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2012-01-29When emitting an ARC epilogue that looks like a return of 'self',John McCall
kill the retain from the return site. This has the workaround nature. It's badness all around. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149193 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-29Get a little bit smarter about killing off the ReturnValue allocaJohn McCall
in the presence of straight-line cleanups. This is a simple but important case, particularly for ARC. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149190 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-28objc-arc: Perform null check on receiver before sending methods whichFariborz Jahanian
consume one or more of their arguments. If not done, this will cause a leak as method will not consume the argument when receiver is null. // rdar://10444474 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149184 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-28Make the __builtin_c[lt]zs builtins target independent.Benjamin Kramer
There is really no reason to have these only available on x86. It's just __builtin_c[tl]z for shorts. Modernize the test while at it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149183 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-27Placate gcc's -Wreturn-typeMatt Beaumont-Gay
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149104 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-26Make clz/ctz builtins defined for zero on ARM targets. rdar://10732455Bob Wilson
ARM supports clz and ctz directly and both operations have well-defined results for zero. There is no disadvantage in performance to using the defined-at-zero versions of llvm.ctlz/cttz intrinsics. We're running into ARM-specific code written with the assumption that __builtin_clz(0) == 32, even though that value is technically undefined. The code is failing now because of llvm optimizations that are taking advantage of the undef behavior (specifically svn r147255). There's nothing wrong with that optimization on x86 where any incorrect assumptions about __builtin_clz(0) will quickly be exposed. For ARM, though, optimizations based on that undef behavior are likely to cause subtle bugs. Other targets with defined-at-zero clz/ctz support may want to override the default behavior as well. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149086 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-26Use createRecordFwdDecl here since that's what we're doing.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149051 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-26Revert previous patch unifying all of the C++ record prep in one area,Eric Christopher
the gdb testsuite complains too much about the ordering of items printed, even if the offsets in the debug info are correct. This reverts commit 027cb30af828f07750f9185782822297a5c57231. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149049 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-26Remove another duplicated variable.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149047 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-26Use function pointers, rather than references, to pass DestroyersPeter Collingbourne
around, in the process cleaning up the various gcc/msvc compiler workarounds. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149036 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-26Tidy and remove some unused variables.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149015 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-26Collect this information together. No reason to have it split.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149013 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-26Refactor into its own function.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149012 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-25Add some ABI tweaks for i386-pc-win32 triple so that we return structs in an ↵Eli Friedman
MSVC-compatible way. Patch by Joe Groff. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148992 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-25Clean up comment.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148982 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-25Fixup r148926, for -Asserts.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148943 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-25reapply r148902:Chris Lattner
"use the new ConstantVector::getSplat method where it makes sense." Also simplify a bunch of code to use the Builder->getInt32 instead of doing it the hard and ugly way. Much more progress could be made here, but I don't plan to do it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148926 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-25Fix a crash for an edge case of the GNU ?: extension.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148923 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-25Revert 148902 which was part of 148901 which was reverted in r148906.Argyrios Kyrtzidis
Original log: use the new ConstantVector::getSplat method where it makes sense. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148907 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-25Refactor the record decl forward declaration code a bit.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148904 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-25Typo.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148903 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-25use the new ConstantVector::getSplat method where it makes sense.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148902 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-24The following patch adds __attribute__((no_address_safety_analysis)) which ↵Kostya Serebryany
will allow to disable address safety analysis (such as e.g. AddressSanitizer or SAFECode) for a specific function. When building with AddressSanitizer, add AddressSafety function attribute to every generated function except for those that have __attribute__((no_address_safety_analysis)). With this patch we will be able to 1. disable AddressSanitizer for a particular function 2. disable AddressSanitizer-hostile optimizations (such as some cases of load widening) when AddressSanitizer is on. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148842 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-23Make sure the integer type used to align the vaarg address is the same as theAkira Hatanaka
type of pointers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148753 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-23Ignore return type if its size is zero.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148744 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-23Add support for -fno-optimize-sibling-calls. Currently only implemented in theNick Lewycky
X86 backend in LLVM. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148689 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-21Add an assertion that our use-marking actually covers all uses of a ↵Eli Friedman
variable. The assertion doesn't cover quite as much as it should, but it's a good start, at least. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148625 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-20When adding types to the context chain for record types, just emitEric Christopher
a forward declaration unless we already have a type. We can fill it in later if it's actually used. Fixes PR11345 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148584 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-20More dead code removal (using -Wunreachable-code)David Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148577 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-20use llvm:Attributes instead of unsignedKostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148554 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-18test svn commit accessSeth Cantrell
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148388 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-18Fix a string over-run detected by ASAN.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148375 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-18Fix special king of typo.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148368 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17output body of folded case again.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148361 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17Folding away unreachable case statement.Fariborz Jahanian
patch (slightly revised) by Aaron Ballman. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148359 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17Make sure to initialize ExternalProtocolPtrTyDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148358 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17Add __builtin_labs and __builtin_llabs, to complete the set of ↵Eli Friedman
__builtin_*abs. Patch by Ruben Van Boxem. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148340 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17Remove constant member pointer support from Expr-based constant emission nowRichard Smith
that APValue-based constant emission knows how to emit member pointers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148336 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17Enable the new ObjC ARC autorelease pool elimination pass.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148331 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17When initializing a catch variable in ARC, be sure to emit retainsJohn McCall
or whatever else is required for the initialization instead of assuming it can be done with a simple store. Fixes PR11732. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148325 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17Don't eagerly deserialize the 'Protocol' type when initializing codeDouglas Gregor
generation for Objective-C; it may not be needed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148317 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17Remove unnecessary default cases in switches over enums.David Blaikie
This allows -Wswitch-enum to find switches that need updating when these enums are modified. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148281 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-16Add support for OpenCL 1.1 logical operations.Tanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148254 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-16Fixes a crash during constant folding of a switch and case Fariborz Jahanian
statement which has an unscoped case inside it. Patch by Aaron Ballman git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148243 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-16Some improvements to the handling of C11 atomic types:David Chisnall
- Add atomic-to/from-nonatomic cast types - Emit atomic operations for arithmetic on atomic types - Emit non-atomic stores for initialisation of atomic types, but atomic stores and loads for every other store / load - Add a __atomic_init() intrinsic which does a non-atomic store to an _Atomic() type. This is needed for the corresponding C11 stdatomic.h function. - Enables the relevant __has_feature() checks. The feature isn't 100% complete yet, but it's done enough that we want people testing it. Still to do: - Make the arithmetic operations on atomic types (e.g. Atomic(int) foo = 1; foo++;) use the correct LLVM intrinsic if one exists, not a loop with a cmpxchg. - Add a signal fence builtin - Properly set the fenv state in atomic operations on floating point values - Correctly handle things like _Atomic(_Complex double) which are too large for an atomic cmpxchg on some platforms (this requires working out what 'correctly' means in this context) - Fix the many remaining corner cases git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148242 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-14De-virtualize getPreviousDecl() and getMostRecentDecl() when we knowDouglas Gregor
we have a redeclarable type, and only use the new virtual versions (getPreviousDeclImpl() and getMostRecentDeclImpl()) when we don't have that type information. This keeps us from penalizing users with strict type information (and is the moral equivalent of a "final" method). Plus, settle on the names getPreviousDecl() and getMostRecentDecl() throughout. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148187 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-14Remove a redundant word.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148179 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-14constexpr irgen: Add irgen support for APValue::Struct, APValue::Union,Richard Smith
APValue::Array and APValue::MemberPointer. All APValue values can now be emitted as constants. Add new CGCXXABI entry point for emitting an APValue MemberPointer. The other entrypoints dealing with constant member pointers are no longer necessary and will be removed in a later change. Switch codegen from using EvaluateAsRValue/EvaluateAsLValue to VarDecl::evaluateValue. This performs caching and deals with the nasty cases in C++11 where a non-const object's initializer can refer indirectly to previously-initialized fields within the same object. Building the intermediate APValue object incurs a measurable performance hit on pathological testcases with huge initializer lists, so we continue to build IR directly from the Expr nodes for array and record types outside of C++11. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148178 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
2012-01-12Formatting.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147989 91177308-0d34-0410-b5e6-96231b3b80d8
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