglas Gregor <dgregor@apple.com> Factor C++11 lambda expressions implementation into a separate
file. No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150089 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/lib/Sema/SemaLambda.cpp