Commit Graph

189254 Commits

Author SHA1 Message Date
David Majnemer b1296ec0fd InstCombine: Infer nuw for multiplies
A multiply cannot unsigned wrap if there are bitwidth, or more, leading
zero bits between the two operands.

llvm-svn: 224849
2014-12-26 09:50:35 +00:00
David Majnemer a55027f68a ValueTracking: Small cleanup in ComputeNumSignBits
Constant contains the isAllOnesValue and isNullValue predicates, not
ConstantInt.

llvm-svn: 224848
2014-12-26 09:20:17 +00:00
David Majnemer 54c2ca2539 InstCombe: Infer nsw for multiplies
We already utilize this logic for reducing overflow intrinsics, it makes
sense to reuse it for normal multiplies as well.

llvm-svn: 224847
2014-12-26 09:10:14 +00:00
Craig Topper ee9eef2fd8 Teach disassembler to handle illegal immediates on (v)cmpps/pd/ss/sd instructions. Instead of rejecting we'll just generate the _alt forms that don't try to alter the mnemonic. While I'm here, merge some common code in the Instruction printers for the condition code replacement and fix the mask on SSE to be 3-bits instead of 4.
llvm-svn: 224846
2014-12-26 06:36:28 +00:00
Craig Topper 2e44492b1d Use MCPhysReg for table of register encodings.
llvm-svn: 224845
2014-12-26 06:36:23 +00:00
David Majnemer e60488a4ae Sema: Qualify getPrintable's Expr argument
getPrintable has an overload which takes a bool.  This means that const
qualified Exprs would get forwarded to the bool overload instead of the
Expr overload.

llvm-svn: 224844
2014-12-26 06:06:56 +00:00
David Majnemer 3e7743ed2c WIP
llvm-svn: 224843
2014-12-26 06:06:53 +00:00
Hal Finkel 0c505b08a5 [PowerPC] [FastISel] i1 constants must be zero extended
When materializing constant i1 values, they must be zero extended. We represent
i1 values as [0, 1], not [0, -1], in i32 registers. As it turns out, this code
path was dead for i1 values prior to r216006 (which is why this did not manifest in
miscompiles until recently).

Fixes -O0 self-hosting on PPC64/Linux.

llvm-svn: 224842
2014-12-25 23:08:25 +00:00
Evgeniy Stepanov b723834d82 [sanitizer] Tweak sancov.py output.
llvm-svn: 224841
2014-12-25 16:03:24 +00:00
Evgeniy Stepanov 01b922d9f2 [sanitizer] sancov.py: print status to stderr
llvm-svn: 224840
2014-12-25 16:01:09 +00:00
Evgeniy Stepanov 300d29a75d [asan] Disable __sanitizer_cov_dump registration on Windows.
Looks like we can't use atexit() during ASan initialization on Windows.

llvm-svn: 224839
2014-12-25 15:11:00 +00:00
Evgeniy Stepanov be9a53fec6 [asan] Allow enabling coverage at activation.
llvm-svn: 224838
2014-12-25 14:26:45 +00:00
Timur Iskhodzhanov fe5c5b98b3 Simplify allocator_returns_null.cc test
llvm-svn: 224837
2014-12-25 13:03:58 +00:00
Yaron Keren 2f5ec2f2ba Initialize BackendConsumer::Context in constructor.
llvm-svn: 224836
2014-12-25 12:21:56 +00:00
Yaron Keren 5fb94242bb Initialize CodeGeneratorImpl::Ctx in constructor.
llvm-svn: 224835
2014-12-25 11:38:15 +00:00
Dmitry Vyukov bda655004e tsan: fix trace initialization during thread id reuse
The current code leaves the first event in the trace part uninitialized
(from the previous thread). It can cause unpredictable behavior
during stack/mutexset restoration.
Initialize the first event to a fake harmless memory access.

llvm-svn: 224834
2014-12-25 10:32:25 +00:00
David Majnemer 25b383ac66 Silence GCC's -Wparentheses warning
No functionality change intended.

llvm-svn: 224833
2014-12-25 10:03:23 +00:00
Elena Demikhovsky 3d13f1c82c Documentation for Masked Load and Store intrinsics.
llvm-svn: 224832
2014-12-25 09:29:13 +00:00
Simon Atanasyan e473df2bf6 [Mips] Replace stderr output by the `llvm_unreachable` call
If a regular symbol has microMIPS-bit we need to stop linking. Now the
LLD does not check the `applyRelocation` return value and continues
linking anyway. As a temporary workaround use the `llvm_unreachable`
call to stop the linker.

llvm-svn: 224831
2014-12-25 09:23:47 +00:00
Simon Atanasyan 9af53992c8 [Mips] Make the test more tolerant to the linker output order
The LLD output in the YAML mode depends on LLD_RUN_ROUNDTRIP_TEST
environment variable. Do not check unimportant YAML items like section-name.

llvm-svn: 224830
2014-12-25 09:23:37 +00:00
Elena Demikhovsky fb81b93e17 Masked Load/Store - Changed the order of parameters in intrinsics.
No functional changes.
The documentation is coming.

llvm-svn: 224829
2014-12-25 07:49:20 +00:00
David Majnemer 2913eca4e2 CodeGen: Error on redefinitions instead of asserting
It's possible to have a prior definition of a symbol in module asm.
Raise an error instead of crashing.

llvm-svn: 224828
2014-12-24 23:06:55 +00:00
David Majnemer 8e92dfee20 CodeGen: Allow aliases to be overridden by variables
llvm-svn: 224827
2014-12-24 22:44:29 +00:00
Simon Atanasyan 45010c92a8 [Mips] Support linking of microMIPS 32-bit code
The change is rather large but mainly it just adds handling of new relocations,
PLT entries etc.

llvm-svn: 224826
2014-12-24 21:04:05 +00:00
Saleem Abdulrasool 747ec2dda3 MC: address some comments in deprecation checks
Bob Wilson pointed out the unnecessary checks that had been committed to the
instruction check predicates.  The check was meant to ensure that the check was
not accidentally applied to non-ARM instructions.  This is better served as an
assertion rather than a condition check.

llvm-svn: 224825
2014-12-24 18:40:42 +00:00
Evgeniy Stepanov cb2f6d4314 [asan] Support ASAN_ACTIVATION_OPTIONS.
This is mostly useful for testing, as the only other way of specifying
activation options (Android system property) is system-wide and affects
concurrently running tests.

llvm-svn: 224824
2014-12-24 16:58:50 +00:00
Timur Iskhodzhanov ced288f822 [ASan/Win] Bandaid fix for PR22025 -- deadlocks when creating suspended threads
llvm-svn: 224823
2014-12-24 16:14:16 +00:00
Evgeniy Stepanov 5a09b2cdeb [sanitizer] Disable InternalMmapWithOffset test on OSX.
llvm-svn: 224822
2014-12-24 13:59:35 +00:00
Evgeniy Stepanov ca9e045570 [sanitizer] Fix off-by-8x in direct coverage.
File mapping offset was calculated by offsetting (uptr *) instead of (char *).

llvm-svn: 224821
2014-12-24 13:57:11 +00:00
Evgeniy Stepanov 40b16f4037 [sanitizer] Disable InternalMmapWithOffset test on Windows.
llvm-svn: 224820
2014-12-24 13:05:21 +00:00
Evgeniy Stepanov 98211121ab [sanitizer] mmap2 syscall works with 4096-byte units instead of bytes.
Ouch.

llvm-svn: 224819
2014-12-24 12:58:09 +00:00
Evgeniy Stepanov 0b7c1cf1e0 [asan] Disable one test on Android.
It used to pass by chance and started failing on recent Android builds.

llvm-svn: 224818
2014-12-24 12:23:15 +00:00
Simon Atanasyan 926f79f44f [Mips] Join two if statements
No functional changes.

llvm-svn: 224817
2014-12-24 12:19:42 +00:00
Simon Atanasyan 1a978ed9ac [Mips] Make the comment more descriptive
No functional changes.

llvm-svn: 224816
2014-12-24 12:19:36 +00:00
Simon Atanasyan 4360be5d26 [Mips] Factor out the code checks a symbol's binding
No functional changes.

llvm-svn: 224815
2014-12-24 12:19:30 +00:00
Simon Atanasyan eab5dc815a [Mips] Rename the function s/readAddend/getAddend/
No functional changes.

llvm-svn: 224814
2014-12-24 12:19:24 +00:00
Simon Atanasyan 375f07a919 [Mips] Use OR operation to set the microMIPS bit
llvm-svn: 224813
2014-12-24 12:19:18 +00:00
Jay Foad 4195dff0fb [ASan] Fix asan_preload_test-2 on PowerPC64 Linux
Summary:
This test failed because clang compiled the call to memset() into a
single sth instruction, instead of a call. Fix it by using write() instead
of memset().

Reviewers: kcc, samsonov, garious, eugenis

Reviewed By: eugenis

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6776

llvm-svn: 224812
2014-12-24 11:48:40 +00:00
David Majnemer 58cb80c940 MC: Label definitions are permitted after .set directives
.set directives may be overridden by other .set directives as well as
label definitions.

This fixes PR22019.

llvm-svn: 224811
2014-12-24 10:27:50 +00:00
Saleem Abdulrasool 4d6ed7c778 IAS: correct debug line info for asm macros
Correct the line information generation for preprocessed assembly.  Although we
tracked the source information for the macro instantiation, we failed to account
for the fact that we were instantiating a macro, which is populated into a new
buffer and that the line information would be relative to the definition rather
than the actual instantiation location.  This could cause the line number
associated with the statement to be very high due to wrapping of the difference
calculated for the preprocessor line information emitted into the stream.
Properly calculate the line for the macro instantiation, referencing the line
where the macro is actually used as GCC/gas do.

The test case uses x86, though the same problem exists on any other target using
the LLVM IAS.

llvm-svn: 224810
2014-12-24 06:32:43 +00:00
Craig Topper b86338f7b2 [X86] Remove the single AdSize indicator and replace it with separate AdSize16/32/64 flags.
This removes a hardcoded list of instructions in the CodeEmitter. Eventually I intend to remove the predicates on the affected instructions since in any given mode two of them are valid if we supported addr32/addr16 prefixes in the assembler.

llvm-svn: 224809
2014-12-24 06:05:22 +00:00
David Majnemer 0fe246e079 MC: Don't emit .no_dead_strip on targets which don't support it
llvm-svn: 224808
2014-12-24 04:11:42 +00:00
Matthias Braun 51ca510094 LiveInterval: Remove accidentally committed debug code.
llvm-svn: 224807
2014-12-24 02:35:07 +00:00
Matthias Braun dbcca0dbb4 LiveInterval: Introduce createMainRangeFromSubranges().
This function constructs the main liverange by merging all subranges if
subregister liveness tracking is available. This should be slightly
faster to compute instead of performing the liveness calculation again
for the main range. More importantly it avoids cases where the main
liverange would cover positions where no subrange was live. These cases
happened for partial definitions where the actual defined part was dead
and only the undefined parts used later.

The register coalescing requires that every part covered by the main
live range has at least one subrange live.

I also expect this function to become usefull later for places where the
subranges are modified in a way that it is hard to correctly fix the
main liverange in the machine scheduler, we can simply reconstruct it
from subranges then.

llvm-svn: 224806
2014-12-24 02:11:51 +00:00
Matthias Braun 7030dda8d5 RegisterCoalescer: With subrange liveness there may be no RedefVNI for unused lanes.
llvm-svn: 224805
2014-12-24 02:11:48 +00:00
Matthias Braun 36768c684f LiveRangeEdit: Check for completely empy subranges after removing ValNos.
Completely empty subranges are not allowed and must be removed when
subreg liveness is enabled.

llvm-svn: 224804
2014-12-24 02:11:46 +00:00
Matthias Braun f603c88d13 LiveIntervalAnalysis: Fix performance bug that I introduced in r224663.
Without a reference the code did not remember when moving the iterators
of the subranges/registerunit ranges forward and instead would scan from
the beginning again at the next position.

llvm-svn: 224803
2014-12-24 02:11:43 +00:00
Peter Zotov 283e20219e [OCaml] PR21901: Update tests.
This finishes the fix partially applied by r224782.

llvm-svn: 224802
2014-12-24 01:58:45 +00:00
Peter Zotov af6535bf12 [OCaml] Expose Llvm_executionengine.get_{global_value,function}_address.
Patch by Ramkumar Ramachandra <artagnon@gmail.com>.

Also remove Llvm_executionengine.get_pointer_to_global, as it
is actually deprecated and didn't appear in a stable release.

llvm-svn: 224801
2014-12-24 01:52:51 +00:00
Chandler Carruth ffb7ce56a6 [SROA] Update the documentation and names for accessing the slices
within a partition of an alloca in SROA.

This reflects the fact that the organization of the slices isn't really
ideal for analysis, but is the naive way in which the slices are
available while we're processing them in the core partitioning
algorithm.

It is possible we could improve matters, and I've left a FIXME with
one of my ideas for how to do this, but it is a lot of work, the benefit
is somewhat minor, and it isn't clear that it would be strictly better.
=/ Not really satisfying, but I'm out of really good ideas.

This also improves one place where the debug logging failed to mark some
split partitions. Now we log in one place, slightly later, and with
accurate information about whether the slice is split by the partition
being rewritten.

llvm-svn: 224800
2014-12-24 01:48:09 +00:00