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path: root/lib/CodeGen/CGExpr.cpp
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2010-09-03Cope with llvm's reference to bool type of 'i1' vs. clang'sFariborz Jahanian
type of 'i8' for the same for __block variables of type bool. refixes radar 8382559. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113015 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-01Fix IRGen when property-dot syntax used to accessFariborz Jahanian
a c++ class object 'ivar'. Fixes radar 8366604. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112729 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Amusingly, I missed this point of abstraction in all my earlierJohn McCall
member-pointer refactoring: dereferencing a member data pointer. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112640 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Teach IR generation to return 'this' from constructors and destructorsJohn McCall
under the ARM ABI. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112588 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-25GCC didn't care for my attempt at API compatibility, so brute-force everythingJohn McCall
to the new constants. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112047 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-23fix rdar://8340348, a miscompile of boost that was exposed by r109848.Chris Lattner
That revision started classifying truly empty structs like "Y" and "X" as being NoClass/NoClass and turning them into 'ignore'. The call code turns around and allocates space for the ignored argument with GetUndefRValue. The bug is that GetUndefRValue would return the address as undef, instead of returning an object with a defined address but undefined contents. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111794 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-23Abstract out everything having to do with member pointers into the ABIJohn McCall
class; they should just be completely opaque throughout IR gen now, although I haven't really audited that. Fix a bug apparently inherited from gcc-4.2 where we failed to null-check member data pointers when performing derived-to-base or base-to-derived conversions on them. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111789 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-22Experiment with using first-class aggregates to represent member functionJohn McCall
pointers. I find the resulting code to be substantially cleaner, and it makes it very easy to use the same APIs for data member pointers (which I have conscientiously avoided here), and it avoids a plethora of potential inefficiencies due to excessive memory copying, but we'll have to see if it actually works. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111776 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-22Extract member function pointer comparison and null comparison intoJohn McCall
the ABI code. Implement correct semantics for these on ARM. I believe this completes the implementation of member function pointers on ARM. I think I'm going to switch member function pointers over to be non-aggregates while I have all this in mind. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111774 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen: Set the alignment correctly when creating LValue for a decls.Daniel Dunbar
- Fixes PR5598. - Review appreciated. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111726 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen: Move remaining LValue::Set... methods to LValue::set... (non-static) ↵Daniel Dunbar
methods. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111722 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen: Move remaining MakeAddr() calls to MakeAddrLValue().Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111721 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen: The CVR qualifiers in a subobject adjustment should just come from theDaniel Dunbar
field (I think). - Doug, please check. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111720 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen/LValue: Add LValue::setNonGC instead of SetObjCNonGC, for consistency ↵Daniel Dunbar
with isNonGC(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111718 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen: Switch more MakeAddr() users to MakeAddrLValue; this time for calls ↵Daniel Dunbar
which were previously not computing the qualifier list. In most cases, I don't think it matters, but I believe this is conservatively more correct / consistent. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111717 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen: Switch a bunch of trivial MakeAddr calls to use MakeAddrLValue.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111716 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen: Eliminate EmitPredefinedFunctionName(), it doesn't need to be ↵Daniel Dunbar
factored out. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111715 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen/CGValue: Add alignment to LValue, and use that alignment when ↵Daniel Dunbar
generating lvalue load/stores. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111710 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21IRgen: Change Emit{Load,Store}OfScalar to take a required Alignment argument andDaniel Dunbar
update callers as best I can. - This is a work in progress, our alignment handling is very horrible / sketchy -- I am just aiming for monotonic improvement. - Serious review appreciated. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111707 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-18fix typoChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111334 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-18Fix PR7889 by generalizing some over specialized code. There is noChris Lattner
reason that this should be limited to simple lvalues. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111331 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-17fix PR7892, a crash on valid in c++ codegen of __PRETTY_FUNCTION__Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111330 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-07Allow reference binding of a reference of Objective-C object type toDouglas Gregor
an lvalue of another, compatible Objective-C object type (e.g., a subclass). Introduce a new initialization sequence step kind to describe this binding, along with a new cast kind. Fixes PR7741. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110513 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-07Store inheritance paths after CastExprs instead of inside them.John McCall
This takes some trickery since CastExpr has subclasses (and indeed, is abstract). Also, smoosh the CastKind into the bitfield from Expr. Drops two words of storage from Expr in the common case of expressions which don't need inheritance paths. Avoids a separate allocation and another word of overhead in cases needing inheritance paths. Also has the advantage of not leaking memory, since destructors for AST nodes are never run. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110507 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Switch the destructor for a temporary arising from a reference binding over toJohn McCall
using a lazy cleanup. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108994 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Adopt objc_assign_threadlocal() for __thread variables of GC types.Fariborz Jahanian
Implements radar 8203301. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108917 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20implement rdar://5739832 - operator new should check for overflow in multiply,Chris Lattner
causing clang to compile this code into something that correctly throws a length error, fixing a potential integer overflow security attack: void *test(long N) { return new int[N]; } int main() { test(1L << 62); } We do this even when exceptions are disabled, because it is better for the code to abort than for the attack to succeed. This is heavily based on a patch that Fariborz wrote. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108915 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15Reinstate the scalar-cast-to-const-reference improvements, this timeDouglas Gregor
with the proper spelling of "non-class prvalue". Silly me, I think class rvalues were xvalues rather than prvalues! Hah hah hah. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108443 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15Revert r108431 and r108433 (the cast-to-const-reference fixes), whichDouglas Gregor
broke nightlytest. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108439 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15Spell isPRValue() properly.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108433 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15Teach CodeGenFunction::EmitCastLValue() to handle casts to an lvalueDouglas Gregor
that involve binding a reference to a pure rvalue temporary (e.g., not a class temporary), by creating a new temporary and copying the result there. Fixes PR6024. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108431 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15CK_BitCast is not an lvalue bitcast any longerDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108428 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-13Introduce a new cast kind for an "lvalue bitcast", which handlesDouglas Gregor
reinterpret_casts (possibly indirectly via C-style/functional casts) on values, e.g., int i; reinterpret_cast<short&>(i); The IR generated for this is essentially the same as for *reinterpret_cast<short*>(&i). Fixes PR6437, PR7593, and PR7344. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108294 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-08Reinstate the fix for PR7556. A silly use of isTrivial() wasDouglas Gregor
suppressing copies of objects with trivial copy constructors. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107857 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Revert r107828 and r107827, the fix for PR7556, which seems to beDouglas Gregor
breaking bootstrap on Linux. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107837 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Rename CXXZeroInitValueExpr to CXXScalarValueInitExpr, to reflect itsDouglas Gregor
newly-narrowed scope. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107828 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-06Validated by nightly-test runs on x86 and x86-64 darwin, including afterJohn McCall
self-host. Hopefully these results hold up on different platforms. I tried to keep the GNU ObjC runtime happy, but it's hard for me to test. Reimplement how clang generates IR for exceptions. Instead of creating new invoke destinations which sequentially chain to the previous destination, push a more semantic representation of *why* we need the cleanup/catch/filter behavior, then collect that information into a single landing pad upon request. Also reorganizes how normal cleanups (i.e. cleanups triggered by non-exceptional control flow) are generated, since it's actually fairly closely tied in with the former. Remove the need to track which cleanup scope a block is associated with. Document a lot of previously poorly-understood (by me, at least) behavior. The new framework implements the Horrible Hack (tm), which requires every landing pad to have a catch-all so that inlining will work. Clang no longer requires the Horrible Hack just to make exceptions flow correctly within a function, however. The HH is an unfortunate requirement of LLVM's EH IR. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107631 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-05in the "coerce" case, the ABI handling code ends up making theChris Lattner
alloca for an argument. Make sure the argument gets the proper decl alignment, which may be different than the type alignment. This fixes PR7567 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107627 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-01Remove unnecessary ASTContext parameter fromDouglas Gregor
CXXRecordDecl::getDestructor(); no functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107394 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-27Correctly destroy reference temporaries with global storage. Remove ↵Anders Carlsson
ErrorUnsupported call when binding a global reference to a non-lvalue. Fixes PR7326. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106983 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-27Add a CreateReferenceTemporary that will do the right thing for variables ↵Anders Carlsson
with global storage. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106982 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-27Simplify CodeGenFunction::EmitReferenceBindingToExpr as a first step towards ↵Anders Carlsson
fixing PR7326. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106981 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-27Reduce indentation.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106980 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-27finally get around to doing a significant cleanup to irgen:Chris Lattner
have CGF create and make accessible standard int32,int64 and intptr types. This fixes a ton of 80 column violations introduced by LLVMContextification and cleans up stuff a lot. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106977 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-26Implement rdar://7530813 - collapse multiple GEP instructions in IRgenChris Lattner
This avoids generating two gep's for common array operations. Before we would generate something like: %tmp = load i32* %X.addr ; <i32> [#uses=1] %arraydecay = getelementptr inbounds [100 x i32]* %A, i32 0, i32 0 ; <i32*> [#uses=1] %arrayidx = getelementptr inbounds i32* %arraydecay, i32 %tmp ; <i32*> [#uses=1] %tmp1 = load i32* %arrayidx ; <i32> [#uses=1] Now we generate: %tmp = load i32* %X.addr ; <i32> [#uses=1] %arrayidx = getelementptr inbounds [100 x i32]* %A, i32 0, i32 %tmp ; <i32*> [#uses=1] %tmp1 = load i32* %arrayidx ; <i32> [#uses=1] Less IR is better at -O0. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106966 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-26minor cleanup: don't emit the base of an array subscript until after Chris Lattner
we're done diddling around with the index stuff. Use a cheaper type comparison. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106963 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-26move scalar inc/dec codegen into ScalarExprEmitter instead Chris Lattner
of being in CGF. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106961 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-26use more efficient type comparison predicates.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106958 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-26Change EmitReferenceBindingToExpr to take a decl instead of a boolean.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106949 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-21Fix an Obj-C++ miscompile when calling an Obj-C method that returns a C++ ↵Anders Carlsson
reference. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106477 91177308-0d34-0410-b5e6-96231b3b80d8
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