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2012-01-04Add an APValue representation for the difference between two ↵Eli Friedman
address-of-label expressions. Add support to Evaluate and CGExprConstant for generating/handling them. Remove the special-case for such differences in Expr::isConstantInitializer. With that done, remove a bunch of buggy code from CGExprConstant for handling scalar expressions which is no longer necessary. Fixes PR11705. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147561 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-04implement rdar://10639962 by keeping track of increased alignment Chris Lattner
information even in subscripting operations. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147557 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-04Restore r147493 and remove the part of the test that was checking the wrong ↵David Chisnall
thing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147530 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-04Have functions return structures smaller than 128-bit in registers if ABIAkira Hatanaka
is either N32 or N64. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147520 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-04Revert r147493. It broke test/CodeGenObjC/constant-strings.m.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147511 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-03Initialise constant Objective-C string isa pointers with a weak reference to ↵David Chisnall
the class, so that they are usable in +load methods if the string class has been compiled with clang - if it's been compiled with GCC, the ABI makes this impossible. (GNU runtimes) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147493 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-01Eliminate ObjCForwardProtocolDecl, which is redundant now thatDouglas Gregor
ObjCProtocolDecl modules forward declarations properly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147415 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-01Introduce the core infrastructure needed to model redeclaration chainsDouglas Gregor
for Objective-C protocols, including: - Using the first declaration as the canonical declaration - Using the definition as the primary DeclContext - Making sure that all declarations have a pointer to the definition data, and that we know which declaration is the definition - Serialization support for redeclaration chains and for adding definitions to already-serialized declarations. However, note that we're not taking advantage of much of this code yet, because we're still re-using ObjCProtocolDecls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147410 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-30Unrevert r147271, reverted in r147361.Richard Smith
Also temporarily remove the assumption from IR gen that we can emit IR for every constant we can fold, since it isn't currently true in C++11, to fix PR11676. Original comment from r147271: constexpr: perform zero-initialization prior to / instead of performing a constructor call when appropriate. Thanks to Eli for spotting this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147384 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-28Small refactoring and simplification of constant evaluation and some of itsRichard Smith
clients. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147318 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-27Eliminate ObjCClassDecl, which is redundant now that ObjCInterfaceDeclDouglas Gregor
covers both declarations (@class) and definitions (@interface) of an Objective-C class. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147299 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-27constexpr: support for evaluation and codegen of typeid constants.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147290 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-25Add intrinsics for lzcnt and tzcnt instructions.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147263 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22Fix a failure (which led to a crash) in constant emission code with vector ↵Eli Friedman
compound literals. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147111 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-20Unweaken vtables as per ↵David Blaikie
http://llvm.org/docs/CodingStandards.html#ll_virtual_anch git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146959 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-19Mark the calls to the _setjmp function as returns twice. ↵Bill Wendling
<rdar://problem/10492556> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146926 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-19Switch a few callers of MakeAddrLValue places over to ↵Eli Friedman
MakeNaturalAlignAddrLValue. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146920 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-19Fix PR5279 - don't sliently drop alignment information on stores of types ↵Chris Lattner
that have alignment less than the natural alignment of the type when it comes from a typedef. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146908 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-19Extend the fix for PR9614 to handle inline asm in the outer decl andRafael Espindola
the inner decl being a builtin. This is needed to support the glibc headers in fedora 16 (2.14). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146867 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-19More AVX2 intrinsic support including saturating add/sub and palignr.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146857 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-16When in a limited debug information situation if we can find the originalEric Christopher
declaration for the type then go ahead and use that, it's still smaller than creating an all new derived type. Part of rdar://10335756 and others. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146779 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-16Start down the path of getting clang to internally agree on structs versusEric Christopher
classes. Part of rdar://10520586 and a couple others. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146778 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-15When generating debug info for an ObjCInterfaceDecl, try to dig out the ↵Douglas Gregor
definition. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146705 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-15Keep track of all declarations of an Objective-C class (both forwardDouglas Gregor
declarations and definitions) as ObjCInterfaceDecls within the same redeclaration chain. This new representation matches what we do for C/C++ variables/functions/classes/templates/etc., and makes it possible to answer the query "where are all of the declarations of this class?" git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146679 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-15Replace all comparisons between ObjCInterfaceDecl pointers with callsDouglas Gregor
to declaresSameEntity(), as a baby step toward tracking forward declarations of Objective-C classes precisely. Part of <rdar://problem/10583531>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146618 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-14Per discussion on the list, remove BitcodeVerify pass to reimplement as a ↵Chad Rosier
free function. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146530 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12Make CGRecordLayoutBuilder correctly switch over to a packed class when a ↵Eli Friedman
class has a base whose alignment will break the class layout. <rdar://problem/10551376>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146443 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12Add frontend flags to enable bitcode verifier pass.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146441 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12Hexagon backend supportTony Linthicum
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146413 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12Update Clang to emit the new form of llvm.cttz and llvm.ctlz intrinsics,Chandler Carruth
setting the is_zero_undef flag appropriately to true as that matches the semantics of these GCC builtins. This is the Clang side of r146357 in LLVM. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146358 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-11Reuse forAddr to create ignored AggValueSlots.Benjamin Kramer
Silences valgrind warnings about uninitalized alignment values. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146342 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-09Make array new on a pointer to data member type work correctly. PR11523.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146291 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-08Don't get the exception obj from the slot more than once.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146202 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-08Fix an edge case in IRGen for conditionals. PR11509.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146189 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-07Make sure we correctly zero-initialize unions containing a pointer to data ↵Eli Friedman
member as the first field. PR11487. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146009 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-06Stack realignment is a tristate. Add -mno-stackrealign to turn off all stackNick Lewycky
realignment, even with locals with alignment exceeding the ABI guarantee. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145909 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-06Minor comment update.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145905 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-05Add -mstack-alignment=X and fix -mstackrealign handling now that theJoerg Sonnenberger
backend options are gone. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145868 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-05Make EmitAggregateCopy take an alignment argument. Make EmitFinalDestCopy ↵Eli Friedman
pass in the correct alignment when known. The test includes a FIXME for a related case involving calls; it's a bit more complicated to fix because the RValue class doesn't keep track of alignment. <rdar://problem/10463337> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145862 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-03Switch LValue so that it exposes alignment in CharUnits. (No functional ↵Eli Friedman
change.) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145753 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-03Add a utility to get a RValue for a given LValue for an aggregate; switch a ↵Eli Friedman
few places over to it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145747 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-03Switch the Alignment argument on AggValueSlot over to CharUnits, per John's ↵Eli Friedman
review comment. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145741 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-03Track alignment in AggValueSlot. No functional change in this patch, but ↵Eli Friedman
I'll be introducing uses of the specified alignment soon. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145736 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-02Introduce a module import declaration, so that we properly represent, e.g.,Douglas Gregor
__import_module__ std.vector; in the AST. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145725 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-02Update for change to LLVM TargetMachine API in r145714.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145715 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-02Fix wrong-code bug when a const automatic variable of struct type has both aRichard Smith
mutable member and a constant initializer. We'd previously promoted such variables to global constants, resulting in nasal demons if the mutable member was modified. This is only a temporary fix. The subtle interplay between isConstantInitializer and CGExprConstant is very bug-prone; there are some other issues in this area which I will be addressing in subsequent, more major reworking of this code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145654 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-02When we're passing a vector with an illegal type through memory on x86-64, ↵Eli Friedman
use byval so we're sure the backend does the right thing. Fixes va_arg with illegal vectors and an obscure ABI mismatch with __m64 vectors. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145652 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-01Fix -forwardingTargetForSelector: (GNUstep runtime) which was broken for theDavid Chisnall
old dispatch mechanism when I introduced the new one. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145609 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-01Don't use a varargs convention for calls unprototyped functions where one of ↵Eli Friedman
the arguments is an AVX vector. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145574 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-30Promote ModuleMap::Module to a namespace-scope class in the BasicDouglas Gregor
library, since modules cut across all of the libraries. Rename serialization::Module to serialization::ModuleFile to side-step the annoying naming conflict. Prune a bunch of ModuleMap.h includes that are no longer needed (most files only needed the Module type). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145538 91177308-0d34-0410-b5e6-96231b3b80d8
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