When RAV traverses a Stmt or Expr node, if the corresponding Traverse*
functions have not been overridden, it will now use data recursion to walk
those nodes. We arrange this to be an unobservable optimization to RAV
subclasses, and to gracefully degrade as parts of the visitation are overridden
with functions that might observe the visitation.
For instance, if an RAV subclass overrides TraverseUnaryNot, we will ensure
that there are real recursive stack frames for those traversals, but we'll
use data recursion for all other traversals.
This removes the need for DataRecursiveASTVisitor, and for the
'shouldUseDataRecursionFor' extension point, both of which are removed by this
change.
llvm-svn: 253948
This patch changes the generation of CGFunctionInfo to contain
the FunctionProtoType if it is available. This enables the code
generation for call instructions to look into this type for
exception information and therefore generate better quality
IR - it will not create invoke instructions for functions that
are know not to throw.
llvm-svn: 253926
hard coding /usr makes little sense for mingw-w64.
If we have portable toolchains having /usr breaks that.
If the clang we use is in /usr/bin or /usr/sbin etc this will
still detect as though it was hard coded to /usr
This makes the most sense going forward for mingw-w64 toolchains
on both linux and mac
Differential Revision: http://reviews.llvm.org/D14164
llvm-svn: 253898
(Re-apply patch after bug fixing)
This diff makes sure that the driver does not pass
-fomit-frame-pointer or -momit-leaf-frame-pointer to
the frontend when -pg is used. Currently, clang gives
an error if -fomit-frame-pointer is used in combination
with -pg, but -momit-leaf-frame-pointer was forgotten.
Also, disable frame pointer elimination in the frontend
when -pg is set.
Patch by Stefan Kempf.
llvm-svn: 253886
Runtime library requires, that codegen for 'depend' clause for 'out' dependency kind must be the same as codegen for 'depend' clause with 'inout' dependency.
llvm-svn: 253866
If AS of a variable/parameter declaration is not set by the source,
OpenCL v2.0 s6.5 defines explicit rules for default ASes:
- The AS of global and local static variables defaults to global;
- All pointers point to generic AS.
http://reviews.llvm.org/D13168
llvm-svn: 253863
the case where a specific range is replaced by new text. Previously,
the calculation would shift any position from within a replaced region
to the first character after the region. This is undersirable, e.g. for
clang-format's include sorting.
llvm-svn: 253859
This diff makes sure that the driver does not pass
-fomit-frame-pointer or -momit-leaf-frame-pointer to
the frontend when -pg is used. Currently, clang gives
an error if -fomit-frame-pointer is used in combination
with -pg, but -momit-leaf-frame-pointer was forgotten.
Also, disable frame pointer elimination in the frontend
when -pg is set.
Patch by Stefan Kempf.
llvm-svn: 253846
The pointer returned by __RTDynamicCast must be bitcasted. However, it
was not expected that __RTDynamicCast would be invoked, resulting in the
bitcast occuring in a different BasicBlock than the invoke. This caused
a down-stream PHI to get confused about which BasicBlock the incomming
value was from.
This fixes PR25606.
llvm-svn: 253843
Cross compiling from linux and OSX results in Error: Exec format.
This is because the linker is expecting ELF formated objects.
By passing the target we can explicitly tell the linker that
it should be linking COFF objects regardless of the host.
llvm-svn: 253813
This allows us to construct Linux toolchains without a valid linker. This
is needed for example to build a CUDA device toolchain after r253385.
llvm-svn: 253707
Rather than storing BeforeInfo in the DenseMap by value, this stores a
unique_ptr to it, so that we can keep a pointer to it live across
subsequent DenseMap insertions.
This change also removes the unique_ptr wrapper around BeforeVect
because now we're indirecting at a higher level.
llvm-svn: 253694
This patch adds support of #pragma vtordisp inside functions in attempt to improve compatibility. Microsoft compiler appears to save the stack of vtordisp modes on entry of struct methods' bodies and restore it on exit (method-local vtordisp).
Differential Revision: http://reviews.llvm.org/D14467
llvm-svn: 253650
The analyzer currently reports dead store false positives when a local variable
is captured by reference in a C++ lambda.
For example:
int local = 0; auto lambda = [&local]() {
local++;
};
local = 7; // False Positive: Value stored to 'local' is never read
lambda();
In this case, the assignment setting `local` to 7 is not a dead store because
the called lambda will later read that assigned value.
This commit silences this source of false positives by treating locals captured
by reference in C++ lambdas as escaped, similarly to how the DeadStoresChecker
deals with locals whose address is taken.
rdar://problem/22165179
llvm-svn: 253630
Summary: This code is a bit undesirable, but it gets clang to work with the autoconf and cmake-built libclang_rt.profile libraries.
Reviewers: bogner
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D14847
llvm-svn: 253625
Summary: 's' is used to specify sgprs and 'v' is used to specify vgprs.
Reviewers: arsenm, echristo
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D14307
llvm-svn: 253610
Also address a typo from a prior patch that performed a similar fix during Parsing of default non-type template arguments. I left the RAII ExpressionEvaluationContext variable Name as Unevaluated though we had switched the context to ConstantEvaluated.
There should be no functionality change here - since when expression evaluation context is popped off, for the most part these two contexts currently behave similarly in regards to lambda diagnostics and odr-use tracking.
Like its parsing counterpart, this patch presages the advent of constexpr lambda patches...
llvm-svn: 253590
Richard Smith