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path: root/lib/CodeGen/CGRecordLayoutBuilder.cpp
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2012-06-27Propagate lvalue alignment into bitfields. Per report on cfe-dev.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159295 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
2012-05-01Add support for laying out vtordisps according to our currentJohn McCall
working knowledge of the Microsoft ABI. Based on a patch by Dmitry Sokolov. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155905 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
2012-04-27Add a missing check in CodeGen of packed classes with vtables. ↵Eli Friedman
<rdar://problem/11324125>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155689 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
2012-03-04Silence a GCC warning about a set-but-not-used variable in release builds.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152005 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-13A base subobject type doesn't make sense for unions; don't try to compute ↵Eli Friedman
it. Based on patch by Yin Ma. Fixes PR11751. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148093 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12Make CGRecordLayoutBuilder correctly switch over to a packed class when a ↵Eli Friedman
class has a base whose alignment will break the class layout. <rdar://problem/10551376>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146443 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-07Make sure we correctly zero-initialize unions containing a pointer to data ↵Eli Friedman
member as the first field. PR11487. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146009 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Fix the layout of vb-tables and vf-tables in the MS C++ ABI.John McCall
Based on work by Dmitry Sokolov! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144072 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-18Rewrite parts of MS ABI C++ layout. Based on work by r4start; I ended up ↵Eli Friedman
doing this while I was trying to review his patch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142325 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-10Constant expression evaluation refactoring:Richard Smith
- Remodel Expr::EvaluateAsInt to behave like the other EvaluateAs* functions, and add Expr::EvaluateKnownConstInt to capture the current fold-or-assert behaviour. - Factor out evaluation of bitfield bit widths. - Fix a few places which would evaluate an expression twice: once to determine whether it is a constant expression, then again to get the value. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141561 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-02Extend the ASTContext constructor to delay the initialization ofDouglas Gregor
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). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138985 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-12switch clang to use the new-new way of creating llvm::StructType's.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137472 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-23remove unneeded llvm:: namespace qualifiers on some core types now that ↵Chris Lattner
LLVM.h imports them into the clang namespace. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135852 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-18de-constify llvm::Type, patch by David Blaikie!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135370 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-09clang side to match the LLVM IR type system rewrite patch.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134831 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21IRgen: Add a -fuse-register-sized-bitfield-access option, for testing.Daniel Dunbar
- Changes bit-field access policy to try to use (aligned) register sized accesses. The idea here is that by using larger accesses we expose more coalescing potential to the backend when we have situations like adjacent bit-fields in the same structure (which is common), and that the backend should be smart enough to narrow the accesses down when no coalescing is done or when it is shown not to be profitable. -- $ clang -m32 -O3 -S -o - t.c _f0: ## @f0 pushl %ebp movl %esp, %ebp movl 8(%ebp), %eax movb (%eax), %cl andb $-128, %cl orb $1, %cl movb %cl, (%eax) movb 1(%eax), %cl andb $-128, %cl orb $1, %cl movb %cl, 1(%eax) movb 2(%eax), %cl andb $-128, %cl orb $1, %cl movb %cl, 2(%eax) movb 3(%eax), %cl andb $-128, %cl orb $1, %cl movb %cl, 3(%eax) popl %ebp ret $ clang -m32 -O3 -S -o - t.c -Xclang -fuse-register-sized-bitfield-access _f0: ## @f0 pushl %ebp movl %esp, %ebp movl 8(%ebp), %eax movl $-2139062144, %ecx ## imm = 0xFFFFFFFF80808080 andl (%eax), %ecx orl $16843009, %ecx ## imm = 0x1010101 movl %ecx, (%eax) popl %ebp ret -- git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133532 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-20Introduce Type::isSignedIntegerOrEnumerationType() andDouglas Gregor
Type::isUnsignedIntegerOrEnumerationType(), which are like Type::isSignedIntegerType() and Type::isUnsignedIntegerType() but also consider the underlying type of a C++0x scoped enumeration type. Audited all callers to the existing functions, switching those that need to also handle scoped enumeration types (e.g., those that deal with constant values) over to the new functions. Fixes PR9923 / <rdar://problem/9447851>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131735 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-03Finish off rules for z-length bitfields in ms_structFariborz Jahanian
structs. // rdar://8823265 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130783 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02More rule enforcement of zero bitfields for ms_struct.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130696 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-27Some refactoring of my ms_struct patch.Fariborz Jahanian
// rdar://8823265 related. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130311 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-26With ms_struct attribut, Zero-length bitfields following Fariborz Jahanian
non-bitfield members are ignore. // rdar://8823265 wip git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130257 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-24Simplify AppendTailPadding() by converting its parameter to CharUnits. NoKen Dyck
change in functionality intended. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130108 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-24Eliminate literal 8s from LayoutUnionField by converting NumBytesToAppend toKen Dyck
CharUnits. No change in functionality intended. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130107 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-24Eliminate literal 8s from LayoutBitField(), converting variables toKen Dyck
CharUnits or replacing the 8s with char align. No change in functionality intended. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130106 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-24Convert AccessInfo::AccessAlignment to CharUnits. No change in functionalityKen Dyck
intended. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130087 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-24Convert CGBitFieldInfo::FieldByteOffset to CharUnits. No change inKen Dyck
functionality intended. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130085 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-17When laying out bases in, always try the "base subobject" LLVM type. If itAnders Carlsson
turns out that a field or base needs to be laid out in the tail padding of the base, CGRecordLayoutBuilder::ResizeLastBaseFieldIfNecessary will convert it to an array of i8. I've audited the new test results to make sure that they are still valid. I've also verified that we pass a self-host with this change. This (finally) fixes PR5589! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129673 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-17Use a SmallVector for field types in CGRecordLayoutBuilder now that ↵Anders Carlsson
llvm::StructType::get takes an ArrayRef. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129667 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-22Fix typo in comment.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128088 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-26A much-delayed response to Ken Dyck's review: make this somewhat moreJohn McCall
char-width agnostic. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126542 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17improve support for big endian targets, fixing PR8171, patchChris Lattner
by Heikki Kultala! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125784 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-15Refactor CGRecordLayoutBuilder to use CharUnits more consistently.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125605 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-15Perform zero-initialization of virtual base classes when emitting John McCall
a zero constant for a complete class. rdar://problem/8424975 To make this happen, track the field indexes for virtual bases in the complete object. I'm curious whether we might be better off making CGRecordLayoutBuilder *much* more reliant on ASTRecordLayout; we're currently duplicating an awful lot of the ABI layout logic. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125555 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-15Convert RecordLayout::Alignment to CharUnits from bit units. No change inKen Dyck
functionality intended. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125549 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11Add a helper function, ASTContext::toBits(), that converts sizes inKen Dyck
CharUnits to sizes in bits, and use it to tidy up the places where the conversion was done explicitly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125332 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-10Drop the 'InBits' part from the name of RecordSizeInBits as the value is inKen Dyck
character units. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125281 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-10Eliminate some signed-to-unsigned comparision warnings introduced inKen Dyck
r125156. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125280 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-09Convert RecordLayout::Size to CharUnits from bits. No changes toKen Dyck
functionality intended. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125156 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-08Convert RecordLayout::NonVirtualAlign to CharUnits. No change inKen Dyck
functionality intended. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125069 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-01Convert RecordLayout::NonVirtualSize from bit units to CharUnits.Ken Dyck
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124646 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10Fix another obscure corner layout case.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121436 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-04Add a LayoutBase member function. No functionality change.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120924 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-04Replace calls to AppendBytes with calls to AppendPadding when the bytes ↵Anders Carlsson
appended are padding. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120922 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-30CGRecordLayoutBuilder does not need to be exported from this module.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120489 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-28Don't store the maximum alignment, we can trivially compute it.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120268 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-28More work on laying out virtual bases.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120257 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-25Begin work on actually laying out virtual bases.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120140 91177308-0d34-0410-b5e6-96231b3b80d8
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