Summary:
The main complexity in adding symbol records is that we need to
"relocate" all the type indices. Type indices do not have anything like
relocations, an opaque data structure describing where to find existing
type indices for fixups. The linker just has to "know" where the type
references are in the symbol records. I added an overload of
`discoverTypeIndices` that works on symbol records, and it seems to be
able to link the standard library.
Reviewers: zturner, ruiu
Subscribers: llvm-commits, hiraditya
Differential Revision: https://reviews.llvm.org/D34432
llvm-svn: 305933
Define target hook isReallyTriviallyReMaterializable() to explicitly specify
PowerPC instructions that are trivially rematerializable. This will allow
the MachineLICM pass to accurately identify PPC instructions that should always
be hoisted.
Differential Revision: https://reviews.llvm.org/D34255
llvm-svn: 305932
I don't think there's any visible difference from having the wrong layout
for the 32-bit case at this point, but that could change in the future.
llvm-svn: 305931
If we want to make sure that a particular string is not in an output,
the regular way of doing it is to add `-NOT` prefix instead of checking
if FileCheck resulted in an error.
Differential Revision: https://reviews.llvm.org/D34435
llvm-svn: 305930
This works around a strange interaction with Authenticode signatures,
in which a signed PE executable with {Major,Minor}LinkerVersion = 0.0
fails to validate on Windows 7 (but is OK on Windows 10). Setting the
linker version to 14.0 (which is what VS2015 outputs) makes it work
again.
Patch by Simon Tatham <simon.tatham@arm.com>.
llvm-svn: 305929
In running some internal vectorcall tests in 32 bit mode, we discovered that the
behavior I'd previously implemented for x64 (and applied to x32) regarding the
assignment of SSE registers was incorrect. See spec here:
https://msdn.microsoft.com/en-us/library/dn375768.aspx
My previous implementation applied register argument position from the x64
version to both. This isn't correct for x86, so this removes and refactors that
section. Additionally, it corrects the integer/int-pointer assignments. Unlike
x64, x86 permits integers to be assigned independent of position.
Finally, the code for 32 bit was cleaned up a little to clarify the intent,
as well as given a descriptive comment.
Differential Revision: https://reviews.llvm.org/D34455
llvm-svn: 305928
Summary:
I noticed that passing known bits across these intrinsics isn't great at capturing the information we really know. Turning known bits of the input into known bits of a count output isn't able to convey a lot of what we really know.
This patch adds range metadata to these intrinsics based on the known bits.
Currently the patch punts if we already have range metadata present.
Reviewers: spatel, RKSimon, davide, majnemer
Reviewed By: RKSimon
Subscribers: sanjoy, hfinkel, llvm-commits
Differential Revision: https://reviews.llvm.org/D32582
llvm-svn: 305927
Summary:
Previously this folding had no checks to see if it was going to result in less instructions. This was pointed out during the review of D34184
This patch adds code to count how many instructions its going to create vs how many its going to remove so we can make a proper decision.
Reviewers: spatel, majnemer
Reviewed By: spatel
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D34437
llvm-svn: 305926
Summary:
AFAICT compiler-rt doesn't have a function that would return 'good' random
bytes to seed a PRNG. Currently, the `SizeClassAllocator64` uses addresses
returned by `mmap` to seed its PRNG, which is not ideal, and
`SizeClassAllocator32` doesn't benefit from the entropy offered by its 64-bit
counterpart address space, so right now it has nothing. This function aims at
solving this, allowing to implement good 32-bit chunk randomization. Scudo also
has a function that does this for Cookie purposes, which would go away in a
later CL once this lands.
This function will try the `getrandom` syscall if available, and fallback to
`/dev/urandom` if not.
Unfortunately, I do not have a way to implement and test a Mac and Windows
version, so those are unimplemented as of now. Note that `kRandomShuffleChunks`
is only used on Linux for now.
Reviewers: alekseyshl
Reviewed By: alekseyshl
Subscribers: zturner, rnk, llvm-commits, kubamracek
Differential Revision: https://reviews.llvm.org/D34412
llvm-svn: 305922
The --exclude-libs option is not a popular option, but at least some
programs in Android depend on it, so it's worth to support it.
Differential Revision: https://reviews.llvm.org/D34422
llvm-svn: 305920
Added test file for ARMv8.1 LSE Atomics that I forgot to include in
commit r305893.
Patch by Ananth Jasty.
Differential Revision: https://reviews.llvm.org/D33586
Change-Id: Ic1ad8ed87c1b584c4c791b459a686c866a3c3087
llvm-svn: 305918
Move GlobalAddress Offset decomposition from initial match into
comparision check and removing the possibility of constructing a new
offseted global address when examining addresses.
llvm-svn: 305917
Summary:
This is the same as Inline, except it does not imply all empty
functions are merged: with this style, empty functions are merged only
if they also match the 'inline' criteria (i.e. defined in a class).
This is helpful to avoid inlining functions in implementations files.
Reviewers: djasper, krasimir
Reviewed By: djasper
Subscribers: klimek, rengolin, cfe-commits
Differential Revision: https://reviews.llvm.org/D34399
llvm-svn: 305912
"specializationOf" relation if they pseudo-override a type in the base template
This commit fixes an issue where Xcode's renaming engine couldn't find the
reference to the second occurrence of "InnerClass" in this example:
template<typename T> struct Ts { template<typename U> struct InnerClass { }; };
template<> struct Ts<int> {
template<typename U> struct InnerClass; // This occurrence wasn't renamed
};
rdar://31884960
Differential Revision: https://reviews.llvm.org/D34392
llvm-svn: 305911
While a function body is being parsed, the function declaration is not considered
as a definition because it does not have a body yet. In some cases it leads to
incorrect interpretation, the case is presented in
https://bugs.llvm.org/show_bug.cgi?id=14785:
```
template<typename T> struct Somewhat {
void internal() const {}
friend void operator+(int const &, Somewhat<T> const &) {}
};
void operator+(int const &, Somewhat<char> const &x) { x.internal(); }
```
When statement `x.internal()` in the body of global `operator+` is parsed, the type
of `x` must be completed, so the instantiation of `Somewhat<char>` is started. It
instantiates the declaration of `operator+` defined inline, and makes a check for
redefinition. The check does not detect another definition because the declaration
of `operator+` is still not defining as does not have a body yet.
To solves this problem the function `isThisDeclarationADefinition` considers
a function declaration as a definition if it has flag `WillHaveBody` set.
This change fixes PR14785.
Differential Revision: https://reviews.llvm.org/D30375
This is a recommit of 305379, reverted in 305381, with small changes.
llvm-svn: 305903
This makes the analyzer around 10% slower by default,
allowing it to find deeper bugs.
Default values for the following -analyzer-config change:
max-nodes: 150000 -> 225000;
max-inlinable-size: 50 -> 100.
rdar://problem/32539666
Differential Revision: https://reviews.llvm.org/D34277
llvm-svn: 305900
Change some reinterpret_casts to c-style casts due to template instantiation
restrictions and build breakage due to missing paranthesises.
llvm-svn: 305899
Add support for new methods that were added in macOS High Sierra & iOS 11
and require a localized string.
Patch by Kulpreet Chilana!
rdar://problem/32795210
Differential Revision: https://reviews.llvm.org/D34266
llvm-svn: 305896
Implemented support to AArch64 codegen for ARMv8.1 Large System
Extensions atomic instructions. Where supported, these instructions can
provide atomic operations with higher performance.
Currently supported operations include: fetch_add, fetch_or, fetch_xor,
fetch_smin, fetch_min/max (signed and unsigned), swap, and
compare_exchange.
This implementation implies sequential-consistency ordering, more
relaxed ordering is under development.
Subtarget->hasLSE is currently supported for Cavium ThunderX2T99.
Patch by Ananth Jasty.
Differential Revision: https://reviews.llvm.org/D33586
Change-Id: I82f6d3d64255622791ceb0715b7ab9f4dc4d4b2c
llvm-svn: 305893
Summary:
This function retries an operation if it was interrupted by a signal
(failed with EINTR). It's inspired by the TEMP_FAILURE_RETRY macro in
glibc, but I've turned that into a template function. I've also added a
fail-value argument, to enable the function to be used with e.g.
fopen(3), which is documented to fail for any reason that open(2) can
fail (which includes EINTR).
The main user of this function will be lldb, but there were also a
couple of uses within llvm that I could simplify using this function.
Reviewers: zturner, silvas, joerg
Subscribers: mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D33895
llvm-svn: 305892
deployment target if the SDK is newer than the system
This commit also reverts follow-up commits r305680 and r305685 that have
buildbot fixes.
The change in r305678 wasn't correct because it relied on
`llvm::sys::getProcessTriple`, which uses a pre-configured OS version. We should
lookup the actual macOS version of the system on which the compiler is running.
llvm-svn: 305891
There should be at most a single kill flag for the
promoted operand between the store/load pair.
Discussed in https://reviews.llvm.org/D34402.
llvm-svn: 305889
This patch adds one more condition in selection DINS/INS
instruction, which fixes MultiSource/Applications/JM/ldecod/
for mips32r2 (and mips64r2 n32 abi).
Differential Revision: https://reviews.llvm.org/D33725
llvm-svn: 305888
Converts to range-loop usage in machine scheduler.
This makes the code neater and easier to read,
and also keeps pace of the machine scheduler
implementation with C++11 features.
Reviewed by: Matthias Braun
Differential Revision: https://reviews.llvm.org/D34320
llvm-svn: 305887
Summary: Previously there were two separate pseudo instruction for SDWA on VI and on GFX9. Created one pseudo instruction that is union of both of them. Added verifier to check that operands conform either VI or GFX9.
Reviewers: dp, arsenm, vpykhtin
Subscribers: kzhuravl, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye, artem.tamazov
Differential Revision: https://reviews.llvm.org/D34026
llvm-svn: 305886
Summary:
This patch updates promoteLoadFromStore to use the store MachineOperand as the
source operand of the of the new instruction instead of creating a new
register MachineOperand. This way, the existing register flags are
preserved.
This fixes PR33468 (https://bugs.llvm.org/show_bug.cgi?id=33468).
Reviewers: MatzeB, t.p.northover, junbuml
Reviewed By: MatzeB
Subscribers: aemerson, rengolin, javed.absar, kristof.beyls, llvm-commits
Differential Revision: https://reviews.llvm.org/D34402
llvm-svn: 305885
Add support for combining a build vector to a shuffle.
When the build vector is of extracted elements from 2 vectors (vec1, vec2) where vec2 is 2 times smaller than vec1.
llvm-svn: 305883
MulOpsInlineThreshold option of SCEV is defaulted to 1000, which is inadequately high.
When constructing SCEVs of expressions like:
x1 = a * a
x2 = x1 * x1
x3 = x2 * x2
...
We actually have huge SCEVs with max allowed amount of operands inlined.
Such expressions are easy to get from unrolling of loops looking like
x = a
for (i = 0; i < n; i++)
x = x * x
Or more tricky cases where big powers are involved. If some non-linear analysis
tries to work with a SCEV that has 1000 operands, it may lead to excessively long
compilation. The attached test does not pass within 1 minute with default threshold.
This patch decreases its default value to 32, which looks much more reasonable if we
use analyzes with complexity O(N^2) or O(N^3) working with SCEV.
Differential Revision: https://reviews.llvm.org/D34397
llvm-svn: 305882
Reid Kleckner