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182 Commits

Author SHA1 Message Date
John McCall
7cb0220e53 If a function definition has any sort of weak linkage, its static local 
variables should have that linkage.  Otherwise, its static local
variables should have internal linkage.  To avoid computing this excessively,
set a function's linkage before we emit code for it.

Previously we were assigning weak linkage to the static variables of
static inline functions in C++, with predictably terrible results.  This
fixes that and also gives better linkage than 'weak' when merging is required.

llvm-svn: 104581
 2010-05-25 04:30:21 +00:00
Douglas Gregor
9154b5dffe Ensure that destructors are called for NRVO'd objects when the 
function does not return. Thanks to Eli for pointing out this corner
case.

llvm-svn: 103941
 2010-05-17 15:52:46 +00:00
Douglas Gregor
170125648c When applying the named return value optimization, we still need to 
destroy the variable along the exceptional edge; it's only during
normal execution that we avoid destroying this variable.

llvm-svn: 103872
 2010-05-15 16:39:56 +00:00
Douglas Gregor
290c93ec0d Implement a simple form of the C++ named return value optimization for 
return statements. We perform NRVO only when all of the return
statements in the function return the same variable. Fixes some link
failures in Boost.Interprocess (which is relying on NRVO), and
probably improves performance for some C++ applications.

llvm-svn: 103867
 2010-05-15 06:46:45 +00:00
John McCall
4a39ab8078 Emit the globals, metadata, etc. associated with static variables even when 
they're unreachable.  This matters because (if they're POD, or if this is C)
the scope containing the variable might be reachable even if the variable
isn't.  Fixes PR7044.

llvm-svn: 103052
 2010-05-04 20:45:42 +00:00
Fariborz Jahanian
751f7bc03c Fixes a Code Gen. Crash when calling destructor on a __block 
variabe. Blocks and their construction/destruction is
wip though. 

llvm-svn: 102985
 2010-05-04 00:26:07 +00:00
John McCall
5828ee7a27 Just bail out immediately when emitting an unreachable function-local static 
variable.  Surprisingly, this does seem to be the right way to solve this.

llvm-svn: 102961
 2010-05-03 21:39:56 +00:00
Anders Carlsson
f8a71f08d1 Add the same 'ForVirtualBase' parameter to EmitCXXDestructorCall. 
llvm-svn: 102882
 2010-05-02 23:29:11 +00:00
Douglas Gregor
19043f0a6a I hate default statements. Fixes PR6874. 
llvm-svn: 102160
 2010-04-23 02:02:43 +00:00
Fariborz Jahanian
4d55b2d049 Some renaming of methods, fixes typo 
(related to PR6769).

llvm-svn: 101794
 2010-04-19 18:15:02 +00:00
Fariborz Jahanian
3fef72f0ba Local static variables must be available module-wise 
as they are accessible in static methods in a class
local to the same function. Fixes PR6769.

llvm-svn: 101756
 2010-04-18 21:01:23 +00:00
Mon P Wang
cc2ab0cdc9 Reapply patch for adding support for address spaces and added a isVolatile field to memcpy, memmove, and memset. 
llvm-svn: 100305
 2010-04-04 03:10:52 +00:00
Mon P Wang
f7f3bff646 Revert r100193 since it causes failures in objc in clang 
llvm-svn: 100200
 2010-04-02 18:43:42 +00:00
Mon P Wang
4b82a88764 Reapply patch for adding support for address spaces and added a isVolatile field to memcpy, memmove, and memset. 
llvm-svn: 100193
 2010-04-02 18:04:30 +00:00
Bob Wilson
adb58e32cc Revert Mon Ping's 99930 due to broken llvm-gcc buildbots. 
llvm-svn: 99949
 2010-03-30 22:28:46 +00:00
Mon P Wang
231e99743a Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset 
llvm-svn: 99930
 2010-03-30 21:02:45 +00:00
John McCall
7ec5043c2c Change CodeGenModule to rely on the Module's symbol table instead of 
shadowing it in the GlobalDeclMap.  Eliminates the string-uniquing
requirement for mangled names, which should help C++ codegen times a little.
Forces us to do string lookups instead of pointer lookups, which might hurt
codegen times a little across the board.  We'll see how it plays out.

Removing the string-uniquing requirement implicitly fixes any bugs like
PR6635 which arose from the fact that we had multiple uniquing tables for
different kinds of identifiers.

llvm-svn: 99012
 2010-03-19 23:29:14 +00:00
Fariborz Jahanian
c6140734c5 Fix a rare corner case bug which exposed a serious block API generation 
when initialized variable is a byref block variable and is referenced recursively
in the initializer (you guessed it, it is block implementation of
fibonacci number). Fix, on the other hand is trvial, by generating the
API for byref variable before API for its initializer. We will have this
test added to our internal test suite as a clang-style test is not possible
due to very convoluted IR sequence. Fixes radar 7745514.

llvm-svn: 98393
 2010-03-12 21:40:43 +00:00
Chris Lattner
4d94109903 set alignment on static locals properly, patch by Arnaud de Grandmaison! 
llvm-svn: 98204
 2010-03-10 23:59:59 +00:00
Daniel Dunbar
a7566f163a IRgen: Add CreateMemTemp, for creating an temporary memory object for a particular type, and flood fill. - CreateMemTemp sets the alignment on the alloca correctly, which fixes a great many places in IRgen where we were doing the wrong thing. 
- This fixes many many more places than the test case, but my feeling is we need to audit alignment systematically so I'm not inclined to try hard to test the individual fixes in this patch. If this bothers you, patches welcome!

PR6240.

llvm-svn: 95648
 2010-02-09 02:48:28 +00:00
Daniel Dunbar
3d33fab7fc Reapply r95393, without the change to CGExpr. I was wrong in assuming that the 
element type always matched the converted LLVM type for ExprType.

llvm-svn: 95596
 2010-02-08 22:53:07 +00:00
Anders Carlsson
cee2d2f016 Use the right linkage for static variables inside C++ inline functions. 
llvm-svn: 95512
 2010-02-07 02:03:08 +00:00
Douglas Gregor
a643780483 Revert r95393, which broke Clang's self-host. 
llvm-svn: 95430
 2010-02-05 21:10:36 +00:00
Daniel Dunbar
363589bded IRgen: Use hasAggregateLLVMType instead of isSingleValueType() for cases that 
need to deal with aggregates specially; this is consistent with the rest of IRgen.

Also, simplify EmitParmDecl and don't worry about using Decl::getNameAsString.

llvm-svn: 95393
 2010-02-05 17:51:33 +00:00
Anders Carlsson
3b227bd629 Revert the new reference binding code; I came up with a way simpler solution for the reference binding bug that is preventing self-hosting. 
llvm-svn: 95223
 2010-02-03 16:38:03 +00:00
Anders Carlsson
ab0ddb57b1 Start creating CXXBindReferenceExpr nodes when binding complex types to references. 
llvm-svn: 94964
 2010-01-31 18:34:51 +00:00
Ken Dyck
160146eba2 Change the return type of ASTContext::getDeclAlignInBytes() to CharUnits and, 
now that the "InBytes" part of the name is implied by the return type, rename
it to getDeclAlign().

llvm-svn: 94681
 2010-01-27 17:10:57 +00:00
Ken Dyck
98ca79435a Introduce CodeGenModule::GetTargetTypeStoreSize() to calculate the store size 
of LLVM types in character units.

llvm-svn: 94542
 2010-01-26 13:48:07 +00:00
Anders Carlsson
20bbbd489b Make sure to always mark a global variable as not being constant if it has a C++ initializer. 
llvm-svn: 94504
 2010-01-26 04:02:23 +00:00
Ken Dyck
40775003e6 Roll out ASTContext::getTypeSizeInChars(), replacing instances of 
"ASTContext::getTypeSize() / 8". Replace [u]int64_t variables with CharUnits
ones as appropriate. 

Also rename RawType, fromRaw(), and getRaw() in CharUnits to QuantityType, 
fromQuantity(), and getQuantity() for clarity.

llvm-svn: 93153
 2010-01-11 17:06:35 +00:00
Anders Carlsson
61a401caec Pass ReturnValueSlot to EmitCall. No functionality change yet. 
llvm-svn: 92138
 2009-12-24 19:25:24 +00:00
Ken Dyck
8c89d59c82 Move the implementation of ASTContext::getTypeSizeInChars() to the .cpp file to 
avoid #including CharUnits.h in ASTContext.h.

llvm-svn: 91903
 2009-12-22 14:23:30 +00:00
Ken Dyck
01e620efaa Change the return type of ASTContext::getTypeSizeInChars() from uint64_t to the 
new opaque value type, CharUnits. This will help us avoid accidentally mixing 
quantities that are in bit and character units.

llvm-svn: 91689
 2009-12-18 15:55:54 +00:00
Ken Dyck
acfe6aa83a Rename getByteSize() and getTypeSizeInBytes() in ASTContext to getCharWidth() 
and getTypeSizeInChars() to reflect their basis in character type units, not
that of a possibly independent architecture-specific byte.

llvm-svn: 91688
 2009-12-18 15:24:05 +00:00
Mike Stump
aff69af918 Add cleanups for exceptional edges. WIP. 
llvm-svn: 90940
 2009-12-09 03:35:49 +00:00
Benjamin Kramer
ba8451b243 Use StringRef in CGDebugInfo::EmitFunctionStart. 
llvm-svn: 90856
 2009-12-08 14:04:35 +00:00
Benjamin Kramer
43c7c5befd Use a Twine to concatenate the name instead of going through std::string. 
llvm-svn: 90854
 2009-12-08 13:07:37 +00:00
Chris Lattner
e99c110d06 implement rdar://7346691 by codegen'ing struct/array initializers 
to a memset or a memcpy from a global when possible.

llvm-svn: 90658
 2009-12-05 08:22:11 +00:00
Chris Lattner
ffcd06ea7c simplify a condition and add a testcase. 
llvm-svn: 90652
 2009-12-05 06:49:57 +00:00
Anders Carlsson
ce2cd01647 Handle static_assert inside functions. 
llvm-svn: 90461
 2009-12-03 17:26:31 +00:00
Mike Stump
a68e2a2967 Add missing branch to exit. Seemingly obvious when I look at the 
code, but to track this down was laborious.

llvm-svn: 90356
 2009-12-02 23:28:08 +00:00
Daniel Dunbar
c76493a65d Don't pass false (default) for isVolatile parameter to CreateLoad. 
llvm-svn: 90098
 2009-11-29 21:23:36 +00:00
Douglas Gregor
48a409eb39 Rename CleanupScope -> DelayedCleanupBlock. No functionality change. 
llvm-svn: 89769
 2009-11-24 16:21:10 +00:00
Daniel Dunbar
785406bd19 Teach CodeGenFunction::EmitDecl to ignore Using and UsingShadow decls. 
llvm-svn: 89633
 2009-11-23 00:07:06 +00:00
Mike Stump
643818bdd8 Trim whitespace. 
llvm-svn: 89219
 2009-11-18 18:52:31 +00:00
Chandler Carruth
bc55fe26c6 Move CompileOptions -> CodeGenOptions, and sink it into the CodeGen library. 
This resolves the layering violation where CodeGen depended on Frontend.

llvm-svn: 86998
 2009-11-12 17:24:48 +00:00
Douglas Gregor
4ef1d400d9 Make sure that Type::getAs<ArrayType>() (or Type::getAs<subclass of 
ArrayType>()) does not instantiate. Update all callers that used this
unsafe feature to use the appropriate ASTContext::getAs*ArrayType method.

llvm-svn: 86596
 2009-11-09 22:08:55 +00:00
Fariborz Jahanian
09cc10f9f8 This patch extends CleanupScope to support destruction 
of array objects on block exit. Patch is by Anders Calrsson.

llvm-svn: 86032
 2009-11-04 17:57:40 +00:00
Tanya Lattner
f9d41df093 Merge constant array and structures. This will create a global variables for arrays and structs that are constant and their initializer is constant. It is on by default but can be disable with the flag -fno-merge-all-constants. 
llvm-svn: 85991
 2009-11-04 01:18:09 +00:00
Mike Stump
53f9ded62b Refine volatile handling, specifically, we must have the canonical 
type to look at the volatile specifier.  I found these all from just
hand auditing the code.

llvm-svn: 85967
 2009-11-03 23:25:48 +00:00