oota-llvm.git
9 years agoReduce duplication in MCSymbol Name handling. NFC>
Pete Cooper [Tue, 9 Jun 2015 20:41:08 +0000 (20:41 +0000)]
Reduce duplication in MCSymbol Name handling.  NFC>

Based on feedback to r239428 by David Blaikie, use const_cast to reduce
duplication of the const and non-const versions of getNameEntryPtr.

Also have that method return the pointer to the name directly instead
of users having to then get the name from the union.

Finally, add a FIXME that we should use a static_assert once available in
the new operator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239429 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoMake MCSymbol::Name be a union of uint64_t and a pointer.
Pete Cooper [Tue, 9 Jun 2015 19:56:05 +0000 (19:56 +0000)]
Make MCSymbol::Name be a union of uint64_t and a pointer.

This should hopefully fix the 32-bit bots which were allocating space for a pointer
but needed to be aligned to 64-bits.

Now we allocate enough space for a uint64_t and a pointer and cast to the appropriate storage

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239428 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoRemove DisableTailCalls from TargetOptions and the code in resetTargetOptions
Akira Hatanaka [Tue, 9 Jun 2015 19:07:19 +0000 (19:07 +0000)]
Remove DisableTailCalls from TargetOptions and the code in resetTargetOptions
that was resetting it.

Remove the uses of DisableTailCalls in subclasses of TargetLowering and use
the value of function attribute "disable-tail-calls" instead. Also,
unconditionally add pass TailCallElim to the pipeline and check the function
attribute at the start of runOnFunction to disable the pass on a per-function
basis.

This is part of the work to remove TargetMachine::resetTargetOptions, and since
DisableTailCalls was the last non-fast-math option that was being reset in that
function, we should be able to remove the function entirely after the work to
propagate IR-level fast-math flags to DAG nodes is completed.

Out-of-tree users should remove the uses of DisableTailCalls and make changes
to attach attribute "disable-tail-calls"="true" or "false" to the functions in
the IR.

rdar://problem/13752163

Differential Revision: http://reviews.llvm.org/D10099

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239427 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[bpf] enable BPF backend in autoconf build
Alexei Starovoitov [Tue, 9 Jun 2015 18:53:30 +0000 (18:53 +0000)]
[bpf] enable BPF backend in autoconf build

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239425 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoChange from alignof to llvm::alignOf to appease Visual Studio
Pete Cooper [Tue, 9 Jun 2015 18:50:18 +0000 (18:50 +0000)]
Change from alignof to llvm::alignOf to appease Visual Studio

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239424 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoAllocate space for MCSymbol::Name only if required.
Pete Cooper [Tue, 9 Jun 2015 18:36:13 +0000 (18:36 +0000)]
Allocate space for MCSymbol::Name only if required.

Similarly to User which allocates a number of Use's prior to the this pointer,
allocate space for the Name* for MCSymbol only when we need a name.

Given that an MCSymbol is 48-bytes on 64-bit systems, this saves a decent % of space.

Given the verify_uselistorder test case with debug info and llc, 50k symbols have names
out of 700k so this optimises for the common case of temporary unnamed symbols.

Reviewed by David Blaikie.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239423 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoMergeFunctions: Don't replace a weak function use by another equivalent weak function
Arnold Schwaighofer [Tue, 9 Jun 2015 18:19:17 +0000 (18:19 +0000)]
MergeFunctions: Don't replace a weak function use by another equivalent weak function

We don't know whether the weak functions definition is the definitive definition.

rdar://21303727

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239422 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoRevert "[DWARF] Fix a few corner cases in expression emission"
David Blaikie [Tue, 9 Jun 2015 18:01:51 +0000 (18:01 +0000)]
Revert "[DWARF] Fix a few corner cases in expression emission"

This reverts commit r239380 due to apparently GDB regressions:
http://lab.llvm.org:8011/builders/clang-x86_64-ubuntu-gdb-75/builds/22562

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239420 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoThe constant initialization for globals in NVPTX is generated as an
Samuel Antao [Tue, 9 Jun 2015 16:29:34 +0000 (16:29 +0000)]
The constant initialization for globals in NVPTX is generated as an
array of bytes. The generation of this byte arrays was expecting
the host to be little endian, which prevents big endian hosts to be
used in the generation of the PTX code. This patch fixes the
problem by changing the way the bytes are extracted so that it
works for either little and big endian.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239412 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoAdd more wrappers for symbol APIs to the C API.
Eli Bendersky [Tue, 9 Jun 2015 15:57:30 +0000 (15:57 +0000)]
Add more wrappers for symbol APIs to the C API.

This represents some of the functionality we expose in the llvmlite Python
binding.

Patch by Antoine Pitrou

Differential Revision: http://reviews.llvm.org/D10222

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239411 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[bpf] make BPF backend non-experimental
Alexei Starovoitov [Tue, 9 Jun 2015 15:46:00 +0000 (15:46 +0000)]
[bpf] make BPF backend non-experimental

only cmake build change. autoconf build and docs will follow

email thread:
http://lists.cs.uiuc.edu/pipermail/llvmdev/2015-June/thread.html#86523

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239410 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoRemove object_error::success and use std::error_code() instead
Rui Ueyama [Tue, 9 Jun 2015 15:20:42 +0000 (15:20 +0000)]
Remove object_error::success and use std::error_code() instead

make_error_code(object_error) is slow because object::object_category()
uses a ManagedStatic variable. But the real problem is that the function is
called too frequently. This patch uses std::error_code() instead of
object_error::success. In most cases, we return "success", so this patch
reduces number of function calls to that function.

http://reviews.llvm.org/D10333

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239409 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoRecommit "[mips] [IAS] Restore STI.FeatureBits in .set pop." (r239144).
Toma Tabacu [Tue, 9 Jun 2015 13:33:26 +0000 (13:33 +0000)]
Recommit "[mips] [IAS] Restore STI.FeatureBits in .set pop." (r239144).

Specified the llvm namespace for the 2 calls to make_unique() which caused
compilation errors in Visual Studio 2013.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239405 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoX86-MPX: Implemented encoding for MPX instructions.
Elena Demikhovsky [Tue, 9 Jun 2015 13:02:10 +0000 (13:02 +0000)]
X86-MPX: Implemented encoding for MPX instructions.
Added encoding tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239403 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoRemoving spurious semi colons; NFC.
Aaron Ballman [Tue, 9 Jun 2015 12:03:46 +0000 (12:03 +0000)]
Removing spurious semi colons; NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239399 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoRevert "[mips] [IAS] Add support for BNE and BEQ with an immediate operand." (r239396).
Toma Tabacu [Tue, 9 Jun 2015 10:43:49 +0000 (10:43 +0000)]
Revert "[mips] [IAS] Add support for BNE and BEQ with an immediate operand." (r239396).

It was breaking buildbots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239397 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[mips] [IAS] Add support for BNE and BEQ with an immediate operand.
Toma Tabacu [Tue, 9 Jun 2015 10:34:31 +0000 (10:34 +0000)]
[mips] [IAS] Add support for BNE and BEQ with an immediate operand.

Summary:
For some branches, GAS accepts an immediate instead of the 2nd register operand.
We only implement this for BNE and BEQ for now. Other branch instructions can be added later, if needed.

Reviewers: dsanders

Reviewed By: dsanders

Subscribers: seanbruno, emaste, llvm-commits

Differential Revision: http://reviews.llvm.org/D9666

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239396 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[nvptx] Only support the 'm' inline assembly memory constraint. NFC.
Daniel Sanders [Tue, 9 Jun 2015 10:34:05 +0000 (10:34 +0000)]
[nvptx] Only support the 'm' inline assembly memory constraint. NFC.

Summary:
NVPTX doesn't seem to support any additional constraints. Therefore remove
the target hook.

No functional change intended.

Reviewers: jholewinski

Reviewed By: jholewinski

Subscribers: jholewinski, llvm-commits

Differential Revision: http://reviews.llvm.org/D8209

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239395 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[ADT] Assert that SmallVectorBase::grow_pod() successfully reallocates memory.
Daniel Sanders [Tue, 9 Jun 2015 09:47:46 +0000 (09:47 +0000)]
[ADT] Assert that SmallVectorBase::grow_pod() successfully reallocates memory.

Summary:
If malloc/realloc fails then the SmallVector becomes unusable since begin() and
end() will return NULL. This is unlikely to occur but was the cause of recent
bugpoint test failures on my machine.

It is not clear whether not checking for malloc/realloc failure is a deliberate
decision and adding checks has the potential to impact compiler performance.
Therefore, this patch only adds the check to builds with assertions enabled for
the moment.

Reviewers: bkramer

Reviewed By: bkramer

Subscribers: bkramer, llvm-commits

Differential Revision: http://reviews.llvm.org/D9520

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239392 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoMergeFunctions: Fix gcc warning in condition
Denis Protivensky [Tue, 9 Jun 2015 09:28:37 +0000 (09:28 +0000)]
MergeFunctions: Fix gcc warning in condition

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239391 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agollvm/test/DebugInfo/X86/expressions.ll: %llc_dwarf shouldn't be used with -mtriple...
NAKAMURA Takumi [Tue, 9 Jun 2015 08:03:33 +0000 (08:03 +0000)]
llvm/test/DebugInfo/X86/expressions.ll: %llc_dwarf shouldn't be used with -mtriple, since %llc_dwarf implies the triple.

In this case, use plain "llc".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239390 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoMove X86-only test case to appropriate directory
Keno Fischer [Tue, 9 Jun 2015 02:52:47 +0000 (02:52 +0000)]
Move X86-only test case to appropriate directory

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239384 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[lli] Make the OptLevel (-O=<char>) option accessible to the lazy JIT.
Lang Hames [Tue, 9 Jun 2015 02:43:27 +0000 (02:43 +0000)]
[lli] Make the OptLevel (-O=<char>) option accessible to the lazy JIT.

No test case - this only affects generated code performance.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239383 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[DWARF] Fix a few corner cases in expression emission
Keno Fischer [Tue, 9 Jun 2015 01:53:59 +0000 (01:53 +0000)]
[DWARF] Fix a few corner cases in expression emission

Summary: I noticed an object file with `DW_OP_reg4 DW_OP_breg4 0` as a DWARF expression,
which I traced to a missing break (and `++I`) in this code snippet.
While I was at it, I also added support for a few other corner cases
along the same lines that I could think of.

Test Plan: Hand-crafted test case to exercises these cases is included.

Reviewers: echristo, dblaikie, aprantl

Reviewed By: aprantl

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10302

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239380 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[asan] Prevent __attribute__((annotate)) triggering errors on Darwin
Anna Zaks [Tue, 9 Jun 2015 00:58:08 +0000 (00:58 +0000)]
[asan] Prevent __attribute__((annotate)) triggering errors on Darwin

The following code triggers a fatal error in the compiler instrumentation
of ASan on Darwin because we place the attribute into llvm.metadata section,
which does not have the proper MachO section name.

void foo() __attribute__((annotate("custom")));
void foo() {;}

This commit reorders the checks so that we skip everything in llvm.metadata
first. It also removes the hard failure in case the section name does not
parse. That check will be done lower in the compilation pipeline anyway.

(Reviewed in http://reviews.llvm.org/D9093.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239379 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoImplement computeKnownBits for min/max nodes
Matt Arsenault [Tue, 9 Jun 2015 00:52:41 +0000 (00:52 +0000)]
Implement computeKnownBits for min/max nodes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239378 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoR600: Switch to using generic min / max nodes.
Matt Arsenault [Tue, 9 Jun 2015 00:52:37 +0000 (00:52 +0000)]
R600: Switch to using generic min / max nodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239377 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoMC: Add target hook to control symbol quoting
Matt Arsenault [Tue, 9 Jun 2015 00:31:39 +0000 (00:31 +0000)]
MC: Add target hook to control symbol quoting

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239370 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoFix unused variable warning
Arnold Schwaighofer [Tue, 9 Jun 2015 00:17:40 +0000 (00:17 +0000)]
Fix unused variable warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239369 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[NVPTX] run SROA after NVPTXFavorNonGenericAddrSpaces
Jingyue Wu [Tue, 9 Jun 2015 00:05:56 +0000 (00:05 +0000)]
[NVPTX] run SROA after NVPTXFavorNonGenericAddrSpaces

Summary:
This cleans up most allocas NVPTXLowerKernelArgs emits for byval
parameters.

Test Plan: makes bug21465.ll more stronger to verify no redundant local load/store.

Reviewers: eliben, jholewinski

Reviewed By: eliben, jholewinski

Subscribers: jholewinski, llvm-commits

Differential Revision: http://reviews.llvm.org/D10322

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239368 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoMergeFunctions: Impose a total order on the replacement of functions
Arnold Schwaighofer [Tue, 9 Jun 2015 00:03:29 +0000 (00:03 +0000)]
MergeFunctions: Impose a total order on the replacement of functions

We don't want to replace function A by Function B in one module and Function B
by Function A in another module.

If these functions are marked with linkonce_odr we would end up with a function
stub calling B in one module and a function stub calling A in another module. If
the linker decides to pick these two we will have two stubs calling each other.

rdar://21265586

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239367 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[WinEH] Cache declarations of frame intrinsics
Reid Kleckner [Mon, 8 Jun 2015 22:43:32 +0000 (22:43 +0000)]
[WinEH] Cache declarations of frame intrinsics

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239361 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[MC] Use unsigned for the Kind bitfield in MCSymbol
Reid Kleckner [Mon, 8 Jun 2015 22:12:44 +0000 (22:12 +0000)]
[MC] Use unsigned for the Kind bitfield in MCSymbol

Fixes most of the test suite on Windows with clang-cl.

I'm not sure why the test suite was passing with MSVC 2013. Maybe they
changed their behavior and we are emulating their old sign extension
behavior. I think this deserves more investigation, but I want to green
the bot first.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239357 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoFix clang-cl self-host -Wc++11-narrowing bug
Reid Kleckner [Mon, 8 Jun 2015 21:57:57 +0000 (21:57 +0000)]
Fix clang-cl self-host -Wc++11-narrowing bug

Use unsigned as the underlying storage type of the AMDGPU address space
enum.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239355 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[AArch64] AsmParser should be case insensitive about accepting vector register names.
Ranjeet Singh [Mon, 8 Jun 2015 21:32:16 +0000 (21:32 +0000)]
[AArch64] AsmParser should be case insensitive about accepting vector register names.

Differential Revision: http://reviews.llvm.org/D10320

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239353 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[InstrInfo] Refactor foldOperandImpl to thread through InsertPt. NFC
Keno Fischer [Mon, 8 Jun 2015 20:09:58 +0000 (20:09 +0000)]
[InstrInfo] Refactor foldOperandImpl to thread through InsertPt. NFC

Summary:
This was a longstanding FIXME and is a necessary precursor to cases
where foldOperandImpl may have to create more than one instruction
(e.g. to constrain a register class). This is the split out NFC changes from
D6262.

Reviewers: pete, ributzka, uweigand, mcrosier

Reviewed By: mcrosier

Subscribers: mcrosier, ted, llvm-commits

Differential Revision: http://reviews.llvm.org/D10174

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239336 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoFix a regression in .pop_section.
Rafael Espindola [Mon, 8 Jun 2015 20:08:55 +0000 (20:08 +0000)]
Fix a regression in .pop_section.

It was calling ChangeSection with the wrong current section, eventually leading
to a crash.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239335 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[X86][SSE] Added lzcnt vector tests.
Simon Pilgrim [Mon, 8 Jun 2015 19:58:43 +0000 (19:58 +0000)]
[X86][SSE] Added lzcnt vector tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239333 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoInclude header file <functional>.
Akira Hatanaka [Mon, 8 Jun 2015 19:03:32 +0000 (19:03 +0000)]
Include header file <functional>.

This is a follow-up to r239325.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239329 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoPrefer copy init over direct init. NFC.
Benjamin Kramer [Mon, 8 Jun 2015 18:58:57 +0000 (18:58 +0000)]
Prefer copy init over direct init. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239327 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[ARM] Pass a callback to FunctionPass constructors to enable skipping execution
Akira Hatanaka [Mon, 8 Jun 2015 18:50:43 +0000 (18:50 +0000)]
[ARM] Pass a callback to FunctionPass constructors to enable skipping execution
on a per-function basis.

Previously some of the passes were conditionally added to ARM's pass pipeline
based on the target machine's subtarget. This patch makes changes to add those
passes unconditionally and execute them conditonally based on the predicate
functor passed to the pass constructors. This enables running different sets of
passes for different functions in the module.

rdar://problem/20542263

Differential Revision: http://reviews.llvm.org/D8717

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239325 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoUse a PointerUnion in MCSymbol for Section and Fragment. NFC.
Pete Cooper [Mon, 8 Jun 2015 18:41:57 +0000 (18:41 +0000)]
Use a PointerUnion in MCSymbol for Section and Fragment.  NFC.

The Fragment and Section, and a bool for HasFragment were all used to create
a PointerUnion.  Just use a pointer union instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239324 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoRemove includes of MCMachOSymbolFlags.h after it was deleted
Pete Cooper [Mon, 8 Jun 2015 17:25:57 +0000 (17:25 +0000)]
Remove includes of MCMachOSymbolFlags.h after it was deleted

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239318 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoMake flags get/set method protected so that all flags have to be managed by subclasses.
Pete Cooper [Mon, 8 Jun 2015 17:17:30 +0000 (17:17 +0000)]
Make flags get/set method protected so that all flags have to be managed by subclasses.

All of ELF, COFF and MachO now manipulate the flags in helpers so we don't need
anyone to read the flags directly, but instead via those helpers.

Reviewed by Rafael Espíndola.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239317 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoMove all flags logic to MCSymbolMachO.
Pete Cooper [Mon, 8 Jun 2015 17:17:28 +0000 (17:17 +0000)]
Move all flags logic to MCSymbolMachO.

Also delete the now unused MCMachOSymbolFlags.h header as the only enum in there was moved to MCSymbolMachO.

Similarly to ELF and COFF, manipulating the flags is now done via helpers instead of spread
throughout the codebase.

Reviewed by Rafael Espíndola.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239316 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoAdd MCSymbolMachO which will be used to hide the MCSymbolMachO flags.
Pete Cooper [Mon, 8 Jun 2015 17:17:23 +0000 (17:17 +0000)]
Add MCSymbolMachO which will be used to hide the MCSymbolMachO flags.

Reviewed by Rafael Espíndola.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239315 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoMove all of the MCSymbol COFF flags logic in to MCSymbolCOFF.
Pete Cooper [Mon, 8 Jun 2015 17:17:19 +0000 (17:17 +0000)]
Move all of the MCSymbol COFF flags logic in to MCSymbolCOFF.

All flags setting/getting is now done in the class with helper methods instead
of users having to get the bits in the correct order.

Reviewed by Rafael Espíndola.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239314 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoMove COFF Type in to the MCSymbolCOFF class.
Pete Cooper [Mon, 8 Jun 2015 17:17:16 +0000 (17:17 +0000)]
Move COFF Type in to the MCSymbolCOFF class.

The flags field in MCSymbol only needs to be 16-bits on ELF and MachO.
This moves the 16-bit Type out of there so that it can be reduced in size in a future commit.

Reviewed by Rafael Espíndola.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239313 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoAdd MCSymbolCOFF class and use it to get and set the COFF type field.
Pete Cooper [Mon, 8 Jun 2015 17:17:12 +0000 (17:17 +0000)]
Add MCSymbolCOFF class and use it to get and set the COFF type field.

Reviewed by Rafael Espíndola.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239312 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoChange MCSymbol IsELF to an enum to support future MCSymbolCOFF and MCSymbolMachO.
Pete Cooper [Mon, 8 Jun 2015 17:17:09 +0000 (17:17 +0000)]
Change MCSymbol IsELF to an enum to support future MCSymbolCOFF and MCSymbolMachO.

Reviewed by Rafael Espíndola.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239311 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoX86: Reject register operands with obvious type mismatches.
Matthias Braun [Mon, 8 Jun 2015 16:56:23 +0000 (16:56 +0000)]
X86: Reject register operands with obvious type mismatches.

While we have some code to transform specification like {ax} into
{eax}/{rax} if the operand type isn't 16bit, we should reject cases
where there is no sane way to do this, like the i128 type in the
example.

Related to rdar://21042280

Differential Revision: http://reviews.llvm.org/D10260

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239309 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoFix assertion failure in global-merge with unused ConstantExpr
Oliver Stannard [Mon, 8 Jun 2015 16:55:31 +0000 (16:55 +0000)]
Fix assertion failure in global-merge with unused ConstantExpr

The global-merge pass was crashing because it assumes that all ConstantExprs
(reached via the global variables that they use) have at least one user.

I haven't worked out a way to test this, as an unused ConstantExpr cannot be
represented by serialised IR, and global-merge can only be run in llc, which
does not run any passes which can make a ConstantExpr dead.

This (reduced to the point of silliness) C code triggers this bug when compiled
for arm-none-eabi at -O1:

  static a = 7;
  static volatile b[10] = {&a};

  c;
  main() {
    c = 0;
    for (; c < 10;)
      printf(b[c]);
  }

Differential Revision: http://reviews.llvm.org/D10314

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239308 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[Hexagon] Adding functionality for searching for compound instruction pairs. Compoun...
Colin LeMahieu [Mon, 8 Jun 2015 16:34:47 +0000 (16:34 +0000)]
[Hexagon] Adding functionality for searching for compound instruction pairs.  Compound instructions reduce slot resource requirements freeing those packet slots up for more instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239307 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[DAGCombiner] Added CTLZ vector constant folding support.
Simon Pilgrim [Mon, 8 Jun 2015 16:19:00 +0000 (16:19 +0000)]
[DAGCombiner] Added CTLZ vector constant folding support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239305 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agofix typos; NFC
Sanjay Patel [Mon, 8 Jun 2015 15:21:38 +0000 (15:21 +0000)]
fix typos; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239303 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoARM]: Add support for MMFR4_EL1 in assembler
Javed Absar [Mon, 8 Jun 2015 15:01:11 +0000 (15:01 +0000)]
ARM]: Add support for MMFR4_EL1 in assembler

This patch adds support for system register MMFR4_EL1 (memory model feature register) in the assembler.
This register provides information about the implemented memory model and memory management support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239302 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[Mips64][mcjit] Add R_MIPS_PC32 relocation
Petar Jovanovic [Mon, 8 Jun 2015 14:10:23 +0000 (14:10 +0000)]
[Mips64][mcjit] Add R_MIPS_PC32 relocation

This patch adds R_MIPS_PC32 relocation for Mips64.

Patch by Vladimir Radosavljevic.

Differential Revision: http://reviews.llvm.org/D10235

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239301 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoAVX-512: Implemented 256/128bit VALIGND/Q instructions for SKX and KNL
Igor Breger [Mon, 8 Jun 2015 14:03:17 +0000 (14:03 +0000)]
AVX-512: Implemented 256/128bit VALIGND/Q instructions for SKX and KNL
Implemented DAG lowering for all these forms.
Added tests for DAG lowering and encoding.

Differential Revision: http://reviews.llvm.org/D10310

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239300 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoMinor refactoring of GEP handling in isDereferenceablePointer
Artur Pilipenko [Mon, 8 Jun 2015 11:58:13 +0000 (11:58 +0000)]
Minor refactoring of GEP handling in isDereferenceablePointer

For GEP instructions isDereferenceablePointer checks that all indices are constant and within bounds. Replace this index calculation logic to a call to accumulateConstantOffset. Separated from the http://reviews.llvm.org/D9791

Reviewed By: sanjoy

Differential Revision: http://reviews.llvm.org/D9874

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239299 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[LAA] Fix estimation of number of memchecks
Silviu Baranga [Mon, 8 Jun 2015 10:27:06 +0000 (10:27 +0000)]
[LAA] Fix estimation of number of memchecks

Summary:
We need to add a runtime memcheck for pair of accesses (x,y) where at least one of x and y
are writes.

Assuming we have w writes and r reads, currently this number is  estimated as being
w* (w+r-1). This estimation will count (write,write) pairs twice and will overestimate
the number of checks required.

This change adds a getNumberOfChecks method to RuntimePointerCheck, which
will count the number of runtime checks needed (similar in implementation to
needsAnyChecking) and uses it to produce the correct number of runtime checks.

Test Plan:
llvm test suite
spec2k
spec2k6

Performance results: no changes observed (not surprising since the formula for 1 writer is basically the same, which would covers most cases - at least with the current check limit).

Reviewers: anemet

Reviewed By: anemet

Subscribers: mzolotukhin, llvm-commits

Differential Revision: http://reviews.llvm.org/D10217

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239295 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[DAGCombiner] Added CTTZ vector constant folding support.
Simon Pilgrim [Mon, 8 Jun 2015 09:57:09 +0000 (09:57 +0000)]
[DAGCombiner] Added CTTZ vector constant folding support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239293 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[LoopVectorize] Teach Loop Vectorizor about interleaved memory accesses.
Hao Liu [Mon, 8 Jun 2015 06:39:56 +0000 (06:39 +0000)]
[LoopVectorize] Teach Loop Vectorizor about interleaved memory accesses.
Interleaved memory accesses are grouped and vectorized into vector load/store and shufflevector.
E.g. for (i = 0; i < N; i+=2) {
       a = A[i];         // load of even element
       b = A[i+1];       // load of odd element
       ...               // operations on a, b, c, d
       A[i] = c;         // store of even element
       A[i+1] = d;       // store of odd element
     }

  The loads of even and odd elements are identified as an interleave load group, which will be transfered into vectorized IRs like:
     %wide.vec = load <8 x i32>, <8 x i32>* %ptr
     %vec.even = shufflevector <8 x i32> %wide.vec, <8 x i32> undef, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
     %vec.odd = shufflevector <8 x i32> %wide.vec, <8 x i32> undef, <4 x i32> <i32 1, i32 3, i32 5, i32 7>

  The stores of even and odd elements are identified as an interleave store group, which will be transfered into vectorized IRs like:
     %interleaved.vec = shufflevector <4 x i32> %vec.even, %vec.odd, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>
     store <8 x i32> %interleaved.vec, <8 x i32>* %ptr

This optimization is currently disabled by defaut. To try it by adding '-enable-interleaved-mem-accesses=true'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239291 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[llvm-readobj] Use the new symbol API.
Davide Italiano [Mon, 8 Jun 2015 04:55:29 +0000 (04:55 +0000)]
[llvm-readobj] Use the new symbol API.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239286 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[LoopAccessAnalysis] Teach LAA to check the memory dependence between strided accesses.
Hao Liu [Mon, 8 Jun 2015 04:48:37 +0000 (04:48 +0000)]
[LoopAccessAnalysis] Teach LAA to check the memory dependence between strided accesses.

Differential Revision: http://reviews.llvm.org/D9368

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239285 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoDo not build LLD from tools/Makefile, as LLD no longer has a Makefile build.
Peter Collingbourne [Mon, 8 Jun 2015 04:04:13 +0000 (04:04 +0000)]
Do not build LLD from tools/Makefile, as LLD no longer has a Makefile build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239283 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoRemove SCEVCache and FindConstantPointers from complete loop unrolling heuristic.
Michael Zolotukhin [Mon, 8 Jun 2015 03:28:06 +0000 (03:28 +0000)]
Remove SCEVCache and FindConstantPointers from complete loop unrolling heuristic.

Summary:
Using some SCEV functionality helped to entirely remove SCEVCache class and FindConstantPointers SCEV visitor.
Also, this makes the code more universal - I'll take advandate of it in next patches where I start handling additional types of instructions.

Test Plan: Tests would be submitted in subsequent patches.

Reviewers: atrick, chandlerc

Reviewed By: atrick, chandlerc

Subscribers: atrick, llvm-commits

Differential Revision: http://reviews.llvm.org/D10205

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239282 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoFix Windows build.
Peter Collingbourne [Mon, 8 Jun 2015 02:43:32 +0000 (02:43 +0000)]
Fix Windows build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239279 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agollvm-ar: Move archive writer to Object.
Peter Collingbourne [Mon, 8 Jun 2015 02:32:01 +0000 (02:32 +0000)]
llvm-ar: Move archive writer to Object.

No functional change intended, other than some minor changes to certain
diagnostics.

Differential Revision: http://reviews.llvm.org/D10296

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239278 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[TableGen] Remove unnecessary default constructed SMLoc that just existed to return...
Craig Topper [Mon, 8 Jun 2015 01:35:45 +0000 (01:35 +0000)]
[TableGen] Remove unnecessary default constructed SMLoc that just existed to return. Instead just call the default constructor in the return.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239277 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[TableGen] Use range-based for loop. NFC
Craig Topper [Mon, 8 Jun 2015 01:35:43 +0000 (01:35 +0000)]
[TableGen] Use range-based for loop. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239276 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[TableGen] Remove unnecessary extern declaration that's already in an included header...
Craig Topper [Mon, 8 Jun 2015 01:35:42 +0000 (01:35 +0000)]
[TableGen] Remove unnecessary extern declaration that's already in an included header file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239275 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[TableGen] Use the SMLoc header file instead of SourceMgr header file in a couple...
Craig Topper [Mon, 8 Jun 2015 01:35:40 +0000 (01:35 +0000)]
[TableGen] Use the SMLoc header file instead of SourceMgr header file in a couple places. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239274 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[objdump] Moving PrintImmHex out of MachODump and in to llvm-objdump and setting...
Colin LeMahieu [Sun, 7 Jun 2015 21:07:17 +0000 (21:07 +0000)]
[objdump] Moving PrintImmHex out of MachODump and in to llvm-objdump and setting instprinter appropriately.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239265 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[X86] Added tzcnt vector tests.
Simon Pilgrim [Sun, 7 Jun 2015 21:01:34 +0000 (21:01 +0000)]
[X86] Added tzcnt vector tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239264 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[MC] Function naming NFC.
Colin LeMahieu [Sun, 7 Jun 2015 20:29:37 +0000 (20:29 +0000)]
[MC] Function naming NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239263 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoSeparateConstOffsetFromGEP: Pass address space to isLegalAddressingMode
Matt Arsenault [Sun, 7 Jun 2015 20:17:44 +0000 (20:17 +0000)]
SeparateConstOffsetFromGEP: Pass address space to isLegalAddressingMode

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239262 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoMake NaryReassociate pass the address space to isLegalAddressingMode
Matt Arsenault [Sun, 7 Jun 2015 20:17:42 +0000 (20:17 +0000)]
Make NaryReassociate pass the address space to isLegalAddressingMode

No test since the kinds of transforms this prevents seem to not really
be relevant for SI's different addressing modes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239261 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoAdd isLegalAddressingMode address space argument to TTI
Matt Arsenault [Sun, 7 Jun 2015 20:12:03 +0000 (20:12 +0000)]
Add isLegalAddressingMode address space argument to TTI

Update to match the TLI version, and remove the TLI version's
default argument.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239260 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[cmake] [OCaml] Make ocamldoc targets depend on output files
Peter Zotov [Sun, 7 Jun 2015 19:22:22 +0000 (19:22 +0000)]
[cmake] [OCaml] Make ocamldoc targets depend on output files

OCaml doc builds fail without .cmi files, and .cmi files are collected
in ocaml_outputs. Therefore, make doc targets depend on ocaml_outputs as
well.

Fixes: https://llvm.org/bugs/show_bug.cgi?id=23777
Patch by Michał Górny <mgorny@gentoo.org>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239259 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[X86] Added BitScanForward/BitScanReverse memory folding + tests
Simon Pilgrim [Sun, 7 Jun 2015 18:34:25 +0000 (18:34 +0000)]
[X86] Added BitScanForward/BitScanReverse memory folding + tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239257 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoRemove global std::string. NFC.
Benjamin Kramer [Sun, 7 Jun 2015 16:36:28 +0000 (16:36 +0000)]
Remove global std::string. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239254 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoFixed line endings
Simon Pilgrim [Sun, 7 Jun 2015 16:09:48 +0000 (16:09 +0000)]
Fixed line endings

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239253 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[DAGCombiner] Added CTPOP vector constant folding support.
Simon Pilgrim [Sun, 7 Jun 2015 15:37:14 +0000 (15:37 +0000)]
[DAGCombiner] Added CTPOP vector constant folding support.

Added tests to the existing SSE/AVX test files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239252 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[AsmWriter] Rewrite module asm printing using StringRef::split.
Benjamin Kramer [Sun, 7 Jun 2015 13:59:33 +0000 (13:59 +0000)]
[AsmWriter] Rewrite module asm printing using StringRef::split.

No change in output intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239251 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoFix doxygen comments. NFC
Filipe Cabecinhas [Sun, 7 Jun 2015 06:40:24 +0000 (06:40 +0000)]
Fix doxygen comments. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239250 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[TableGen] Remove unnecessary include. NFC.
Craig Topper [Sun, 7 Jun 2015 06:01:22 +0000 (06:01 +0000)]
[TableGen] Remove unnecessary include. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239249 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[TableGen] Remove unnecessary forward declaration. NFC
Craig Topper [Sun, 7 Jun 2015 06:01:19 +0000 (06:01 +0000)]
[TableGen] Remove unnecessary forward declaration. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239248 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[TableGen] Write one of the Record constructors in terms of the other constructor...
Craig Topper [Sun, 7 Jun 2015 06:01:17 +0000 (06:01 +0000)]
[TableGen] Write one of the Record constructors in terms of the other constructor to reduce code duplication. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239247 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[TableGen] Remove unused function. NFC
Craig Topper [Sun, 7 Jun 2015 06:01:15 +0000 (06:01 +0000)]
[TableGen] Remove unused function. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239246 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[TableGen] Use 'isa' to check if something is an UnsetInit rather than getting the...
Craig Topper [Sun, 7 Jun 2015 06:01:13 +0000 (06:01 +0000)]
[TableGen] Use 'isa' to check if something is an UnsetInit rather than getting the UnsetInit singleton and comparing pointers. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239245 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[Object/ELF] Don't confuse isDefined() and isCommon.
Davide Italiano [Sun, 7 Jun 2015 02:45:19 +0000 (02:45 +0000)]
[Object/ELF] Don't confuse isDefined() and isCommon.

Reported by Rafael Espindola. Pointy-hat to me.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239241 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoTeaching llvm-mc how to understand the defsym command line option. This allows integ...
Colin LeMahieu [Sun, 7 Jun 2015 01:46:24 +0000 (01:46 +0000)]
Teaching llvm-mc how to understand the defsym command line option.  This allows integer-constant symbols to be defined on the command line and used during assembly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239240 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[Object/ELF] Provide helpers for symbol types.
Davide Italiano [Sat, 6 Jun 2015 22:54:09 +0000 (22:54 +0000)]
[Object/ELF] Provide helpers for symbol types.

These were, originally, in a different form in lld.
They can be reused for other tools, e.g. llvm-readobj.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239231 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[InstCombine, InstSimplify] Move xforms from Combine to Simplify
David Majnemer [Sat, 6 Jun 2015 22:40:21 +0000 (22:40 +0000)]
[InstCombine, InstSimplify] Move xforms from Combine to Simplify

There were several SelectInst combines that always returned an existing
instruction instead of modifying an old one or creating a new one.
These are prime candidates for moving to InstSimplify.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239229 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoUse early return idiom. NFC
Filipe Cabecinhas [Sat, 6 Jun 2015 20:44:53 +0000 (20:44 +0000)]
Use early return idiom. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239228 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[MC] Common symbols weren't being checked for redeclaration which allowed an assembly...
Colin LeMahieu [Sat, 6 Jun 2015 20:12:40 +0000 (20:12 +0000)]
[MC] Common symbols weren't being checked for redeclaration which allowed an assembly file to generate an assertion in setCommon(): !isCommon().  This change allows redeclaration as long as the size and alignment match exactly, otherwise report a fatal error.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239227 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[LoopUnroll] Fix truncation bug in canUnrollCompletely.
Sanjoy Das [Sat, 6 Jun 2015 05:24:10 +0000 (05:24 +0000)]
[LoopUnroll] Fix truncation bug in canUnrollCompletely.

Summary:
canUnrollCompletely takes `unsigned` values for `UnrolledCost` and
`RolledDynamicCost` but is passed in `uint64_t`s that are silently
truncated.  Because of this, when `UnrolledSize` is a large integer
that has a small remainder with UINT32_MAX, LLVM tries to completely
unroll loops with high trip counts.

Reviewers: mzolotukhin, chandlerc

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10293

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239218 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[CVP] Don't assume Constants of type i1 can be known to be true or false
David Majnemer [Sat, 6 Jun 2015 04:56:51 +0000 (04:56 +0000)]
[CVP] Don't assume Constants of type i1 can be known to be true or false

CVP wants to analyze the condition operand of a select along an edge.
It succeeds in getting back a Constant but not a ConstantInt.  Instead,
it gets a ConstantExpr.  It then assumes that the Constant must be equal
to false because it isn't equal to true.

Instead, perform an additional comparison.

This fixes PR23752.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239217 91177308-0d34-0410-b5e6-96231b3b80d8

9 years ago[InstCombine] Don't miscompile select to poison
David Majnemer [Sat, 6 Jun 2015 02:30:43 +0000 (02:30 +0000)]
[InstCombine] Don't miscompile select to poison

If we have (select a, b, c), it is sometimes valid to simplify this to a
single select operand.  However, doing so is only valid if the
computation doesn't inject poison into the computation.

It might be helpful to consider the following example:
  (select (icmp ne %i, INT_MAX), (add nsw %i, 1), INT_MIN)

The select is equivalent to (add %i, 1) but not (add nsw %i, 1).

Self hosting on x86_64 revealed that this occurs very, very rarely so
bailing out is hopefully pretty reasonable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239215 91177308-0d34-0410-b5e6-96231b3b80d8

9 years agoHandle 16 bit PC relative relocations.
Rafael Espindola [Sat, 6 Jun 2015 02:29:56 +0000 (02:29 +0000)]
Handle 16 bit PC relative relocations.

Fixes pr23771.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239214 91177308-0d34-0410-b5e6-96231b3b80d8