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path: root/lib/CodeGen/CGExprCXX.cpp
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2013-03-13Tighten up the rules for precise lifetime and documentJohn McCall
the requirements on the ARC optimizer. rdar://13407451 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176924 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07Change hasAggregateLLVMType, which conflates complex andJohn McCall
aggregate types in a profoundly wrong way that has to be worked around in every call site, to getEvaluationKind, which classifies and distinguishes between all of these cases. Also, normalize the API for loading and storing complexes. I'm working on a larger patch and wanted to pull these changes out, but it would have be annoying to detangle them from each other. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176656 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-28Use the actual ABI-determined C calling convention for runtimeJohn McCall
calls and declarations. LLVM has a default CC determined by the target triple. This is not always the actual default CC for the ABI we've been asked to target, and so we sometimes find ourselves annotating all user functions with an explicit calling convention. Since these calling conventions usually agree for the simple set of argument types passed to most runtime functions, using the LLVM-default CC in principle has no effect. However, the LLVM optimizer goes into histrionics if it sees this kind of formal CC mismatch, since it has no concept of CC compatibility. Therefore, if this module happens to define the "runtime" function, or got LTO'ed with such a definition, we can miscompile; so it's quite important to get this right. Defining runtime functions locally is quite common in embedded applications. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176286 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-15Abstract out emitting the vdtor calls and do it properly when using -cxx-abi ↵Timur Iskhodzhanov
microsoft; also fix vdtor calls for the ARM ABI git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175271 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-13Emit virtual/deleting destructors properly with -cxx-abi microsoft, PR15058Timur Iskhodzhanov
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175045 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-03CodeGen: Implement hint values for dynamic_cast as described in the Itanium ↵Benjamin Kramer
C++ ABI. This can yield dramatic speedups of dynamic_cast for simple inheritance trees, at least with libsupc++. Neither libcxxabi nor libcxxrt make use of this hint currently, it was never implemented because clang didn't support it. There was some concern about the number of class hierarchy walks this change introduces. If it turns out to be an issue we can add caching either at the cast pair level or even deeper, but we also do a lot of walks in Sema so this codepath is probably fairly optimized already. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174293 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-03CodeGen: Mark the runtime function __dynamic_cast as readonly & nounwind.Benjamin Kramer
This allows the optimizer to CSE dynamic_casts. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174289 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-31When we're emitting a constructor or destructor call from a delegatingDouglas Gregor
constructor, retrieve our VTT parameter directly. Fixes PR14588 / <rdar://problem/12867962>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174042 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-02Rewrite #includes for llvm/Foo.h to llvm/IR/Foo.h as appropriate toChandler Carruth
reflect the migration in r171366. Re-sort the #include lines to reflect the new paths. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171369 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04Sort all of Clang's files under 'lib', and fix up the broken headersChandler Carruth
uncovered. This required manually correcting all of the incorrect main-module headers I could find, and running the new llvm/utils/sort_includes.py script over the files. I also manually added quite a few missing headers that were uncovered by shuffling the order or moving headers up to be main-module-headers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169237 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-01Simplify: replace getContext().getLangOpts() with just getLangOpts().Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167261 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-25Cleanup some clang code to use new type functions instead of using cast<>.Micah Villmow
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166684 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-25-fcatch-undefined-behavior checking for appropriate vptr value: Clang ↵Richard Smith
CodeGen side. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166661 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-25When we're devirtualizing a method call, make sure the method has the ↵Eli Friedman
correct IR type. Reported in the thread "devirtualisation appears to crash clang on covariant functions on ARM" on cfe-dev. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166651 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-23Switch CodeGenOptions over to a .def file, like we do with LangOptions.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166497 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-09-fcatch-undefined-behavior: emit calls to the runtime library whenever one ↵Richard Smith
of the checks fails. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165536 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-30CodeGen: Copy tail padding when we're not dealing with a trivial copy assign ↵Benjamin Kramer
or move assign operator. This fixes a regression from r162254, the optimizer has problems reasoning about the smaller memcpy as it's often not safe to widen a store but making it smaller is. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164917 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25When performing a ::delete of an object with a virtual destructor,John McCall
be sure to delete the complete object pointer, not the original pointer. This is necessary if the base being deleted is at a non-zero offset in the complete object. This is only required for objects with virtual destructors because deleting an object via a base-class subobject when the base does not have a virtual destructor is undefined behavior. Noticed while reviewing the last four years of cxx-abi-dev activity. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164597 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-10Remove redundant semicolons which are null statements.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163546 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-08-fcatch-undefined-behavior: Factor emission of the creation of, and branch to,Richard Smith
the trap BB out of the individual checks and into a common function, to prepare for making this code call into a runtime library. Rename the existing EmitCheck to EmitTypeCheck to clarify it and to move it out of the way of the new EmitCheck. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163451 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-25Fix a CodeGen bug where we would skip zero-initialization forEli Friedman
array new with a non-trivial constructor. Pointed out in PR13380. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162643 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-24New -fcatch-undefined-behavior features:Richard Smith
* when checking that a pointer or reference refers to appropriate storage for a type, also check the alignment and perform a null check * check that references are bound to appropriate storage * check that 'this' has appropriate storage in member accesses and member function calls git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162523 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-15Devirtualize calls on glvalues produced by class member access expressions.Richard Smith
Based on a patch by Yin Ma! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161998 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-13Factor out computation of whether a typeid's expression is potentiallyRichard Smith
evaluated into a CXXTypeid member function. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161779 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-09The delete argument should not be converted to void*.Abramo Bagnara
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159961 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-07Distinguish more carefully between free functions and C++ instance methodsJohn McCall
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159894 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28Compare the canonical types and document why we give up on the covariant case.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159360 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28Disable devirtualization when we have covariant returns. I will open a bugRafael Espindola
for tracking this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159351 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28Don't devirtualize calls when we don't have the correct type of the this pointerRafael Espindola
handy. It can be done, but we would have to build a derived-to-base cast during codegen to compute the correct this pointer. I will handle covariant returns next. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159350 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-28Fix another issue with devirtualizing calls to final methods by passing themRafael Espindola
the correct this pointer. There is some potential for sharing a bit more code with canDevirtualizeMemberFunctionCalls, but that can be done in an independent patch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159326 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-27Implement John McCall's review of r159212 other than the this pointer notRafael Espindola
being updated. Will fix that in a second. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159280 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Fix a bug in my previous patch: If we are not doing a virtual call becauseRafael Espindola
the member expression is qualified, call the method specified in the code, not the most derived one we can find. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159219 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26During codegen of a virtual call we would extract any casts in the expressionRafael Espindola
to see if we had an underlying final class or method, but we would then use the cast type to do the call, resulting in a direct call to the wrong method. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159212 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-06Revert Decl's iterators back to pointer value_type rather than reference ↵David Blaikie
value_type In addition, I've made the pointer and reference typedef 'void' rather than T* just so they can't get misused. I would've omitted them entirely but std::distance likes them to be there even if it doesn't use them. This rolls back r155808 and r155869. Review by Doug Gregor incorporating feedback from Chandler Carruth. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158104 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-20Zap a bogus assert for delegating constructors. PR12890, part 2.Eli Friedman
I'm pretty sure we are in fact doing the right thing here, but someone who knows the standard better should double-check that we are in fact supposed to zero out the member in the given testcase. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157138 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-30Remove the ref/value inconsistency in filter_decl_iterator.David Blaikie
filter_decl_iterator had a weird mismatch where both op* and op-> returned T* making it difficult to generalize this filtering behavior into a reusable library of any kind. This change errs on the side of value, making op-> return T* and op* return T&. (reviewed by Richard Smith) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155808 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-27Use enum to set debug info size generated by ClangAlexey Samsonov
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155697 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-16Propagate alignment on lvalues through EmitLValueForField. PR12395.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154789 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-29Revert r153613 as it's causing large compile-time regressions on the nightly ↵Chad Rosier
testers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153660 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28When we can't prove that the target of an aggregate copy isJohn McCall
a complete object, the memcpy needs to use the data size of the structure instead of its sizeof() value. Fixes PR12204. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153613 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-11Unify naming of LangOptions variable/get function across the Clang stack ↵David Blaikie
(Lex to AST). The member variable is always "LangOpts" and the member function is always "getLangOpts". Reviewed by Chris Lattner git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152536 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-29Formatting.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151700 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-24Reapply r151172 - Unwind path cleanup for array new list initializers - with aChad Rosier
test case that only runs on debug builds. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151311 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-23Replace a use of hasTrivialDefaultConstructor() with the appropriateDouglas Gregor
isTrivial() call. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151259 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-22Revert r151172: Unwind path cleanup for array new list initializers.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151203 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-22Unwind path cleanup for array new list initializers.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151172 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-22CodeGen for array new list initializers. Doesn't correctly clean up in the ↵Sebastian Redl
face of exceptions yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151171 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-19Make heap-allocation of std::initializer_list 'work'.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150931 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-17Whether an argument is required (in contrast with being anJohn McCall
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150788 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16Elide copy construction in new expressions. PR11757.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150738 91177308-0d34-0410-b5e6-96231b3b80d8
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