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* DebugInfo: Attribute calls to overloaded operators with the operator, not ↵David Blaikie2015-01-251-2/+0
| | | | | | the start of the whole expression llvm-svn: 227028
* DebugInfo: Use the preferred location rather than the start location for ↵David Blaikie2015-01-251-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | expression line info This causes things like assignment to refer to the '=' rather than the LHS when attributing the store instruction, for example. There were essentially 3 options for this: * The beginning of an expression (this was the behavior prior to this commit). This meant that stepping through subexpressions would bounce around from subexpressions back to the start of the outer expression, etc. (eg: x + y + z would go x, y, x, z, x (the repeated 'x's would be where the actual addition occurred)). * The end of an expression. This seems to be what GCC does /mostly/, and certainly this for function calls. This has the advantage that progress is always 'forwards' (never jumping backwards - except for independent subexpressions if they're evaluated in interesting orders, etc). "x + y + z" would go "x y z" with the additions occurring at y and z after the respective loads. The problem with this is that the user would still have to think fairly hard about precedence to realize which subexpression is being evaluated or which operator overload is being called in, say, an asan backtrace. * The preferred location or 'exprloc'. In this case you get sort of what you'd expect, though it's a bit confusing in its own way due to going 'backwards'. In this case the locations would be: "x y + z +" in lovely postfix arithmetic order. But this does mean that if the op+ were an operator overload, say, and in a backtrace, the backtrace will point to the exact '+' that's being called, not to the end of one of its operands. (actually the operator overload case doesn't work yet for other reasons, but that's being fixed - but this at least gets scalar/complex assignments and other plain operators right) llvm-svn: 227027
* DebugInfo: Correct the line location of geps on array accessesDavid Blaikie2015-01-241-0/+1
| | | | llvm-svn: 227023
* DebugInfo: Remove outdated comment. Column info is no longer needed to ↵David Blaikie2015-01-231-6/+0
| | | | | | differentiate inline callsites. llvm-svn: 226955
* DebugInfo: Remove forced column-info workaround for inlined callsDavid Blaikie2015-01-211-15/+2
| | | | | | | | | | | | | | | | | This workaround was to provide unique call sites to ensure LLVM's inline debug info handling would properly unique two calls to the same function on the same line. Instead, this has now been fixed in LLVM (r226736) and the workaround here can be removed. Originally committed in r176895, but this isn't a straight revert due to all the changes since then. I just searched for anything ForcedColumn* related and removed them. We could test this - but it didn't strike me as terribly valuable once we're no longer adding this workaround everything just works as expected & it's no longer a special case to test for. llvm-svn: 226738
* [cleanup] Re-sort *all* #include lines with llvm/utils/sort_includes.pyChandler Carruth2015-01-141-1/+1
| | | | | | | | | | Sorry for the noise, I managed to miss a bunch of recent regressions of include orderings here. This should actually sort all the includes for Clang. Again, no functionality changed, this is just a mechanical cleanup that I try to run periodically to keep the #include lines as regular as possible across the project. llvm-svn: 225979
* Reapply r225000 (reverted in r225555): DebugInfo: Generalize debug info ↵David Blaikie2015-01-141-27/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | location handling (and follow-up commits). Several pieces of code were relying on implicit debug location setting which usually lead to incorrect line information anyway. So I've fixed those (in r225955 and r225845) separately which should pave the way for this commit to be cleanly reapplied. The reason these implicit dependencies resulted in crashes with this patch is that the debug location would no longer implicitly leak from one place to another, but be set back to invalid. Once a call with no/invalid location was emitted, if that call was ever inlined it could produce invalid debugloc chains and assert during LLVM's codegen. There may be further cases of such bugs in this patch - they're hard to flush out with regression testing, so I'll keep an eye out for reports and investigate/fix them ASAP if they come up. Original commit message: Reapply "DebugInfo: Generalize debug info location handling" Originally committed in r224385 and reverted in r224441 due to concerns this change might've introduced a crash. Turns out this change fixes the crash introduced by one of my earlier more specific location handling changes (those specific fixes are reverted by this patch, in favor of the more general solution). Recommitted in r224941 and reverted in r224970 after it caused a crash when building compiler-rt. Looks to be due to this change zeroing out the debug location when emitting default arguments (which were meant to inherit their outer expression's location) thus creating call instructions without locations - these create problems for inlining and must not be created. That is fixed and tested in this version of the change. Original commit message: This is a more scalable (fixed in mostly one place, rather than many places that will need constant improvement/maintenance) solution to several commits I've made recently to increase source fidelity for subexpressions. This resetting had to be done at the DebugLoc level (not the SourceLocation level) to preserve scoping information (if the resetting was done with CGDebugInfo::EmitLocation, it would've caused the tail end of an expression's codegen to end up in a potentially different scope than the start, even though it was at the same source location). The drawback to this is that it might leave CGDebugInfo out of sync. Ideally CGDebugInfo shouldn't have a duplicate sense of the current SourceLocation, but for now it seems it does... - I don't think I'm going to tackle removing that just now. I expect this'll probably cause some more buildbot fallout & I'll investigate that as it comes up. Also these sort of improvements might be starting to show a weakness/bug in LLVM's line table handling: we don't correctly emit is_stmt for statements, we just put it on every line table entry. This means one statement split over multiple lines appears as multiple 'statements' and two statements on one line (without column info) are treated as one statement. I don't think we have any IR representation of statements that would help us distinguish these cases and identify the beginning of each statement - so that might be something we need to add (possibly to the lexical scope chain - a scope for each statement). This does cause some problems for GDB and possibly other DWARF consumers. llvm-svn: 225956
* Reimplement -fsanitize-recover family of flags.Alexey Samsonov2015-01-121-38/+85
| | | | | | | | | | | | | | | | | | | | | | | | Introduce the following -fsanitize-recover flags: - -fsanitize-recover=<list>: Enable recovery for selected checks or group of checks. It is forbidden to explicitly list unrecoverable sanitizers here (that is, "address", "unreachable", "return"). - -fno-sanitize-recover=<list>: Disable recovery for selected checks or group of checks. - -f(no-)?sanitize-recover is now a synonym for -f(no-)?sanitize-recover=undefined,integer and will soon be deprecated. These flags are parsed left to right, and mask of "recoverable" sanitizer is updated accordingly, much like what we do for -fsanitize= flags. -fsanitize= and -fsanitize-recover= flag families are independent. CodeGen change: If there is a single UBSan handler function, responsible for implementing multiple checks, which have different recoverable setting, then we emit two handler calls instead of one: the first one for the set of "unrecoverable" checks, another one - for set of "recoverable" checks. If all checks implemented by a handler have the same recoverability setting, then the generated code will be the same. llvm-svn: 225719
* Rename RefersToCapturedVariable to RefersToEnclosingVariableOrCapture, NFCAlexey Bataev2015-01-121-1/+1
| | | | llvm-svn: 225624
* Revert "DebugInfo: Generalize debug info location handling" and related commitsDavid Blaikie2015-01-091-10/+27
| | | | | | | | | | | | This reverts commit r225000, r225021, r225083, r225086, r225090. The root change (r225000) still has several issues where it's caused calls to be emitted without debug locations. This causes assertion failures if/when those calls are inlined. I'll work up some test cases and fixes before recommitting this. llvm-svn: 225555
* CodeGen: Don't crash when a lambda uses a local constexpr variableDavid Majnemer2015-01-011-16/+16
| | | | | | | | | | | The DeclRefExpr might be for a variable initialized by a constant expression which hasn't been ODR used. Emit the initializer for the variable instead of trying to capture the variable itself. This fixes PR22071. llvm-svn: 225060
* Reapply "DebugInfo: Generalize debug info location handling"David Blaikie2014-12-301-27/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Originally committed in r224385 and reverted in r224441 due to concerns this change might've introduced a crash. Turns out this change fixes the crash introduced by one of my earlier more specific location handling changes (those specific fixes are reverted by this patch, in favor of the more general solution). Recommitted in r224941 and reverted in r224970 after it caused a crash when building compiler-rt. Looks to be due to this change zeroing out the debug location when emitting default arguments (which were meant to inherit their outer expression's location) thus creating call instructions without locations - these create problems for inlining and must not be created. That is fixed and tested in this version of the change. Original commit message: This is a more scalable (fixed in mostly one place, rather than many places that will need constant improvement/maintenance) solution to several commits I've made recently to increase source fidelity for subexpressions. This resetting had to be done at the DebugLoc level (not the SourceLocation level) to preserve scoping information (if the resetting was done with CGDebugInfo::EmitLocation, it would've caused the tail end of an expression's codegen to end up in a potentially different scope than the start, even though it was at the same source location). The drawback to this is that it might leave CGDebugInfo out of sync. Ideally CGDebugInfo shouldn't have a duplicate sense of the current SourceLocation, but for now it seems it does... - I don't think I'm going to tackle removing that just now. I expect this'll probably cause some more buildbot fallout & I'll investigate that as it comes up. Also these sort of improvements might be starting to show a weakness/bug in LLVM's line table handling: we don't correctly emit is_stmt for statements, we just put it on every line table entry. This means one statement split over multiple lines appears as multiple 'statements' and two statements on one line (without column info) are treated as one statement. I don't think we have any IR representation of statements that would help us distinguish these cases and identify the beginning of each statement - so that might be something we need to add (possibly to the lexical scope chain - a scope for each statement). This does cause some problems for GDB and possibly other DWARF consumers. llvm-svn: 225000
* Revert "DebugInfo: Generalize debug info location handling"David Blaikie2014-12-291-10/+27
| | | | | | | | | Asserting when building compiler-rt when using a GCC host compiler. Reverting while I investigate. This reverts commit r224941. llvm-svn: 224970
* Reapply "DebugInfo: Generalize debug info location handling"David Blaikie2014-12-291-27/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Originally committed in r224385 and reverted in r224441 due to concerns this change might've introduced a crash. Turns out this change fixes the crash introduced by one of my earlier more specific location handling changes (those specific fixes are reverted by this patch, in favor of the more general solution). Original commit message: This is a more scalable (fixed in mostly one place, rather than many places that will need constant improvement/maintenance) solution to several commits I've made recently to increase source fidelity for subexpressions. This resetting had to be done at the DebugLoc level (not the SourceLocation level) to preserve scoping information (if the resetting was done with CGDebugInfo::EmitLocation, it would've caused the tail end of an expression's codegen to end up in a potentially different scope than the start, even though it was at the same source location). The drawback to this is that it might leave CGDebugInfo out of sync. Ideally CGDebugInfo shouldn't have a duplicate sense of the current SourceLocation, but for now it seems it does... - I don't think I'm going to tackle removing that just now. I expect this'll probably cause some more buildbot fallout & I'll investigate that as it comes up. Also these sort of improvements might be starting to show a weakness/bug in LLVM's line table handling: we don't correctly emit is_stmt for statements, we just put it on every line table entry. This means one statement split over multiple lines appears as multiple 'statements' and two statements on one line (without column info) are treated as one statement. I don't think we have any IR representation of statements that would help us distinguish these cases and identify the beginning of each statement - so that might be something we need to add (possibly to the lexical scope chain - a scope for each statement). This does cause some problems for GDB and possibly other DWARF consumers. llvm-svn: 224941
* Revert "DebugInfo: Generalize debug info location handling"David Blaikie2014-12-171-10/+27
| | | | | | | | | Fails an ASan bootstrap - I'll try to reproduce locally & sort that out before recommitting. This reverts commit r224385. llvm-svn: 224441
* DebugInfo: Generalize debug info location handlingDavid Blaikie2014-12-161-27/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a more scalable (fixed in mostly one place, rather than many places that will need constant improvement/maintenance) solution to several commits I've made recently to increase source fidelity for subexpressions. This resetting had to be done at the DebugLoc level (not the SourceLocation level) to preserve scoping information (if the resetting was done with CGDebugInfo::EmitLocation, it would've caused the tail end of an expression's codegen to end up in a potentially different scope than the start, even though it was at the same source location). The drawback to this is that it might leave CGDebugInfo out of sync. Ideally CGDebugInfo shouldn't have a duplicate sense of the current SourceLocation, but for now it seems it does... - I don't think I'm going to tackle removing that just now. I expect this'll probably cause some more buildbot fallout & I'll investigate that as it comes up. Also these sort of improvements might be starting to show a weakness/bug in LLVM's line table handling: we don't correctly emit is_stmt for statements, we just put it on every line table entry. This means one statement split over multiple lines appears as multiple 'statements' and two statements on one line (without column info) are treated as one statement. I don't think we have any IR representation of statements that would help us distinguish these cases and identify the beginning of each statement - so that might be something we need to add (possibly to the lexical scope chain - a scope for each statement). This does cause some problems for GDB and possibly other DWARF consumers. llvm-svn: 224385
* Renamed RefersToEnclosingLocal bitfield to RefersToCapturedVariable.Alexey Bataev2014-12-161-4/+5
| | | | | | | Bitfield RefersToEnclosingLocal of Stmt::DeclRefExprBitfields renamed to RefersToCapturedVariable to reflect latest changes introduced in commit 224323. Also renamed method Expr::refersToEnclosingLocal() to Expr::refersToCapturedVariable() and comments for constant arguments. No functional changes. llvm-svn: 224329
* [OPENMP] Bugfix for processing of global variables in OpenMP regions.Alexey Bataev2014-12-161-15/+15
| | | | | | | | Currently, if global variable is marked as a private OpenMP variable, the compiler crashes in debug version or generates incorrect code in release version. It happens because in the OpenMP region the original global variable is used instead of the generated private copy. It happens because currently globals variables are not captured in the OpenMP region. This patch adds capturing of global variables iff private copy of the global variable must be used in the OpenMP region. Differential Revision: http://reviews.llvm.org/D6259 llvm-svn: 224323
* Implement the __builtin_call_with_static_chain GNU extension.Peter Collingbourne2014-12-121-5/+11
| | | | | | | | | | | | | | | | The extension has the following syntax: __builtin_call_with_static_chain(Call, Chain) where Call must be a function call expression and Chain must be of pointer type This extension performs a function call Call with a static chain pointer Chain passed to the callee in a designated register. This is useful for calling foreign language functions whose ABI uses static chain pointers (e.g. to implement closures). Differential Revision: http://reviews.llvm.org/D6332 llvm-svn: 224167
* DebugInfo: Correct location information for array accesses to elements of ↵David Blaikie2014-12-101-0/+3
| | | | | | variable array type. llvm-svn: 223902
* DebugInfo: Fix another case of array access line informationDavid Blaikie2014-12-101-0/+3
| | | | llvm-svn: 223897
* DebugInfo: Correct the location of array accessesDavid Blaikie2014-12-101-0/+2
| | | | | | | Especially relevant to ASan when dealing with complex expressions containing multiple array accesses. See PR21737. llvm-svn: 223872
* IR: Update clang for Metadata/Value split in r223802Duncan P. N. Exon Smith2014-12-091-7/+12
| | | | | | Match LLVM API changes from r223802. llvm-svn: 223803
* DebugInfo: Correctly identify the location of C++ member initializer list ↵David Blaikie2014-12-091-1/+5
| | | | | | | | | | | | | elements This particularly helps the fidelity of ASan reports (which can occur even in these examples - if, for example, one uses placement new over a buffer of insufficient size - now ASan will correctly identify which member's initialization went over the end of the buffer). This doesn't cover all types of members - more coming. llvm-svn: 223726
* DebugInfo: Ensure the store for an assignment is attributed to the beginning ↵David Blaikie2014-12-081-0/+2
| | | | | | of the assignment expression llvm-svn: 223699
* This patch fixes couple of bugs for predefined expressionFariborz Jahanian2014-11-141-1/+4
| | | | | | | | | used inside blocks. It fixes a crash in naming code for __func__ etc. when used in a block declared globally. It also brings back old naming convention for predefined expression which was broken. rdar://18961148 llvm-svn: 222065
* Bundle conditions checked by UBSan with sanitizer kinds they implement.Alexey Samsonov2014-11-111-34/+33
| | | | | | | | | | | | | | | | | | | | | | | | Summary: This change makes CodeGenFunction::EmitCheck() take several conditions that needs to be checked (all of them need to be true), together with sanitizer kinds these checks are for. This would allow to split one call into UBSan runtime into several calls in case different sanitizer kinds would have different recoverability settings. Tests should be fixed accordingly, I'm working on it. Test Plan: regression test suite. Reviewers: rsmith Reviewed By: rsmith Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D6219 llvm-svn: 221716
* [OPENMP] Codegen for threadprivate variablesAlexey Bataev2014-11-111-0/+20
| | | | | | | | | For all threadprivate variables which have constructor/destructor emit call to void __kmpc_threadprivate_register(ident_t * <Current Location>, void *<Original Global Addr>, kmpc_ctor <Constructor>, kmpc_cctor NULL, kmpc_dtor <Destructor>); In expressions all references to such variables are replaced by calls to void *__kmpc_threadprivate_cached(ident_t *<Current Location>, kmp_int32 <Current Thread Id>, void *<Original Global Addr>, size_t <Size of Data>, void ***<Pointer to autogenerated cache – array of private copies of threadprivate variable>); Test test/OpenMP/threadprivate_codegen.cpp checks that codegen is correct. Also it checks that codegen is correct after serialization/deserialization and one of passes verifies debug info. Differential Revision: http://reviews.llvm.org/D4002 llvm-svn: 221663
* CGExpr.cpp: Suppress a warning. [-Wunused-variable]NAKAMURA Takumi2014-11-111-0/+2
| | | | llvm-svn: 221655
* Propagate SanitizerKind into CodeGenFunction::EmitCheck() call.Alexey Samsonov2014-11-101-18/+54
| | | | | | | | | | | | | | | | Make sure CodeGenFunction::EmitCheck() knows which sanitizer it emits check for. Make CheckRecoverableKind enum an implementation detail and move it away from header. Currently CheckRecoverableKind is determined by the type of sanitizer ("unreachable" and "return" are unrecoverable, "vptr" is always-recoverable, all the rest are recoverable). This will change in future if we allow to specify which sanitizers are recoverable, and which are not by -fsanitize-recover= flag. No functionality change. llvm-svn: 221635
* Introduce a SanitizerKind enum to LangOptions.Alexey Samsonov2014-11-071-12/+15
| | | | | | | | | | | | | Use the bitmask to store the set of enabled sanitizers instead of a bitfield. On the negative side, it makes syntax for querying the set of enabled sanitizers a bit more clunky. On the positive side, we will be able to use SanitizerKind to eventually implement the new semantics for -fsanitize-recover= flag, that would allow us to make some sanitizers recoverable, and some non-recoverable. No functionality change. llvm-svn: 221558
* Get rid of SanitizerOptions::Disabled global. NFC.Alexey Samsonov2014-10-301-13/+12
| | | | | | | | | SanitizerOptions is not even a POD now, so having global variable of this type, is not nice. Instead, provide a regular constructor and clear() method, and let each CodeGenFunction has its own copy of SanitizerOptions it uses. llvm-svn: 220920
* CodeGen: correct materialize temporary aggregates in ARC modeSaleem Abdulrasool2014-10-241-3/+17
| | | | | | | | | | | | | | | | | | Avoid an assertion when materializing a lifetime type aggregate temporary. When performing CodeGen for ObjC++, we could generate a lifetime-only aggregate temporary by using an initializer list (which is effectively an array). We would reach through the temporary expression, fishing out the inner expression. If this expression was a lifetime expression, we would attempt to emit this as a scalar. This would eventually result in an assertion as the emission would eventually assert that the expression being emitted has a scalar evaluation kind. Add a case to handle the aggregate expressions. Use the EmitAggExpr to emit the aggregate expression rather than the EmitScalarInit. Addresses PR21347. llvm-svn: 220590
* CodeGen: trivial conversion to range based loopSaleem Abdulrasool2014-10-241-4/+4
| | | | | | Switch to a range-based for loop. NFC. llvm-svn: 220587
* SanitizerBlacklist: blacklist functions by their source location.Alexey Samsonov2014-10-171-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit changes the way we blacklist functions in ASan, TSan, MSan and UBSan. We used to treat function as "blacklisted" and turned off instrumentation in it in two cases: 1) Function is explicitly blacklisted by its mangled name. This part is not changed. 2) Function is located in llvm::Module, whose identifier is contained in the list of blacklisted sources. This is completely wrong, as llvm::Module may not correspond to the actual source file function is defined in. Also, function can be defined in a header, in which case user had to blacklist the .cpp file this header was #include'd into, not the header itself. Such functions could cause other problems - for instance, if the header was included in multiple source files, compiled separately and linked into a single executable, we could end up with both instrumented and non-instrumented version of the same function participating in the same link. After this change we will make blacklisting decision based on the SourceLocation of a function definition. If a function is not explicitly defined in the source file, (for example, the function is compiler-generated and responsible for initialization/destruction of a global variable), then it will be blacklisted if the corresponding global variable is defined in blacklisted source file, and will be instrumented otherwise. After this commit, the active users of blacklist files may have to revisit them. This is a backwards-incompatible change, but I don't think it's possible or makes sense to support the old incorrect behavior. I plan to make similar change for blacklisting GlobalVariables (which is ASan-specific). llvm-svn: 219997
* Moving CGF::EmitAlignmentAssumption to IRBuilderHal Finkel2014-10-151-29/+0
| | | | | | | | The functionality contained in CodeGenFunction::EmitAlignmentAssumption has been moved to IRBuilder (so that it can also be used by LLVM-level code). Remove this now-duplicate implementation in favor of the IRBuilder code. llvm-svn: 219877
* Sanitize upcasts and conversion to virtual base.Alexey Samsonov2014-10-131-11/+13
| | | | | | | | | | | This change adds UBSan check to upcasts. Namely, when we perform derived-to-base conversion, we: 1) check that the pointer-to-derived has suitable alignment and underlying storage, if this pointer is non-null. 2) if vptr-sanitizer is enabled, and we perform conversion to virtual base, we check that pointer-to-derived has a matching vptr. llvm-svn: 219642
* Revert r218865 because it introduced PR21236, a crash in codegen emitting ↵Nick Lewycky2014-10-101-27/+11
| | | | | | the try block. llvm-svn: 219470
* Fix for bug http://llvm.org/PR17427.Alexey Bataev2014-10-091-79/+12
| | | | | | | | Assertion failed: "Computed __func__ length differs from type!" Reworked PredefinedExpr representation with internal StringLiteral field for function declaration. Differential Revision: http://reviews.llvm.org/D5365 llvm-svn: 219393
* Fix IRGen for referencing a static local before emitting its declReid Kleckner2014-10-081-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | Summary: Previously CodeGen assumed that static locals were emitted before they could be accessed, which is true for automatic storage duration locals. However, it is possible to have CodeGen emit a nested function that uses a static local before emitting the function that defines the static local, breaking that assumption. Fix it by creating the static local upon access and ensuring that the deferred function body gets emitted. We may not be able to emit the initializer properly from outside the function body, so don't try. Fixes PR18020. See also previous attempts to fix static locals in PR6769 and PR7101. Reviewers: rsmith Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D4787 llvm-svn: 219265
* MS ABI: Implement thread_local for global variablesDavid Majnemer2014-10-051-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | Summary: This add support for the C++11 feature, thread_local global variables. The ABI Clang implements is an improvement of the MSVC ABI. Sadly, further improvements could be made but not without sacrificing ABI compatibility. The feature is implemented as follows: - All thread_local initialization routines are pointed to from the .CRT$XDU section. - All non-weak thread_local variables have their initialization routines call from a single function instead of getting their own .CRT$XDU section entry. This is done to open up optimization opportunities to the compiler. - All weak thread_local variables have their own .CRT$XDU section entry. This entry is in a COMDAT with the global variable it is initializing; this ensures that we will initialize the global exactly once. - Destructors are registered in the initialization function using __tlregdtor. Differential Revision: http://reviews.llvm.org/D5597 llvm-svn: 219074
* Emit lifetime.start / lifetime.end markers for unnamed temporary objects.Arnaud A. de Grandmaison2014-10-021-11/+27
| | | | | | | This will give more information to the optimizers so that they can reuse stack slots and reduce stack usage. llvm-svn: 218865
* Merge GetAddrOfCXXConstructor and GetAddrOfCXXDonstructor. NFC.Rafael Espindola2014-09-111-2/+2
| | | | llvm-svn: 217598
* Implement nonnull-attribute sanitizerAlexey Samsonov2014-09-081-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | Summary: This patch implements a new UBSan check, which verifies that function arguments declared to be nonnull with __attribute__((nonnull)) are actually nonnull in runtime. To implement this check, we pass FunctionDecl to CodeGenFunction::EmitCallArgs (where applicable) and if function declaration has nonnull attribute specified for a certain formal parameter, we compare the corresponding RValue to null as soon as it's calculated. Test Plan: regression test suite Reviewers: rsmith Reviewed By: rsmith Subscribers: cfe-commits, rnk Differential Revision: http://reviews.llvm.org/D5082 llvm-svn: 217389
* Add __builtin_assume and __builtin_assume_aligned using @llvm.assume.Hal Finkel2014-09-071-0/+28
| | | | | | | | | | | This makes use of the recently-added @llvm.assume intrinsic to implement a __builtin_assume(bool) intrinsic (to provide additional information to the optimizer). This hooks up __assume in MS-compatibility mode to mirror __builtin_assume (the semantics have been intentionally kept compatible), and implements GCC's __builtin_assume_aligned as assume((p - o) & mask == 0). LLVM now contains special logic to deal with assumptions of this form. llvm-svn: 217349
* Kill one of EmitCallArgs overloads. NFC.Alexey Samsonov2014-08-281-1/+1
| | | | llvm-svn: 216635
* Simplify creation of a bunch of ArrayRefs by using None, makeArrayRef or ↵Craig Topper2014-08-271-1/+1
| | | | | | just letting them be implicitly created. llvm-svn: 216528
* Pass expressions instead of argument ranges to EmitCall/EmitCXXConstructorCall.Alexey Samsonov2014-08-211-9/+6
| | | | | | | | | | | | | | | | | | | | | | | Summary: This is a first small step towards passing generic "Expr" instead of ArgBeg/ArgEnd pair into EmitCallArgs() family of methods. Having "Expr" will allow us to get the corresponding FunctionDecl and its ParmVarDecls, thus allowing us to alter CodeGen depending on the function/parameter attributes. No functionality change. Test Plan: regression test suite Reviewers: rnk Reviewed By: rnk Subscribers: aemerson, cfe-commits Differential Revision: http://reviews.llvm.org/D4915 llvm-svn: 216214
* ext_vector IRGen. Patch to allow indexing into Fariborz Jahanian2014-08-191-3/+35
| | | | | | | ext_vector_type's 'hi/lo' components when used as lvalue. rdar://18031917 pr20697 llvm-svn: 215991
* [Sanitizer] Introduce SanitizerMetadata class.Alexey Samsonov2014-08-011-3/+3
| | | | | | | | | | | | | | It is responsible for generating metadata consumed by sanitizer instrumentation passes in the backend. Move several methods from CodeGenModule to SanitizerMetadata. For now the class is stateless, but soon it won't be the case. Instead of creating globals providing source-level information to ASan, we will create metadata nodes/strings which will be turned into actual global variables in the backend (if needed). No functionality change. llvm-svn: 214564
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