This allows allows us to replace ISD::EXTRACT_ELEMENT, which is lowered
using shifts, with ISD::EXTRACT_VECTOR_ELT, which is a no-op.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205187 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Where those ISA's are not currently supported, the test is run with the smallest
superset of that ISA.
Some instructions are valid but don't pass yet. These have been placed in the
valid-xfail.s's which will XPASS if _any_ instruction starts working.
The valid.s's do not verify the encoding yet. There are also no tests checking that instructions from neighbouring ISA's are not accepted.
Reviewers: matheusalmeida
Reviewed By: matheusalmeida
Differential Revision: http://llvm-reviews.chandlerc.com/D3214
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205180 91177308-0d34-0410-b5e6-96231b3b80d8
When the loop vectorizer vectorizes code that uses the loop induction variable,
we often end up with IR like this:
%b1 = insertelement <2 x i32> undef, i32 %v, i32 0
%b2 = shufflevector <2 x i32> %b1, <2 x i32> undef, <2 x i32> zeroinitializer
%i = add <2 x i32> %b2, <i32 2, i32 3>
If the add in this example is not legal (as is the case on PPC with VSX), it
will be scalarized, and we'll end up with a number of extract_vector_elt nodes
with the vector shuffle as the input operand, and that vector shuffle is fed by
one or more build_vector nodes. By the time that vector operations are
expanded, visitEXTRACT_VECTOR_ELT will not create new extract_vector_elt by
looking through the vector shuffle (to make sure that no illegal operations are
created), and so the extract_vector_elt -> vector shuffle -> build_vector is
never simplified to an operand of the build vector.
By looking at build_vectors through a shuffle we fix this particular situation,
preventing a vector from being built, only to be deconstructed again (for the
scalarized add) -- an expensive proposition when this all needs to be done via
the stack. We probably want a more comprehensive fix here where we look back
recursively through any shuffles to any build_vectors or scalar_to_vectors,
etc. but that can come later.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205179 91177308-0d34-0410-b5e6-96231b3b80d8
While reviewing r204163, I noticed that the MIPS16 test only checked for a .ent
directive and didn't actually check the code emitted. Fixed this and added a
check for llvm.bswap.i32 on MIPS64 at the same time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205177 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
The FileHeader mapping now accepts an optional Flags sequence that accepts
the EF_<arch>_<flag> constants. When not given, Flags defaults to zero.
Reviewers: atanasyan
Reviewed By: atanasyan
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D3213
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205173 91177308-0d34-0410-b5e6-96231b3b80d8
Previously, MinGW OS was Triple::MinGW and Cygwin was Triple::Cygwin
and now it is Triple::Win32 with Environment being GNU or Cygwin.
So,
TheTriple.getOS() == Triple::Win32
is replaced by
TheTriple.isWindowsMSVCEnvironment()
and
(TheTriple.getOS() == Triple::MinGW32 || TheTriple.getOS() == Triple::Cygwin)
is replaced by
TheTriple.isOSCygMing()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205170 91177308-0d34-0410-b5e6-96231b3b80d8
is not a pattern to lower this with clever instructions that zero the
register, so restrict the zero immediate legality special case to f64
and f32 (the only two sizes which fmov seems to directly support). Fixes
backend errors when building code such as libxml.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205161 91177308-0d34-0410-b5e6-96231b3b80d8
There is no direct AVX instruction to convert to unsigned. I have some ideas
how we may be able to do this with three vector instructions but the current
backend just bails on this to get it scalarized.
See the comment why we need to adjust the cost returned by BasicTTI.
The test is a bit roundabout (and checks assembly rather than bit code) because
I'd like it to work even if at some point we could vectorize this conversion.
Fixes <rdar://problem/16371920>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205159 91177308-0d34-0410-b5e6-96231b3b80d8
When expanding EXTRACT_VECTOR_ELT and EXTRACT_SUBVECTOR using
SelectionDAGLegalize::ExpandExtractFromVectorThroughStack, we store the entire
vector and then load the piece we want. This is fine in isolation, but
generating a new store (and corresponding stack slot) for each extraction ends
up producing code of poor quality. When we scalarize a vector operation (using
SelectionDAG::UnrollVectorOp for example) we generate one EXTRACT_VECTOR_ELT
for each element in the vector. This used to generate one stored copy of the
vector for each element in the vector. Now we search the uses of the vector for
a suitable store before generating a new one, which results in much more
efficient scalarization code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205153 91177308-0d34-0410-b5e6-96231b3b80d8
sitofp from v2i32 to v2f64 ends up generating a SIGN_EXTEND_INREG v2i64 node
(and similarly for v2i16 and v2i8). Even though there are no sign-extension (or
algebraic shifts) for v2i64 types, we can handle v2i32 sign extensions by
converting two and from v2i64. The small trick necessary here is to shift the
i32 elements into the right lanes before the i32 -> f64 step. This is because
of the big Endian nature of the system, we need the i32 portion in the high
word of the i64 elements.
For v2i16 and v2i8 we can do the same, but we first use the default Altivec
shift-based expansion from v2i16 or v2i8 to v2i32 (by casting to v4i32) and
then apply the above procedure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205146 91177308-0d34-0410-b5e6-96231b3b80d8
parameters rather than runtime parameters.
There is only one user of these parameters and they are compile time for
that user. Making these compile time seems to better reflect their
intended usage as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205143 91177308-0d34-0410-b5e6-96231b3b80d8
This is a necessary step to lifting some of its configuration into
template parameters rather than runtime parameters.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205140 91177308-0d34-0410-b5e6-96231b3b80d8
That causes references to them to be weak references which can collapse
to null if no definition is provided. We call these functions
unconditionally, so a definition *must* be provided. Make the
definitions provided in the .cpp file weak by re-declaring them as weak
just prior to defining them. This should keep compilers which cannot
attach the weak attribute to the definition happy while actually
resolving the symbols correctly during the link.
You might ask yourself upon reading this commit log: how did *any* of
this work before? Well, fun story. It turns out we have some code in
Support (BumpPtrAllocator) which both uses virtual dispatch and has
out-of-line vtables used by that virtual dispatch. If you move the
virtual dispatch into its header in *just* the right way, the optimizer
gets to devirtualize, and remove all references to the vtable. Then the
sad part: the references to this one vtable were the only strong symbol
uses in the support library for llvm-tblgen AFAICT. At least, after
doing something just like this, these symbols stopped getting their weak
definition and random calls to them would segfault instead.
Yay software.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205137 91177308-0d34-0410-b5e6-96231b3b80d8
StringRef::lower() returns a std::string. Better yet, we can now stop
thinking about what it returns and write 'auto'. It does the right
thing. =]
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205135 91177308-0d34-0410-b5e6-96231b3b80d8
It was doing functional but highly suspect operations on bools due to
the more limited shifting operands supported by memory instructions.
Should fix some MSVC warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205134 91177308-0d34-0410-b5e6-96231b3b80d8
This is causing the ARM build-bots to fail since they only include
the ARM backend and can't create an ARM64 target.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205132 91177308-0d34-0410-b5e6-96231b3b80d8
Actually, mostly only those in the top-level directory that already
had a "virtual" attached. But it's the thought that counts and it's
been a long day.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205131 91177308-0d34-0410-b5e6-96231b3b80d8
If the environment is unknown and no object file is provided, then assume an
"MSVC" environment, otherwise, set the environment to the object file format.
In the case that we have a known environment but a non-native file format for
Windows (COFF) which is used for MCJIT, then append the custom file format to
the triple as an additional component.
This fixes the MCJIT tests on Windows.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205130 91177308-0d34-0410-b5e6-96231b3b80d8
FYI, !isWindowsGNUEnvironment() is insufficient. It missed cygwin.
FIXME: The name "isTargetWindows" should be fixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205124 91177308-0d34-0410-b5e6-96231b3b80d8
Patch by Tobias Güntner.
I tried to write a test, but the only difference is the Changed value that
gets returned. It can be tested with "opt -debug-pass=Executions -functionattrs,
but that doesn't seem worth it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205121 91177308-0d34-0410-b5e6-96231b3b80d8
This will fix cross-compiling buildbots (e.g. cygwin). This is in the same vein
as SVN r205070. Apply this to fix the cross-compiling scenario, even though the
preferred solution is to update the build system to normalize the embedded
triple rather than perform this at runtime every time. This is meant to tide us
over until that approach is fleshed out and applied.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205120 91177308-0d34-0410-b5e6-96231b3b80d8
The ARM64 backend uses it only as a container to keep an MCLOHType and
Arguments around so give it its own little copy. The other functionality
isn't used and we had a crazy method specialization hack in place to
keep it working. Unfortunately that was incompatible with MSVC.
Also range-ify a couple of loops while at it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205114 91177308-0d34-0410-b5e6-96231b3b80d8
v2i64 is a legal type under VSX, however we don't have native vector
comparisons. We can handle eq/ne by casting it to an Altivec type, but
everything else must be expanded.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205106 91177308-0d34-0410-b5e6-96231b3b80d8
When LLVM is not built with zlib, nocompression.s will test
for the error message. But this test case will cause breakage
because the exit code is non-zero. This commit fix this issue
by adding "not" to the command.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205102 91177308-0d34-0410-b5e6-96231b3b80d8
The vector divide and sqrt instructions have high latencies, and the scalar
comparisons are like all of the others. On the P7, permutations take an extra
cycle over purely-simple vector ops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205096 91177308-0d34-0410-b5e6-96231b3b80d8
Issue subject: Crash using integrated assembler with immediate arithmetic
Fix description:
Expressions like 'cmp r0, #(l1 - l2) >> 3' could not be evaluated on asm parsing stage,
since it is impossible to resolve labels on this stage. In the end of stage we still have
expression (MCExpr).
Then, when we want to encode it, we expect it to be an immediate, but it still an expression.
Patch introduces a Fixup (MCFixup instance), that is processed after main encoding stage.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205094 91177308-0d34-0410-b5e6-96231b3b80d8
