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path: root/lib/CodeGen/CGExprScalar.cpp
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2010-09-17Add a -ftrapv-handler= option which allows a handler to invoke instead of ↵David Chisnall
simply aborting when a signed operation overflows. This mirrors the (GCC-incompatible) behaviour from clang 1.0 and 1.1 when -ftrapv was specified, but allows the handler to be defined for each compilation unit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114192 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-17Patch to add IRgen support for Gnu's conditional operatorFariborz Jahanian
extension when missing LHS. This patch covers scalar conditionals only. Others are wip. (pr7726, radar 8353567). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114182 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-15one piece of code is responsible for the lifetime of every aggregateJohn McCall
slot. The easiest way to do that was to bundle up the information we care about for aggregate slots into a new structure which demands that its creators at least consider the question. I could probably be convinced that the ObjC 'needs GC' bit should be rolled into this structure. Implement generalized copy elision. The main obstacle here is that IR-generation must be much more careful about making sure that exactly git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113962 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-13Eagerly evaluate type traits in Sema instead of lazily in AST. They actually ↵Sebastian Redl
need Sema access to be correct, fixes coming up. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113782 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-11Augment -ftrapv to check for divide by zero, mod by zero, and INT_MIN % -1.Chris Lattner
Patch by John Regehr! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113705 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-10Implement CXXNoexceptExpr codegen.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113629 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-04Casting of a property reference to 'void' did notFariborz Jahanian
generate the necessary code. This patch fixes it. // rdar://8389655 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113079 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03Truncate block variable of bool type to i1 when itsFariborz Jahanian
value is used. This matches with non-block variable use of bool type. (Fixes radar 8390062). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113027 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03IRgen: Fix silly thinko in r112021, which was generating code for the same exprDaniel Dunbar
twice. This showed up as an assert on the odd test case because we generated the decl map entry twice. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112943 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
2010-08-30Revert my user-defined literal commits - r1124{58,60,67} pendingSean Hunt
some issues being sorted out. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112493 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-30Two minor fixes to user-defined literals:Sean Hunt
- Zero-initialize UDLData so that crashes stop - Stop complaining that we can't emit them (we most certainly can) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112467 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
2010-08-25More incremental progress towards not including Expr.h in Sema.h.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112044 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-25IRgen: Fix a horrible bug in pointer to bool conversion, which we were treatingDaniel Dunbar
as a truncation not a comparison to null. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112021 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-23Emit an error noting that Clang does not support code generation forDouglas Gregor
the ternary operator without a left-hand side in C++ (PR7726), from Jean-Daniel Dupas! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111809 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
2010-08-22Eliminate a stale assertion. Fixes Clang self-host.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111782 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: 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
2010-08-13Zap unused UnaryOperator::OffsetOf.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110996 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10Simplify code and add comments, in code that generate debug info for ↵Devang Patel
constant integer globals, based on Chris's feedback. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110694 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10Even if a constant's evaluated value is used, emit debug info for the ↵Devang Patel
constant variable. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110660 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
2010-08-07Correct -ftrapv to trap on errors, instead of calling theChris Lattner
__overflow_handler entrypoint that David Chisnall made up. Calling __overflow_handler is not part of the contract of -ftrapv provided by GCC, and should never have been checked in in the first place. According to: http://permalink.gmane.org/gmane.comp.compilers.clang.devel/8699 David is using this for some of arbitrary precision integer stuff or something, which is not an appropriate thing to implement on this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110490 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06Initialize variable to work around warning; unfortunately, there isn't anyEli Friedman
way to tell gcc "really, values outside the enum aren't valid". git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110450 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06Attempt to fix uninitialized value warning reported on cfe-commits.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110418 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05Argument evaluation order is not guaranteed. Split these out to force an order.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110354 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05Fix a major bug with -ftrapv and ++/--. Patch by David Keaton!John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110347 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05Add IRGen support for non-constant OffsetOfExpr.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110326 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-23Vectors are not integer types, so the type system should not classifyDouglas Gregor
them as such. Type::is(Signed|Unsigned|)IntegerType() now return false for vector types, and new functions has(Signed|Unsigned|)IntegerRepresentation() cover integer types and vector-of-integer types. This fixes a bunch of latent bugs. Patch from Anton Yartsev! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109229 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Update ImplicitCastExpr to be able to represent an XValue.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108807 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
2010-06-29IRgen: Assignment to Objective-C properties shouldn't reload the value (whichDaniel Dunbar
would trigger an extra method call). - While in the area, I also changed Clang to not emit an unnecessary load from 'x' in cases like 'y = (x = 1)'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107210 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-28Fix UnitTests/2004-02-02-NegativeZero.c, which regressed whenChris Lattner
I broke negate of FP values. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107019 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
2010-06-26fix inc/dec to honor -fwrapv and -ftrapv, implementing PR7426.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106962 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
2010-06-26Fix unary minus to trap on overflow with -ftrapv, refactoring binopChris Lattner
code so we can use it from VisitUnaryMinus. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106957 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-26Implement support for -fwrapv, rdar://7221421Chris Lattner
As part of this, pull together trapv handling into the same enum. This also add support for NSW multiplies. This also makes PCH disagreement on overflow behavior silent, since it really doesn't matter except for warnings and codegen (no macros get defined etc). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106956 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-26implement rdar://7432000 - signed negate should codegen as NSW.Chris Lattner
While I'm in there, adjust pointer to member adjustments as well. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106955 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-09Fix a gcc warning.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105670 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-08Extend __builtin_shufflevector to expose the full power of the llvm ↵Nate Begeman
shufflevector instruction. This means it can now be used for vector truncation and concatenation. This will be used for the ARM NEON implementation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105589 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-22Really fix PR7139. There was one boost test that we still failed, and my ↵Anders Carlsson
first fix broke self-host. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104447 91177308-0d34-0410-b5e6-96231b3b80d8
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