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Commit Graph

40522 Commits

Author SHA1 Message Date
Devang Patel
eb7cff69c8 If a variable is spilled by code generator then use DW_OP_fbreg to describe its location on stack.
llvm-svn: 110234
2010-08-04 18:40:52 +00:00
Owen Anderson
0c1fe93d7c Experiments show that we can safely increase our unrolling threshold without unduly impacting code size, particularly
since unrolling is not enabled at -Os.

llvm-svn: 110233
2010-08-04 18:32:46 +00:00
Dale Johannesen
53bc276b33 Remove switch for disabling ARM tail calls. They
seem to be working correctly.  No functional change.

llvm-svn: 110226
2010-08-04 18:07:17 +00:00
Devang Patel
e48431509c Add DEBUG message.
llvm-svn: 110224
2010-08-04 18:06:05 +00:00
Dan Gohman
88d90617de Fix whitespace.
llvm-svn: 110223
2010-08-04 17:43:57 +00:00
Benjamin Kramer
8bce8e326c Enable COFF writer on mingw32 and cygwin.
llvm-svn: 110200
2010-08-04 15:32:40 +00:00
Kalle Raiskila
ce1e4d80cb Make SPU backend handle insertelement and
store for "half vectors"

llvm-svn: 110198
2010-08-04 13:59:48 +00:00
Benjamin Kramer
968cc0119f Print an error message when someone tries -integrated-as on an unsupported target.
- The COFF backend doesn't support MingW/Cygwin at the moment, it'll report an
  error, but it's still much better than random assertions from the MachO backend.
- We want to make ELF the default eventually, it's what the majority of targets use.

llvm-svn: 110197
2010-08-04 13:16:30 +00:00
Torok Edwin
967fc5164f Add a missing function.
llvm-svn: 110195
2010-08-04 11:42:45 +00:00
Gabor Greif
50fb0419ea by Alexander Herz:
"The CWriter::GetValueName() method does not check if a value as an alias 
and emits the alias name which will never be defined in the output .c 
file (so the output file fails to compile). This can happen if you have 
multiple inheritance with several destructors defined by clang (...D0Ev, 
...D1Ev, ...D2Ev)."

-- applied with minor tweaks. Thanks!

llvm-svn: 110194
2010-08-04 10:00:52 +00:00
Dan Gohman
227c4f64ac Eliminate unnecessary empty string literals.
llvm-svn: 110183
2010-08-04 01:39:08 +00:00
Dan Gohman
bea5c99638 Fix a comment.
llvm-svn: 110181
2010-08-04 01:16:35 +00:00
Dan Gohman
ab805c5aae Don't print the filename twice in file-not-found errors.
llvm-svn: 110179
2010-08-04 01:13:48 +00:00
Bob Wilson
6a2437480a Combine NEON VABD (absolute difference) intrinsics with ADDs to make VABA
(absolute difference with accumulate) intrinsics.  Radar 8228576.

llvm-svn: 110170
2010-08-04 00:12:08 +00:00
Dan Gohman
aac19e4ffe Remove PointerAccessInfo, which nothing was using.
llvm-svn: 110167
2010-08-03 23:08:10 +00:00
Chris Lattner
a2e36c6b18 fix a win64 encoding problem, patch by Cameron Esfahani!
llvm-svn: 110164
2010-08-03 22:49:22 +00:00
Dan Gohman
a087b90950 Thread const correctness through a bunch of AliasAnalysis interfaces and
eliminate several const_casts.

Make CallSite implicitly convertible to ImmutableCallSite.

Rename the getModRefBehavior for intrinsic IDs to
getIntrinsicModRefBehavior to avoid overload ambiguity with CallSite,
which happens to be implicitly convertible to bool.

llvm-svn: 110155
2010-08-03 21:48:53 +00:00
Nate Begeman
b506e13a32 Add support for getting & setting the FPSCR application register on ARM when VFP is enabled.
Add support for using the FPSCR in conjunction with the vcvtr instruction, for controlling fp to int rounding.
Add support for the FLT_ROUNDS_ node now that the FPSCR is exposed.

llvm-svn: 110152
2010-08-03 21:31:55 +00:00
Dan Gohman
3ea223305c The singular of "indices" is "index".
llvm-svn: 110135
2010-08-03 20:23:52 +00:00
Dan Gohman
b0d9b03b13 Delete an unused function.
llvm-svn: 110134
2010-08-03 20:20:56 +00:00
Dan Gohman
a80f89dbc7 Make instcombine set explicit alignments on load or store
instructions with alignment 0, so that subsequent passes don't
need to bother checking the TargetData ABI size manually.

llvm-svn: 110128
2010-08-03 18:20:32 +00:00
Oscar Fuentes
7186be986b CMake: Change somme target library names:
XCore->XCoreGen
PIC16->PIC16CodeGen

After updating your working copy, the first build will fail because it
is using the old library dependencies. Start the build again and it
will work fine.

llvm-svn: 110127
2010-08-03 17:40:31 +00:00
Dan Gohman
10d085dcba Make AliasAnalysis::getModRefInfo conservative in the face of volatility.
llvm-svn: 110120
2010-08-03 17:27:43 +00:00
Jakob Stoklund Olesen
38a3f83da5 Oops. Don't normalize spill weights twice.
When the normalizeSpillWeights function was introduced, I forgot to remove this
normalization.

This change could affect register allocation. Hopefully for the better.

llvm-svn: 110119
2010-08-03 17:21:16 +00:00
Chris Lattner
a18c40fa5f avoid undefined behavior negating minint.
llvm-svn: 110117
2010-08-03 16:57:03 +00:00
Dan Gohman
03b02a1ee1 Fix a typo Devang noticed.
llvm-svn: 110115
2010-08-03 16:48:31 +00:00
Chris Lattner
aa6eb3d13d avoid undef behavior on minint, fixing PR7783.
llvm-svn: 110114
2010-08-03 16:41:24 +00:00
Peter Collingbourne
10c4f9d6bd Add an atomic lowering pass
llvm-svn: 110113
2010-08-03 16:19:16 +00:00
Dan Gohman
8391bdbe95 Use unary + instead of a separate local variable for working
around std::min vs static const friction.

llvm-svn: 110112
2010-08-03 16:15:50 +00:00
Michael J. Spencer
59bd7389a4 MC: Fix symbol fragment offsets in COFF.
Patch by Cameron Esfahani!

llvm-svn: 110104
2010-08-03 05:02:46 +00:00
Michael J. Spencer
135ecc4689 Revert "MC: Fix symbol fragment offsets in COFF."
This reverts commit r110100

Wrong path caps.

llvm-svn: 110103
2010-08-03 04:53:28 +00:00
Michael J. Spencer
6ff92fbc86 MC: Add time travel support to COFF.
llvm-svn: 110101
2010-08-03 04:43:33 +00:00
Michael J. Spencer
b9653145e4 MC: Fix symbol fragment offsets in COFF.
Patch by Cameron Esfahani!

llvm-svn: 110100
2010-08-03 04:43:24 +00:00
Michael J. Spencer
5878996848 Fix CMake build
llvm-svn: 110097
2010-08-03 02:38:20 +00:00
Dan Gohman
6604a72154 Introduce a symbolic constant for ~0u for use with AliasAnalysis.
llvm-svn: 110091
2010-08-03 01:03:11 +00:00
Dan Gohman
e0489ffe8e Add a convenient form of AliasAnalysis::alias for the case where the sizes
are unknown.

llvm-svn: 110090
2010-08-03 00:56:30 +00:00
Dan Gohman
68ac0492a4 Make SCEVUnknown a CallbackVH, so that it can be notified directly
of Value deletions and RAUWs, instead of relying on ScalarEvolution's
Scalars map being notified, as that's complicated at best, and
insufficient in general.

This means SCEVUnknown needs a non-trivial destructor, so introduce
a mechanism to allow ScalarEvolution to locate all the SCEVUnknowns.

llvm-svn: 110086
2010-08-02 23:49:30 +00:00
Dan Gohman
9d80b87a4d Sketch up a preliminary Type-Based Alias Analysis implementation.
llvm-svn: 110077
2010-08-02 23:11:01 +00:00
Dan Gohman
655a83cec4 Fix visitInvokeInst to call visitTerminatorInst, and remove
a redundant check from checkInstruction.

llvm-svn: 110076
2010-08-02 23:09:14 +00:00
Dan Gohman
5e090b7535 Add Verifier logic for indirectbr.
llvm-svn: 110075
2010-08-02 23:08:33 +00:00
Dan Gohman
abb2503036 Add a lint check for indirectbr with no successors.
llvm-svn: 110074
2010-08-02 23:06:43 +00:00
Devang Patel
f18faa5945 Add explicit constructors. Patch by Renato Golin.
llvm-svn: 110072
2010-08-02 22:51:46 +00:00
Bill Wendling
9cd35987d2 Early exit and reduce indentation. No functionality change.
llvm-svn: 110069
2010-08-02 22:06:08 +00:00
Dan Gohman
213f64b54c Fix namespace polution.
llvm-svn: 110056
2010-08-02 18:50:06 +00:00
Devang Patel
8a18e29b50 Free DbgScope created for dead functions.
llvm-svn: 110045
2010-08-02 17:32:15 +00:00
Kalle Raiskila
014c93befb More SPU v2f32 stuff added: insertelement and shuffle.
llvm-svn: 110038
2010-08-02 11:22:10 +00:00
Kalle Raiskila
766fd434df Add preliminary v2f32 support for SPU. Like with v2i32, we just
duplicate the instructions and operate on half vectors. 

Also reorder code in SPUInstrInfo.td for better coherency.

llvm-svn: 110037
2010-08-02 10:25:47 +00:00
Owen Anderson
e957c57ebb Re-apply the infamous r108614, with a fix pointed out by Dirk Steinke.
llvm-svn: 110036
2010-08-02 09:32:13 +00:00
Kalle Raiskila
21615cb06e Add preliminary v2i32 support for SPU backend. As there are no
such registers in SPU, this support boils down to "emulating" 
them by duplicating instructions on the general purpose registers. 

This adds the most basic operations on v2i32: passing parameters,
addition, subtraction, multiplication and a few others.

llvm-svn: 110035
2010-08-02 08:54:39 +00:00
Oscar Fuentes
4742c01c2a Prefix next' iterator operation with llvm::'.
Fixes potential ambiguity problems on VS 2010.

Patch by nobled!

llvm-svn: 110029
2010-08-02 06:00:15 +00:00
Daniel Dunbar
06a1d9ddcf Fix a -Wreorder warning.
llvm-svn: 110022
2010-08-02 05:43:46 +00:00
Nick Lewycky
747b2ba2b9 Work in progress.
Start cleaning up MergeFunctions to look more like the rest of LLVM. The
primary change here is to move the methods responsible for comparison into the
new FunctionComparator object. Some comments added. There's more to do.

llvm-svn: 110021
2010-08-02 05:23:03 +00:00
Eli Friedman
081daa15e1 PR7586: Make sure we don't claim that unknown bits are actually known in the
ISD::AND case of TargetLowering::SimplifyDemandedBits.

llvm-svn: 110019
2010-08-02 04:42:25 +00:00
Eli Friedman
40cb7d9994 PR7781: Fix incorrect shifting in PPCTargetLowering::LowerBUILD_VECTOR.
llvm-svn: 109998
2010-08-02 00:18:19 +00:00
Eli Friedman
3c5289c381 PR7774: Fix undefined shifts in Alpha backend. As a bonus, this actually
improves the generated code in some cases.

llvm-svn: 109985
2010-08-01 21:13:28 +00:00
Benjamin Kramer
1f47ed839d Preallocate vector, avoid unnecessary vector growth.
llvm-svn: 109971
2010-08-01 11:43:26 +00:00
Bill Wendling
36376df573 Reference the personalities. Don't copy them into a new vector.
llvm-svn: 109966
2010-08-01 01:34:21 +00:00
Daniel Dunbar
e0737ebae3 Silence some -Asserts uninitialized variable warnings.
llvm-svn: 109956
2010-07-31 21:08:54 +00:00
Daniel Dunbar
f2be238c99 Speculatively revert r108614, "Another attempt at getting the clang self-host to
like my instcombine patch.", in an attempt to fix Clang i386 bootstrap.
 - Also PR7719.

llvm-svn: 109953
2010-07-31 19:51:11 +00:00
Michael J. Spencer
1f89cc1fe5 MC: Remove HasAbsolutizedSet from WindowsX86AsmBackend.
llvm-svn: 109949
2010-07-31 07:21:44 +00:00
Bob Wilson
58c8a5da9e Move newlines before inline jumptables from the asm strings in .td files to
the jtblock_operand print methods.  This avoids extra newlines in the
disassembler's output.  PR7757.

llvm-svn: 109948
2010-07-31 06:28:10 +00:00
Michael J. Spencer
b52ff1ba41 Add relax all support to the COFF object streamer.
llvm-svn: 109947
2010-07-31 06:22:29 +00:00
Bob Wilson
439e7b1d73 Add support for disassembling VMVN (immediate) instructions. PR7747.
llvm-svn: 109946
2010-07-31 05:57:44 +00:00
Rafael Espindola
75734bc143 The BlockExtractorPass() constructor was not reading the BlockFile and that was
exactly what bugpoint expected it to do.

There was also only one user of
BlockExtractorPass(const std::vector<BasicBlock*> &B), so just remove it and
make BlockExtractorPass read BlockFile.

This fixes bugpoint's block extraction.

Nick, please review.

llvm-svn: 109936
2010-07-31 00:32:17 +00:00
Owen Anderson
e1aed29cca Add an initial implementation of PHI translation for LazyValueInfo. This involves rolling back some
of my earlier data structure improvements until I can ensure that there are no iterator invalidation problems.

llvm-svn: 109935
2010-07-30 23:59:40 +00:00
Evan Cheng
ee59acf6dd Add -disable-shifter-op to disable isel of shifter ops. On Cortex-a9 the shifts cost extra instructions so it might be better to emit them separately to take advantage of dual-issues.
llvm-svn: 109934
2010-07-30 23:33:54 +00:00
Bob Wilson
6ce71251cc Add a check in the ARM disassembler for NEON instructions that would
reference registers past the end of the NEON register file, and report them
as invalid instead of asserting when trying to print them.  PR7746.

llvm-svn: 109933
2010-07-30 23:27:59 +00:00
Dale Johannesen
eb251be031 PPC doesn't supported VLA with large alignment. This was
formerly rejected by the FE, so asserted in the BE; now the FE only
warns, so we treat it as a legitimate fatal error in PPC BE.
This means the test for the feature won't pass, so it's xfail'd.

llvm-svn: 109892
2010-07-30 21:09:48 +00:00
Dan Gohman
230d92b375 Move MaximumAlignment to be a member of the Value class.
llvm-svn: 109891
2010-07-30 21:07:05 +00:00
Owen Anderson
4e6f48d705 Revert my last two patches to LVI, which recent changes have exposed a miscompilation in.
llvm-svn: 109889
2010-07-30 20:56:07 +00:00
Nick Lewycky
b6db4aaeaa Add missing newline to debug statement.
llvm-svn: 109886
2010-07-30 20:27:01 +00:00
Bob Wilson
bd1dc153a5 Add the __TEXT,__StaticInit section to the list of sections emitted at the
beginning on ARM Darwin assembly files so that it won't be placed after
debug sections.  Radar 8252813.

llvm-svn: 109879
2010-07-30 19:55:47 +00:00
Bruno Cardoso Lopes
0c0dd2173c Support all 128-bit AVX vector intrinsics. Most part of them I already
declared during the addition of the assembler support, the additional
changes are:
- Add missing intrinsics
- Move all SSE conversion instructions in X86InstInfo64.td to the SSE.td file.
- Duplicate some patterns to AVX mode.
- Step into PCMPEST/PCMPIST custom inserter and add AVX versions.

llvm-svn: 109878
2010-07-30 19:54:33 +00:00
Bruno Cardoso Lopes
5d4afd0cb9 Fix typo!
llvm-svn: 109877
2010-07-30 19:41:24 +00:00
Daniel Dunbar
19ee08da53 MC: Initialize MCFragment::Offset, noticed by Cameron Esfahani.
llvm-svn: 109875
2010-07-30 18:32:09 +00:00
Daniel Dunbar
c97e760282 Fix -Wmissing-field-initializers warnings.
llvm-svn: 109872
2010-07-30 17:49:04 +00:00
Eli Friedman
bea7c851cf Fix for bug reported by Evzen Muller on llvm-commits: make sure to correctly
check the range of the constant when optimizing a comparison between a
constant and a sign_extend_inreg node.

llvm-svn: 109854
2010-07-30 06:44:31 +00:00
Jim Grosbach
1718345a30 Many Thumb2 instructions can reference the full ARM register set (i.e.,
have 4 bits per register in the operand encoding), but have undefined
behavior when the operand value is 13 or 15 (SP and PC, respectively).
The trivial coalescer in linear scan sometimes will merge a copy from
SP into a subsequent instruction which uses the copy, and if that
instruction cannot legally reference SP, we get bad code such as:
  mls r0,r9,r0,sp
instead of:
  mov r2, sp
  mls r0, r9, r0, r2

This patch adds a new register class for use by Thumb2 that excludes
the problematic registers (SP and PC) and is used instead of GPR
for those operands which cannot legally reference PC or SP. The
trivial coalescer explicitly requires that the register class
of the destination for the COPY instruction contain the source
register for the COPY to be considered for coalescing. This prevents
errant instructions like that above.

PR7499

llvm-svn: 109842
2010-07-30 02:41:01 +00:00
Nate Begeman
0b0f838c32 Add builtins for ssat/usat, similar to RealView's __ssat and __usat intrinsics.
llvm-svn: 109813
2010-07-29 22:48:09 +00:00
Bob Wilson
d70ec880ea Refactor ARM-specific DAG combining in preparation for adding some more
transformations.

llvm-svn: 109800
2010-07-29 20:34:14 +00:00
Dale Johannesen
717fbb2b32 Implement vector constants which are splat of
integers with mov + vdup.  8003375.  This is
currently disabled by default because LICM will
not hoist a VDUP, so it pessimizes the code if
the construct occurs inside a loop (8248029).

llvm-svn: 109799
2010-07-29 20:10:08 +00:00
Bob Wilson
823182c3e5 Don't assert on an unrecognized BrMiscFrm instruction.
PR7745.

llvm-svn: 109788
2010-07-29 18:29:28 +00:00
Eli Friedman
642f4c66c3 PR7750: !CExpr->isNullValue() only properly computes whether CExpr is nonnull
if CExpr is a ConstantInt.

llvm-svn: 109773
2010-07-29 18:03:33 +00:00
Nate Begeman
b24fa8b8ae Add intrinsics __builtin_arm_qadd & __builtin_arm_qsub to allow access to the QADD & QSUB instructions.
Behave identically to __qadd & __qsub RealView instruction intrinsics.

llvm-svn: 109770
2010-07-29 17:56:55 +00:00
Benjamin Kramer
d1340209a1 Plug the remaining MC leaks by giving MCObjectStreamer/MCAsmStreamer ownership of the TargetAsmBackend and the MCCodeEmitter.
llvm-svn: 109767
2010-07-29 17:48:06 +00:00
Dale Johannesen
71204e008b Comment typo.
llvm-svn: 109765
2010-07-29 17:45:24 +00:00
Jakob Stoklund Olesen
1dee3913d6 Revert r109652, and remove the offending assert in loadRegFromStackSlot instead.
We do sometimes load from a too small stack slot when dealing with x86 arguments
(varargs and smaller-than-32-bit args). It looks like we know what we are doing
in those cases, so I am going to remove the assert instead of artifically
enlarging stack slot sizes.

The assert in storeRegToStackSlot stays in. We don't want to write beyond the
bounds of a stack slot.

llvm-svn: 109764
2010-07-29 17:42:27 +00:00
Daniel Dunbar
d516b0a1bd CrashRecovery: Use ThreadLocal::erase() instead of set(0).
llvm-svn: 109752
2010-07-29 15:24:21 +00:00
Benjamin Kramer
85d8649a9c Stop leaking std::strings in GetDwarfFile.
llvm-svn: 109746
2010-07-29 13:53:19 +00:00
Benjamin Kramer
20e27bc59b COFFObjectWriter: Don't leak COFFSymbols and COFFSections.
llvm-svn: 109745
2010-07-29 11:57:59 +00:00
Daniel Dunbar
d62252d9f8 Make sure to include config.h, to pickup LLVM_ON_WIN32.
llvm-svn: 109721
2010-07-29 01:52:04 +00:00
Daniel Dunbar
7972ac4c88 MC: Destroy Macro instances.
llvm-svn: 109720
2010-07-29 01:51:55 +00:00
Eric Christopher
6a1da7b4a5 Speculatively revert r109705 since it seems to be causing some build bot
angst.

llvm-svn: 109718
2010-07-29 01:25:38 +00:00
Daniel Dunbar
a5b23b4df1 CrashRecoveryContext: Add a simple POSIX implementation.
- This works, but won't handle crashes on stack overflow, or signals delivered
   to a thread other than the one that crashed. The latter is particular annoying
   on Darwin, because SIGABRT tends to go to the main thread.

llvm-svn: 109717
2010-07-29 01:21:47 +00:00
Jakob Stoklund Olesen
7f337a8e64 Fix a bug in the -regalloc=fast handling of exotic two-address instruction with
multiple defs, like t2LDRSB_POST.

The first def could accidentally steal the physreg that the second, tied def was
required to be allocated to.

Now, the tied use-def is treated more like an early clobber, and the physreg is
reserved before allocating the other defs.

This would never be a problem when the tied def was the only def which is the
usual case.

This fixes MallocBench/gs for thumb2 -O0.

llvm-svn: 109715
2010-07-29 00:52:19 +00:00
Dan Gohman
ea1486b53c Factor out some of the code for updating old SCEVUnknown values, and
extend it to handle the case where multiple RAUWs affect a single
SCEVUnknown.

Add a ScalarEvolution unittest to test for this situation.

llvm-svn: 109705
2010-07-29 00:17:55 +00:00
Owen Anderson
712152a68e Pass the queried value by argument rather than in a member, in preparation for supporting PHI translation.
llvm-svn: 109701
2010-07-28 23:50:08 +00:00
Jim Grosbach
8764c0127d ARM mode version of r109693. Remove incorrect substitution pattern for UXTB16. It wrongly assumed the input shift was actually a rotate. rdar://8240138
llvm-svn: 109696
2010-07-28 23:25:44 +00:00
Jim Grosbach
17bec0f609 Remove incorrect substitution pattern for UXTB16. It wrongly assumed the input shift was actually a rotate. rdar://8240138
llvm-svn: 109693
2010-07-28 23:17:45 +00:00
Jim Grosbach
03b130774b Remove dead prototype
llvm-svn: 109691
2010-07-28 23:16:12 +00:00
Gabor Greif
0899f01287 simplify by using CallSite constructors; virtually eliminates CallSite::get from the tree
llvm-svn: 109687
2010-07-28 22:50:26 +00:00
Owen Anderson
8769f9a8dd Add an erase() method to llvm::ThreadLocal.
llvm-svn: 109686
2010-07-28 22:49:43 +00:00
Owen Anderson
670fd343a5 Get rid of LVIQuery as a distinct data structure, so that we don't have to initialize a new set of maps on every query.
llvm-svn: 109679
2010-07-28 22:07:25 +00:00
Dan Gohman
343e4fb4ea Make GlobalValue alignment consistent with load, store, and alloca
alignment, fixing silent truncation of alignment values.

llvm-svn: 109653
2010-07-28 20:56:48 +00:00
Jakob Stoklund Olesen
d4c60eed5e Create a fixed stack object for varargs that is as large as any register.
The size of this object isn't used for anything - technically it is of variable
size.

This avoids a false positive from the assert in
X86InstrInfo::loadRegFromStackSlot, and fixes PR7735.

llvm-svn: 109652
2010-07-28 20:55:38 +00:00
Kevin Enderby
3f202e65e8 Added first bit of support for the dwarf .file directive. This patch collects
the info from the .file directive and makes file and directory tables that
will eventually be put out as part of the dwarf info in the output file.

llvm-svn: 109651
2010-07-28 20:55:35 +00:00
Daniel Dunbar
111cf008aa RegionInfo: Make sure to free cached nodes; Tobias, please check!
llvm-svn: 109650
2010-07-28 20:28:50 +00:00
Daniel Dunbar
1c35389c03 MC: Put back the MCFragment vtable, so subclasses are destroyed properly (duh).
llvm-svn: 109649
2010-07-28 20:28:45 +00:00
Dan Gohman
939744be5f Define a maximum supported alignment value for load, store, and
alloca instructions (constrained by their internal encoding),
and add error checking for it. Fix an instcombine bug which
generated huge alignment values (null is infinitely aligned).
This fixes undefined behavior noticed by John Regehr.

llvm-svn: 109643
2010-07-28 20:12:04 +00:00
Jakob Stoklund Olesen
7ac201b2e3 Print out the regclass of any virtual registers used by a machine instruction.
llvm-svn: 109608
2010-07-28 18:35:46 +00:00
Douglas Gregor
4e0ad2b35b Unbreak my CMake build, say you'll compile for me again...
llvm-svn: 109598
2010-07-28 17:17:46 +00:00
Dan Gohman
a4186ab5f0 Fix this code to avoid decrementing an iterator past the beginning
of a std::vector.

llvm-svn: 109597
2010-07-28 17:15:36 +00:00
Dan Gohman
5295c21189 When user code intentionally dereferences null, the alignment of the
dereference is theoretically infinite. Put a cap on the computed
alignment to avoid overflow, noticed by John Regehr.

llvm-svn: 109596
2010-07-28 17:14:23 +00:00
Dan Gohman
041bd99662 Do GEP offset calculations with unsigned math rather than signed math
to avoid undefined behavior on overflow, noticed by John Regehr.

llvm-svn: 109594
2010-07-28 17:11:36 +00:00
Gabor Greif
ecd9b45b05 simplify
llvm-svn: 109589
2010-07-28 15:52:43 +00:00
Daniel Dunbar
4cf25fa76a Support: Add CrashRecoveryContext helper object.
- Designed as a simple wrapper to allow clients to attempt to catch crashes
   (memory errors, assertion violations, etc.) and do some kind of recovery.

 - Currently doesn't actually attempt to catch crashes.

llvm-svn: 109586
2010-07-28 15:40:20 +00:00
Gabor Greif
4909c0a1f1 simplify
llvm-svn: 109585
2010-07-28 15:31:37 +00:00
Gabor Greif
16a98fddef use Value* constructor of CallSite to create potentially improper site, and test that
llvm-svn: 109581
2010-07-28 14:28:18 +00:00
Gabor Greif
9bb43864b1 use Value* constructor of CallSite to create potentially improper site, and test that
llvm-svn: 109580
2010-07-28 12:35:54 +00:00
Gabor Greif
f6966fafe3 use Value* constructor of CallSite to create potentially improper site
llvm-svn: 109579
2010-07-28 12:19:46 +00:00
Gabor Greif
e27a194ce5 simplify
llvm-svn: 109578
2010-07-28 10:57:28 +00:00
Gabor Greif
6dc7dec8c1 simplify
llvm-svn: 109577
2010-07-28 10:46:09 +00:00
Dan Gohman
2bea1e1572 Make SCEVCallbackVH::allUsesReplacedWith update the old SCEVUnknown
object, as it may still be referenced by SCEVs not cleaned up by the
use list traversal.

Also, in ScalarEvolution::forgetValue, only check for a SCEVUnknown
object for the original value, not for any value in the use list,
because other SCEVUnknown values aren't necessary obsolete at that
point.

llvm-svn: 109570
2010-07-28 01:09:07 +00:00
Dan Gohman
9a6ea54d94 Make SCEVCallbackVH::allUsesReplacedWith unconditionally delete
the old value.

llvm-svn: 109567
2010-07-28 00:28:25 +00:00
Nate Begeman
133820e806 Implement a vectorized algorithm for <16 x i8> << <16 x i8>
This is about 4x faster and smaller than the existing scalarization.

llvm-svn: 109566
2010-07-28 00:21:48 +00:00
Owen Anderson
2d39891e91 Rearrange several datastructures in LazyValueInfo to improve compile time.
This is still not perfect, but better than it was before.

llvm-svn: 109563
2010-07-27 23:58:11 +00:00
Gabor Greif
ec0c7b2427 reintroduce original (asserting) semantics of CallSite(Instruction *II)
add instead a CallSite(Value* V) constructor that is consistent with ImmutableCallSize
and use that one in client code

llvm-svn: 109553
2010-07-27 22:53:28 +00:00
Nate Begeman
068e932975 ~40% faster vector shl <4 x i32> on SSE 4.1 Larger improvements for smaller types coming in future patches.
For:

define <2 x i64> @shl(<4 x i32> %r, <4 x i32> %a) nounwind readnone ssp {
entry:
  %shl = shl <4 x i32> %r, %a                     ; <<4 x i32>> [#uses=1]
  %tmp2 = bitcast <4 x i32> %shl to <2 x i64>     ; <<2 x i64>> [#uses=1]
  ret <2 x i64> %tmp2
}

We get:

_shl:                                   ## @shl
	pslld	$23, %xmm1
	paddd	LCPI0_0, %xmm1
	cvttps2dq	%xmm1, %xmm1
	pmulld	%xmm1, %xmm0
	ret

Instead of:

_shl:                                   ## @shl
	pshufd	$3, %xmm0, %xmm2
	movd	%xmm2, %eax
	pshufd	$3, %xmm1, %xmm2
	movd	%xmm2, %ecx
	shll	%cl, %eax
	movd	%eax, %xmm2
	pshufd	$1, %xmm0, %xmm3
	movd	%xmm3, %eax
	pshufd	$1, %xmm1, %xmm3
	movd	%xmm3, %ecx
	shll	%cl, %eax
	movd	%eax, %xmm3
	punpckldq	%xmm2, %xmm3
	movd	%xmm0, %eax
	movd	%xmm1, %ecx
	shll	%cl, %eax
	movd	%eax, %xmm2
	movhlps	%xmm0, %xmm0
	movd	%xmm0, %eax
	movhlps	%xmm1, %xmm1
	movd	%xmm1, %ecx
	shll	%cl, %eax
	movd	%eax, %xmm0
	punpckldq	%xmm0, %xmm2
	movdqa	%xmm2, %xmm0
	punpckldq	%xmm3, %xmm0
	ret

llvm-svn: 109549
2010-07-27 22:37:06 +00:00
Gabor Greif
8c197e5dbb recommit simplification (originally r109504, backed out in r109508) now that problem in CallSiteBase is fixed
llvm-svn: 109547
2010-07-27 22:02:00 +00:00
Devang Patel
38a7221118 It is FE's responsibility to emit proper directory name.
llvm-svn: 109538
2010-07-27 20:51:15 +00:00
Jim Grosbach
2f4adcee5f Grammar
llvm-svn: 109525
2010-07-27 18:36:27 +00:00
Nate Begeman
15fe179ecb Fix a crash in the dag combiner caused by ConstantFoldBIT_CONVERTofBUILD_VECTOR calling itself
recursively and returning a SCALAR_TO_VECTOR node, but assuming the input was always a BUILD_VECTOR.

llvm-svn: 109519
2010-07-27 18:02:18 +00:00
Jim Grosbach
4d81e796cb 80 column
llvm-svn: 109513
2010-07-27 17:38:47 +00:00
Jim Grosbach
7e561eb81c fix typo
llvm-svn: 109511
2010-07-27 17:14:29 +00:00
Gabor Greif
2778a21978 recommit simplification (r109502, backed out r109509); seems to innocent
llvm-svn: 109510
2010-07-27 16:44:23 +00:00
Gabor Greif
c95e84ab61 back out this too to restore the bots
llvm-svn: 109509
2010-07-27 15:56:07 +00:00
Gabor Greif
981f3d3a31 back out r109504, breaks the bots
llvm-svn: 109508
2010-07-27 15:18:11 +00:00
Gabor Greif
394841cea8 simplify: CallSite::get --> CallSite constructor
llvm-svn: 109506
2010-07-27 15:02:37 +00:00
Gabor Greif
90a627cfaa simplify
llvm-svn: 109504
2010-07-27 14:38:38 +00:00
Gabor Greif
aaf68e2e5a use ImmutableCallSite for const-corrgoodness
llvm-svn: 109503
2010-07-27 14:15:29 +00:00
Gabor Greif
ee90e05139 simplify
llvm-svn: 109502
2010-07-27 13:31:22 +00:00
Mikhail Glushenkov
61338a536b Fix silent failure with no input files.
llvm-svn: 109500
2010-07-27 11:19:40 +00:00
Mikhail Glushenkov
33c561c22c Return -1 only on failure to execute a program.
Also fix some comments.

llvm-svn: 109499
2010-07-27 11:19:36 +00:00
Tobias Grosser
ebc6c0cf50 RegionInfo: Add getMaxRegionExit()
getMaxRegionExit returns the exit of the maximal refined region starting
at a specific basic block.

llvm-svn: 109496
2010-07-27 08:39:43 +00:00
Duncan Sands
816457c7f3 After updating value handles for RAUW, check that no weak or tracking handles
are still on the list.  This might happen if a CallbackVH created some new value
handles for the old value when doing RAUW.  Barf if it occurs, since it is almost
certainly a mistake.

llvm-svn: 109495
2010-07-27 06:53:14 +00:00
Michael J. Spencer
33ac353ce4 Make MC use Windows COFF on Windows and add tests.
llvm-svn: 109494
2010-07-27 06:46:15 +00:00
Tobias Grosser
16789d79fe Add function to query RegionInfo about loops.
* contains(Loop), * getOutermostLoop()
* Improve getNameStr() to return a sensible name, if basic blocks are not named.

llvm-svn: 109490
2010-07-27 04:17:13 +00:00
Jakob Stoklund Olesen
b056152ccf The isLoadFromStackSlot and isStoreToStackSlot have no way of reporting
subregister operands like this:

%reg1040:sub_32bit<def> = MOV32rm <fi#-2>, 1, %reg0, 0, %reg0, %reg1040<imp-def>; mem:LD4[FixedStack-2](align=8)

Make them return false when subreg operands are present. VirtRegRewriter is
making bad assumptions otherwise.

This fixes PR7713.

llvm-svn: 109489
2010-07-27 04:17:01 +00:00
Jakob Stoklund Olesen
fa4bcde9d9 Add assertions that expose the PR7713 miscompilation: Accessing a stack slot
with a too-big register class.

llvm-svn: 109488
2010-07-27 04:16:58 +00:00
Bill Wendling
bb2398331b It's better to have the arrays, which would trigger the creation of stack
protectors, to be near the stack protectors on the stack. Accomplish this by
tagging the stack object with a predicate that indicates that it would trigger
this. In the prolog-epilog inserter, assign these objects to the stack after the
stack protector but before the other objects.

llvm-svn: 109481
2010-07-27 01:55:19 +00:00
Jakob Stoklund Olesen
2b379c4339 Add SplitEditor to SplitKit. This class will be used to edit live intervals and
rewrite instructions for live range splitting.

Still work in progress.

llvm-svn: 109469
2010-07-26 23:44:11 +00:00
Dan Gohman
64157c1919 Fix a use-after-free.
llvm-svn: 109468
2010-07-26 23:40:24 +00:00
Bill Wendling
efed27734e Using llvm.eh.catch.all.value instead of .llvm.eh.catch.all.value.
llvm-svn: 109462
2010-07-26 22:36:52 +00:00
Eli Friedman
94c9f00dd6 And a bit more non-ASCII stuff.
llvm-svn: 109458
2010-07-26 22:28:18 +00:00
Anton Korobeynikov
b71ee4ebbb Drop some non-ascii stuff
llvm-svn: 109456
2010-07-26 22:23:07 +00:00
Bob Wilson
73936af25b Don't call __register_frame from the JIT on systems that use setjmp/longjmp
exception handling.  Also fix an extra underscore typo in one instance of
"__ARM_EABI__".  Radar 8236264.

llvm-svn: 109451
2010-07-26 21:58:00 +00:00
Evan Cheng
4cee8136a7 On x86, f32 / f64 nodes share the same registers as 128-bit vector values.
llvm-svn: 109450
2010-07-26 21:50:05 +00:00
Evan Cheng
e5f7eaf10c The "excess register pressure" returned by HighRegPressure() is not accurate enough to factor into scheduling priority. Eliminate it and add early exits to speed up scheduling.
llvm-svn: 109449
2010-07-26 21:49:07 +00:00
Anton Korobeynikov
5e1e95aed9 Add a note
llvm-svn: 109448
2010-07-26 21:48:35 +00:00
Bruno Cardoso Lopes
cb0f921ca4 Temporary hack to let codegen assert or generate poor code in case
we are using AVX and no AVX version of the desired intruction is present,
this is better for incremental dev (without fallbacks it's easier to spot
what's missing). Not sure this is the best hack thought (we can also disable
all HasSSE* predicates by dinamically marking them 'false' if AVX is present)

llvm-svn: 109434
2010-07-26 21:01:18 +00:00
Owen Anderson
12ab6162bf Add an initial implementation of LazyValueInfo updating for JumpThreading. Disabled for now.
llvm-svn: 109424
2010-07-26 18:48:03 +00:00
Anton Korobeynikov
5e3d50ec58 Currently EH lowering code expects typeinfo to be global only.
This assumption is not satisfied due to global mergeing.
Workaround the issue by temporary disablinge mergeing of const globals.
Also, ignore LLVM "special" globals. This fixes PR7716

llvm-svn: 109423
2010-07-26 18:45:39 +00:00
Evan Cheng
1566171daa ARM fastisel isn't ready.
llvm-svn: 109421
2010-07-26 18:32:55 +00:00
Dan Gohman
9e0ae022d2 Fix SCEVExpander::visitAddRecExpr so that it remembers the induction variable
it inserted rather than using LoopInfo::getCanonicalInductionVariable to
rediscover it, since that doesn't work on non-canonical loops. This fixes
infinite recurrsion on such loops; PR7562.

llvm-svn: 109419
2010-07-26 18:28:14 +00:00
Dan Gohman
52e662a7f7 Handle Values with no value in getCopyFromRegs.
llvm-svn: 109415
2010-07-26 18:15:41 +00:00
Dan Gohman
23a6a1bdc5 Remove LCSSA's bogus dependence on LoopSimplify and LoopSimplify's bogus
dependence on DominanceFrontier. Instead, add an explicit DominanceFrontier
pass in StandardPasses.h to ensure that it gets scheduled at the right
time.

Declare that loop unrolling preserves ScalarEvolution, and shuffle some
getAnalysisUsages.

This eliminates one LoopSimplify and one LCCSA run in the standard
compile opts sequence.

llvm-svn: 109413
2010-07-26 18:11:16 +00:00
Dan Gohman
7d588b7dec Preserve ScalarEvolution in the loop unroller.
llvm-svn: 109412
2010-07-26 18:02:06 +00:00
Dan Gohman
e191a19b69 Fix (at least) quadratic worst-case complexity in DominanceFrontier::splitBlock:
don't visit all blocks in the function, and don't iterate over the split blocks'
predecessor lists for each block visited.

Also, remove the special-case test for the entry block. Splitting the entry
block isn't common enough to make this worthwhile.

This fixes a major compile-time bottleneck which is exposed now that
LoopSimplify isn't being redundantly run both before and after
DominanceFrontier.

llvm-svn: 109408
2010-07-26 17:55:15 +00:00
Dan Gohman
c90f474e23 Avoid copying and recopying a std::set.
llvm-svn: 109405
2010-07-26 17:45:33 +00:00
Dan Gohman
8babd895c7 Exit a search loop when the search goal is found.
llvm-svn: 109404
2010-07-26 17:41:45 +00:00
Dan Gohman
014eec6389 Fix formatting.
llvm-svn: 109403
2010-07-26 17:39:33 +00:00
Dan Gohman
8f7e88352a A block dominates itself, by definition.
llvm-svn: 109402
2010-07-26 17:38:15 +00:00
Dan Gohman
32010a6c96 Use DominatorTree::properlyDominates instead of dominates with an
explicit inequality check.

llvm-svn: 109401
2010-07-26 17:37:36 +00:00
Dan Gohman
bed2730c5b A block dominates itself, by definition.
llvm-svn: 109400
2010-07-26 17:35:32 +00:00
Dan Gohman
0627594a67 Use DominatorTree::properlyDominates instead of dominates with an
explicit inequality check.

llvm-svn: 109398
2010-07-26 17:34:05 +00:00
Duncan Sands
0f0329ea35 Pacify gcc-4.5 which wrongly thinks that RExcess (passed as the Excess parameter)
may be used uninitialized in the callers of HighRegPressure.

llvm-svn: 109393
2010-07-26 07:54:17 +00:00
Douglas Gregor
8f3e666150 Fix format-specifier warning
llvm-svn: 109391
2010-07-26 03:55:44 +00:00
Michael J. Spencer
d061ee82ad MC: Fix whitespace error from last commit.
A Visual C++ extension that removes trailing new lines? Seriously?

llvm-svn: 109390
2010-07-26 03:01:28 +00:00
Michael J. Spencer
9d96c92bde MC: Add WinCOFFObjectWriter implementation.
Origonal Windows COFF implementation by Nathan Jedffords.

llvm-svn: 109389
2010-07-26 02:17:32 +00:00
Lang Hames
998b522009 Factored out a bit of common code to mark VNInfos for deletion.
llvm-svn: 109388
2010-07-26 01:49:41 +00:00
Benjamin Kramer
0f8f1bd5a1 Reduce string trashing.
llvm-svn: 109386
2010-07-25 23:18:32 +00:00
Evan Cheng
94e820829a Add comments.
llvm-svn: 109383
2010-07-25 18:59:43 +00:00
Douglas Gregor
caa8768635 Remove extraneous semicolon
llvm-svn: 109373
2010-07-25 17:34:42 +00:00
Douglas Gregor
dc72ace097 Unbreak CMake build
llvm-svn: 109372
2010-07-25 17:10:14 +00:00
Bob Wilson
4f9b0d9fad Fix crashes when scheduling a CopyToReg node -- getMachineOpcode asserts on
those.  Radar 8231572.

llvm-svn: 109367
2010-07-25 05:34:27 +00:00
Eli Friedman
07a7e448b3 Revert r109361; it's impossible to write a call with an argument with an
invalid type.

llvm-svn: 109365
2010-07-24 23:06:59 +00:00
Eli Friedman
cd361b852b Minor simplification.
llvm-svn: 109362
2010-07-24 23:00:59 +00:00
Eli Friedman
124f0f9120 Make the ll parser check that arguments have valid types.
llvm-svn: 109361
2010-07-24 23:00:26 +00:00
Eli Friedman
6769a5186d PR7704: A function is not allowed to return a function; make sure to enforce
this consistently.

llvm-svn: 109360
2010-07-24 22:58:04 +00:00
Anton Korobeynikov
7ae895e007 Hook in GlobalMerge pass
llvm-svn: 109359
2010-07-24 21:52:08 +00:00
Nick Lewycky
8cbc57da86 Revert this because we can't clone cyclic MDNodes which are creating during a
build of llvm-gcc.

llvm-svn: 109355
2010-07-24 20:54:02 +00:00
Anton Korobeynikov
2a0715eb1b Add hook to insert late LLVM=>LLVM passes just before isel
llvm-svn: 109354
2010-07-24 20:48:54 +00:00
Nick Lewycky
7094bd27bc Whether function-local or not, a MDNode may reference a Function in which case
it needs to be mapped to refer to the function in the new module, not the old
one. Fixes PR7700.

llvm-svn: 109353
2010-07-24 19:43:25 +00:00
Duncan Sands
5128cb3743 Clarify that if a new value handle is added while dropping value handles
hanging off a value, then the dropping code will intentionally not drop
it too (since this is almost certainly a bug).

llvm-svn: 109337
2010-07-24 12:09:22 +00:00
Bob Wilson
59114a12b8 Change ScheduleDAGInstrs::Defs and ::Uses to be variable-size vectors
instead of fixed size arrays, so that increasing FirstVirtualRegister to 16K
won't cause a compile time performance regression.

llvm-svn: 109330
2010-07-24 06:01:53 +00:00
Devang Patel
df9f5bf991 Use current working directory when Dirname is empty. This only happens when absolute source file path is used on compiler command line.
llvm-svn: 109302
2010-07-24 00:53:22 +00:00
Evan Cheng
a0b74d8804 Add an ILP scheduler. This is a register pressure aware scheduler that's
appropriate for targets without detailed instruction iterineries.
The scheduler schedules for increased instruction level parallelism in
low register pressure situation; it schedules to reduce register pressure
when the register pressure becomes high.

On x86_64, this is a win for all tests in CFP2000. It also sped up 256.bzip2
by 16%.

llvm-svn: 109300
2010-07-24 00:39:05 +00:00
Bruno Cardoso Lopes
632295a03c Support x86 "eiz" and "riz" pseudo index registers in the assembler.
llvm-svn: 109295
2010-07-24 00:06:39 +00:00
Jim Grosbach
4b7545413d Use the appropriate register class for an i32 when adding ARM::LR to the
function live in set. This will give us tGPR for Thumb1 and GPR otherwise,
so the copy will be spillable. rdar://8224931

llvm-svn: 109293
2010-07-23 23:50:35 +00:00
Jim Grosbach
30d0fca117 Remove too-strict assertion. We may want the vreg copy of the physical register
to be of a different register class. For example, in Thumb1 if the live-in is
a high register, we want the vreg to be a low register. rdar://8224931

llvm-svn: 109291
2010-07-23 23:48:02 +00:00