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194 Commits

Author SHA1 Message Date
Alexey Samsonov 9b502e512c Initialize debug info for special cases of functions that lack declarations and are generated by Clang (global initializers/destructors, thunks) . Fixes PR13942. 
llvm-svn: 166676
 2012-10-25 10:18:50 +00:00
Douglas Gregor 47c089624f Remove the HiddenWeakTemplateVTables CodeGen option. It's currently unused. 
llvm-svn: 166561
 2012-10-24 14:11:55 +00:00
David Blaikie eb7d598cec PR13684: Emit vtable entries for deleted functions as __cxa_deleted_function. 
This is consistent/interoperable with GCC 4.7 (& __cxa_deleted_function isn't
present in 4.4 - not sure when it got added, but you'll need something with
that function available for this to work).

llvm-svn: 166069
 2012-10-16 22:56:05 +00:00
Rafael Espindola 86792438dc Call CGM.SetLLVMFunctionAttributesForDefinition on thunks so that they get 
attributes like uwtable. Without uwtable a stack unwinder would be unable
to go past the thunks.

llvm-svn: 164411
 2012-09-21 20:39:32 +00:00
Benjamin Kramer 6ca4210d3a Update clang for API change. 
llvm-svn: 164218
 2012-09-19 13:13:52 +00:00
Eli Friedman 00755e9554 Fix thunk emission for covariant virtual functions in cases which require 
both a virtual and a non-virtual offset. PR13832.

llvm-svn: 163866
 2012-09-14 01:45:09 +00:00
Eli Friedman 48a3291675 Fix line endings. 
llvm-svn: 163865
 2012-09-14 01:19:01 +00:00
John McCall ff755cda9c Don't crash *or* insert a bogus autorelease when emitting a 
this-adjustment thunk in ARC++.

llvm-svn: 161014
 2012-07-31 00:33:55 +00:00
Joao Matos 718a883c5f Fixed whitespace issue introduced in r160373. 
llvm-svn: 160388
 2012-07-17 19:17:58 +00:00
Joao Matos 2ce88ef9a7 [Windows] Abstract pure virtual method calls in the ABI. Fix the Windows ABI to forward to the correct function. 
llvm-svn: 160373
 2012-07-17 17:10:11 +00:00
John McCall 8dda7b27ee Distinguish more carefully between free functions and C++ instance methods 
in the ABI arrangement, and leave a hook behind so that we can easily
tweak CCs on platforms that use different CCs by default for C++
instance methods.

llvm-svn: 159894
 2012-07-07 06:41:13 +00:00
Benjamin Kramer e6b4a16ddd Fix a use-after-free in thunk emission. EmitThunk may call RAUW on Init, invalidating the pointer. 
Fixes PR12284. The test case only triggered under asan/valgrind, but it's better than nothing.

llvm-svn: 153120
 2012-03-20 20:18:13 +00:00
David Blaikie bbafb8a745 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

llvm-svn: 152536
 2012-03-11 07:00:24 +00:00
John McCall a729c62b81 Whether an argument is required (in contrast with being an 
optional argument passed through the variadic ellipsis)
potentially affects how we need to lower it.  Propagate
this information down to the various getFunctionInfo(...)
overloads on CodeGenTypes.  Furthermore, rename those
overloads to clarify their distinct purposes, and make
sure we're calling the right one in the right place.
This has a nice side-effect of making it easier to construct
a function type, since the 'variadic' bit is no longer
separable.

This shouldn't really change anything for our existing
platforms, with one minor exception --- we should now call
variadic ObjC methods with the ... in the "right place"
(see the test case), which I guess matters for anyone
running GNUStep on MIPS.  Mostly it's just a substantial
clean-up.

llvm-svn: 150788
 2012-02-17 03:33:10 +00:00
Eli Friedman 9fbeba0d8e Basic support for referring to captured variables from lambdas. Some simple examples seem to work. Tests coming up soon. 
llvm-svn: 150293
 2012-02-11 02:57:39 +00:00
Chris Lattner ece0409a1a simplify a bunch of code to use the well-known LLVM IR types computed by CodeGenModule. 
llvm-svn: 149943
 2012-02-07 00:39:47 +00:00
Dylan Noblesmith 2c1dd2716a Basic: import SmallString<> into clang namespace 
(I was going to fix the TODO about DenseMap too, but
that would break self-host right now. See PR11922.)

llvm-svn: 149799
 2012-02-05 02:13:05 +00:00
Dylan Noblesmith e27789991d Basic: import OwningPtr<> into clang namespace 
llvm-svn: 149798
 2012-02-05 02:12:40 +00:00
Peter Collingbourne cfd2356180 Move VTable builder to AST 
llvm-svn: 140510
 2011-09-26 01:57:12 +00:00
Peter Collingbourne 1c593c6a38 Have CodeGenVTables::GenerateConstructionVTable use VTableLayout 
llvm-svn: 140509
 2011-09-26 01:57:04 +00:00
Peter Collingbourne 085095f1ac Move vtable dumper call to VTableBuilder ctor 
llvm-svn: 140508
 2011-09-26 01:57:00 +00:00
Peter Collingbourne 3b118abd93 Implement VTableContext::createConstructionVTableLayout 
llvm-svn: 140507
 2011-09-26 01:56:55 +00:00
Peter Collingbourne affe111ba5 Move all vtable layout data into new VTableLayout class 
llvm-svn: 140506
 2011-09-26 01:56:50 +00:00
Peter Collingbourne cd3c3f4f3d Move VTableComponent to header file 
llvm-svn: 140505
 2011-09-26 01:56:45 +00:00
Peter Collingbourne 5ee9ee490e Move vtable component accessors to VTableContext 
llvm-svn: 140504
 2011-09-26 01:56:41 +00:00
Peter Collingbourne 71c26936a0 Remove CodeGenVTables::ComputeVTableRelatedInformation dependency on CodeGen 
llvm-svn: 140503
 2011-09-26 01:56:36 +00:00
Peter Collingbourne a834166e48 Create a VTableContext class and start moving CodeGenVTables methods to it 
llvm-svn: 140502
 2011-09-26 01:56:30 +00:00
David Blaikie aa347f9392 Removing a bunch of dead returns/breaks after llvm_unreachables. 
llvm-svn: 140407
 2011-09-23 20:26:49 +00:00
David Blaikie 83d382b1ca Switch assert(0/false) llvm_unreachable. 
llvm-svn: 140367
 2011-09-23 05:06:16 +00:00
Douglas Gregor e8bbc12152 Extend the ASTContext constructor to delay the initialization of 
builtin types (When requested). This is another step toward making
ASTUnit build the ASTContext as needed when loading an AST file,
rather than doing so after the fact. No actual functionality change (yet).

llvm-svn: 138985
 2011-09-02 00:18:52 +00:00
Eli Friedman f5dfb31df0 Revert bad change. (It may look equivalent, but it isn't.) 
llvm-svn: 137132
 2011-08-09 18:16:09 +00:00
Eli Friedman f481ccafd8 Cleanup; no functionality change. 
llvm-svn: 137126
 2011-08-09 17:38:12 +00:00
Chris Lattner 0e62c1cc0b remove unneeded llvm:: namespace qualifiers on some core types now that LLVM.h imports 
them into the clang namespace.

llvm-svn: 135852
 2011-07-23 10:55:15 +00:00
Chris Lattner 2192fe50da de-constify llvm::Type, patch by David Blaikie! 
llvm-svn: 135370
 2011-07-18 04:24:23 +00:00
Chris Lattner 8806e32f16 Rename CGT::VerifyFuncTypeComplete to isFuncTypeConvertible since 
it is a predicate, not an action.  Change the return type to be a bool,
not the incomplete member.  Enhace it to detect the recursive compilation
case, allowing us to compile Eli's testcase on llvmdev:

struct T {
 struct T (*p)(void);
} t;

into:

%struct.T = type { {}* }

@t = common global %struct.T zeroinitializer, align 8

llvm-svn: 134853
 2011-07-10 00:18:59 +00:00
Jay Foad 83be361b8a Replace the existing forms of ConstantArray::get() with a single form 
that takes an ArrayRef.

llvm-svn: 133615
 2011-06-22 09:24:39 +00:00
Anders Carlsson d6f1518cc9 Fix another regression from the "skip vtable pointer initialization" 
optimization. Make sure to require a vtable when trying to get the address
of a VTT, otherwise we would never end up emitting the VTT.

llvm-svn: 131400
 2011-05-16 04:08:36 +00:00
Eli Friedman 49a94b1c7c Add an implementation of thunks for varargs methods. The implementation is a bit messy, but it is correct as long as the method in question doesn't use indirect gotos. A couple of possible alternative implementations are outlined in FIXME's in this patch. rdar://problem/8077308 . 
llvm-svn: 130993
 2011-05-06 17:27:27 +00:00
Eli Friedman 43dca6a8d2 Simplify code a bit by using CallArgList::add. No intended functionality change. 
llvm-svn: 130699
 2011-05-02 17:57:46 +00:00
Anders Carlsson e5ec21c977 Change CollectPrimaryBases to collect the bases in the right order. Fixes one half of PR9660. 
llvm-svn: 129252
 2011-04-10 18:00:32 +00:00
Anders Carlsson 68aad14dd3 Make -fdump-vtable-layouts also dump vtable indices for all virtual member functions in the class. 
llvm-svn: 129250
 2011-04-10 17:42:45 +00:00
Ken Dyck bb4e977218 [Reapply r128776, modified so that it does not break debug info.] 
Change the return type of CodeGenVTables::getVirtualBaseOffsetOffset() to
CharUnits. No change in functionality intended.

llvm-svn: 129072
 2011-04-07 12:37:09 +00:00
Ken Dyck 3a09bc5ab0 [Reapply r128773. This is not the source of the issues Devang was seeing 
with debug info.]

Use CharUnits for the offsets in the VirtualBaseClassOffsetOffsetsMapTy. No
change in functionality intended.

llvm-svn: 129048
 2011-04-07 01:22:42 +00:00
Ken Dyck 25c82240e9 [Reapply r128771. It wasn't the source of the issues Devang saw with debug 
info.]

Use CharUnits for the offset type in the ClassNamesAndOffsets map in
dumpLayout(). No change in functionality intended.

llvm-svn: 129046
 2011-04-07 00:59:42 +00:00
Ken Dyck 42a9d29c2c Reapply r128770. It's not the cause of the issues Devang saw with debug info. 
Use CharUnits for the offsets in the VBaseOffsetOffsetsMapTy types. No
change in functionality intended.

llvm-svn: 129043
 2011-04-07 00:55:01 +00:00
Devang Patel 84852bbb42 Revert r128770, r128771, r128773 and r128776 for now. It breaks debug info. 
llvm-svn: 128842
 2011-04-04 20:36:06 +00:00
Ken Dyck 1473c9a7c4 Change the return type of CodeGenVTables::getVirtualBaseOffsetOffset() to 
CharUnits. No change in functionality intended.

llvm-svn: 128776
 2011-04-02 17:52:22 +00:00
Ken Dyck 1b23db93df Use CharUnits for the offsets in the VirtualBaseClassOffsetOffsetsMapTy. No 
change in functionality intended.

llvm-svn: 128773
 2011-04-02 17:13:02 +00:00
Ken Dyck cf4ef5314f Use CharUnits for the offset type in the ClassNamesAndOffsets map in 
dumpLayout(). No change in functionality intended.

llvm-svn: 128771
 2011-04-02 17:03:24 +00:00
Ken Dyck 1eac9f1546 Use CharUnits for the offsets in the VBaseOffsetOffsetsMapTy types. No 
change in functionality intended.

llvm-svn: 128770
 2011-04-02 16:57:20 +00:00
Ken Dyck 6b20919317 Convert BaseOffset::NonVirtualOffset to CharUnits. No change in 
functionality intended.

llvm-svn: 128756
 2011-04-02 01:32:03 +00:00
Ken Dyck 872d74a591 Convert offset parameters and return values of VTableComponent methods to 
CharUnits. No change in functionality intended.

llvm-svn: 128754
 2011-04-02 01:14:48 +00:00
Ken Dyck 496906629b Convert the offsets in VCallOffsetMap to CharUnits. No change in 
functionality intended.

llvm-svn: 128753
 2011-04-02 00:51:15 +00:00
Ken Dyck eff7fe645b Convert offset parameters of VTableBuilder::IsOverriderUsed() to CharUnits. 
No change in functionality intended.

llvm-svn: 128752
 2011-04-02 00:44:58 +00:00
Ken Dyck 4680e9219a Convert the return value of 
VCallAndVBaseOffsetBuilder::getCurrentOffsetOffset() to CharUnits. No change
in functionality intended.

llvm-svn: 128603
 2011-03-31 01:08:46 +00:00
Ken Dyck 47e1e54343 Convert the OffsetInLayoutClass parameter of 
VCallAndVBaseOffsetBuilder::AddVBaseOffsets() to CharUnits. No change in
functionality intended.

llvm-svn: 128600
 2011-03-31 00:56:47 +00:00
Ken Dyck 1a93b3b080 Convert the OffsetInLayoutClass of the VCallAndVBaseOffsetBuilder 
constructor to CharUnits. No change in functionality intended.

llvm-svn: 128598
 2011-03-31 00:48:04 +00:00
Ken Dyck 9b32ee1611 Convert the RealBaseOffset parameter of 
VCallAndVBaseOffsetBuilder::AddVCallAndVBaseOffsets() to
CharUnits. No change in functionality intended.

llvm-svn: 128596
 2011-03-31 00:37:24 +00:00
Jay Foad 20c0f02cc5 Remove PHINode::reserveOperandSpace(). Instead, add a parameter to 
PHINode::Create() giving the (known or expected) number of operands.

llvm-svn: 128538
 2011-03-30 11:28:58 +00:00
Ken Dyck b3ba775523 Convert the offset parameter of 
VCallAndVBaseOffsetBuilder::AddVCallOffsets() to CharUnits. No change in
functionality intended.

llvm-svn: 128531
 2011-03-30 10:11:40 +00:00
Ken Dyck 075de167f8 Convert local offset variable to CharUnits in AddVCallOffsets. No change in 
functionality intended.

llvm-svn: 128522
 2011-03-30 01:21:33 +00:00
Ken Dyck 078f3e6905 Convert a local offset variable to CharUnits. No change in functionality 
intended.

llvm-svn: 128521
 2011-03-30 01:14:22 +00:00
Ken Dyck 032a903982 Convert the OffsetInLayoutClass parameter of DeterminePrimaryVirtualBases() 
to CharUnits. No change in functionality intended.

llvm-svn: 128520
 2011-03-30 01:10:23 +00:00
Ken Dyck 45956a467e Convert the OffsetInLayoutClass parameter of LayoutSecondaryVTables to 
CharUnits. No change in functionality intended.

llvm-svn: 128516
 2011-03-30 00:50:28 +00:00
Ken Dyck f9742cca31 Convert offset parameter in LayoutPrimaryAndSecondaryVTables() to CharUnits. 
No change in functionality intended.

llvm-svn: 128393
 2011-03-27 20:33:38 +00:00
Ken Dyck 9a7e532dd8 Convert VTableBuilder::MostDerivedClassOffset to CharUnits. No change in 
functionality intended.

llvm-svn: 128392
 2011-03-27 20:20:28 +00:00
Ken Dyck 0d5804a622 Convert FinalOverriders::MostDerivedClassOffset to CharUnits. No change in 
functionality intended.

llvm-svn: 128391
 2011-03-27 20:10:29 +00:00
Ken Dyck 5f3601d35a Remove a fixed FIXME comment (the base offset has already been converted to 
CharUnits).

llvm-svn: 128386
 2011-03-27 19:19:52 +00:00
Ken Dyck f4be03ae04 Convert the offset parameters of AddMethods() to CharUnits. No change in 
functionality intended.

llvm-svn: 128385
 2011-03-27 19:15:11 +00:00
Ken Dyck f736d9cb75 Convert the BaseOffsetInLayoutClass parameter of ComputeThisAdjustment() to 
CharUnits. No change in functionality intended.

llvm-svn: 128384
 2011-03-27 19:03:44 +00:00
Ken Dyck 7d876f3649 Convert offset members in MethodInfo to CharUnits. No change in 
functionality intended.

llvm-svn: 128383
 2011-03-27 18:57:53 +00:00
John McCall 358d056c14 We were emitting construction v-tables with internal linkage all the time. 
Emit them instead with the linkage of the VTT.

I'm actually really ambivalent about this;  it's what GCC does, but outside
of improving code size (if the linkage is coalescing), I'm not sure it's
at all relevant.  Construction vtables are naturally referenced only by the
VTT, which is itself only referenced by complete-object constructors and
destructors;  giving the construction vtables possibly-external linkage is
important if you have an optimization that drills through the VTT to a
reference to a particular construction vtable which it cannot just emit
itself.

llvm-svn: 128374
 2011-03-27 09:00:25 +00:00
Douglas Gregor 1baf38f5a6 On Mac OS X, the presence of an 'availability' attribute for that 
platform implies default visibility. To achieve these, refactor our
lookup of explicit visibility so that we search for both an explicit
VisibilityAttr and an appropriate AvailabilityAttr, favoring the
VisibilityAttr if it is present.

llvm-svn: 128336
 2011-03-26 12:10:19 +00:00
Ken Dyck 58863dc46a Convert the OffsetInLayoutClass parameter of 
FinalOverriders::ComputeBaseOffsets() to CharUnits. No change in
functionality intended.

llvm-svn: 128323
 2011-03-26 01:36:26 +00:00
Ken Dyck 785cbdb6da Convert FinalOverriders::Offset to CharUnits. No change in functionality 
intended.

llvm-svn: 128321
 2011-03-26 01:29:16 +00:00
Ken Dyck 808457cfd6 Convert offset in MethodBaseOffsetPairTy to CharUnits. No change in 
functionality intended.

llvm-svn: 128318
 2011-03-26 01:18:17 +00:00
Ken Dyck 70b47e08dc Convert the offsets in SubobjectOffsetMapTy to CharUnits. No change in 
functionality intended.

llvm-svn: 128317
 2011-03-26 01:09:13 +00:00
Ken Dyck ce81203d9b Convert several local variables to CharUnits. No change in functionality 
intended.

llvm-svn: 128315
 2011-03-26 00:51:24 +00:00
Ken Dyck 16ffcac1a2 Convert the BaseOffset member of BaseSubobject to CharUnits from bits. No 
change in functionality intended.

llvm-svn: 128190
 2011-03-24 01:21:01 +00:00
John McCall 32ea969415 Use a slightly more semantic interface for emitting call arguments. 
llvm-svn: 127494
 2011-03-11 20:59:21 +00:00
John McCall 5fe009660d Tame this assert, hopefully fixing self-host. 
llvm-svn: 127319
 2011-03-09 07:12:35 +00:00
John McCall a738c25f5e Use the "undergoes default argument promotion" bit on parameters to 
simplify the logic of initializing function parameters so that we don't need
both a variable declaration and a type in FunctionArgList.  This also means
that we need to propagate the CGFunctionInfo down in a lot of places rather
than recalculating it from the FAL.  There's more we can do to eliminate
redundancy here, and I've left FIXMEs behind to do it.

llvm-svn: 127314
 2011-03-09 04:27:21 +00:00
Tilmann Scheller 99cc30c371 Revert "Add CC_Win64ThisCall and set it in the necessary places." 
This reverts commit 126863.

llvm-svn: 126886
 2011-03-02 21:36:49 +00:00
Tilmann Scheller e60baf731b Revert "Add preliminary support for MSVC-style vtables." 
This reverts commit 126865.

llvm-svn: 126876
 2011-03-02 20:40:50 +00:00
Tilmann Scheller a6c995dbb2 Add preliminary support for MSVC-style vtables. 
llvm-svn: 126865
 2011-03-02 19:38:28 +00:00
Tilmann Scheller 454464b491 Add CC_Win64ThisCall and set it in the necessary places. 
llvm-svn: 126863
 2011-03-02 19:36:23 +00:00
Rafael Espindola 3968cd0f7b For consistency, use llvm::raw_ostream in the rest of the mangle api. 
llvm-svn: 125360
 2011-02-11 02:52:17 +00:00
John McCall ad7c5c1657 Reorganize CodeGen{Function,Module} to eliminate the unfortunate 
Block{Function,Module} base class.  Minor other refactorings.

Fixed a few address-space bugs while I was there.

llvm-svn: 125085
 2011-02-08 08:22:06 +00:00
Anders Carlsson e866d44417 Fix self-host; if a thunk already exists and has available_externally linkage, we should change its linkage instead of asserting. 
llvm-svn: 124986
 2011-02-06 20:09:44 +00:00
Anders Carlsson 8b02183ff3 When building with optimizations, emit thunks with available_externally linkage so devirtualized function calls can also be de-thunked. 
llvm-svn: 124984
 2011-02-06 18:31:40 +00:00
Anders Carlsson fe8a9939f9 Simplify thunks code. 
llvm-svn: 124983
 2011-02-06 17:15:43 +00:00
Anders Carlsson 73f97534b0 Pass a 'ForVTable' flag to GetAddrOfThunk and pass it along to GetOrCreateLLVMFunction so that we 
won't assert when building a thunk for an implicit virtual member function that is not marked used.

llvm-svn: 124967
 2011-02-05 18:48:55 +00:00
Anders Carlsson 3c23948481 Re-land r124768, with a fix for PR9130. 
We now emit everything except unused implicit virtual member functions when building the vtable.

llvm-svn: 124935
 2011-02-05 04:35:53 +00:00
Rafael Espindola af5b92e8f7 Revert 124768. 
This reopens PR99114, but that one at least can be avoided with an #include.
PR9130 cannot.

llvm-svn: 124780
 2011-02-03 06:30:58 +00:00
Anders Carlsson bac84bef65 Don't try to mark virtual members referenced for classes where the key function 
is not defined in the current translation unit. Doing so lead to compile errors
such as PR9114.

Instead, when CodeGen is building the vtable, don't try to emit a definition
for functions that aren't marked used in the current translation unit.
Fixes PR9114.

llvm-svn: 124768
 2011-02-03 02:08:44 +00:00
Anders Carlsson a03f3a85cb When building with optimizations, emit vtables where the key is not in the 
current translation unit as available_externally. 

This helps devirtualize the second example in PR3100, comment 18:

struct S { S() {}; virtual void xyzzy(); };
inline void foo(S *s) { s->xyzzy(); }
void bar() { S s; foo(&s); }

This involved four major changes:

1. In DefineUsedVTables, always mark virtual member functions as referenced for
   non-template classes and class template specializations.
2. In CodeGenVTables::ShouldEmitVTableInThisTU return true if optimizations are
   enabled, even if the key function is not implemented in this translation 
   unit. We don't ever do this for code compiled with -fapple-kext, because we
   don't ever want to devirtualize virtual member function calls in that case.
3. Give the correct linkage for vtables where the key function is not defined.
4. Update the linkage for RTTI structures when necessary.

llvm-svn: 124565
 2011-01-30 20:45:54 +00:00
Anders Carlsson 265aa7c070 Change CodeGenModule::setTypeVisibility to take a TypeVisibilityKind enum instead of an "IsForRTTI" flag. 
llvm-svn: 124546
 2011-01-29 20:24:48 +00:00
Anders Carlsson c6a47895f7 Get rid of an unneeded parameter from setGlobalVisibility. 
llvm-svn: 124541
 2011-01-29 19:39:23 +00:00
Anders Carlsson 883fc72c3c Make emitting a VTT a two-step process, much like emitting a VTable. You first get the address of the VTT, and then pass it to EmitVTTDefinition. 
llvm-svn: 124539
 2011-01-29 19:16:51 +00:00
Anders Carlsson 93be9a90cc Use CGM.CreateOrReplaceCXXRuntimeVariable in CGVTables.cpp 
llvm-svn: 124538
 2011-01-29 18:25:07 +00:00