Commit Graph

120342 Commits

Author SHA1 Message Date
David Majnemer 60c994b985 [InstCombine] Don't try to sink EH pad instructions
Found by inspection, this change should not effect the existing
landingpad behavior.

llvm-svn: 244391
2015-08-08 03:51:49 +00:00
NAKAMURA Takumi e44962e9bb 244368: Fix a comment line introduced in r244368. [-Wdocumentation]
llvm-svn: 244388
2015-08-08 01:34:20 +00:00
David Majnemer be1d16939f [IR] Stop hacking around a bug in GCC 4.5
GCC 4.5 miscompiled this aspect of LLVM.  We support a minimum version
of 4.7.

llvm-svn: 244387
2015-08-08 01:33:30 +00:00
Craig Topper 68ba18f575 Add model numbers for Skylake CPUs and an additional Broadwell model.
llvm-svn: 244385
2015-08-08 01:29:15 +00:00
Craig Topper f7ce7542f9 Add Intel family 6 model 93 as Silvermont.
llvm-svn: 244384
2015-08-08 01:16:05 +00:00
Tom Stellard 30cf77457d AMDGPU/SI: Another attempt to fix Windows bots broken by r244372
llvm-svn: 244383
2015-08-08 01:11:07 +00:00
Matt Arsenault b130076469 Remove unnecessary includes
llvm-svn: 244382
2015-08-08 00:41:53 +00:00
Matt Arsenault cbd753761a AMDGPU: Implement AMDGPUOperand::print()
llvm-svn: 244381
2015-08-08 00:41:51 +00:00
Matt Arsenault 4635915504 AMDGPU/SI: Remove VCCReg
llvm-svn: 244380
2015-08-08 00:41:48 +00:00
Matt Arsenault 6942d1a034 AMDGPU/SI: Remove source uses of VCCReg
llvm-svn: 244379
2015-08-08 00:41:45 +00:00
Rafael Espindola 004dd0048b Delete dead code. NFC.
llvm-svn: 244378
2015-08-08 00:25:57 +00:00
Tom Stellard fc70950bf2 AMDGPU/SI: Attempt to fix Windows bots broken by r244372
llvm-svn: 244376
2015-08-08 00:17:59 +00:00
Rafael Espindola 8bab889b0f Convert getSymbolSection to return an ErrorOr.
This function can actually fail since the symbol contains an index to the
section and that can be invalid.

llvm-svn: 244375
2015-08-07 23:27:14 +00:00
Sanjay Patel 0f51d14957 add a missing regression test for a DAGCombiner FDIV optimization
There's no test for this transform in any backend. Discovered
while debugging fast-math-flag propagation in the DAG (r244053).

llvm-svn: 244373
2015-08-07 23:19:41 +00:00
Tom Stellard fd25395c72 AMDGPU: Add pass to lower OpenCL image and sampler arguments.
The pass adds new kernel arguments for image attributes, and
resolves calls to dummy attribute and resource id getter functions.

Patch by: Zoltan Gilian

llvm-svn: 244372
2015-08-07 23:19:30 +00:00
James Y Knight 0cab80c9b3 [SPARC] Disable unsupported ExecutionEngine tests, and XFAIL a couple
of DebugInfo tests.

llvm-svn: 244371
2015-08-07 23:01:16 +00:00
Adam Nemet 155e8741f3 [LAA] Remove unused pointer partition argument from getNumberOfChecks, NFC
This is unused after filtering checks was moved to the clients.

As a result, we can just return the number of the checks in the
precomputed set.

llvm-svn: 244369
2015-08-07 22:44:21 +00:00
Adam Nemet 15840393f3 [LAA] Make the set of runtime checks part of the state of LAA, NFC
This is the full set of checks that clients can further filter. IOW,
it's client-agnostic.  This makes LAA complete in the sense that it now
provides the two main results of its analysis precomputed:

1. memory dependences via getDepChecker().getInsterestingDependences()
2. run-time checks via getRuntimePointerCheck().getChecks()

However, as a consequence we now compute this information pro-actively.
Thus if the client decides to skip the loop based on the dependences
we've computed the checks unnecessarily.  In order to see whether this
was a significant overhead I checked compile time on SPEC2k6 LTO bitcode
files.  The change was in the noise.

The checks are generated in canCheckPtrAtRT, at the same place where we
used to call groupChecks to merge checks.

llvm-svn: 244368
2015-08-07 22:44:15 +00:00
Quentin Colombet 7d8c74ff3f [AArch64][LoadStoreOptimizer] Turn a test into an assert. NFC.
At this point the given Opc must be valid, otherwise we should
not look for a matching pair to form paired load or store.

Thanks to Chad to point out this piece of code!

llvm-svn: 244366
2015-08-07 22:40:51 +00:00
Tom Stellard 8ebad11ee9 AMDGPU/SI: Use InstAlias instead of MnemonicAlias for VOPC instructions
Summary:
With InstAlias, we don't need to print the _e32 portion of the mnemonic
when we print the $dst operand.  This change makes it possible to
include vcc in the asm string when we switch VOPC over to having
implicit vcc defs.

Reviewers: arsenm

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11813

llvm-svn: 244362
2015-08-07 22:00:56 +00:00
Sanjay Patel 8d768b5b3a redo r244360 (tighten checks...) after specifying triple
llvm-svn: 244361
2015-08-07 21:42:24 +00:00
Sanjay Patel 0e1d731631 tighten checks using update_llc_test_checks.py
llvm-svn: 244360
2015-08-07 21:38:53 +00:00
Alex Lorenz 61420f790d MIR Serialization: Serialize the base alignment for the machine memory operands.
llvm-svn: 244357
2015-08-07 20:48:30 +00:00
Alex Lorenz 83127739ff MIR Serialization: Serialize the offsets for the machine memory operands.
llvm-svn: 244356
2015-08-07 20:26:52 +00:00
Alex Lorenz dc24c1713e MIR Parser: Extract the parsing of the operand's offset into a new method. NFC.
This commit extract the code that parses the 64-bit offset from the method
'parseOperandsOffset' to a new method 'parseOffset' so that we can reuse it
when parsing the offset for the machine memory operands.

llvm-svn: 244355
2015-08-07 20:21:00 +00:00
Matt Arsenault 711b390a7c AMDGPU: Assume SMRD access for constant address space
Since r243294 these are selected to SMRD and
moved later if required.

llvm-svn: 244354
2015-08-07 20:18:34 +00:00
Rafael Espindola ee0b2b5c2b Don't look for a SHT_DYNSYM in the ELFFile's constructor.
Yet another step in not having it scan every section.

llvm-svn: 244353
2015-08-07 20:11:08 +00:00
Craig Topper a3db7d26ab Add Intel family 6 model 90 as Silvermont. Fixes PR24392.
llvm-svn: 244352
2015-08-07 20:09:42 +00:00
Rafael Espindola 4001998455 Remove the symbol iteration functions that don't take a symbol table.
Another step in making ELFFile's constructor not iterate over all sections.

llvm-svn: 244351
2015-08-07 20:07:27 +00:00
Adam Nemet 3a91e94734 [LAA] Remove unused pointer partition argument from print(), NFC
This is now handled in the client.  No need for LAA to provide this
variant.

llvm-svn: 244349
2015-08-07 19:44:48 +00:00
Chen Li eafbc9dc47 [ConstantFoldTerminator] Preserve make.implicit metadata when converting SwitchInst to BranchInst
Summary: llvm::ConstantFoldTerminator function can convert SwitchInst with single case (and default) to a conditional BranchInst. This patch adds support to preserve make.implicit metadata on this conversion.

Reviewers: sanjoy, weimingz, chenli

Subscribers: mcrosier, llvm-commits

Differential Revision: http://reviews.llvm.org/D11841

llvm-svn: 244348
2015-08-07 19:30:12 +00:00
Frederic Riss c1c1f534ec [MCDwarf] Use more idiomatic [u]int8_t types.
llvm-svn: 244347
2015-08-07 19:19:44 +00:00
Simon Pilgrim 3815c16bf8 [InstCombine] Fix SSE2/AVX2 vector logical shift by constant
This patch fixes the sse2/avx2 vector shift by constant instcombine call to correctly deal with the fact that the shift amount is formed from the entire lower 64-bit and not just the lowest element as it currently assumes.

e.g.

%1 = tail call <4 x i32> @llvm.x86.sse2.psrl.d(<4 x i32> %v, <4 x i32> <i32 15, i32 15, i32 15, i32 15>)

In this case, (V)PSRLD doesn't perform a lshr by 15 but in fact attempts to shift by 64424509455 ((15 << 32) | 15) - giving a zero result.

In addition, this review also recognizes shift-by-zero from a ConstantAggregateZero type (PR23821).

Differential Revision: http://reviews.llvm.org/D11760

llvm-svn: 244341
2015-08-07 18:22:50 +00:00
Cong Hou 855ea0f71a NFC.
Use a parent class to avoid reduncant code when specializing GraphTraits for T and const T.

llvm-svn: 244340
2015-08-07 18:04:17 +00:00
Nico Weber af3f242016 Add functions to save and restore the PrettyStackTrace state.
PrettyStackTraceHead is a LLVM_THREAD_LOCAL, which means it's just a global
in LLVM_ENABLE_THREADS=NO builds.  If a CrashRecoveryContext is used with
code that uses PrettyStackEntries, and a crash happens, PrettyStackTraceHead is
currently not reset to its pre-crash value.  These functions make it possible
to add a cleanup to such code that does this.

(Not reseting the value then causes the assert in ~PrettyStackTraceEntry() to
fire if the code outside of the CrashRecoveryContext also uses
PrettyStackEntries -- for example, clang when building a module.)

Part of PR11974.

llvm-svn: 244338
2015-08-07 17:47:03 +00:00
Nico Weber 2692811d00 Add a comment.
llvm-svn: 244337
2015-08-07 17:32:06 +00:00
Rafael Espindola 7d6112b76f Delete dead code. NFC.
llvm-svn: 244335
2015-08-07 17:06:05 +00:00
Chad Rosier 9659de379d [ARM] Remove an unused reference to MachineRegisterInfo. NFC.
llvm-svn: 244334
2015-08-07 17:02:29 +00:00
Rafael Espindola d20a28ed65 Don't use a DenseMap to handle SHT_SYMTAB_SHNDX.
It is already a convenient table.

llvm-svn: 244333
2015-08-07 16:51:44 +00:00
Tom Stellard c8733e805e AMDGPU/SI: Use correct encoding of vopc for VI in the assembler
Summary: We were using the SI encoding for VI.

Reviewers: arsenm

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11812

llvm-svn: 244332
2015-08-07 16:45:33 +00:00
Tom Stellard d37631a8ac AMDGPU/SI: Add VI checks to vop3 assembler tests
Reviewers: arsenm

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11811

llvm-svn: 244331
2015-08-07 16:45:30 +00:00
Eric Christopher 5a30e0328b We're actually -Wmissing-field-initializers clean thanks to the cmake
build so check and turn on -Wmissing-field-initializers. While there,
reorganize the conditional warning code based on compiler to be a bit
more obvious and inside a switch statement.

llvm-svn: 244330
2015-08-07 16:44:47 +00:00
Rafael Espindola 8ab4446703 Delete dead typedef. NFC.
llvm-svn: 244328
2015-08-07 16:36:47 +00:00
Frederic Riss 8e30197427 Use 'signed char' instead of 'char'
Hope this fixes the s390 and aarch64 bots.

llvm-svn: 244327
2015-08-07 16:31:59 +00:00
Rafael Espindola f7eb882176 add missing tests files
llvm-svn: 244323
2015-08-07 15:35:49 +00:00
Tom Stellard 85656cabfb AMDGPU/SI: v_mac_legacy_f32 does not exist on VI
Reviewers: arsenm

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11810

llvm-svn: 244322
2015-08-07 15:34:30 +00:00
Tom Stellard 11f19f78f0 AMDGPU/SI: Remove unused outs parameter from VOPC TableGen classes
Reviewers: arsenm

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11809

llvm-svn: 244321
2015-08-07 15:34:27 +00:00
Rafael Espindola e01f43bcc1 Add dynamic_table iterators back to ELF.h.
In tree they are only used by llvm-readobj, but it is also used by
https://github.com/mono/CppSharp.

While at it, add some missing error checking.

llvm-svn: 244320
2015-08-07 15:25:20 +00:00
Frederic Riss a5e1453ac3 [dsymutil] Use the new MCDwarfLineTableParams customization to emit linetables
llvm-dsymutil has to be able to process debug info produced by other compilers
which use different line table settings. The testcase wasn't generated by
another compiler, but by a modified clang.

llvm-svn: 244319
2015-08-07 15:14:13 +00:00
Frederic Riss a5ab8443c1 [MC/Dwarf] Allow to specify custom parameters for linetable emission.
NFC patch for current users, but llvm-dsymutil will use the new
functionality to adapt to the input linetable.

Based on a patch by Adrian Prantl.

llvm-svn: 244318
2015-08-07 15:14:08 +00:00
Silviu Baranga a07090f7fa Fix unused variable warning introduced in r244314
llvm-svn: 244315
2015-08-07 12:05:46 +00:00
Silviu Baranga 3e8e51c1a9 [ARM] Update ReconstructShuffle to handle mismatched types
Summary:
Port the ReconstructShuffle function from AArch64 to ARM
to handle mismatched incoming types in the BUILD_VECTOR
node.

This fixes an outstanding FIXME in the ReconstructShuffle
code.

Reviewers: t.p.northover, rengolin

Subscribers: aemerson, llvm-commits, rengolin

Differential Revision: http://reviews.llvm.org/D11720

llvm-svn: 244314
2015-08-07 11:40:46 +00:00
John Brawn 64e5a66794 Revert "Make global aliases have symbol size equal to their type"
This reverts r242520, as it caused pr24379. Also removes part of the test added
by r243874 that checks the size of alias symbols.

llvm-svn: 244313
2015-08-07 10:56:21 +00:00
NAKAMURA Takumi b918a404c3 Tweak llvm/test/tools/dsymutil/arch-option.test to avoid globbing on mingw-w64.
llvm-svn: 244311
2015-08-07 08:38:22 +00:00
NAKAMURA Takumi 8dbe161502 ShrinkWrap.cpp: Tweak r244235 for a non-functional member, PredicateFtor. [-Wdocumentation]
llvm-svn: 244309
2015-08-07 07:40:23 +00:00
JF Bastien 315cc06840 WebAssembly: textual emission uses expected opcode names
Summary: WebAssembly's tablegen instructions have the names WebAssembly expects, but by LLVM convention they're uppercase and suffixed with their type after an underscore. Leave the C++ code that way, but print outt he names WebAssembly expects (lowercase, no type). We could teach tablegen to do this later, maybe by using `!cast<string>(node)` in the .td files.

Reviewers: sunfish

Subscribers: jfb, llvm-commits

Differential Revision: http://reviews.llvm.org/D11776

llvm-svn: 244305
2015-08-07 01:57:03 +00:00
Tom Stellard f594fcad73 ELF: Add AMDGPU specific defintions
Reviewers: rafael

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11458

llvm-svn: 244303
2015-08-07 01:35:24 +00:00
Duncan P. N. Exon Smith 8c9dcace0d ValueMapper: Resolve uniquing cycles more aggressively
As a follow-up to r244181, resolve uniquing cycles underneath distinct
nodes on the fly.  This prevents uniquing cycles in early operands from
affecting later operands.  It also removes an iteration through distinct
nodes' operands.

No real functional change here, just more prompt resolution of temporary
nodes.

llvm-svn: 244302
2015-08-07 00:44:55 +00:00
Duncan P. N. Exon Smith c9fdbdb78d ValueMapper: Pull out helper to resolve cycles, NFC
Pull out a helper for resolving uniquing cycles of `Metadata` to remove
the boiler-plate of downcasting to `MDNode`.

llvm-svn: 244301
2015-08-07 00:39:26 +00:00
Davide Italiano db8803b05a [llvm-readobj] Convert to range-loops.
llvm-svn: 244300
2015-08-07 00:35:28 +00:00
Alex Lorenz cba8c5fe31 MIR Serialization: Fix serialization of unnamed IR block references.
The block address machine operands can reference IR blocks in other functions.
This commit fixes a bug where the references to unnamed IR blocks in other
functions weren't serialized correctly.

llvm-svn: 244299
2015-08-06 23:57:04 +00:00
Alex Lorenz 3fb77686c1 MIR Parser: Simplify the token's string value handling.
This commit removes the 'StringOffset' and 'HasStringValue' fields from the
MIToken struct and simplifies the 'stringValue' method which now returns
the new 'StringValue' field.

This commit also adopts a different way of initializing the lexed tokens -
instead of constructing a new MIToken instance, the lexer resets the old token
using the new 'reset' method and sets its attributes using the new
'setStringValue', 'setOwnedStringValue', and 'setIntegerValue' methods.

Reviewers: Sean Silva

Differential Revision: http://reviews.llvm.org/D11792

llvm-svn: 244295
2015-08-06 23:17:42 +00:00
Sean Silva a11903215f [LangRef] Cleanup some stray whitespace inconsistencies.
Patch by Debora Setton Sanches! <setton.debora@gmail.com>

llvm-svn: 244294
2015-08-06 22:56:48 +00:00
Sean Silva 706fba5366 [LangRef] Tiny editorial fixes.
Patch by Debora Setton Sanches! <setton.debora@gmail.com>

llvm-svn: 244293
2015-08-06 22:56:24 +00:00
Alex Lorenz 3d311776fb Add initial documentation for the MIR serialization format.
Differential Revision: http://reviews.llvm.org/D11736

llvm-svn: 244292
2015-08-06 22:55:19 +00:00
Juergen Ributzka f09c7a3d0f [AArch64][FastISel] Always use AND before checking the branch flag.
When we are not emitting the condition for the branch, because the condition is
in another BB or SDAG did the selection for us, then we have to mask the flag in
the register with AND.

This is required when the condition comes from a truncate, because SDAG only
truncates down to a legal size of i32.

This fixes rdar://problem/22161062.

llvm-svn: 244291
2015-08-06 22:44:15 +00:00
Juergen Ributzka 9f54dbe7a1 Revert "[AArch64][FastISel] Add more truncation tests." and "[AArch64][FastISel] Always use an AND instruction when truncating to non-legal types."
This reverts commit r243198 and 243304.

Turns out this wasn't the correct fix for this problem. It works only within
FastISel, but fails when the truncate is selected by SDAG.

llvm-svn: 244287
2015-08-06 22:13:48 +00:00
Sean Silva c2b70bf999 [compatibility.ll] Cover explicitly named comdats.
Patch by Vedant Kumar! <vsk@apple.com>

llvm-svn: 244284
2015-08-06 22:04:21 +00:00
Sean Silva 6cdd2fe0a9 Describe the process better.
Patch by Vedant Kumar! <vsk@apple.com>

llvm-svn: 244283
2015-08-06 22:03:54 +00:00
Rafael Espindola 8b3b09fdcf Move to llvm-readobj code that is only used there.
lld might end up using a small part of this, but it will be in a much
refactored form. For now this unblocks avoiding the full section scan in the
ELFFile constructor.

This also has a (very small) error handling improvement.

llvm-svn: 244282
2015-08-06 21:54:37 +00:00
David Majnemer 09e1fdb3f4 Revert accidentally committed WinEHPrepare changes
This reverts commit r244272, r244273, r244274, and r244275.

llvm-svn: 244278
2015-08-06 21:13:51 +00:00
David Majnemer 2a2b242f4b [IR] Remove TerminateInst's "NameStr" argument
TerminateInst can't have a name because it doesn't produce a result.  No
functionality change is intended, this is just a cleanup.

llvm-svn: 244276
2015-08-06 21:08:36 +00:00
David Majnemer a102e6a0e3 PHIs don't need to be postprocessed
llvm-svn: 244275
2015-08-06 21:08:34 +00:00
David Majnemer ac6b298850 Handle PHI nodes prefacing EH pads too
llvm-svn: 244274
2015-08-06 21:08:32 +00:00
David Majnemer fb7a737a72 handle phi nodes
llvm-svn: 244273
2015-08-06 21:08:30 +00:00
David Majnemer e4abcef986 [WinEHPrepare] Add rudimentary support for the new EH instructions
Summary:
This adds somewhat basic preparation functionality including:
- Formation of funclets via coloring basic blocks.
- Cloning of polychromatic blocks to ensure that funclets have unique
  program counters.
- Demotion of values used between different funclets.
- Some amount of cleanup once we have removed predecessors from basic
  blocks.
- Verification that we are left with a CFG that makes some amount of
  sense.

N.B. Arguments and numbering still need to be done.

Reviewers: rnk, JosephTremoulet

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11750

llvm-svn: 244272
2015-08-06 21:07:55 +00:00
Frederic Riss dc5370b9cc [dsymutil] Implement dSYM bundle creation
A dSYM bundle is a file hierarchy that looks slike this:
 <bundle name>.dSYM/
     Contents/
        Info.plist
        Resources/
           DWARF/
              <DWARF file(s)>

This is the default output mode of dsymutil.

llvm-svn: 244270
2015-08-06 21:05:06 +00:00
Frederic Riss 0948db6064 [dsymutil] Add (unimplemented) --flat option
dsymutil should by default generate dSYM bundles which are filesystem
hierarchies containing the debug info and an additional Info.plist.
Currently llvm-dsymutil emits raw binaries containing the debug info.
This is what we call the 'flat mode'. Add a -f/-flat option that is
supposed to enable that flat mode, but don't wire it for now, only
pass it to the tests that will need it to stay functional once we
do bundle generation by default.
This basically makes this commit NFC and removes the noise from the
actual commit that adds support for bundle generation.

llvm-svn: 244269
2015-08-06 21:05:01 +00:00
Frederic Riss 6b9396c070 Thread premissions through sys::fs::create_director{y|ies}
llvm-svn: 244268
2015-08-06 21:04:55 +00:00
Reid Kleckner fc573f33f6 [WinEH] Add documentation motivating the new EH instructions
This adds documentation on how to use the new EH instructions added in
r243766.

Reviewers: majnemer, reames

Differential Revision: http://reviews.llvm.org/D11565

llvm-svn: 244267
2015-08-06 21:01:32 +00:00
Sanjoy Das 366acc175e [IndVars] Fix PR24356.
Unsigned predicates increase or decrease agnostic of the signs of their
increments.

llvm-svn: 244265
2015-08-06 20:43:41 +00:00
Sanjoy Das c18115db9c [IndVars] Improved logging under DEBUG(); NFC.
Before this, we'd print the modified comparision in the "Simplified
comparison" case.  That looked misleading.

llvm-svn: 244264
2015-08-06 20:43:28 +00:00
Pete Cooper ebcd748927 Convert a bunch of loops to foreach. NFC.
After r244074, we now have a successors() method to iterate over
all the successors of a TerminatorInst.  This commit changes a bunch
of eligible loops to use it.

llvm-svn: 244260
2015-08-06 20:22:46 +00:00
Rui Ueyama b9583d22eb Update comments.
llvm-svn: 244259
2015-08-06 20:05:27 +00:00
Tom Stellard d488605ed3 AMDGPU/SI: Add Fiji support
Patch by: Alex Deucher

llvm-svn: 244255
2015-08-06 19:43:02 +00:00
Tom Stellard 217361c33f AMDGPU/SI: Add support for 32-bit immediate SMRD offsets on CI
Reviewers: arsenm

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11604

llvm-svn: 244254
2015-08-06 19:28:38 +00:00
Tom Stellard dee26a2876 AMDGPU/SI: Use ComplexPatterns for SMRD addressing modes
Summary: This allows us to consolidate several of the TableGen patterns.

Reviewers: arsenm

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11602

llvm-svn: 244253
2015-08-06 19:28:30 +00:00
David Blaikie 4ab57cd9ab Fix memory leaks by avoiding extra manual dynamic allocation
Improvement to r244212.

llvm-svn: 244252
2015-08-06 19:23:33 +00:00
Nico Weber 28dc4171e9 Fix nested CrashRecoveryContexts with LLVM_ENABLE_THREADS=OFF, allow them.
libclang uses a CrashRecoveryContext, and building a module does too. If a
module gets built through libclang, nested CrashRecoveryContexts are used.  They
work fine with threads as things are stored in ThreadLocal variables, but in
LLVM_ENABLE_THREADS=OFF builds the two recovery contexts would write to the
same globals.

To fix, keep active CrashRecoveryContextImpls in a list and have the global
point to the innermost one, and do something similar for
tlIsRecoveringFromCrash.

Necessary (but not sufficient) for PR11974 and PR20325

http://reviews.llvm.org/D11770

llvm-svn: 244251
2015-08-06 19:21:25 +00:00
Kostya Serebryany 242ca930e8 [libFuzzer] move the mutators to public interface so that custom mutators may reuse these functions directly
llvm-svn: 244250
2015-08-06 19:19:55 +00:00
Nico Rieck 78199518c4 Rename inst_range() to instructions() for consistency. NFC
llvm-svn: 244248
2015-08-06 19:10:45 +00:00
Kit Barton a7bf96ab5c Fix possible infinite loop in shrink wrapping when searching for save/restore
points.

There is an infinite loop that can occur in Shrink Wrapping while searching 
for the Save/Restore points. 

Part of this search checks whether the save/restore points are located in
different loop nests and if so, uses the (post) dominator trees to find the
immediate (post) dominator blocks. However, if the current block does not have
any immediate (post) dominators then this search will result in an infinite
loop. This can occur in code containing an infinite loop.

The modification checks whether the immediate (post) dominator is different from
the current save/restore block. If it is not, then the search terminates and the
current location is not considered as a valid save/restore point for shrink wrapping.

Phabricator: http://reviews.llvm.org/D11607
llvm-svn: 244247
2015-08-06 19:01:57 +00:00
Peter Collingbourne 327ce8fc11 LibDriver: Replace references to lld-link2 with lld-link.
llvm-svn: 244246
2015-08-06 19:00:42 +00:00
Quentin Colombet 6443cce233 [Reassociation] Fix miscompile for va_arg arguments.
iisUnmovableInstruction() had a list of instructions hardcoded which are
considered unmovable. The list lacked (at least) an entry for the va_arg
and cmpxchg instructions.
Fix this by introducing a new Instruction::mayBeMemoryDependent()
instead of maintaining another instruction list.

Patch by Matthias Braun <matze@braunis.de>.

Differential Revision: http://reviews.llvm.org/D11577

rdar://problem/22118647

llvm-svn: 244244
2015-08-06 18:44:34 +00:00
Alex Lorenz e86d51533d MIR Parser: Report an error when parsing duplicate memory operand flags.
llvm-svn: 244240
2015-08-06 18:26:36 +00:00
Cong Hou ec10587205 Revert r244154 which causes some build failure. See https://llvm.org/bugs/show_bug.cgi?id=24377.
llvm-svn: 244239
2015-08-06 18:17:29 +00:00
Duncan P. N. Exon Smith f032c956de Update docs for accessing !dbg attachments
llvm-svn: 244238
2015-08-06 18:15:25 +00:00
Kit Barton 45c20b474e This patch changes the interface to enable the shrink wrapping optimization.
It adds a new constructor, which takes a std::function predicate function that
is run at the beginning of shrink wrapping to determine whether the optimization
should run on the given machine function. The std::function can be overridden by
each target, allowing target-specific decisions to be made on each machine
function.

This is necessary for PowerPC, as the decision to run shrink wrapping is
partially based on the ABI. Futhermore, this operates nicely with the GCC iFunc
capability, which allows option overrides on a per-function basis.

Phabricator: http://reviews.llvm.org/D11421
llvm-svn: 244235
2015-08-06 18:02:53 +00:00
Chad Rosier 22eb71056d [AArch64] Use a static function and other minor cleanup for readability. NFC.
llvm-svn: 244233
2015-08-06 17:37:18 +00:00
Reid Kleckner 031f5a841e [cmake] Handle Dragonfly BSD like FreeBSD
Fixes build break reported in PR24358.

Patch by John Marino.

llvm-svn: 244232
2015-08-06 17:17:44 +00:00