The changes to InstCombine do seem a bit silly - it doesn't make
anything obviously better to have the caller access the pointers element
type (the thing I'm trying to remove) than the GEP itself, but it's a
helpful migration step. This will allow me to more obviously lock down
GEP (& Load, etc) API usage, then fix all the code that accesses pointer
element types except the places that need to be removed (most of the
InstCombines) anyway - at which point I'll need to just remove all that
code because it won't be meaningful anymore (there will be no pointer
types, so no bitcasts to combine)
llvm-svn: 233126
This patch tries to merge duplicate landing pads when they branch to a common shared target.
Given IR that looks like this:
lpad1:
%exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
cleanup
br label %shared_resume
lpad2:
%exn2 = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
cleanup
br label %shared_resume
shared_resume:
call void @fn()
ret void
}
We can rewrite the users of both landing pad blocks to use one of them. This will generally allow the shared_resume block to be merged with the common landing pad as well.
Without this change, tail duplication would likely kick in - creating N (2 in this case) copies of the shared_resume basic block.
Differential Revision: http://reviews.llvm.org/D8297
llvm-svn: 233125
This code depended on a bug in the FindAssociatedSection function that would
cause it to return the wrong result for certain absolute expressions. Instead,
use EvaluateAsRelocatable.
llvm-svn: 233119
prune it when we have disabled implicit module generation and thus are
not using any cached modules.
Also update a test of explicitly generated modules to pass this CC1 flag
correctly.
This fixes an issue where Clang was dropping files into the source tree
while running its tests.
llvm-svn: 233117
Assert that this doesn't fire - I'll remove all of this later, but just
leaving it in for a while in case this is firing & we just don't have
test coverage.
llvm-svn: 233116
There are two aspects of non-determinism fixed here, which was the
minimum required to cause at least an empty module to be deterministic.
First, the random number signature is only inserted into the module when
we are building modules implicitly. The use case for these random
signatures is to work around the very fact that modules are not
deterministic in their output when working with the implicitly built and
populated module cache. Eventually this should go away entirely when
we're confident that Clang is producing deterministic output.
Second, the on-disk hash table is populated based on the order of
iteration over a DenseMap. Instead, use a MapVector so that we can walk
it in insertion order.
I've added a test that an empty module, when built twice, produces the
same binary PCM file.
llvm-svn: 233115
Summary:
This path adds -gdb-show command with 1 option: target-async.
Also it adds tests for -gdb-set and -gdb-show commands.
All tests pass on OS X.
Test Plan: ./dotest.py -v --executable $BUILDDIR/bin/lldb -f MiGdbSetShowTestCase
Reviewers: clayborg, abidh
Reviewed By: clayborg, abidh
Subscribers: lldb-commits, clayborg, abidh
Differential Revision: http://reviews.llvm.org/D8566
llvm-svn: 233114
Summary:
This patch adds support for CLI command in lldb-mi. It's useful ability which also was implemented in gdb.
All tests pass on OS X.
Test Plan: ./dotest.py -v --executable $BUILDDIR/bin/lldb tools/lldb-mi/interpreter/
Reviewers: ted, clayborg, abidh
Reviewed By: clayborg, abidh
Subscribers: jingham, lldb-commits, ted, clayborg, abidh
Differential Revision: http://reviews.llvm.org/D8483
llvm-svn: 233112
This is the IR optimizer follow-on patch for D8563: the x86 backend patch
that converts this kind of shuffle back into a vperm2.
This is also a continuation of the transform that started in D8486.
In that patch, Andrea suggested that we could convert vperm2 intrinsics that
use zero masks into a single shuffle.
This is an implementation of that suggestion.
Differential Revision: http://reviews.llvm.org/D8567
llvm-svn: 233110
I'm about to commit a patch for:
http://reviews.llvm.org/D8567
That patch will break this one existing test case in Clang.
I'm not sure if this file is intending to create a Clang
dependency on the LLVM IR optimizer, but that's the
consequence of specifying -O3 on this test file.
My hope is to avoid buildbot rage by removing this check,
committing the LLVM patch, and then fixing this check.
I don't know how to make a simultaneous commit to Clang
and LLVM.
I will commit the correct CHECK line fix for this test
shortly.
llvm-svn: 233109
This caused PR23008, compiles failing with: "Use still stuck around after Def is
destroyed: %.sroa.speculated"
Also reverting follow-up r233064.
llvm-svn: 233105
IRCE requires the induction variables it handles to not sign-overflow.
The current scheme of checking if sext({X,+,S}) == {sext(X),+,sext(S)}
fails when SCEV simplifies sext(X) too. After this change we //also//
check no-signed-wrap by looking at the flags set on the SCEVAddRecExpr.
llvm-svn: 233102
vperm2x128 instructions have the special ability (aka free hardware capability)
to shuffle zero values into a vector.
This patch recognizes that type of shuffle and generates the appropriate
control byte.
https://llvm.org/bugs/show_bug.cgi?id=22984
Differential Revision: http://reviews.llvm.org/D8563
llvm-svn: 233100
Since ClangASTSource::layoutRecordType() was overriding a virtual
function in the base, this was inadvertently causing a new method
to be introduced rather than an override. To fix this all method
signatures are changed back to taking DenseMaps, and the `override`
keyword is added to make sure this type of error doesn't happen
again.
To keep the original fix intact, which is that fields and bases
must be added in offset order, the ImportOffsetMap() function
now copies the DenseMap into a vector and then sorts the vector
on the value type (e.g. the offset) before iterating over the
sorted vector and inserting the items.
llvm-svn: 233099
Summary:
This commit adds this alternate route only when parsing variable dies
corresponding to global or static variables. The motivation for this is that GCC
does not emit linkage names for functions and variables declared/defined in
anonymous namespaces. Having this alternate route fixes one part of
TestNamespace which fails when the test case is compiled with GCC.
An alternate route to get fully qualified names of functions whose linkage names
are missing will be added with a followup change. With that, the other failing
part of TestNamespace will also be fixed.
Test Plan: dotest.py -C gcc -p TestNamespace
Reviewers: clayborg
Reviewed By: clayborg
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D8569
llvm-svn: 233098
This change caused test failures on darwin, and the followup which was
meant to fix those caused compiler-rt to start failing to link.
Reverting to get the build working again.
This reverts r233071 and r233036.
llvm-svn: 233097
Move definition of `MDLocation` after `MDLocalScope` so that the latter
is available for casts in the former. Similarly, move the definition of
`MDFile` as early as possible so that other classes can cast to it in
their definitions. (Follow-up commits will take advantage of this.)
llvm-svn: 233096
The main verifier already recurses through the other entry points, so we
might as well descend here too.
This temporarily duplicates some work already done in
`verifyDebugInfo()`, but eventually I'll be removing the other side.
llvm-svn: 233095
Add a subclass of `MDScope` to explicitly categorize the legal scopes
for locals -- in particular, scopes that are legal for `MDLocation`,
`MDLexicalBlockBase`, and `MDLocalVariable`. This provides a convenient
`isa<>` target for the verifier, and eventually I'll be changing the
above classes' `getScope()` to specifically return it. Currently, its
subclasses are `MDSubprogram`, `MDLexicalBlock`, and
`MDLexicalBlockFile`.
I've gone with `MDLocalScope` for now -- a little ambiguous since it's a
scope *for* locals, not a scope that's local -- but I'm open to more
descriptive names if someone can think of something better. Regardless,
the code docs should make it clear enough.
llvm-svn: 233092
Simplify boolean expressions using `true` and `false` with `clang-tidy`
Patch by Richard Thomson.
Reviewed By: nlewycky
Differential Revision: http://reviews.llvm.org/D8528
llvm-svn: 233091
Prior to this patch, we would try to synthesize class types by
iterating over a DenseMap of FieldDecls and adding each one to
a CXXRecordDecl. Since a DenseMap doesn't provide a deterministic
ordering of the elements, this would not add the fields in
FieldOffset order, but rather in some random order determined by
the memory layout of the DenseMap.
This patch fixes the issue by changing DenseMaps to vectors. The
ability to lookup a value in the DenseMap was hardly being used,
and where it is sufficient to do a vector lookup.
Differential Revision: http://reviews.llvm.org/D8512
llvm-svn: 233090
Simplify boolean expressions using `true` and `false` with `clang-tidy`
Patch by Richard Thomson.
Reviewed By: rengolin
Differential Revision: http://reviews.llvm.org/D8525
llvm-svn: 233089
Visual C++ shows the "right shift by too large amount" warning if
`MipsELFReference` is instantiated for 32-bit target and `Elf_Rel_Impl::getType`
method has `unsigned char` return type. We can freely suppress the warning in
that case because MIPS 32-bit ABI does not pack multiple relocation types into
the single field `r_type` and the `MipsELFReference::_tag` should be always
zero in that case.
No functional changes.
llvm-svn: 233088
Summary:
Anynoumous namespaces inject a using directive into the AST to import
the names into the containing namespace.
We should not have them in headers, but there is another warning for
that.
Reviewers: djasper
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D8443
llvm-svn: 233087
This includes following:
# Add a missing Process argument when calling GetSharedModule in DynamicLoaderDarwinKernel::KextImageInfo::LoadImageUsingMemoryModule
# Fix PlatformDarwinKernel::GetSharedModule prototype
llvm-svn: 233084
After removing the ability of using lldb-mi as 'lldb', a lot of code has become redundant. This commit removes some of that code.
Note: Some files are being removed. The cmake file has been updated. Please update xcode project accordingly.
llvm-svn: 233083
On remote platform --setsid option is not used and currently it is also
impossible to get the sid of an lldb-platform instance running on a
remote target.
Differential revision: http://reviews.llvm.org/D8317
llvm-svn: 233081
David Blaikie